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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Comparison of nutritional and antinutritional factors in soybean and fababean seeds with or without cortex
Soil Science and Plant Nutrition, Volume 46, No. 2, Year 2000
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Description
The composition and contents of nutritional factors such as proteins, lipids, carbohydrates, fibers, amino acids, and antinutritional factors such as trypsin inhibitors, phytic acid, and tannins were compared in soybean and fababean seeds with emphasis placed on the nutritional improvement of the seeds by cortex removal. Protein hydrolysis analysis for both whole seeds and seed with cortex removed revealed the presence of a large amount of lysine, arginine, aspartic acid, glutamic acid, glycine, and leucine while these seeds contained a low level of tryptophan, cystine, and methionine. Some antinutritional factors such as trypsin inhibitors, phytic acid, and tannins were detected in soybean and fababean seeds: phytic acid content and trypsin inhibitor activity were higher in soybean seeds than in fababean seeds while the difference in the tannin content was less pronounced. It was found that most of the tannins occurred in the cortex of the soybean and fababean seeds. Tannins are polyphenolic compounds that readily form indigestible complexes with proteins and other macromolecules under specific environmental conditions. By removal of the cortex, tannins were almost completely eliminated without changes in the protein composition and amino acids. From these results, it is assumed that since soybean and fababean seeds contained a high concentration of antinutritional factors in the cortex such as tannins, the utilization of the legume seeds after removal of all of the cortex is suitable for human diet or industrial products. © 2000, Taylor & Francis Group, LLC.
Authors & Co-Authors
El-Shemy, Hany A.
Egypt, Giza
Faculty of Agriculture
Abdel-Rahim, Emam Mobdy
Egypt, Giza
Faculty of Agriculture
Shaban, Omar
Egypt, Giza
Faculty of Agriculture
Ragab, Awad A.
Egypt, Giza
Faculty of Agriculture
Carnovale, Emelia
Italy, Rome
Istituto Nazionale Di Ricerca Per Gli Alimenti e la Nutrizione
Fujita, Kounosuke
Japan, Higashihiroshima
Hiroshima University
Statistics
Citations: 19
Authors: 6
Affiliations: 3
Identifiers
Doi:
10.1080/00380768.2000.10408804
ISSN:
00380768
e-ISSN:
17470765