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DYNAMIC AND STEADY-SHEAR RHEOLOGICAL PROPERTIES OF XANTHAN AND GUAR GUMS DISPERSED IN YELLOW PASSION FRUIT PULP (Passiflora edulis f. flavicarpa)

MORAES, I. C. F.; FASOLIN, L. H.; CUNHA, R. L.; MENEGALLI, F. C.
Fonte: BRAZILIAN SOC CHEMICAL ENG Publicador: BRAZILIAN SOC CHEMICAL ENG
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
100.14442%
Yellow passion fruit pulp is unstable, presenting phase separation that can be avoided by the addition of hydrocolloids. For this purpose, xanthan and guar gum [0.3, 0.7 and 1.0% (w/w)] were added to yellow passion fruit pulp and the changes in the dynamic and steady-shear rheological behavior evaluated. Xanthan dispersions showed a more pronounced pseudoplasticity and the presence of yield stress, which was not observed in the guar gum dispersions. Cross model fitting to flow curves showed that the xanthan suspensions also had higher zero shear viscosity than the guar suspensions, and, for both gums, an increase in temperature led to lower values for this parameter. The gums showed different behavior as a function of temperature in the range of 5-35 degrees C. The activation energy of the apparent viscosity was dependent on the shear rate and gum concentration for guar, whereas for xanthan these values only varied with the concentration. The mechanical spectra were well described by the generalized Maxwell model and the xanthan dispersions showed a more elastic character than the guar dispersions, with higher values for the relaxation time. Xanthan was characterized as a weak gel, while guar presented a concentrated solution behavior. The simultaneous evaluation of temperature and concentration showed a stronger influence of the polysaccharide concentration on the apparent viscosity and the G` and G `` moduli than the variation in temperature.

Conservação de sementes de maracujá-amarelo (Passiflora edulis Sims f. flavicarpa Deg.): interferências do teor de água das sementes e da temperatura do ambiente.; Conservation of yellow passion fruit (Passiflora edulis Sims f. flavicarpa Deg.) seeds: interference of water content and environment temperature.

Fonseca, Samara Camargo Lopes
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 02/07/2004 Português
Relevância na Pesquisa
100.31596%
As sementes de maracujá-amarelo perdem rapidamente o poder germinativo quando são arbitrariamente armazenadas; assim, buscando embasamento para a definição de alternativas tecnológicas voltadas à desaceleração da deterioração durante o armazenamento, o objetivo da pesquisa foi o de estudar, através de variações no teor de água das sementes e na temperatura do ambiente, o comportamento fisiológico de sementes de maracujazeiro. A experimentação, realizada entre julho de 2002 e agosto de 2003 no Laboratório de Análise de Sementes localizado na Escola Superior de Agricultura Luiz de Queiroz/ USP, foi conduzida com sementes de maracujá-amarelo (Passiflora edulis Sims f. flavicarpa Deg.) produzidas em Mogi Mirim/ SP a partir de polinização aleatória entre plantas da Série IAC 270. Após a retirada da mucilagem das sementes, foi determinado o grau de umidade inicial do lote e, paralelamente, obtida a amostra representante do tratamento com o maior teor de água estudado (31%); as sementes remanescentes foram submetidas à secagem, em estufa com circulação de ar a 30°C ± 3°C, para a obtenção dos demais tratamentos referentes aos teores de água desejados (27%, 21%, 17%, 11% e 7%). Posteriormente, os tratamentos...

Mapeamento de QRL para Xanthomonas axonopodis pv. passiflorae em maracujá-amarelo (Passiflora edulis Sims f. flavicarpa Deg.).; QRL mapping for Xanthomonas axonopodis pv. passiflorae in the yellow passion fruit (Passiflora edulis Sims f. flavicarpa Deg.)

Matta, Frederico de Pina
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 07/03/2005 Português
Relevância na Pesquisa
99.77696%
Dando continuidade aos trabalhos realizados no Departamento de Genética da ESALQ/USP, referentes aos estudos de mapeamento de genes de resistência à bacteriose em maracujá-amarelo, foram realizados dois novos experimentos de inoculação envolvendo uma população obtida a partir do cruzamento entre ‘IAPAR-06’ e ‘IAPAR- 123’, ambos acessos pertencentes ao Instituto Agronômico do Paraná (IAPAR). Essa população F1, composta de 160 indivíduos, foi utilizada para a construção dos mapas de ligação com base em marcadores AFLP, utilizando tanto marcas com segregação 1:1 quanto marcas bi-parentais 3:1, as quais serviram de ponte para a integração dos mapas construídos para cada genitor. Para a avaliação fenotípica, 104 indivíduos, além dos genitores, foram inoculados por dois isolados de Xanthomonas axonopodis pv. passiflorae, em dois experimentos distintos. Foi constatado que a resistência à bacteriose é poligênica e há, pelo menos, três locos quantitativos (QRL) envolvidos. Testes quanto à metodologia de mensuração das lesões foliares também foram realizados. Foi verificado que, independente da metodologia de avaliação fenotípica, os resultados foram equivalentes quanto ao mapeamento de QRL. De acordo com as diferentes datas de avaliação e/ou idades das folhas...

Mapas de ligação e mapeamento de QTL ("Quantitative Trait Loci") em maracujá-amarelo (Passiflora edulis Sims f. flavicarpa Deg.); Linkage maps and QTL mapping in the yellow passion-fruit (Passiflora edulis Sims f. flavicarpa Deg.)

Moraes, Michel Choairy de
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 29/08/2005 Português
Relevância na Pesquisa
100.07762%
A despeito da importância comercial da cultura do maracujá-amarelo para o Brasil, estudos genéticos e de melhoramento são bastante escassos. Neste trabalho, foi conduzido um experimento visando construir mapas de ligação e mapear QTL para caracteres relacionados à produção e qualidade de frutos. Foi utilizada uma população composta por 160 indivíduos, proveniente do cruzamento de duas plantas dos acessos IAPAR-06 e IAPAR-123. Devido à alogamia da espécie, optou-se pela abordagem de mapeamento conhecida por “pseudocruzamento teste” para a construção de dois mapas de ligação, sendo um para cada genitor, utilizando marcadores moleculares do tipo AFLP, com segregação 1:1 e 3:1. No mapa do acesso IAPAR-06 foram obtidos 10 grupos de ligação, enquanto que no mapa do IAPAR-123, nove grupos foram obtidos. Os locos bi-parentais foram alocados como marcas acessórias nos mapas de ligação e serviram para o estabelecimento da homologia entre os grupos de ligação de cada genitor. Um total de oito grupos de ligação foi alinhado com base nesses locos. Em paralelo, procedeu-se a avaliação fenotípica de 100 indivíduos dessa mesma população, os quais foram avaliados em campo, na primeira safra de produção da cultura...

Desenvolvimento e uso de marcadores microssatélites para construção e integração de mapas genéticos de maracujá-amarelo (Passiflora edulis Sims f. flavicarpa Deg.); Development of microsatellite markers and their use for the generation and integration of genetic maps of yellow passion fruit (Passiflora edulis Sims f. flavicarpa Deg.)

Oliveira, Eder Jorge de
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 20/04/2006 Português
Relevância na Pesquisa
100.51724%
O maracujá-amarelo é uma espécie alógama, auto-incompatível, o que prejudica a geração de linhagens endogâmicas e, por conseqüência, a construção e integração de mapas de ligação pelas metodologias convencionais. A exemplo do que tem sido feito em outras espécies vegetais, populações F1 (com diferentes tipos de segregação) foram utilizadas para a construção dos mapas genéticos de maracujá. Mapas individuais para cada genitor do cruzamento foram gerados fazendo uso apenas de marcas com segregação 1:1. A integração desses mapas é possível com base em marcadores bi-parentais, quando ambos os genitores são heterozigóticos para os mesmos alelos que segregam na proporção 3:1 em F1. Apesar disso, o uso de marcadores codominantes e multialélicos, como os microssatélites, possuem maior valor, uma vez que permite a obtenção de estimativas de freqüência de recombinação e da fase de ligação com um menor viés. O objetivo deste estudo foi o desenvolvimento de marcadores microssatélites utilizando bibliotecas genômicas enriquecidas, visando à construção e a integração de mapas genéticos de maracujáamarelo. Foram usadas 160 plantas oriundas do cruzamento entre os acessos IAPAR-123 x IAPAR-06, marcadores AFLP com segregação 1:1 e 3:1 e marcadores microssatélites desenvolvidos no presente estudo. Para a construção dos mapas utilizou-se um algoritmo que estima...

Fisiologia do amadurecimento de maracujá-amarelo e goiaba 'Pedro Sato' ligados ou não às plantas; Ripening physiology of yellow passion fruit and 'Pedro Sato' guava attached or not to the plant

Beltrame, Ana Elisa de Godoy
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 01/03/2013 Português
Relevância na Pesquisa
90.52574%
Os frutos são classificados em climatéricos e não climatéricos de acordo com o padrão da atividade respiratória e produção de etileno. No entanto, estudos apontam que alguns frutos não se enquadram nessa classificação e, a goiaba, tem sido considerada um deles. Uma vez que há divergências quanto à classificação de alguns frutos em climatéricos e não climatéricos, esse trabalho apresenta hipóteses de estudo para goiaba, pois dados sobre sua fisiologia pós-colheita ainda são contraditórios e para maracujá-amarelo, pois são poucos os dados sobre a sua fisiologia pós-colheita. Este trabalho teve como objetivo caracterizar a fisiologia do amadurecimento de maracujá-amarelo e goiaba 'Pedro Sato' ligados ou não às plantas, bem como, avaliar as respostas desses frutos à aplicação de reguladores do amadurecimento como o etileno e 1-metilciclopropeno (1-MCP). O trabalho foi conduzido em duas etapas. Na etapa 1, foi estimada a concentração endógena de CO2 e etileno de maracujás e goiabas ligados às plantas e em frutos colhidos em diferentes estádios de maturação. Foi fixado um tudo de silicone no epicarpo dos frutos ligados às plantas e coletadas amostras para CO2 e etileno desde o início do desenvolvimento até o completo amadurecimento dos mesmos e em frutos colhidos nos respectivos estádios de maturação para cada espécie frutífera...

Use of repellents for honeybees (Apis mellifera L.) in vitro in the yellow passion-fruit (Passiflora edulis Deg) crop and in confined beef cattle feeders

Nicodemo, D.; Nogueira Couto, R. H.
Fonte: Universidade Estadual Paulista (UNESP), Centro de Estudos de Venenos e Animais Peçonhentos (CEVAP) Publicador: Universidade Estadual Paulista (UNESP), Centro de Estudos de Venenos e Animais Peçonhentos (CEVAP)
Tipo: Artigo de Revista Científica Formato: 77-85
Português
Relevância na Pesquisa
100.39334%
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); The presence of Apis mellifera in places such as candy and soft drink factories, restaurants, and ice-cream shops has been a concern to many people. In the yellow passion-fruit crop, Apis mellifera is able to collect all anther pollen but has no active role in pollination. Honeybees also visit animal feeders with chopped sugar cane, preventing the cattle from eating. This work studied the effect of natural and synthetic substances as Apis mellifera repellents in vitro in the yellow passion-fruit crop and in confined beef cattle feeders. There was a repellent effect in vitro with the following substances in decreasing order: tobacco, rue, garlic, parsley, and century plant extracts; average effect was twenty-five minutes. For the yellow passion-fruit, garlic extracts and 2-heptanone were equally efficient with a two and a half hour repellent action. Garlic and citronella extracts were efficient in repelling Apis mellifera from confined beef cattle feeder for six hours. Garlic repellent action was higher than citronella.

Fusarium solani f. sp. passiflorae: A new forma specialis causing collar rot in yellow passion fruit

Bueno, C. J.; Fischer, I. H.; Rosa, D. D.; Firmino, A. C.; Harakava, R.; Oliveira, C. M G; Furtado, E. L.
Fonte: Universidade Estadual Paulista Publicador: Universidade Estadual Paulista
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
99.77696%
The aim of this study was to characterize a Fusarium population obtained from yellow passion fruit (YPF) with collar rot using pathogenicity, morphocultural characteristics and molecular tests. Pathogenicity and disease severity were assessed in six plant species: YPF, zucchini, tomato, bean, soya bean and cucumber. Potato dextrose agar medium (PDA) was used to determine mycelial growth at five temperatures (15-35°C). The colour produced by isolates was also determined on PDA at 25°C. Synthetic nutrient agar medium was used to evaluate: (i) type of mycelium and phialides; (ii) size, shape and number of septa from conidia; and (iii) production of chlamydospores and perithecia. Molecular tests consisted of sequencing the ITS-5·8S rDNA region and elongation factor 1α (EF-1α) gene. The isolates caused large lesions on YPF, zucchini and tomato, with YPF having the highest mean disease severity and being the only one that showed wilt symptoms and death of the plant. Thus the isolates showed host specificity. Maximum mycelial growth occurred at 25°C and the predominant colour was bluish-white. The isolates produced long phialides, dense aerial mycelium, oval microconidia with a mean size of 9·5 × 2·6 μm, macroconidia of 32·7 × 3·4 μm with 3·3 septa...

Evaluation of the Antihypertensive Properties of Yellow Passion Fruit Pulp (Passiflora edulis Sims f. flavicarpa Deg.) in Spontaneously Hypertensive Rats

Konta, Eliziane Mieko; Almeida, Mara Ribeiro; Amaral, Catia Lira do; Castania Darin, Joana Darc; Rosso, Veridiana V. de; Mercadante, Adriana Zerlotti; Greggi Antunes, Lusania Maria; Pires Bianchi, Maria Lourdes
Fonte: Wiley-Blackwell Publicador: Wiley-Blackwell
Tipo: Artigo de Revista Científica Formato: 28-32
Português
Relevância na Pesquisa
90.68422%
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); Processo FAPESP: 06/61237-4; Processo FAPESP: 05/595992-6; Various species of the genus Passiflora have been extensively used in traditional medicine as sedatives, anxiolytics, diuretics and analgesics. In the present study, after the identification and quantification of phytochemical compounds from yellow passion fruit pulp by liquid chromatography-photodiode array-mass spectrometry (HPLC-PDA-MS/MS), its antihypertensive effect was investigated on spontaneously hypertensive rats. Additionally, the renal function, evaluated by kidney/body weight, serum creatinine, proteinuria, urinary flow, reduced glutathione (GSH) levels and thiobarbituric acid-reactive substances (TBARS) and mutagenicity in bone marrow cells were assessed to evaluate the safety of passion fruit consumption. Yellow passion fruit pulp (5, 6 or 8g/kg b.w.) was administered by gavage once a day for 5 consecutive days. HLPC-PDA-MS/MS analysis revealed that yellow passion fruit pulp contains phenolic compounds, ascorbic acid, carotenoids and flavonoids. The highest dose of passion fruit pulp significantly reduced the systolic blood pressure...

DYNAMIC AND STEADY-SHEAR RHEOLOGICAL PROPERTIES OF XANTHAN AND GUAR GUMS DISPERSED IN YELLOW PASSION FRUIT PULP (Passiflora edulis f. flavicarpa)

MORAES, I. C. F.; FASOLIN, L. H.; CUNHA, R. L.; MENEGALLI, F. C.
Fonte: BRAZILIAN SOC CHEMICAL ENG Publicador: BRAZILIAN SOC CHEMICAL ENG
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
100.14442%
Yellow passion fruit pulp is unstable, presenting phase separation that can be avoided by the addition of hydrocolloids. For this purpose, xanthan and guar gum [0.3, 0.7 and 1.0% (w/w)] were added to yellow passion fruit pulp and the changes in the dynamic and steady-shear rheological behavior evaluated. Xanthan dispersions showed a more pronounced pseudoplasticity and the presence of yield stress, which was not observed in the guar gum dispersions. Cross model fitting to flow curves showed that the xanthan suspensions also had higher zero shear viscosity than the guar suspensions, and, for both gums, an increase in temperature led to lower values for this parameter. The gums showed different behavior as a function of temperature in the range of 5-35 degrees C. The activation energy of the apparent viscosity was dependent on the shear rate and gum concentration for guar, whereas for xanthan these values only varied with the concentration. The mechanical spectra were well described by the generalized Maxwell model and the xanthan dispersions showed a more elastic character than the guar dispersions, with higher values for the relaxation time. Xanthan was characterized as a weak gel, while guar presented a concentrated solution behavior. The simultaneous evaluation of temperature and concentration showed a stronger influence of the polysaccharide concentration on the apparent viscosity and the G` and G `` moduli than the variation in temperature.

Passiflora edulis Sims: the correct taxonomic way to cite the yellow passion fruit (and of others colors)

Bernacci,Luís Carlos; Soares-Scott,Marta Dias; Junqueira,Nilton Tadeu Vilela; Passos,Ilene Ribeiro da Silva; Meletti,Laura Maria Molina
Fonte: Sociedade Brasileira de Fruticultura Publicador: Sociedade Brasileira de Fruticultura
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/06/2008 Português
Relevância na Pesquisa
100.92113%
Passiflora edulis, the passion fruit native from Brazil, has several common names (such as sour passion fruit, yellow passion fruit, black passion fruit, and purple passion fruit), and presents a wide variability with the different rind colors of its fruits, which are very easy to notice. However, in 1932, Otto Degener suggested that the yellow passion fruit had its origin in Australia through breeding, calling it P. edulis forma flavicarpa, and that it could be distinguished by the color of the fruit, the deeper shade of purple of the corona, and the presence of glands on the sepals. These distinctions do not support themselves, for the glands are common to the species (although they may be absent), and the corona has a wide range of colors, regardless of the color of the fruit. A more critical ingredient is the fact that the external coloration of the fruit is a character of complex inheritance and is not dominant, thus displaying a number of intermediate colors, making it difficult to identify the extreme colors. For the correct scientific naming of agricultural plants, the International Code of Botanical Nomenclature must be used in conjunction with the International Code of Nomenclature for Cultivated Plants, with the selections with significant agronomic characteristics recognized and named cultivars. In accordance with the international convention promoted by the UPOV...

Embryo sac development in yellow passion fruit Passiflora edulis f. flavicarpa (Passifloraceae)

Souza,Margarete Magalhães de; Pereira,Telma Nair Santana; Hoffmann,Magali; Melo,Edésio J.T. de; Louro,Ricardo Pereira
Fonte: Sociedade Brasileira de Genética Publicador: Sociedade Brasileira de Genética
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2002 Português
Relevância na Pesquisa
100.39334%
The yellow passion fruit, Passiflora edulis f. flavicarpa, is one of the most important Brazilian fruit crops. It is an allogamous, diploid, and self-incompatible species. It has hermaphrodite, solitary flowers, located in the leaf axils and protected by leaf bracts. The flower has an androgynophore, which is a straight stalk supporting its reproductive parts. There are usually five anthers, located at the tip of each of the five filaments. The ovary is borne just above the filaments, at the top of the androgynophore; there are three styles that are united at their base, and at the top there are three stigmas. The objective of this research was to observe embryo sac development in yellow passion flowers. Ovaries at different stages of development were fixed in FAA (formalin, acetic acid and alcohol solution), hydrated, stained with Mayer’s hemalum, and dehydrated. Ovules were cleared by using methyl salicylate, mounted on slides, and observed through a confocal scanning laser microscope. The yellow passion fruit ovule is bitegmic, crassinucellate, and anatropous, and its gametophyte development is of the Polygonum type. After meiosis, functional megaspores under go three successive mitotic divisions, resulting in an eight-nucleate megagametophyte: the egg apparatus at the micropylar end...

Hunter color dimensions, sugar content and volatile compounds in pasteurized yellow passion fruit juice (Passiflora edulis var. flavicarpa) during storage

Sandi,Delcio; Chaves,José Benício Paes; Sousa,Antônio Carlos Gomes de; Parreiras,June Ferreira Maia; Silva,Marco Túlio Coelho da; Constant,Patrícia Beltrão Lessa
Fonte: Instituto de Tecnologia do Paraná - Tecpar Publicador: Instituto de Tecnologia do Paraná - Tecpar
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/06/2004 Português
Relevância na Pesquisa
100.20172%
Changes in Hunter L, a and b values, glucose, fructose and sucrose contents, concentration of four volatile compounds (ethyl butirate, ethyl caproate, hexyl butirate and hexyl caproate) and furfural, were studied in yellow passion fruit juice (Passiflora edulis var. flavicarpa) pasteurized at 75ºC/60s, 80ºC/41s or 85ºC/27s, during storage at room temperature (25±5ºC) and refrigeration (5±1ºC) for 120 days. While the sucrose content decreased, the glucose and fructose contents increased significantly over storage time. The Hunter L and b values behaved similarly, with a tendency to decrease over time, inversely to Hunter a value. Volatile compound concentrations also decreased over time, inversely to the furfural content. Pasteurization at 85ºC/27s resulted minimum changes in the studied passion fruit characteristics, while that at 75ºC/60s was the most harmful. Storage under refrigeration tended to keep the best quality characteristics of the juice.

Control of Colletotrichum gloeosporioides (penz.) Sacc. In yellow passion fruit using Cymbopogon citratus essential oil

Anaruma,Nina Duarte; Schmidt,Flávio Luís; Duarte,Marta Cristina Teixeira; Figueira,Glyn Mara; Delarmelina,Camila; Benato,Eliane Aparecida; Sartoratto,Adilson
Fonte: Sociedade Brasileira de Microbiologia Publicador: Sociedade Brasileira de Microbiologia
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/03/2010 Português
Relevância na Pesquisa
100.39334%
The use of antibiotics in agriculture is limited when compared to their applications in human and veterinary medicine. On the other hand, the use of antimicrobials in agriculture contributes to the drug resistance of human pathogens and has stimulated the search for new antibiotics from natural products. Essential oils have been shown to exert several biological activities including antibacterial and antifungal actions. The aim of this study was to determine the activity of 28 essential oils from medicinal plants cultivated at CPMA (Medicinal and Aromatic Plants Collection), CPQBA/UNICAMP, against Colletotrichum gloeosporioides (Penz.) Sacc., the anthracnose agent in yellow passion fruit (Passiflora edulis Sims f. flavicarpa Deg), as well as evaluating their effect in the control of post-harvest decay. The oils were obtained by water-distillation using a Clevenger-type system and their minimal inhibitory concentrations (MIC) determined by the micro-dilution method. According to the results, 15 of the 28 essential oils presented activity against Colletotrichum gloeosporioides, and the following four oils presented MIC values between 0.25 and 0.3 mg/mL: Coriandrum sativum, Cymbopogon citratus, Cymbopogon flexuosus and Lippia alba. The evaluation of Cymbopogon citratus essential oil in the control of post-harvest decay in yellow passion fruit showed that the disease index of the samples treated with the essential oil did not differ (P < 0.05) from that of the samples treated with fungicide. The present study shows the potential of Cymbopogon citratus essential oil in the control of the anthracnose agent in yellow passion fruit.

Use of repellents for honeybees (Apis mellifera L.) in vitro in the yellow passion-fruit (Passiflora edulis Deg) crop and in confined beef cattle feeders

Nicodemo,D.; Nogueira Couto,R. H.
Fonte: Centro de Estudos de Venenos e Animais Peçonhentos - CEVAP, Universidade Estadual Paulista - UNESP Publicador: Centro de Estudos de Venenos e Animais Peçonhentos - CEVAP, Universidade Estadual Paulista - UNESP
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2004 Português
Relevância na Pesquisa
100.39334%
The presence of Apis mellifera in places such as candy and soft drink factories, restaurants, and ice-cream shops has been a concern to many people. In the yellow passion-fruit crop, Apis mellifera is able to collect all anther pollen but has no active role in pollination. Honeybees also visit animal feeders with chopped sugar cane, preventing the cattle from eating. This work studied the effect of natural and synthetic substances as Apis mellifera repellents in vitro in the yellow passion-fruit crop and in confined beef cattle feeders. There was a repellent effect in vitro with the following substances in decreasing order: tobacco, rue, garlic, parsley, and century plant extracts; average effect was twenty-five minutes. For the yellow passion-fruit, garlic extracts and 2-heptanone were equally efficient with a two and a half hour repellent action. Garlic and citronella extracts were efficient in repelling Apis mellifera from confined beef cattle feeder for six hours. Garlic repellent action was higher than citronella.

Polinizadores do maracujá-amarelo (Passiflora edulis f. flavicarpa Deneger, Passifloraceae) no Triângulo Mineiro: riqueza de espécies, freqüência de visitas e a conservação de áreas naturais; Pollinators of yellow passion fruit (Passiflora edulis f. flavicarpa Deneger, Passifloraceae) in the Triângulo Mineiro region, Central Brazil: species richness, frequency of visits and natural area conservation

Yamamoto, Marcela
Fonte: Universidade Federal de Uberlândia Publicador: Universidade Federal de Uberlândia
Tipo: Tese de Doutorado
Português
Relevância na Pesquisa
91.01027%
As evidências de declínio das populações dos polinizadores nativos em vários locais do mundo conduziram a iniciativas de conservação e ao incentivo de vários projetos, inclusive no Brasil, com o intuito de conhecer e propor atividades de manejo e conservação desses polinizadores. Neste contexto, o cultivo do maracujáamarelo parece constituir um modelo interessante a ser estudado uma vez que o plantio é dependente dos serviços de polinização para a produção de seus frutos, e os seus principais polinizadores envolvem abelhas nativas de grande porte, de hábitos solitários e que nidificam em madeira. Além disso, o cultivo é importante para o desenvolvimento sustentável da região do Triângulo Mineiro, uma das áreas de maior ação antrópica do bioma Cerrado. O objetivo geral da tese foi verificar a relação entre a conservação das áreas naturais de cerrado do entorno dos cultivos do maracujá-amarelo e o serviço de polinização deste cultivo na região. Para tanto, foi necessário estimar a riqueza de espécies de polinizadores, conhecer o comportamento e a freqüência de visitas nos pomares e finalmente, associar tais informações ao serviço de polinização deste cultivo na região, fazendo uma análise preliminar do efeito da cobertura das áreas naturais de entorno dos pomares na polinização e produtividade deste cultivo. O estudo foi conduzido durante o florescimento do cultivo nos anos de 2004 e 2008...

Dynamic and steady: shear rheological properties of xanthan and guar gums dispersed in yellow passion fruit pulp (Passiflora edulis f. flavicarpa)

MORAES, I. C. F; FASOLIN, L. H; CUNHA, R. L; MENEGALLI, F. C
Fonte: Brazilian Society of Chemical Engineering Publicador: Brazilian Society of Chemical Engineering
Tipo: Artigo de Revista Científica
Português
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100.14442%
Yellow passion fruit pulp is unstable, presenting phase separation that can be avoided by the addition of hydrocolloids. For this purpose, xanthan and guar gum [0.3, 0.7 and 1.0% (w/w)] were added to yellow passion fruit pulp and the changes in the dynamic and steady - shear rheological behavior evaluated. Xanthan dispersions showed a more pronounced pseudoplasticity and the presence of yield stress, which was not observed in the guar gum dispersions. Cross model fitting to flow curves showed that the xanthan suspensions also had higher zero shear viscosity than the guar suspensions, and, for both gums, an increase in temperature led to lower values for this parameter. The gums showed different behavior as a function of temperature in the range of 5 - 35ºC. The activation energy of the apparent viscosity was dependent on the shear rate and gum concentration for guar, whereas for xanthan these values only varied with the concentration. The mechanical spectra were well described by the generalized Maxwell model and the xanthan dispersions showed a more elastic character than the guar dispersions, with higher values for the relaxation time. Xanthan was characterized as a weak gel, while guar presented a concentrated solution behavior. The simultaneous evaluation of temperature and concentration showed a stronger influence of the polysaccharide concentration on the apparent viscosity and the G' and G" moduli than the variation in temperature.

Scaling the number of plants per plot and number of plots per genotype of yellow passion fruit plants

Storck,Lindolfo; Lúcio,Alessandro Dal'Col; Krause,Willian; Araújo,Dejânia Vieira de; Silva,Celice Alexandre
Fonte: Editora da Universidade Estadual de Maringá - EDUEM Publicador: Editora da Universidade Estadual de Maringá - EDUEM
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/03/2014 Português
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100.51724%
There is a demand for research on yellow passion fruit plants (Passiflora edulis Sims) used for juice production. Thus, the present study aimed to determine the number of plants per experimental plot and the number of plots per genotype for different properties of passion fruit. The data used were obtained from an experiment (Tangará da Serra, Mato Grosso State, Brazil) that assessed 13 fruit properties in eight genotypes of yellow passion fruit plants, with 10 replicates and 10 plants per plot. For each of the 80 experimental plots, the optimum plot size (Xo) was estimated by the method of maximum curvature of the coefficient of variation model. The number of replicates for each genotype and the means were estimated through the use of 10 plants per plot, combined with Xo plants per plot. The optimum plot size for the assessment of properties in yellow passion fruits independent of genotype is less than five plants, as the number of replicates is a function of the desired magnitude of accuracy. The number of plants per experiment is lower when using Xo plants per plot.

Dynamic and steady: shear rheological properties of xanthan and guar gums dispersed in yellow passion fruit pulp (Passiflora edulis f. flavicarpa)

Moraes,I. C. F; Fasolin,L. H; Cunha,R. L; Menegalli,F. C
Fonte: Brazilian Society of Chemical Engineering Publicador: Brazilian Society of Chemical Engineering
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/2011 Português
Relevância na Pesquisa
100.14442%
Yellow passion fruit pulp is unstable, presenting phase separation that can be avoided by the addition of hydrocolloids. For this purpose, xanthan and guar gum [0.3, 0.7 and 1.0% (w/w)] were added to yellow passion fruit pulp and the changes in the dynamic and steady - shear rheological behavior evaluated. Xanthan dispersions showed a more pronounced pseudoplasticity and the presence of yield stress, which was not observed in the guar gum dispersions. Cross model fitting to flow curves showed that the xanthan suspensions also had higher zero shear viscosity than the guar suspensions, and, for both gums, an increase in temperature led to lower values for this parameter. The gums showed different behavior as a function of temperature in the range of 5 - 35ºC. The activation energy of the apparent viscosity was dependent on the shear rate and gum concentration for guar, whereas for xanthan these values only varied with the concentration. The mechanical spectra were well described by the generalized Maxwell model and the xanthan dispersions showed a more elastic character than the guar dispersions, with higher values for the relaxation time. Xanthan was characterized as a weak gel, while guar presented a concentrated solution behavior. The simultaneous evaluation of temperature and concentration showed a stronger influence of the polysaccharide concentration on the apparent viscosity and the G' and G" moduli than the variation in temperature.

ORGANOGENESIS AND GENETIC TRANSFORMATION OF YELLOW PASSION FRUIT (Passiflora edulis f. flavicarpa DEG.) WITH THE GENES CMe-ACO1 AS AND nptII THROUGH Agrobacterium tumefaciens; ORGANOGÊNESE E TRANSFORMAÇÃO GENÉTICA DE MARACUJÁ AMARELO (Passiflora edulis f. flavicarpa DEG.) COM OS GENES CMe-ACO1 AS E nptII VIA Agrobacterium tumefaciens

WINKLER, Larissa Macedo
Fonte: UFPR Publicador: UFPR
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; Artigo Avaliado pelos Pares Formato: application/pdf
Publicado em 09/12/2005 Português
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90.36801%
Brazil is the main world producer of yellow passion fruit (Passiflora edulis f. flavicarpa). Fruits have a great nutritive and pharmaceutic value. They are commercialized in natura and industrialized for national market and exportation. Passion fruits present a high loss of water during fruit ripening, what is a concern for transport. In order to improve fruit quality and storage life, experiments were carried out for regeneration of plants from leaf explants of Passiflora edulis and for introduction of an antisense melon ACCoxidase gene (LEM1) via Agrobacterium tumefaciens strain carrying binary vectors. During climateric fruits ripening process, like yellow passionfruit, 1-carboxylic-1-aminocyclopropane (ACC) is converted into ethylene by the action of ACCoxidase enzyme. Two regeneration experiments were conducted, using Murashige and Skoog (1962) as basic medium. The effect of several factors was evaluated: physiological age of the explants (juvenile and adult), position of the explant on culture medium (with abaxial or adaxial face in contact with the medium), and three concentrations of benzyladenine (BAP) (1.0, 1.5 and 2.0 mg.L-1). The following data were recorded: percentage of regenerating leaf explants, mean number of buds per explant...