ANTI-NUTRITIONAL FACTORS AND ANTIOXIDANT CAPACITY IN SELECTED GENOTYPES OF SORGHUM [Sorghum bicolor L. (Moench)]

K. HARIPRASANNA¹*, V. AGTE², M. ELANGOVAN³, S. GITE⁴, A. KISHORE^5
1ICAR-Indian Institute of Millets Research, Rajendranagar, Hyderabad 500030, India
²Agharkar Research Institute, G.G. Agarkar Road, Pune 411004, India
³ICAR-Indian Institute of Millets Research,Rajendranagar, Hyderabad 500030, India
⁴Agharkar Research Institute, G.G. Agarkar Road, Pune 411004, India
⁵Agharkar Research Institute, G.G. Agarkar Road, Pune 411004, India
* Corresponding Author : hari@sorghum.res.in

Received : 10-08-2015     Accepted : 31-08-2015     Published : 07-11-2015
Volume : 7     Issue : 8       Pages : 620 - 625
Int J Agr Sci 7.8 (2015):620-625

Keywords : Antioxidant capacity, Nutritional quality, Phytate,Polyphenols, Sorghum
Academic Editor : Dr. C. Babou, Dr Ahmed Abdul Haleem Khan, Dr. Arun Dinkar Padhye, Dr. Iswar Chandra Mohanty, Kapil Suresh Patil, Hany Samir Osman, Mr. Diwakar Y, Dr Richa Singh, Dr. Ajay
Conflict of Interest : None declared
Acknowledgements/Funding : None declared
Author Contribution : None declared

Sorghum is a staple food in the arid and semi-arid tropics of Africa and Asia with nutritionally superior grains compared to fine cereals. Nutritional studies in sorghum are mostly confined to major entities like carbohydrate, protein and fat, and very limited reports are available on anti-nutritional factors and antioxidant capacity. With growing interest on better health of the population through diet based interventions for both rich and poor, like functional foods, sorghum will gain prominence in the diets because of its nutritional benefits. Contents of total phenolic compounds, phytates and fibre, and antioxidant capacity (TEAC) were estimated in grains of 200 sorghum genotypes including adapted cultivars and parental lines.Significant variability was observed for all the factors studied. The total polyphenols ranged from 44 to 1272 mg gallic acid eq./100 g, and the highest polyphenols were present in SSG 59-3 followed by Urja (1135-1272mg gallic acid eq./100 g). Phytatecontent varied between 720 and 3909 mg/100g. The maximum phytate was found in the germplasm accession IS 8525 (3909 mg/100g) followed by IS 14131 (3903 mg/100g). Fibre content also exhibited wide range (5.2-20.9%). The highest antioxidant capacity was shown by SSG 59-3 followed by IS 8525 and Urja. Results were confirmed with high repeatability and very high correlation (r = 0.6-0.9, p < 0.01). The information generated will aid in identifying suitable donor sources for development of trait-specific sorghum genotypes suitable for end-products that can act as functional foods.