Techno-functional properties and antioxidant capacity of the concentrate and protein fractions of Leucaena spp. seeds.
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| Title: | Techno-functional properties and antioxidant capacity of the concentrate and protein fractions of Leucaena spp. seeds. |
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| Alternate Title: | Propiedades tecno-funcionales y capacidad antioxidante del concentrado y fracciones proteicas de semillas de Leucaena spp. |
| Authors: | Noyola-Altamirano, Beatriz1 bnoyolaa2000@alumno.ipn.mx, Leticia Méndez-Lagunas, Lilia1, Rodríguez-Ramírez, Juan1, Sandoval-Torres, Sadoth1, Victoria Aquino-González, Laura1, Gerardo Barriada-Bernal, Luis2 |
| Source: | Archivos Latinoamericanos de Nutrición. jul-sep2022, Vol. 72 Issue 3, p196-204. 9p. |
| Subjects: | OXIDANT status, GLUTELINS, ALBUMINS, PROTEINS, SEEDS, PETROLEUM |
| Geographic Terms: | OAXACA de Juarez (Mexico) |
| Abstract (English): | The use of vegetable proteins as ingredients in food systems is based on their functional properties. The water and oil holding capacity, foaming, and emulsifying capacity/stability, and antioxidant assay of the protein fractions - albumins, globulins 7S/11S, glutelins and prolamins - isolated from leucaena seed were evaluated. Objective: The objective of this study was to evaluate the functional properties and antioxidant capacity of the concentrate and protein fractions of ripe Leucaena spp. seeds. Materials and methods: Ripe leucaena seeds were collected and evaluated in Oaxaca, Mexico (16°59'21"N 96°43'26"O) during the months of February-April 2021. The protein concentrate was isolated by isoelectric precipitation (pH=9, pH=4). The albumins, globulins, glutelins and prolamins were isolated based on their solubility properties in different extracting solutions. Results: Glutelins constituted the main protein fraction (75.88%). Prolamins were not found. The glutelins fractions showed the highest oil holding capacity (0.93±0.08 mL g-1). The albumins fraction had the highest water holding capacity (2.53±0.15 mL g-1), foaming capacity and foam stability (71.83±1.26 % and 70.00±0.00%, respectively) and antioxidant capacity (18.09±0.88%). The globulins exhibited the highest emulsifying capacity and emulsion stability (56.83±1.76% and 55.67±1.20%, respectively). Conclusions: The concentrate and protein fraction of leucaena seeds showed different techno-functional and antioxidant properties of interest for the food industry, like those showed by other commercial vegetable proteins. [ABSTRACT FROM AUTHOR] |
| Abstract (Spanish): | El uso de proteínas vegetales como ingredientes en sistemas alimentarios se basa en sus propiedades funcionales. Se evaluó la capacidad de retención de agua y aceite, la capacidad/estabilidad espumante y emulsionante y el ensayo antioxidante de las fracciones proteicas -albúminas, globulinas 7S/11S, glutelinas y prolaminas-aisladas de las semillas de leucaena. Objetivo: El objetivo de este estudio fue evaluar las propiedades funcionales y la capacidad antioxidante del concentrado y las fracciones proteicas de las semillas maduras de Leucaena spp. Materiales y métodos: Las semillas maduras de leucaena fueron recolectadas y evaluadas en Oaxaca, México (16°59'21"N 96°43'26"O) durante los meses de febrero-abril del año 2021. Se usó harina de leucaena desgrasada para la preparación de las fracciones proteicas. El concentrado proteico se aisló por precipitación isoeléctrica (pH=9, pH=4). Las albúminas, globulinas, glutelinas y prolaminas se aislaron en función de sus propiedades de solubilidad en diferentes soluciones de extracción. Resultados: Las glutelinas constituyeron la principal fracción proteica (75,88%). No se encontraron prolaminas. La fracción de glutelinas mostró la mayor capacidad de retención de aceite (0.93±0,08 mL g-1). La fracción de albúminas presentó la mayor capacidad de retención de agua (2,53±0,15 mL g-1), capacidad espumante y estabilidad de la espuma (71,83±1,26% y 70,00±0,00%, respectivamente) y capacidad antioxidante (18,09±0,88%). Las globulinas mostraron la mayor capacidad emulsionante y estabilidad de la emulsión (56,83±1,76 y 55,67±1,20%, respectivamente). Conclusiones: El concentrado y las fracciones proteicas de las semillas de leucaena mostraron diferentes propiedades tecno-funcionales y antioxidantes de interés para la industria alimentaria, similares a los reportados por diversas proteínas vegetales comerciales. [ABSTRACT FROM AUTHOR] |
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| Database: | MedicLatina |
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