Effects of four new processing technologies on pesticide residues and saponins content in ginseng

摘要

Pesticide residue and saponin content are two important factors affecting the quality of ginseng products. In this paper, the effects of four new drying processing technologies on pesticide residues and saponins in ginseng were studied. The change in pesticide residue was determined by GC and the content of ginsenoside was determined by HPLC. After the microwave treatment for 32 min, the degradation rate of pesticide residues was best. The degradation rates of fluazinam, BHC, PCNB, chlorpyrifos, and DDT were 58.51%, 51.39%, 58.26%, 16.54%, and 18.14%, respectively (p ＜ 0.05). There were differences in the content of 20 ginsenoside monomers. The content of ginsenoside was highest after the microwave treatment for 32 min and the sum of 20 ginsenoside monomers was 3.00%. Drying processing had certain effects on remove pesticide residues and convert saponins of ginseng.