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    On the basis of the previous work of the research group, the orthogonal design method was further used to optimize the processing technology for reducing toxicity of fried Tripterygium wilfordii in Lysimachia christinae Decoction. A total of 9 processed products of T.wilfordii in L.christinae decoction were prepared by four factors and three levels orthogonal design table. The contents of triptolide in T.wilfordii were determined by high performance liquid chromatography(HPLC) before and after processing: 4.27, 3.92, 3.57, 2.75, 2.42, 2.66, 3.51, 1.87, 1.75, 2.03 μg·g~(-1). On this basis, the above processed products were orally given to mice for 28 days. 12 hours after the last administration, food fasting except water was provided, and 24 hours later, the eyeballs were taken for blood and liver tissue. Serum biochemical indexes, liver lipid peroxidation and antioxidant related indexes were detected by kit method. Twenty-eight days after oral administration of raw T.wilfordii, the levels of serum alanine aminotransferase(AST), alanine aminotransferase(ALT), alkaline phosphatase(ALP) and liver malondialdehyde(MDA) in mice increased by 91%(P<0.01), 46%(P<0.05), 73%(P<0.01) and 99%(P<0.01), while the liver antioxidant indexes such as superoxide dismutase(SOD), glutathione(GSH), glutathione peroxidase(GPX) and glutathione-S transferase(GST) significantly decreased(P<0.01). After administration of the processed products, the above indexes were significantly reversed(P<0.01 or P<0.05). Especially, the processing conditions of A_3B_2C_1D_3 had the best detoxification effect on T.wilfordii, which decreased the high levels of AST, ALT, ALP and MDA by 49%(P<0.01), 32%(P<0.01), 42%(P<0.01), and 17%(P<0.05). Therefore, the best processing conditions for T.wilfordii in L.christinae decoction were A_3B_2C_1D_3, namely "15% mass fraction of L.christinae, 1 h moistening time, 160 ℃ frying temperature, and 9 min frying time".


    Yue-Chen Guan, Jun-Ming Wang, Ling-Ling Song, Xiao-Hui Wu, Chen Liu, Jie Xue. Processing technology for reducing toxicity of fried Tripterygium wilfordii in Lysimachia christinae decoction]. Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica. 2021 Mar;46(5):1128-1133

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    PMID: 33787106

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