Abstract
This study was carried out to determine the phytochemical and antioxidant properties of two pigmented rice cultivars viz., Lingkang taker ame, Umling ame, and a non-pigmented rice Pungpo taker ame. Fourier transform infrared and high-performance liquid chromatography analysis of phenolic compounds were carried out for the rice cultivars. The highest level of total phenolic, anthocyanin, and scavenging activities were observed in Umling ame cultivar. Fourier transform infrared result of rice cultivars showed wide range of frequency (1131.60–3538.75 cm–1) which confirmed the presence of various phenolic compounds. Seven phenolic acids were detected in the rice cultivars. The highest value of salicylic acid (302.06 ± 0.01 mg/L), ferulic acid (17.21 ± 0.02 mg/L), apigenin (7.03 ± 0.01 mg/L), and gallic acid (0.98 ± 0.04 mg/L) were detected in Umling ame; whereas the highest value of quercetin (611.46 ± 0.01 mg/L) and caffeic acid (1.83 ± 0.01 mg/L) were found in Pungpo taker ame and Lingkang taker ame cultivars, respectively. Results revealed that the colored rice Umling ame showed higher phenolic content than other two rice cultivars Lingkang taker ame and Pungpo taker ame.
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