Response surface methodology (RSM) was used for the optimization of antioxidant capacity in gardenia extracts. Theantioxidant capacities of gardenia fruit extracts were investigated by ferric reducing ability (FRA) and 2,2-diphenyl-1-picryl-hydrazyl (DPPH) free radical scavenging activity (RSA) assays. The optimum extraction parameters for the strongest antioxidantcapacity were the ethanol concentration (EtOH) of 48.9%, extraction temperature of 72.9oC, and extraction time of 29.9 min.Analysis of variance (ANOVA) showed that the quadratics of EtOH and extraction temperature had highly significant effect onthe antioxidant capacity (p<0.001). The antioxidant capacity was correlated with contents of bioactive components [crocin,geniposide, and total phenolic (TP) compounds] in gardenia extracts and mainly attributed to the content of the TP compounds.
목차
Abstract Introduction Materials and Methods Results and Discussion References
키워드
extraction optimizationantioxidant capacityresponse surface methodology (RSM)gardenia fruit extract
저자
Bin Yang [ College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 10083, PR China ]
Xuan Liu [ College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 10083, PR China ]
Dike Teng [ College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 10083, PR China ]
Yanxiang Gao [ College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 10083, PR China ]
Corresponding author