Reactive Lysine in Foodstuffs as Measured by a Rapid Dye‐binding Procedure

Hurrell, Richard F.; Lerman, P. M.; Carpenter, K. J.

doi:10.1111/j.1365-2621.1979.tb03485.x

Cited by 116 publications

(50 citation statements)

References 29 publications

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“…Por otra parte, la LPM, a diferencia de la LP, tiene mayor contenido de vitaminas, algunas de las cuales son mas inestables en las condiciones de elaboration y almacenamiento: se eligio medir el acido ascorbico por considerarse la vitamina mas labil bajo las condiciones de almacenamiento establecidas 1 *. Se determine mdice de peroxides 1 ' cada 15 dfas, lisina disponible 8 , acido ascorbico 11 y acido linoleico* mensualmente durante su almacenamiento a 20°C y 37°C por un perfodo de un ano.…”

Section: Materials Y Mltodosunclassified

Formulación, fabricación y evaluación de una formula láctea para el Programa Nacional de Alimentación Complementaria en Chile.

King

et al. 1991

Rev. chil. pediatr.

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The complementary feeding national programme (PNAC) delivers 2 kg-month of dried full-fat cow's milk I.LP) to 0-1 year old infants. The ourpose of this work was to design, produce and evaluate nutrient stability and shelf life of a modified LP milk formula (LPM), which seems nutritionally more adequate for infants and is of s'milar cost than LP, to be included into the PNAC. LPM has the following attributes: P% 12.0 (LP 21.8%): casein/whey proteins rat'o: 40 to 50/60 to 50 (LP 80/20); more digestible fats; essential fatty acids: > 4% of total calories; vitamins and minerals which cover 100% daily requirements ; or 0 to 6 months old infants; prote ; n and energy can be modulated between 1,5 and 2.25 g/100 ml and 50-75 kcal/100 ml respectively, forty tons of LPM were produced in accordance with our specifications for a field study, Quality controls on the product showed the production feasibility of such a formula at a lower price than LP. To determine shelf life, periodical analysis of peroxides, available lyslne, ascorbic ac:d and linoleic acid were carried out in LPM stored for 1 year at 20°C and 37°C. It was found that LPM has an optimum shelf life of 7 months when packed in the same material that is now being ; n use for LP. Its is suggested that 3 kg-month of LPM could be delivered if the product is to be included into the PNAC, because in comparison with 2 kg-month of LP, this would mean an adequate protein supply, a 50% increase in energy supo'V and an additional cost of only 20%. (Key words: infant formula, design, shelf life, quality control).El Ministerio de Salud de Chile, a traves del "Programa Nacional de Alimentacion Complementaria" (PNAC) entrega 2 kg por mes de leche entera de vaca en polvo (LP) a los ninos de 0 a 1 afio.La LP reconstituida a 10% aporta 2,7 g protemas/100 ml, que equivalen a 5,45 g protemas/ 100 kcal, muy por encima de las recomendaciones para nifios de esta edad, que son entre 1,2 y 1,9 g protemas/100 ml y 1,8 a 2,8 g proteinas/100 kcal 1 . El aporte de protemas, expresado como porcentaje de las calorfas (P%), es considerablernente mayor para la leche de vaca (P% 21,8) que para la leche materna (P% 6,6), mientras las recomendaciones sugieren P% maximo de ll^1. El exceso de protein as es potencialmente peligroso, ya que puede provocar aumento de amonio, aminoacidos y urea en la sangre, lo que contribuye a aunientar la carga osmotica renal. La entrega de 2 kg de LP a los Institute de Nutricion y Tecnologia de los AJimentos, INTA, Universidad de Chile. ninos de 0 a 12 meses significa ofrecerles, en promedio, 17,98 g proteinas-dia, que. segun tablas de cobertura del Ministerio de Salud, sobrepasan los requerimientos proteicos diarios en rangos de 126% a 233% 2 . mientras la cantidad de energi'a entregada (330 kcal-dia) cubre, segiin las mismas tablas, entre 38,5% y 68,0% de los requerimientos diarios para ninos de 6 a 11 y 0 a 2 meses. respectivamente 2 . El exceso de protemas obliga a diluir la leche para los lactantes menores, en muchos casos a 7 u 8% en vez de 10%, lo que implica ...

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Section: Materials Y Mltodosunclassified

Formulación, fabricación y evaluación de una formula láctea para el Programa Nacional de Alimentación Complementaria en Chile.

King

et al. 1991

Rev. chil. pediatr.

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“…Nitrogen solubility was carried according to Lyman et al procedure (5). Available lysine was determined by (7). Free and total gossypol determinations was carried according to the method of Pons et al (8).…”

Section: Methods Of Analysismentioning

confidence: 99%

Effect of some degossypolisation treatments of cottonseed meal on its functional properties

Mohamed¹

1993

Grasas y Aceites

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RESUMENEfecto de algunos tratamientos de desgosiposilación de harina de semilla de algodón sobre sus propiedades funcionales.La presencia de gosipol es un factor limitante en el uso de harina de semilla de algodón para la alimentación animal y humana. El gosipol, en forma libre, ha sido encontrado tóxico para animales monogástricos, y el Grupo Asesor en Proteína de Naciones Unidas ha limitado su contenido en productos proteínicos de semilla de algodón al 0,06%. En el presente trabajo se ha estudiado el efecto de algunas técnicas de desgosiposilación sobre las propiedades funcionales de harinas de semillas de algodón. Los mejores resultados se obtuvieron con el método del ácido acético ya que mejoró la solubilidad de nitrógeno y lisina disponible, redujo el gosipol libre al 0,03% y aumentó la capacidad de absorción de agua, humectabilidad y fluidez. El producto proteínico resultante de este tratamiento puede ser incorporado en productos alimenticios instantáneos y horneados. El tratamiento azeótropo:amonio produjo efectos similares. El tratamiento con etanolamina está recomendado para la preparación de productos proteínicos para alimentos instantáneos. PALABRAS-CLAVE: Gosipol (eliminación) -Harina -Propiedades funcionales -Semilla de algodón. SUMMARYEffect of some degossypolisation treatments of cottonsed meal on its functional properties.

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“…Color of biological products is drastically influenced during the thermal processing mainly due to the non-enzymatic browning reaction (Maillard) which leads to protein deterioration. In extrusion processing, high temperature and semi-dry condition favors the browning reaction which results in amino acid destruction and unavailability of some of essential amino acids such as lysine and tryptophan (Hurrell et al, 1979). The required reduced sugar for this process is provided by hydrolysis and dextrinization of starch component of the feed blend induced by mechanical shearing (Shagun & Harper, 1980).…”

Section: Pellet Durability Index (Pdi)mentioning

confidence: 99%

Twin-Screw Extrusion Processing of Rainbow trout (Oncorhynchus mykiss) Feeds Using Graded Levels of High Protein Corn-Based Distillers Dried Grains (HP-DDG) and Conventional Distillers Dried Grains with Solubles (DDGS)

Fallahi¹,

Rosentrater²,

Muthukumarappan³

et al. 2013

JFR

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Twin-screw extrusion cooking trials were performed to investigate the differential effects of conventional DDGS (DDGS) and HP-DDG inclusion, as fishmeal replacers, on physical properties (moisture content, water activity, thermal properties, expansion ratio, unit density, bulk density, water absorption, solubility and pellet durability indices, and color) of Rainbow trout (Oncorhynchus mykiss) feed. Four ingredient blends were formulated with 20 and 40% C-DDGS, and 20 and 40% HP-DDG, along with other required dietary ingredients. Each diet was extruded using two replications; a fishmeal based diet acted as the control diet. The highest and the lowest extrudate moisture content and water activity were observed for the diets containing 20% DDGS and 40% HP-DDG, respectively. Compared to the control diet, increasing HP-DDG content from 20 to 40% had no effect on the bulk density of the products, while increasing DDGS content from 20-40% led to a considerable rise in bulk density of the extrudates by 14.2 and 6%, respectively. Also, extrudates with the lowest brightness, greenness, and yellowness values were obtained from the diet containing 20% DDGS, whereas the most color intensity values were observed for the diets containing 40% DDGS and 20% HP-DDG. Increasing DDGS and HP-DDG from 0-40% caused a remarkable increase in water absorption index, by 72 and 30%, respectively. Likewise, the water solubility index increased, but in a considerably lesser order of magnitude. High pellet durability index of more than 99% was achieved with inclusion of either DDGS or HP-DDG. None of the diets impacted the thermal properties of the extrudates. Inclusion of 20 and 40% DDGS resulted in the extrudates with the largest and the smallest unit density values of nearly 887 and 750 kg/m 3 , respectively. As was expected, expansion ratio decreased with increasing unit density. Increasing inclusion levels of HP-DDG did not show any effect on unit density or expansion ratio of the products. Future research should concentrate on investigating the effects of both extrusion processing and graded levels of different types of DDGS on Rainbow trout feeds.

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Reactive Lysine in Foodstuffs as Measured by a Rapid Dye‐binding Procedure

Cited by 116 publications

References 29 publications

Formulación, fabricación y evaluación de una formula láctea para el Programa Nacional de Alimentación Complementaria en Chile.

Formulación, fabricación y evaluación de una formula láctea para el Programa Nacional de Alimentación Complementaria en Chile.

Effect of some degossypolisation treatments of cottonseed meal on its functional properties

Twin-Screw Extrusion Processing of Rainbow trout (Oncorhynchus mykiss) Feeds Using Graded Levels of High Protein Corn-Based Distillers Dried Grains (HP-DDG) and Conventional Distillers Dried Grains with Solubles (DDGS)

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