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Chemistry and Industry of Forest Products ›› 2019, Vol. 39 ›› Issue (6): 115-122.doi: 10.3969/j.issn.0253-2417.2019.06.016

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Extraction Technology of Total Alkaloids from Taxus chinensis Branches and Leaves and Their Antitumor Activities

Ping JIANG(),Yajie ZHAO,Xinye BAO,Fei WANG,Zhanquan DUAN,Maolin WANG   

  1. College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
  • Received:2019-08-06 Online:2019-12-28 Published:2019-12-21
  • Supported by:
    国家重点研发计划资助项目(2017YFD0601306);江苏高校品牌专业建设工程项目(PPZY2015C221“林产化工”)

Abstract:

The optimum extraction conditions of total alkaloids from Taxus chinensis branches and leaves(TCBL)through enzymolysis treatment and ultrasonic-assisted extraction method were investigated by the single factor experiment and response surface experiment. Then, in vitro antitumor activities of crude total alkaloids extract were studied. The results showed that the optimum process conditions of enzyme and ultrasonic-assisted extraction are ethanol volume fraction of 19%, enzyme solution pH value 3.0, enzyme concentration of 0.10 g/L, liquid-solid ratio 12:1(mL:g), enzymolysis time 52 min, enzymolysis temperature 50℃, ultrasonic power 150 W.The yield of total alkaloid of extracting 1 time was 0.126% under these conditions. Response surface model significance test found that the model P < 0.000 1, which indicated that the difference was very significant, regression equation was effective, and the model had statistical significance.The in vitro antitumor activity of crude total alkaloids extracted from TCBL was studied. The results showed that total alkaloids extract from TCBL had good inhibitory effects on three kinds of cancer cells. Especially, the antitumor activity against human cervical cancer (Hela) cells was the strongest, and its IC50 value was 22.18 mg/L that was similar to that of etoposide (21.2 mg/L). It had better antitumor effect on human breast cancer (MCF7) cells (IC50 74.95 mg/L). It had a certain inhibitory activity on human hepatocellular carcinoma (HepG2) cells, and its IC50 value was 146.03 mg/L.

Key words: Taxus chinensis branches and leaves, total alkaloids, extraction technology, antitumor activity

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