期刊
JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE
卷 52, 期 3, 页码 1414-1423出版社
SPRINGER INDIA
DOI: 10.1007/s13197-013-1152-2
关键词
Indian beers; Phenolic content; Flavonoids; Antioxidant potential; Rutin; HPLC; LC-MS
Chemical composition, antioxidant potential and corresponding lipid preoxidation of Indian commercial beers were evaluated. The presence of polyphenolic compounds such as tannic acid, gallic acid, catechol, vanillin, caffeic acid, quercetin, p-coumaric acid and rutin was quantified using LC-MS while the organic acids including tartaric, malic, acetic, citric and succinic acids were analysed using HPLC. Beer sample B8 had the greatest concentration of phenolic and flavonoid components (0.620 +/- 0.084 mg/mL and 0.379 +/- 0.020 mg/mL respectively) among the beer samples studied. The DPPH radical scavenging activity was observed in the range of 68.34 +/- 0.85 % to 89.90 +/- 0.71 % and ABTS radical cation scavenging activity was in the range of 59.75 +/- 0.20 % to 76.22 +/- 0.50 %. Percent protection in lipid peroxidation was quantified to be maximum (54.45 +/- 3.39 %) in sample B5. Total phenolic content positively correlates with antioxidant assays, DPPH and ABTS (r = 0.35 and r = 0.58 respectively) with p < 0.001 and also with lipid peroxidation (r = 0.04) with p < 0.001. Negative correlation was observed between total flavonoid content with ABTS and lipid peroxidation (r = -0.1 and r = -0.05) respectively. The process of brewing warrants additional research to determine how the concentration of selected phenolic compounds can be increased.
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