The Effect of Extraction Methods on Phenolic, Anthocyanin, and Antioxidant Activities of Riceberry Bran
Keywords:Accelerated solvent extraction, Maceration, Riceberry bran, Soxhlet, Ultrasonic-assisted extraction
Riceberry bran, byproduct from the rice milling process, is one of bioactive compounds sources. In order to increase Riceberry bran value, the purpose of this study was to compare the effect of different Riceberry bran extraction methods, including accelerated solvent extraction (ASE), ultrasonic-assisted extraction (UAE), soxhlet extraction (SE), and maceration method (MC) on bioactive compounds and antioxidant activities. It was found that the Riceberry bran extract from ASE presented the highest total phenolic, total anthocyanin content (55.45 mg GAE/g and 3.06 mg/g) and antioxidant properties including IC50 of DPPH assay (0.109 mg/mL),
FRAP value (688.04 mmole Fe(II)/kg) and IC50 of ABTS assay (3.42 mg/mL) among the four methods. These results imply the potential to use the ASE method for extraction of phenolic and anthocyanin compounds from Riceberry bran.
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