Considering nutraceutical potentiality of phytochemicals, a few indigenous red rice germplsams of Assam, India were analysed for various phytochemicals, antioxidant activities and a few mineral contents. Among the sixteen germplasm analysed in their brown form, the total phenol content, total flavonoid content, and the anthocyanin content per100 gm dry matter ranged from752.89 mg±18.12 ('Ranga Dariya') to 2223 mg±33.48 ('Amana Bao'), 252.12±15.40mg ('Ixojoy') to 1000.75±86.93mg ('Dal Bao') and 76.05± 0.32 µg ('Kolaguni') to159.42±15.97 µg ('Betu'), respectively. For the polished form of rice, the same in 100 gm dry matter ranged from76.51 mg±1.46 in 'Ranga Dariya' to 1409 mg±100.88 in 'Kolaguni', from 32.09± 7.17 mg in 'Ranga Dariya' to 374.46± 2.05mg in 'Negheribao' and from 17.91±5.08µg ('Biroi') to 115.42±11.72µg ('Hurupibao'), respectively. The antioxidant activities were observed to be the highest 96.00±0.26% in 'Negheribao' (for brown form of rice) and 86.35± 3.88% in 'Kenekuabao' (for polished form of rice) and the lowest 81.54±0.23% in 'Betu'(for brown form of rice) and 59.65±4.64 % in 'Ranga Dariya' (polished rice), respectively. In brown rice, on dry weight basis, the iron, zinc and manganese content ranged from 2.12-54.40 mg per 100 gm, 2.42 mg to 26.57mg per 100 gm and 0.04 mg per 100 gm to 25.13 mg per 100 gm, respectively. The study revealed some indigenous rice germplasm of Assam, India which are significant considering phenolic compounds and mineral content.

Purpose: To evaluate the antioxidant and antifungal activities of polyphenol-rich extracts of the dried fruit pulp of Garcinia pedunculata (GP) and Garcinia morella (GM) to determine their traditional claims of LPO (IC50= 42 ± 0.01 and 30.36 ± 0.03 μg/mL)

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Background: Assam is a rich source of different types of colored rice cultivars. Very few colored rice cultivars are studied regarding nutritional and phytochemical properties. The objective of present study was to assess the nutritional composition and antioxidant properties of traditional red rice cultivars of Assam. Methods: Ten different red rice cultivars were collected for the study. The unpolished rice grains were analysed for proximate composition, mineral content, total phenolic, flavonoid content and DPPH free radical scavenging activity. Result: Amylose content was found to be low in the red rice cultivars. The carbohydrate and crude protein content varied significantly among the red rice cultivars. The studied cultivars were found to be good source of Fe, Mn and Zn. Highest total phenolic (1357.22 mg /100 g) and flavonoid content (896.37 mg/100 g) were found in the Hal aus, whereas the lowest value for total phenolic (336.49 mg/100 g) and flavonoid content (127.51 mg/100 g) were observed in Basanta bahar. Antioxidant capacity of colored rice varieties ranged from 33.33 to 84.24% for DPPH radical scavenging activity. The red rice cultivars contain a significant amount of nutrients and antioxidants including phenolic and flavonoids.

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