23 research outputs found

    Association between grain yield, grain quality and morpho-physiological traits along ten cycles of recurrent selection in bread wheat (triticum aestivum L.)

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    The objective of the present investigation was to examine the relationships between agronomical behavior and grain quality along ten cycles of a recurrent selection program performed under rainfed condition. Twenty-four lines, four for each one of the 0, 2, 4, 6, 8 and 10 cycles of recurrent selection, were evaluated for two consecutive years (2011 and 2012). The experimental lines were evaluated under conventional (CT) and no tillage (NT) systems. Grain yield and grain weight were determined and harvest index and grain number estimated. Flour protein content, sodium dodecyl sulphate sedimentation (IS-SDS) and lactic acid SRC (LASRC) were considered as end-use quality predictive tests. The Spearman correlation coefficient was used to measure the relationships among yield, its components and grain quality parameters. Within the context of CT, flour protein content was negatively associated with all the agronomic variables. The IS-SDS has a negative association with the grain weight; meanwhile, LASRC associated positively with all the agronomic variables. When wheat was grown in NT, the relationship between IS-SDS and harvest index, like LASRC with all agronomic traits, was positive. Confining the discussion to the CT results, after ten cycles of recurrent selection the highest grain yield achieved was accompanied by a decrease in protein percentage. However, the decrease in the percentage of protein in more advanced selection cycles was offset by an improvement of its quality.Fil: Maich, Ricardo H茅ctor. Universidad Nacional de C贸rdoba. Facultad de Ciencias Agropecuarias; ArgentinaFil: Steffolani, Maria Eugenia. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; ArgentinaFil: Di Rienzo, Julio Alejandro. Universidad Nacional de C贸rdoba. Facultad de Ciencias Agropecuarias; ArgentinaFil: Leon, Alberto Edel. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; Argentin

    The role of gluten in breadmaking and the challenge of elaborating gluten-free bread

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    La enfermedad cel铆aca es una enteropat铆a cr贸nica del intestino delgado inmunomediada y promovida por la exposici贸n a una dieta con gluten en individuos gen茅ticamente predispuestos. La interacci贸n de factores gen茅ticos y ambientales provoca la p茅rdida de tolerancia a ciertas prote铆nas presentes en algunos cereales. Recientemente se estableci贸 una prevalencia de celiaqu铆a del 1% en el mundo, con grandes variaciones entre los pa铆ses. El 煤nico tratamiento eficaz es adoptar una dieta libre de gluten. El gluten es una red proteica que se estructura al hidratar la harina y se refuerza mediante el amasado. Est谩 conformado fundamentalmente por dos fracciones proteicas: prolaminas y glutelinas. Estas prote铆nas juegan un rol preponderante en la calidad de los m谩s tradicionales productos de panificaci贸n, por lo que es un gran desaf铆o para investigadores y tecn贸logos elaborar estos productos sin contar con esta red. La polimerizaci贸n de prote铆nas para simular la red de gluten ha mostrado sus limitaciones, por lo que se profundiz贸 en el estudio de las interacciones entre diferentes componentes como un factor determinante para el desarrollo de productos. Sobre esa base se obtuvieron mejores resultados usando almid贸n de mandioca y harina de soja activa, gracias a las interacciones espec铆ficas establecidas entre ambos componentes.Celiac disease is an immunomodulated chronic enteropathy triggered by gluten ingestion in genetically susceptible patients. The interaction between genetic and environmental factors leads to an intolerance toward some proteins present in certain cereals. Recently, the worldwide prevalence of this disease has been estimated in 1%, with an important variation among different countries. Nowadays, the only effective treatment for the disease consists in a lifelong gluten-free diet. Gluten is a protein network formed when four and water are mixed (energy input), and is composed of two main protein fractions: prolamins and glutenins. This protein network is a leading factor determining the quality of most traditional baked products; therefore, obtaining these products without this network is a major challenge for food scientists and technologists. Protein polymerization -other than gluten- has shown limited results in replacing the gluten network; hence, a different approach was adopted, focusing on the study of interactions among different raw components as a key factor in gluten-free products development. With this approach, better results were obtained when using cassava starch and active soy flour, due to specific interactions established between both components.Fil: Sciarini, Lorena Susana. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; ArgentinaFil: Steffolani, Maria Eugenia. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; ArgentinaFil: Leon, Alberto Edel. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; Argentin

    Effect of wheat pearling process on composition and nutritional profile of flour and its bread-making performance

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    Pearling process on wheat grains was evaluated as a strategy to reduce their adverse effect on whole-wheat bread (WWB) quality and simultaneously preserve part of the nutrients of the whole grain. The grains were pearled applying different times (25, 125, 225 and 250 s) before milling. Characteristic, nutritional composition and rheology of the pearled wheat flour (P), and their bread-making performance, were analysed. Whole-wheat flour and refined flour (RF) were used as control. P125s, P225s and P250s exhibited a superior nutritional profile concerning RF. P had lower water absorption and led to higher volume bread with lighter crust and crumb compared to WWB. P125s, P225s and P250s bread showed characteristics similar to those of white bread, but their hardness was lower. The improvement resulted from the extraction of the outermost bran layers, a decrease in insoluble dietary fibre, an increase in the proportion of water-soluble pentosans and a lower protein weakening.Fil: Navarro, Jos茅 Luis. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; ArgentinaFil: Biglione, Camila. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; ArgentinaFil: Paesani, Candela. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; ArgentinaFil: Moiraghi, Malena. Universidad Nacional de C贸rdoba. Facultad de Ciencias Agropecuarias. C谩tedra de Qu铆mica Biol贸gica; Argentina. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; ArgentinaFil: Leon, Alberto Edel. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; Argentina. Universidad Nacional de C贸rdoba. Facultad de Ciencias Agropecuarias. C谩tedra de Qu铆mica Biol贸gica; ArgentinaFil: Steffolani, Maria Eugenia. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; Argentina. Universidad Nacional de C贸rdoba. Facultad de Ciencias Agropecuarias. C谩tedra de Qu铆mica Biol贸gica; Argentin

    Gluten-free laminated baked products: effect of ingredients and emulsifiers on technological quality

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    The aim of this work was to assess the effect of ingredients and emulsifiers on the physical and textural attributes of gluten-free laminated dough pieces and products. Gluten-free flours (soy, rice and cassava), different water levels (76, 68 and 60%), fat samples and emulsifiers (sodium stearoyl lactylate - SSL and diacetyl tartaric acid ester of mono and diglycerides - DATEM) were used to elaborate dough pieces and baked products. Laminated dough samples based on rice/cassava/soy (35:45:20), 60% of water and shortening, presented a high resistance to deformation and showed an inner sheeted structure after baking. The incorporation of the higher doses of SSL and DATEM leads to products of greater specific volume and a tortuous inner conformation due to their layered conformation. This work provides new perspectives into the study of additives with specific action over the components of gluten-free flours and starches, to develop laminated optimum quality products.Fil: de la Horra, Ana Elizabeth. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; ArgentinaFil: Barrera, Gabriela. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; ArgentinaFil: Steffolani, Maria Eugenia. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; ArgentinaFil: Ribotta, Pablo Daniel. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; ArgentinaFil: Leon, Alberto Edel. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; Argentin

    Metodolog铆as alternativas de elaboraci贸n de pan

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    Hacer pan es probablemente una de las tecnolog铆as m谩s antiguas conocidas por la humanidad. Los hallazgos sugieren que la gente de Babilonia, Egipto, Grecia y Roma usaron el pan o productos similares como parte de su dieta. La nutrici贸n humana se basa en productos de cereales, entre los cuales el pan es el m谩s representativo e importante. La calidad del pan fresco a menudo se relaciona con su corteza (grosor, crujencia, color, sabor) y con la estructura de la miga (sabor, textura suave, distribuci贸n y tama帽o de las c茅lulas).Sin embargo, el pan fresco es un producto con una corta vida 煤til y una serie de alteraciones qu铆micas y f铆sicas, conocidas como "staling", que ocurren durante su almacenamiento. Como resultado de estos cambios, la calidad del pan se deteriora gradualmente a medida que pierde su frescura y crujencia, mientras que la rigidez de la miga aumenta. Al mismo tiempo, el agradable aroma se desvanece. Estos problemas de preservaci贸n en combinaci贸n con las crecientes demandas del mercado llevaron a la evoluci贸n de las tecnolog铆as de masas congeladas.Uno de los cambios m谩s importante fue la incorporaci贸n de la baja temperatura. La tecnolog铆a del fr铆o ha permitido que la industria del pan y la boller铆a se hayan adaptado a las nuevas necesidades del consumidor. Esos tipos de productos, como los pre-cocidos o pre-horneados congelados y refrigerados (los llamados productos ?bake-off?), demuestran el alto grado de especializaci贸n del sector.Fil: Steffolani, Maria Eugenia. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias F铆sicas, Exactas y Naturales (FCFEYN). Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba (ICYTAC); ArgentinaFil: Ribotta, Pablo Daniel. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias F铆sicas, Exactas y Naturales (FCFEYN). Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba (ICYTAC); Argentin

    Study of the physicochemical and functional characterization of quinoa and ka帽iwa starches

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    The objective of this work was to study the physico-chemical and functional properties of starch isolated from different quinoa varieties and ka帽iwa ecotypes regarding their possible uses in cereals-derived food. Four ecotypes of ka帽iwa and three varieties of quinoa were analyzed. Starch isolation from quinoa and ka帽iwa flour was carried out by combining two extraction procedures. Quinoa and ka帽iwa isolated starches had similar chemical composition but protein, lipid, and fiber content was lower for quinoa than ka帽iwa starches. The amylose content varied from 9.30 to 8.35% for quinoa and from 17.44 to 10.70% for ka帽iwa starches. Significant differences in pasting properties were observed among quinoa varieties and ka帽iwa ecotypes, quinoa starches had higher peak and final viscosity and lower setback than ka帽iwa. Amylose content correlated negatively with peak viscosity and positively with setback. Ka帽iwa starches yielded higher firmness starch pastes than quinoa starches. No differences in starch granule morphology between quinoa and ka帽iwa were observed, both species showed polygonal granules. However, granules from quinoa were larger ( 2.53 mm) than ka帽iwa granules ( 1.45 mm). Differences in granule size, amylose content, pasting and thermal properties among quinoa and ka帽iwa provide new starch types with a wide range of possibilities for food applications.Fil: Steffolani, Maria Eugenia. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; ArgentinaFil: Leon, Alberto Edel. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; ArgentinaFil: Perez, Gabriela Teresa. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; Argentin

    Effect of pre-hydration of chia (Salvia hispanica L.), seeds and flour on the quality of wheat flour breads

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    Chia is an oleaginous seed rich in protein and fibre, and there has been a recovery in their cultivation in recent years. The objective of the present study was to investigate the effect of the addition of chia seeds or flour (with and without pre-hydration) on the technological and sensory quality of the bread. Chia flour significantly increased the water absorption during kneading, and the effect was more pronounced when the flour was pre-hydrated. Chia flour addition also increased the tenacity (mainly in doughs with pre-hydrated flour) and reduced the extensibility of doughs. Adding 10g/100g chia seeds produced a decrease in bread volume and an increase in crumb firmness, but this effect was lower when seeds were pre-hydrated. With the addition of chia flour at levels of 10g/100g, bread volume remained unchanged in pre-hydrated flour. However, a decrease in the volume of breads made by flour without pre-hydration was also observed. In general, an evaluation of the loaves containing chia by potential consumers, the global score was above 6 out of 9, with no significant differences compared to the control bread. Chia flour without pre-hydration was the only exception where lower values of consumer acceptance were observed.Fil: Steffolani, Maria Eugenia. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; ArgentinaFil: Martinez, Mario M.. Universidad de Valladolid; Espa帽aFil: Leon, Alberto Edel. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; ArgentinaFil: G贸mez, Manuel. Universidad de Valladolid; Espa帽

    Effect of Chia (Salvia hispanica鈥匧) Addition on the Quality of Gluten-Free Bread

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    The objective of this study was to analyze the influence of chia seeds and flour on the organoleptic quality of gluten-free breads. Rice breads were elaborated with the addition of 15鈥塯 of chia flour or seed, either dry or pre-hydrated, per 100鈥塯 of rice flour. The influence of the addition of chia on flour pasting properties and dough proofing behavior was analyzed. The specific volume, weight, texture, color and acceptability of the breads were studied. The addition of chia reduced specific volume and increased the hardness of breads, and the effect was more evident with the flour than with seed. Chia addition minimized weight loss during baking in all cases. The addition of chia flour produced a darker crust and crumb. There were no significant differences between the different breads in the global acceptability, but chia seed breads presented better values in terms of texture than control. Practical Applications This study shows that the use of chia seed and flours in rice bread making allows results in breads with good acceptability. However, the correct selection of seed or flours and previous hydration or not are essential to achieve appropriate results. Thereby, breads with chia seeds showed a better aspect valued by consumers, a higher specific volume and a lower firmness than breads made with chia flour, without a quality improvement in the case of a previous prehydration.Fil: Steffolani, Maria Eugenia. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas; Argentina. Universidad Nacional de C贸rdoba. Facultad de Ciencias Agropecuarias; ArgentinaFil: De la Hera, Esther. Universidad de Valladolid; Espa帽aFil: Perez, Gabriela Teresa. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas; Argentina. Universidad Nacional de C贸rdoba. Facultad de Ciencias Agropecuarias; ArgentinaFil: G贸mez, Manuel. Universidad de Valladolid; Espa帽

    Effect of heat-treated wheat germ on dough properties and crackers quality

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    This study aims to analyse the influence of heat-treated wheat germ on dough properties and cracker quality. Different substitution levels of wheat flour were evaluated (0%, 10%, 20% and 30%). Dough rheological properties and stress relaxation behaviour were determined. Chemical characteristics, baking performance, texture, water activity and sensory analyses were performed on crackers. Wheat germ weakened the dough structure. The following mechanisms were suggested to explain this weakening effect: the addition of wheat germ diluted gluten; flour components and germ competed for water and decreased the water availability for gluten formation; and germ particles physically disrupted the continuity of the gluten network. Nevertheless, good quality crackers were obtained and their nutritional value was improved, with remarkable increments in protein, fibre and mineral contents. Also, high acceptance in sensory evaluation was recorded at substitution levels of 20% and 30% of germ, compared to control sample (0%).Fil: Meriles, Silvina Patricia. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; ArgentinaFil: Penci, Maria Cecilia. Universidad Nacional de C贸rdoba. Facultad de Ciencias Exactas, F铆sicas y Naturales; Argentina. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; ArgentinaFil: Steffolani, Maria Eugenia. Universidad Nacional de C贸rdoba. Facultad de Ciencias Exactas, F铆sicas y Naturales; Argentina. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; Argentina. Universidad Nacional de C贸rdoba. Facultad de Ciencias Agropecuarias; ArgentinaFil: Ribotta, Pablo Daniel. Universidad Nacional de C贸rdoba. Facultad de Ciencias Exactas, F铆sicas y Naturales; Argentina. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; Argentin

    Physico-chemical characterization of protein fraction from stabilized wheat germ

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    Wheat germ shows the highest nutritional value of the kernel. It is highly susceptible to rancidity due to high content of unsaturated fat and presence of oxidative and hydrolytic enzymes. In order to improve its shelf life, it is necessary to inactivate these enzymes by a thermal process. In this work the functional properties and some characteristics of the protein fraction of treated wheat germ were evaluated. Sequential extraction of proteins showed loss of protein solubility and formation of aggregates after heating. DSC thermograms showed that wheat germ treated for 20聽min at 175聽掳C reached a protein denaturation degree of ~ 77%. The stabilization process of wheat germ affected significantly some functional properties, such as foaming stability and protein solubility at pH 2 and pH 8. Nevertheless, heating did not affect the water holding, oil holding and foaming capacity of protein isolates.Fil: Meriles, Silvina Patricia. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; ArgentinaFil: Steffolani, Maria Eugenia. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; ArgentinaFil: Leon, Alberto Edel. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; ArgentinaFil: Penci, Maria Cecilia. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; ArgentinaFil: Ribotta, Pablo Daniel. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba. Universidad Nacional de C贸rdoba. Facultad de Ciencias Qu铆micas. Instituto de Ciencia y Tecnolog铆a de Alimentos C贸rdoba; Argentina. Universidad Nacional de C贸rdoba. Secretar铆a de Ciencia y Tecnolog铆a. Instituto Superior de Investigaci贸n, Desarrollo y Servicio de Alimentos; Argentin
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