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20211
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Subject: Biochemistry × End date: 2021 × Start date: 2020 × Type: Thesis × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    Influence of organic vis-a-vis inorganic farming on quality parameters of adzuki bean [Vigna angularis (Willd.) Ohwi & Ohashi]
    (Palampur, 2021-08-10) Kharwal, Neerja; Singh, Nageswer
    In the present investigation entitled “Influence of organic vis-a-vis inorganic farming on quality parameters of adzuki bean [Vigna angularis (Willd.) Ohwi & Ohashi]” the fifteen genotypes of adzuki bean grown under inorganic, organic and Zero Budget Natural Farming (ZBNF) production system were procured during 2018-19 and 2019-20, from the Department of Organic Agriculture and Natural Farming, CSK HPKV, Palampur were evaluated in triplicate for various biochemical constituents for quality significance and nutritional aspects by following standard procedures. Besides, the phytochemical constituents, antioxidant properties and anti-nutritional factors analysed in husk and de-husk mature seed samples. Differences among the adzuki bean genotypes grown under three different production systems were also apparent. The mean value of genotypes grown under ZBNF during the both the years of experimentation showed significant variation for crude protein (19.19-22.13 %), in vitro protein digestibility (79.43-90.48 %), methionine (0.76-1.38 g/100g protein), tryptophan (1.49 -1.87 g/100g protein), PPO activity (0.050-0.367 ΔOD/min), sodium (89.85-123.11 mg/100g), potassium (839.67-1574.72 mg/100g), calcium (253.33- 409.51 mg/100g), magnesium (116.11-178.86 mg/100g), copper (1.21-2.09 mg/100g), iron (3.99- 8.84 mg/100g), manganese (1.24-2.12 mg/100g), zinc (1.21 -2.09 mg/100g), total phenols (1074.23- 2011.78 mg/100g), simple phenols (637.68-944.42 mg/100g), flavonoids (18.18-24.46 mg/100g), total carotenoids (1.234-4.739 µg/g), antioxidant activity (0.520-1.776 μg/ml), trypsin inhibitor activity (8903-11055 TIA U/g), tannins (261.75-942.18), saponins (59.58-108.1 mg/100g) and phytic acid (187.77-257.39 mg/100g). Under ZBNF production system recorded significantly higher values for in vitro protein digestibility, limiting amino acids (methionine and tryptophan), PPO activity, protein fractionations and certain minerals (sodium, calcium, magnesium, iron, zinc, manganese and copper), phytochemical constituents (total phenols, simple phenols, and flavonoids), antioxidant activity and some anti-nutritional factors like tannins, saponins, whereas for crude protein content, mineral (potassium), total carotenoids, anti-nutritional factor (phytic acid and trypsin inhibitor activity) content significantly higher values were recorded in adzuki bean genotypes grown under inorganic system as compare to ZBNF system. Multipurpose / versatile adzuki bean genotypes grown under inorganic, organic and ZBNF production system genotypes were identified based on genotypic rating under each production system as ADHP-6, ADHP-3 and LOCAL TOTRU ranked first, second and third respectively under inorganic system, In case of organic production system genotypes HPU-51, ADHP-9 and ADHP-3 occupied the first, second and third position, respectively. While, under ZBNF production system first rank occupied by genotype EC-340286 followed by ADHP-6 and ADHP-8, based on the cumulative grading for nutritional and phytochemical constituents. De-husking process of adzuki bean mature seeds revealed substantial decrease in phytochemical constituents i.e. total phenols, simple phenols, flavonoids, total carotenoids and anti-nutritional factors like saponins and tannins while increase in trypsin inhibitor activity and phytic acid. The potentially superior genotypes/varieties thus identified can be used for further developmental research by the plant breeders and cultivation on a large scale by the farmers of H.P and others.