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Xylitol production from DEO hydrolysate of corn stover by Pichia stipitis YS-30

RODRIGUES, Rita C. L. B.; KENEALY, William R.; JEFFRIES, Thomas W.
Fonte: SPRINGER HEIDELBERG Publicador: SPRINGER HEIDELBERG
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
25.9%
Corn stover that had been treated with vapor-phase diethyl oxalate released a mixture of mono- and oligosaccharides consisting mainly of xylose and glucose. Following overliming and neutralization, a d-xylulokinase mutant of Pichia stipitis, FPL-YS30 (xyl3-a dagger 1), converted the stover hydrolysate into xylitol. This research examined the effects of phosphoric or gluconic acids used for neutralization and urea or ammonium sulfate used as nitrogen sources. Phosphoric acid improved color and removal of phenolic compounds. d-Gluconic acid enhanced cell growth. Ammonium sulfate increased cell yield and maximum specific cell growth rate independently of the acid used for neutralization. The highest xylitol yield (0.61 g(xylitol)/g(xylose)) and volumetric productivity (0.18 g(xylitol)/g(xylose) l) were obtained in hydrolysate neutralized with phosphoric acid. However, when urea was the nitrogen source the cell yield was less than half of that obtained with ammonium sulfate.; CNPq, Brazil[200702/2006-8]

Desenvolvimento de mandioca chips, moldada e frita; Development of cassava chips, molded and fried

Ferrarezzo, Eliane Maria
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 17/10/2011 Português
Relevância na Pesquisa
26.51%
A mandioca (Manihot sculenta Crantz) é originária do Brasil e é também cultivada em outros países de clima tropical, tendo grande importância como fonte de carboidratos e de subsistência para quase um bilhão de pessoas. As suas raízes são altamente perecíveis, pois após três dias da colheita inicia-se o processo de deterioração fisiológica. Métodos e produtos que possam aumentar a vida de prateleira da mandioca ou a disponibilidade de produtos à base de mandioca são de grande interesse para produtores e industriais. Este trabalho teve como objetivo o desenvolvimento de um novo produto moldado na forma de chips e frito, elaborado a partir de mandioca crua e cozida em pó, com uso mínimo de ingredientes, isento de glúten, gordura trans e ingredientes de origem animal, numa tentativa de fornecer ao mercado um produto com maior valor agregado e que possa ser produzido por pequenas e micro empresas. O estudo foi conduzido em duas etapas, na primeira obteve-se a mandioca cozida em pó e foram realizados os pré-testes de formulação e processamento dos chips e na segunda etapa foi realizado o aprimoramento da formulação e estudo de vida de prateleira da mandioca chips. Na primeira etapa a análise sensorial preliminar apontou a aparência gordurosa e a falta de gosto de sal como pontos a serem melhorados na formulação...

Qualidade físico-química e de fritura de tubérculos de cultivares de batata na safra de inverno

Fernandes, Adalton M.; Soratto, Rogério P.; Evangelista, Regina Marta; Nardin, Israel
Fonte: Associação Brasileira de Horticultura Publicador: Associação Brasileira de Horticultura
Tipo: Artigo de Revista Científica Formato: 299-304
Português
Relevância na Pesquisa
26.34%
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Com o aumento do consumo de batata processada na forma de fritura, torna-se essencial a identificação dos parâmetros de qualidade dos tubérculos de batata. Objetivou-se avaliar a composição físico-química e qualidade de fritura de tubérculos de cultivares de batata, produzidos na safra de inverno. Os tubérculos foram provenientes de experimento de campo conduzido durante a safra de inverno de 2008, no município de Itaí-SP. o delineamento experimental utilizado foi blocos casualizados, com quatro repetições e cinco tratamentos, representados pelas cultivares Agata, Asterix, Atlantic, Markies e Mondial. Os tubérculos das cultivares Mondial e Agata apresentaram características adequadas para o mercado fresco, sendo indicadas para a preparação de massas e pratos assados em que é essencial a manutenção de sua forma. Markies apresentou dupla aptidão culinária, ou seja, possui qualidade adequada ao preparo de massas e fritura. Os tubérculos das cultivares Atlantic, Asterix e Markies apresentaram boa qualidade de fritura, no entanto, a cultivar Markies apresentou polpa dos tubérculos, palitos e chips de coloração amarela mais intensa.; Given the raising consumption of potato chips...

Efeito de desidratação osmotica e coberturas comestiveis na qualidade de chips de batata-doce elaborado pelo processo de fritura por imersão; Effect of osmotic dehydration and edible coatings on quality of sweet potato chips produced by the process of frying by immersion

Luciana Cristina Brigatto Fontes
Fonte: Biblioteca Digital da Unicamp Publicador: Biblioteca Digital da Unicamp
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 17/09/2009 Português
Relevância na Pesquisa
36.66%
O Brasil apresenta a maior produção de batata-doce do continente latino-americano. Uma alternativa interessante para a expansão da cultura e também devido a sua alta perecibilidade seria a utilização da batata-doce como chips que é um mercado que vem crescendo muito por se tratar de um produto de conveniência. O objetivo deste estudo foi desenvolver chips de batata-doce com mínima incorporação de óleo, pela otimização da tecnologia combinada dos pré-tratamentos: desidratação osmótica e aplicação de coberturas comestíveis, antes do processo de fritura por imersão em oleína ou estearina de palma. A estratégia utilizada foi a avaliação sequencial das seguintes etapas: (i) estudo da atuação de diferentes antioxidantes na prevenção de escurecimento enzimático do vegetal; (ii) estudo do efeito das condições operacionais e teor das soluções desidratantes e otimização do processo de desidratação osmótica; (iii) potencial de aplicação de coberturas comestíveis; (iv) otimização do processo de fritura em oleína ou estearina de palma; (v) efeito combinado da desidratação osmótica e coberturas comestíveis antes do processo de fritura e (vi) estudo da vida útil dos chips desenvolvidos. O processo de imersão de batata-doce em solução de metabissulfito de sódio 2...

Genotype x environment interaction of agronomic and processing quality traits in potato

Augustin,Lizete; Milach,Sandra; Bisognin,Dilson Antônio; Suzin,Marilei
Fonte: Associação Brasileira de Horticultura Publicador: Associação Brasileira de Horticultura
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/03/2012 Português
Relevância na Pesquisa
36.09%
At the main crop production region of Rio Grande do Sul state, Brazil, potato is cultivated in two different growing seasons: autumn and spring. The objectives of this research paper were: i) identify potato clones with high yield potential and industrial quality for Autumn and Spring growing seasons in the northern/northeastern region of the state; ii) estimate the effects of environment and of the genotype x environment interaction on the expression of agronomic and processing quality traits of potato clones in order to determine the appropriate strategy for breeding potato for the target region. One hundred and seventy clones of nine families were developed and compared to the cultivars Atlantic, Baronesa, Catucha, Ciclamen, Hertha, Lady Roseta, Macaca, Monalisa and Vivaldi and to the clone SMIJ 461-1, in the autumn and spring of 2006, in Passo Fundo, northern Rio Grande do Sul state. The evaluated traits included number of tubers per plant, tuber weight, plant yield, presence of deep eyes, dry matter content and chip color. Genotype x environment interaction (G x E) was significant for the expression of all traits but processing quality traits like chip color were most influenced by the growing season conditions. Genetic potential expression for yield traits was maximized in the spring season. Superior clones combining agronomic and quality traits were identified at the two growing seasons. High correlation between the two growing seasons was observed for the presence of deep eyes and dry matter...

A model for the simultaneous analysis of reflectance spectra and basis factors of Munsell color samples under D65 illumination in three-dimensional Euclidean space

Romney, A. Kimball; Indow, Tarow
Fonte: National Academy of Sciences Publicador: National Academy of Sciences
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
26.55%
In this paper we present the results of an analysis of the physically measured surface reflectance spectra of 360 matte Munsell chromatic color chips plus 10 flat achromatic vectors corresponding to Munsell value levels 10 (white) to 1 (near black) for a total sample size of 370. Each of the 370 spectra was multiplied by the spectral radiant power distribution of D65 light so that the final results represent the spectra of reflected light from Munsell color chips under D65 illumination. We simultaneously model the structure of the color chips and the spectra in a common three-dimensional Euclidean space, oriented to yield the most interpretable structure with respect of the Munsell color structure. In this orientation, axis 1 roughly corresponds to the mean power of the spectral reflectance (approximate Munsell value), axis 2 goes from Munsell red to blue-green, and axis 3 goes from Munsell green-yellow to purple. Basis factors for the spectra are also plotted against wavelength and Munsell hue. These plots have implications for theories of opponent processes. By plotting the chips and spectra in the same space we obtain virtually exact correspondences between the various Munsell hues and spectral values in nanometers for comparison to those obtained by previous researchers. Mathematical derivations are provided to validate the common Euclidean model.

Two color hybridization analysis using high density oligonucleotide arrays and energy transfer dyes.

Hacia, J G; Edgemon, K; Sun, B; Stern, D; Fodor, S P; Collins, F S
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em 15/08/1998 Português
Relevância na Pesquisa
26.09%
High density oligonucleotide arrays (DNA chips) have been used in two color mutational analysis of the 3.43 kb exon 11 of the hereditary breast and ovarian cancer gene BRCA1 . Two color analysis allows competitive hybridization between a reference standard and an unknown sample, improving the performance of the assay. Fluorescein and phycoerythrin dyes werepreviously used due to their compatibility with a single line 488 nm excitation source. Here we show that an alternative dye combination, containing the energy transfer dye system phycoerythrin*cy5 along with phycoerythrin, provides more evenly matched signal intensities and decreased spectral overlap between the two fluorophores, while maintaining compatibility with a 488 nm excitation source.

Single-nucleotide polymorphism genotyping on optical thin-film biosensor chips

Zhong, Xiao-bo; Reynolds, Robert; Kidd, Judith R.; Kidd, Kenneth K.; Jenison, Robert; Marlar, Richard A.; Ward, David C.
Fonte: National Academy of Sciences Publicador: National Academy of Sciences
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
26.11%
Single-nucleotide polymorphisms (SNPs) constitute the bulk of human genetic variation and provide excellent markers to identify genetic factors contributing to complex disease susceptibility. A rapid, sensitive, and inexpensive assay is important for large-scale SNP scoring. Here we report the development of a multiplex SNP detection system using silicon chips coated to create a thin-film optical biosensor. Allele-discriminating, aldehyde-labeled oligonucleotides are arrayed and covalently attached to a hydrazinederivatized chip surface. Target sequences (e.g., PCR amplicons) then are hybridized in the presence of a mixture of biotinylated detector probes, one for each SNP, and a thermostable DNA ligase. After a stringent wash (0.01 M NaOH), ligation of biotinylated detector probes to perfectly matched capture oligomers is visualized as a color change on the chip surface (gold to blue/purple) after brief incubations with an anti-biotin IgG-horseradish peroxidase conjugate and a precipitable horseradish peroxidase substrate. Testing of PCR fragments is completed in 30–40 min. Up to several hundred SNPs can be assayed on a 36-mm2 chip, and SNP scoring can be done by eye or with a simple digital-camera system. This assay is extremely robust...

Functional computational model for optimal color coding

Romney, A. Kimball; Chiao, Chuan-Chin
Fonte: National Academy of Sciences Publicador: National Academy of Sciences
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
26.22%
This paper presents a computational model for color coding that provides a functional explanation of how humans perceive colors in a homogeneous color space. Beginning with known properties of human cone photoreceptors, the model estimates the locations of the reflectance spectra of Munsell color chips in perceptual color space as represented in the CIE L*a*b* color system. The fit between the two structures is within the limits of expected measurement error. Estimates of the structure of perceptual color space for color anomalous dichromats missing one of the normal cone photoreceptors correspond closely to results from the Farnsworth–Munsell color test. An unanticipated outcome of the model provides a functional explanation of why additive lights are always red, green, and blue and provide maximum gamut for color monitors and color television even though they do not correspond to human cone absorption spectra.

Microfluidic carbon-blackened polydimethylsiloxane device with reduced ultra violet background fluorescence for simultaneous two-color ultra violet/visible-laser induced fluorescence detection in single cell analysis

Galla, Lukas; Greif, Dominik; Regtmeier, Jan; Anselmetti, Dario
Fonte: American Institute of Physics Publicador: American Institute of Physics
Tipo: Artigo de Revista Científica
Publicado em 12/01/2012 Português
Relevância na Pesquisa
26.09%
In single cell analysis (SCA), individual cell-specific properties and inhomogeneous cellular responses are being investigated that is not subjected to ensemble-averaging or heterogeneous cell population effects. For proteomic single cell analysis, ultra-sensitive and reproducible separation and detection techniques are essential. Microfluidic devices combined with UV laser induced fluorescence (UV-LIF) detection have been proposed to fulfill these requirements. Here, we report on a novel microfluidic chip fabrication procedure that combines straightforward production of polydimethylsiloxane (PDMS) chips with a reduced UV fluorescence background (83%-reduction) by using PDMS droplets with carbon black pigments (CBP) as additives. The CBP-droplet is placed at the point of detection, whereas the rest of the chip remains transparent, ensuring full optical control of the chip. We systematically studied the relation of the UV background fluorescence at CBP to PDMS ratios (varying from 1:10 to 1:1000) for different UV laser powers. Using a CBP/PDMS ratio of 1:20, detection of a 100 nM tryptophan solution (S/N = 3.5) was possible, providing a theoretical limit of detection of 86 nM (with S/N = 3). Via simultaneous two color UV/VIS-LIF detection...

Use of pilot plant scale continuous fryer to simulate industrial production of potato chips: thermal properties of palm olein blends under continuous frying conditions

Tarmizi, Azmil Haizam Ahmad; Ismail, Razali
Fonte: Wiley Periodicals Inc Publicador: Wiley Periodicals Inc
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
26.11%
Binary blends of palm olein (PO) with sunflower oil (SFO), canola oil (CNO), and cottonseed oil (CSO) were formulated to assess their stability under continuous frying conditions. The results were then compared with those obtained in PO. The oil blends studied were: (1) 60:40 for PO + SFO; (2) 70:30 for PO + CNO; and (3) 50:50 for PO + CSO. The PO and its blends were used to fry potato chips at 180°C for a total of 56 h of operation. The evolution of analytical parameters such as tocols, induction period, color, p-anisidine value, free fatty acid, smoke point, polar compounds, and polymer compounds were evaluated over the frying time. Blending PO with unsaturated oils was generally proved to keep most qualitative parameters comparable to those demonstrated in PO. Indeed, none of the oils surpassed the legislative limits for used frying. Overall, it was noted that oil containing PO and SFO showed higher resistance toward oxidative and hydrolytic behaviors as compared to the other oil blends.

Full-color structured illumination optical sectioning microscopy

Qian, Jia; Lei, Ming; Dan, Dan; Yao, Baoli; Zhou, Xing; Yang, Yanlong; Yan, Shaohui; Min, Junwei; Yu, Xianghua
Fonte: Nature Publishing Group Publicador: Nature Publishing Group
Tipo: Artigo de Revista Científica
Publicado em 29/09/2015 Português
Relevância na Pesquisa
26.21%
In merits of super-resolved resolution and fast speed of three-dimensional (3D) optical sectioning capability, structured illumination microscopy (SIM) has found variety of applications in biomedical imaging. So far, most SIM systems use monochrome CCD or CMOS cameras to acquire images and discard the natural color information of the specimens. Although multicolor integration scheme are employed, multiple excitation sources and detectors are required and the spectral information is limited to a few of wavelengths. Here, we report a new method for full-color SIM with a color digital camera. A data processing algorithm based on HSV (Hue, Saturation, and Value) color space is proposed, in which the recorded color raw images are processed in the Hue, Saturation, Value color channels, and then reconstructed to a 3D image with full color. We demonstrated some 3D optical sectioning results on samples such as mixed pollen grains, insects, micro-chips and the surface of coins. The presented technique is applicable to some circumstance where color information plays crucial roles, such as in materials science and surface morphology.

Examination of three systems of surface color by scaled color differences

Indow,Tarow
Fonte: Conselho Brasileiro de Oftalmologia Publicador: Conselho Brasileiro de Oftalmologia
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2003 Português
Relevância na Pesquisa
36.5%
In contrast to the CIE (Commission Internationale de l'Eclairage) colorimetric systems in which colors are specified on the basis of spectrum of light, a system for surface color is displayed by the standard chips. According to the principle by which the standard chips are selected and arranged, we have many different systems. Three representative systems are examined, Munsell, OSA-UCS (Optical Society of America-Uniform Color Scale), and NCA (Natural Color System) of Sweden. Each is a systematization of human cognition of colors, and how we see the difference between two chips j and k plays a different role in each spatial representation. On the basis of observers' assessments, the perceptual difference is scaled as d jk, a numerical value. The structure of each system is quantitatively examined by checking the behavior of d jk. This article is a review of the author's studies in this line.

The distribution of response spectra in the lateral geniculate nucleus compared with reflectance spectra of Munsell color chips

Romney, A. Kimball; D'Andrade, Roy G.; Indow, Tarow
Fonte: National Academy of Sciences Publicador: National Academy of Sciences
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
26.6%
This paper compares the spectral response curves of cells in the lateral geniculate nucleus (LGN) with the reflectance spectra of a large sample of Munsell color chips. By examining the color chips with methods used by neural response researchers and the LGN cells with methods used by psychophysical color researchers, we obtain insights that may be useful for advancing knowledge in both fields. For LGN cells, the prevailing view is that they tend to be clustered into distinct types or along discernible lines or planes when data obtained from selected light stimuli are represented in a three-dimensional space derived from cone contributions. In contrast, the Munsell color chips are viewed as rather evenly distributed in a three-dimensional perceptual space based on the psychophysical judgment of surface colors. We demonstrate that, when the Munsell chips are viewed in the space typically applied to LGN cells, the distribution appears similar to that of the cells and vice versa. We show why this result occurs and suggest that it has implications for studies in both fields.

Color Naming, Lens Aging, and Grue: What the Optics of the Aging Eye Can Teach Us About Color Language

Hardy, Joseph L.; Frederick, Christina M.; Kay, Paul; Werner, John S.
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em /04/2005 Português
Relevância na Pesquisa
26.34%
Many languages without separate terms for green and blue are or were spoken in locations receiving above-average exposure to ultraviolet-B (UV-B) radiation. It has been proposed that this correlation is caused by premature lens aging. This conclusion was supported by an experiment in which younger observers used the term “blue” less often when they described simulated paint chips filtered through the equivalent of an older observer's lens—removing much short-wavelength light—than when they described the unfiltered versions of the same paint chips. Some stimuli that were called “blue” without simulated aging were called “green” when filtered. However, in the experiment reported here, we found that the proportion of “blue” color-name responses did not differ between younger subjects and older observers with known ocular media optical densities. Color naming for stimuli that were nominally green, blue-green, or blue was virtually identical for older and younger observers who viewed the same (unfiltered) stimuli. Our results are inconsistent with the lens-brunescence hypothesis.

Effect of different calcium sources on the antioxidant stability of tortilla chips from extruded and nixtamalized blue corn (Zea mays L.) flours

Sánchez-Madrigal,Miguel Ángel; Quintero-Ramos,Armando; Martínez-Bustos,Fernando; Meléndez-Pizarro,Carmen Oralia; Ruiz-Gutiérrez,Martha Graciela
Fonte: Sociedade Brasileira de Ciência e Tecnologia de Alimentos Publicador: Sociedade Brasileira de Ciência e Tecnologia de Alimentos
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/03/2014 Português
Relevância na Pesquisa
26.6%
This research aimed to develop tortilla chips (TC) high in antioxidants from extruded and nixtamalized blue corn flours prepared with calcium hydroxide Ca(OH)2 and calcium lactate C6H10O6Ca. Tortilla chips were made with extruded flours [0.1% Ca(OH)2; 0.9% C6H10O6Ca; without calcium] and nixtamalized flours [1% Ca(OH)2; 2.95% C6H10O6Ca] using the frying process. Total anthocyanin, total phenolics content, antioxidant activity, color, texture, and oil content were determined. The color of tortilla chips from extruded flours (TCEF) showed high values of the parameters a* and b* indicating a reduction in the blue color. These color parameters were significantly different from those observed in tortilla chips from nixtamalized flours (TCNF), which tended to be more blue. The TCEF retained 15% anthocyanins, 34% phenolics, and 54% antioxidant activity. Pearson's correlation analysis indicated that anthocyanins and phenolics correlated significantly with antioxidant activity and color. TCEF with both calcium sources showed higher fracturability compared with that of TCNF. Oil absorption showed an opposite effect, with lower oil content in TCEF. Nixtamalization and extrusion with C6H10O6Ca resulted in flours and TC high in anthocyanins and antioxidant activity...

Theoretical analysis of the implementation of a quantum phase gate with neutral atoms on atom chips

Charron, E.; Cirone, M. A.; Negretti, A.; Schmiedmayer, J.; Calarco, T.
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 15/03/2006 Português
Relevância na Pesquisa
26.23%
We present a detailed, realistic analysis of the implementation of a proposal for a quantum phase gate based on atomic vibrational states, specializing it to neutral rubidium atoms on atom chips. We show how to create a double--well potential with static currents on the atom chips, using for all relevant parameters values that are achieved with present technology. The potential barrier between the two wells can be modified by varying the currents in order to realize a quantum phase gate for qubit states encoded in the atomic external degree of freedom. The gate performance is analyzed through numerical simulations; the operation time is ~10 ms with a performance fidelity above 99.9%. For storage of the state between the operations the qubit state can be transferred efficiently via Raman transitions to two hyperfine states, where its decoherence is strongly inhibited. In addition we discuss the limits imposed by the proximity of the surface to the gate fidelity.; Comment: 9 pages, 5 color figures

Two-Color Babylon

Georgakopoulos, Agelos; Winkler, Peter
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 17/11/2011 Português
Relevância na Pesquisa
25.9%
We solve the game of Babylon when played with chips of two colors, giving a winning strategy for the second player in all previously unsolved cases.

A correlation between object color and image apparent color in an aerial film false color system

Paes, Steven
Fonte: Rochester Instituto de Tecnologia Publicador: Rochester Instituto de Tecnologia
Tipo: Tese de Doutorado
Português
Relevância na Pesquisa
36.2%
This research project proposes to provide an aid to the photo-interpreter so that he can determine more easily objects of importance Kodak Ektachrome Infrared Aero Film, Type 8443, is utilized by this project as the medium through which this aid will be carried out. Films, such as this one, are visibility and near infrared sensitive color films. The wavelength region of the film's sensitivity is 0. 5 to 0. 9 nm. This film, therefore, is very useful, since it uses its near infrared capability to discriminate between objects that have nearly the same visual appearance but different near infrared characteristics. The infrared sensitive layer produces a cyan positive image which means that the image will appear to vary in different amounts of red in the final image. The method employed is all theoretical in nature, since this is a new type of study. Determining the image transmittance under a known set of conditions is the major portion of the theory. The remainder of the theory is devoted to C I. E. and Munsell Color coordinate determinations. Image formation theory in a color material is on the surface an easy task, but actually is a difficult process. Under the circumstances, determination of the image is accurately done. Theory involving the two types of coordinate determination is straight-forward...

EVALUACIÓN DEL EFECTO DE LA DESHIDRATACIÓN OSMÓTICA Y FRITURA EN DOS VARIEDADES DE YUCA (Manihot esculenta Crantz) EN LA PRODUCCIÓN DE CHIPS

VILLADA,DORA; VILLADA,HECTOR; MOSQUERA,ANDRES
Fonte: DYNA Publicador: DYNA
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/12/2009 Português
Relevância na Pesquisa
26.3%
Se estudióel efecto de la deshidratación osmótica (DO) y de la fritura en dos variedades de yuca en la producción de chips. Se analizaron los contenidos de humedad y de grasa en 10, 20 y 30 minutos de DO, 120, 140 y 160ºC y 60, 90 y 120 segundos de fritura. Constantes: relación producto-solución (1:2), concentración de la solución (5% p/v) y espesor del chips ( 15 milímetros). Se evaluó sensorialmente el grado de aceptación con una escala hedónica de cinco puntos. Se utilizó un diseño factorial de parcelas divididas con bloques al azar y α=5%. La variedad Armenia fue excelente a 20 minutos de DO, 160ºC y 120 segundos de fritura. Sensorialmente fue aceptado con 4.65% de humedad, 1.77% de grasa. Excelente masticabilidad, crujencia, sabor y color. Resultados que pueden ser de interés agroindustrial en la producción de chips de yuca.