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Diphenyl-1-picrylhydrazyl (DPPH) radical scavenging ratio (%) of ‘Mato Peiyu’ leaf essential oils, citronellal, and citronellol. SD-EO, SFME-EO, citronellal, and citronellol were measured at a concentration of 0.500% (v/v). SD-CC and SFME-CC were measured at concentrations of 0.254% and 0.299% (v/v) according to the composition ratios in 0.500% (v/v) SD-EO and SFME-EO, respectively. Data are presented as the mean ± standard deviation based on triplicate determination.
