NUTRITIONAL COMPOSITION AND ANTINUTRITIONAL FACTORS OF LITTLE-KNOWN SPECIES OF VIGNA | COMPOSICIÓN NUTRICIONAL Y FACTORES ANTINUTRICIONAL DE ESPECIES POCO CONOCIDAS DE VIGNA
2012
Kalidass, Chinnamadasamy | Mohan, Veerabahu Ramasamy
English. The seeds of Vigna trilobata, V. radiata var. sublobata, V. umbellata, V. unguiculata subsp. cylindrica, V. aconitifolia, V. vexillata and V. bourneae were collected from different geographical regions in Western Ghats, Tamil Nadu. They were analyzed for their proximate and mineral composition, vitamins (niacin and ascorbic acids), fatty acid profiles, amino acid profiles of total seed proteins, in vitro protein digestibility (IVPD) and certain antinutritional factors. The crude protein ranged from 18.24 to 26.12%, crude lipid 3.18 to 6.48%, total dietary fibre 3.42 to 7.48%, ash 3.10 to 4.12% and carbohydrates 59.44 to 72.06%. Energy values of the seeds were 1584.87 – 1644.34 kJ100g-1DM, which were comparable to those of other legumes. The fatty acid profiles of all the species of Vigna revealed that the seed lipids contained higher concentrations of palmitic, oleic, linoleic and linolenic acids. The essential amino acid profiles of total seed proteins compared favourably with FAO/WHO (1991) requirements, except that there were deficiencies of sulphur containing amino acids in all the species of Vigna. The IVPD of the different Vigna species ranged from 70.38 to 79.12%. Antinutritional substances like total free phenolics, tannins, L-DOPA (3, 4-dihydroxyphenylalanine), phytic acid, hydrogen cynide, trypsin inhibitor activity, oligosaccharides and phytohaemagglutinating activity were also investigated. The antinutritional factors that were detected were thought to have little nutritional significance if the beans are properly processed.
Show more [+] Less [-]Spanish; Castilian. Las semillas de Vigna trilobata, V. radiata var. sublobata, V. umbellata, V. unguiculata subsp. cylindrica, V. aconitifolia, V. vexillata and V. bourneae se colectaron de diferentes regiones geográficas en el oeste de Ghats Tamil Nadu. Se analizó su composición proximal y mineral, vitaminas (niacina y ácido ascórbico), perfiles de ácidos grasos, perfiles de aminoácidos de la proteína total de la semillas, digestibilidad de la proteína in vitro (IVPD) y algunos factores antinutricionales. La proteína cruda tuvo un rango entre 18.24 a 26.12%, lípidos totales de 3.8 a 6.48%, fibra dietética total de 3.42 a 7.48%, cenizas de 3.10 a 4.12% y carbohidratos de 59.44 a 72.06%. Los valores de energía de la semilla estuvieron entre 1584.87 a 1644.34 kJ100g-1MS, los cuales fueron comparables con otras leguminosas. Los perfiles de ácidos grasos de todas las especies de Vigna revelaron altas concentraciones de ácido oleico, linoleico y linolenico. Los perfiles de aminoácidos esenciales del total de proteína de la semilla se compararon favorablemente con los requerimientos de la FAO/WHO (1991), con excepción de ciertas deficiencias de aminoácidos azufrados en todas las especies de Vigna El IVPD de las diferentes especies de Vigna tuvo un rango de 70.38 a 79.12%. Sustancias antinutricionales como el total de fenoles libres, taninos, L-DOPA (3-4 dihidroxifenilalanina), ácido fitico, cinacina hidrogenada, actividad inhibidora de la tripsina, oligosacáridos y actividad fitohematoaglutinadora también se determinaron. Los factores antinutricionales que fueron detectados, se presume que presentan una pequeña significancia si los frijoles son procesados correctamente.
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