Evaluation of nutritional, antinutritional and antioxidant status of oat genotypes
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Date
2017
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Punjab Agricultural University, Ludhiana
Abstract
Forty three oat genotypes including six cultivars and thirty seven advance breeding lines were evaluated for carbohydrate composition, protein and mineral contents and antinutritional factors such as phytic acid, saponin and tannin contents. The average contents of total soluble sugars, starch and total protein were 5.3, 494.3 and 182.9 mg/g respectively. The average content of zinc (8.3 mg/100g) was higher followed by iron content (3.5 mg/100g) in oats. Eleven genotypes namely OL-1876, OL-1769, OL-1841, OL-1865, OL-1843, OL-1873, OL-1835, OL-1866, OL-10, OL-125, OL-1847 possessed low antinutritional factors in terms of phytic acid, saponin and tannin contents. Antioxidant potential of these genotypes was estimated on the basis of ferric reducing antioxidant power (FRAP), total reducing power and DPPH free radical, hydroxyl radical, superoxide anion radical and nitric oxide radical scavenging activities. Seven genotypes namely OL-1843, OL-1835, OL-1873, OL-1865, OL-1875, OL-1876 and OL-1866 depicted high antioxidant activity. SDS-PAGE profile of protein revealed significant difference in terms of intensity and presence of bands. The genotypes were divided into low, medium and high categories on the basis of all the above parameters studied. Five genotypes namely OL-1878, OL-1847, OL-1868, OL-1837 and OL-1866 were reported to have high protein content. OL-1865 was the best genotype as it contained high β-glucan content, high antioxidant potential and low antinutritional factors followed by OL-1847 which was having high protein content, medium/high antioxidant potential and lied in low range of antinutritional factors. So, these genotypes may be considered good for human consumption and use in breeding programs.
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