Antioxidant activities of B. campestris var. chinensis and B. juncea L. Czern var. Laciniata Makino baby leaf extracts

The purpose of this study was to investigate antioxidant activities of B. campestris var. chinensis and B. juncea L. Czern var. Laciniata Makino baby leaf extract. We studied DPPH radical scavenging activity, ABTS radical scavenging activity, ferric ion reducing antioxidant power (FRAP), total phenol contents, the total chlorophylls contents, total carotenoid contents and oxygen radical absorbance capacity (ORAC). Our results showed that antioxidant activities (DPPH radical scavenging activity, ABTS radical scavenging activity, FRAP) of the B. campestris var. chinensis baby leaf extract were significantly increased in a dose-dependent manner. Also, these baby leaf extracts had the highest total chlorophyll and carotenoid contents (9.26±0.09 μg/mL and 1.62±0.01 μg/mL). However, B. juncea L. Czern var. Laciniata Makino baby leaf extract showed higher in total phenol content (15.92±0.29 mg GAE/g) and ORAC value (987.18 μM TE/g) than those (14.66±0.11 mg GAE/g and 928.39 μM TE/g) of B. campestris var. chinensis baby leaf extract. Our study provide a basic data for the development of functional foods using two kinds of sprouts by analyzing the antioxidant and physiological activities of these extracts. These results suggest that functional foods can be developed using two kinds of baby leaf.