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Extraction of parishin B and parishin C from Gastrodiae Rhizoma by subcritical water technology
Guozhen Wu,Hongjing Dong,Jia Li,Lanping Guo,Yan Cheng,Yanling Geng,Xiao Wang 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.108 No.-
Subcritical water extraction (SWE) was used to extract bioactive parishin B (PB) and parishin C (PC) fromGastrodiae Rhizoma. Extraction conditions were optimized by Box-Behnken design (BBD) of responsesurface methodology (RSM). The highest yield of PB was 7.46 ± 0.18 mg/g when the solid/liquid ratio(SLR) was 4.5 mg/mL at an extraction temperature of 118 C and extraction time of 50 min, and the highestyield of PC was 5.27 ± 0.07 mg/g when the SLR was 22 mg/mL at an extraction temperature of 145 Cand extraction time of 23 min. Compared with heating reflux extraction the yield of PB was about 1.3times higher, and that of PC about 2.6 times higher; Compared with ultrasound assisted extraction theyield of PB was about 3 times higher, and that of PC about 6 times higher. Degradation of parishin Aby SWE showed that the increasing mechanism of PB and PC mainly attributed to the conversion of PAinto PB and PC. This study suggests that SWE was an efficient and green way to extract natural productswith greater values.
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