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林产化学与工业 ›› 2014, Vol. 34 ›› Issue (5): 145-151.doi: 10.3969/j.issn.0253-2417.2014.05.024

• 研究报告 • 上一篇    下一篇

神秘果叶多酚的超声波提取工艺及其抗氧化能力

卢圣楼, 符家珍, 刘红, 符春敏, 林友明, 王晓贺   

  1. 海南师范大学 化学与化工学院, 海口市热带特色药食同源植物研究 与开发重点实验室, 海南 海口, 571127
  • 收稿日期:2013-03-12 修回日期:2014-06-18 出版日期:2014-10-25 发布日期:2015-08-18
  • 作者简介:卢圣楼(1987-),男,江苏南京人,硕士生,研究领域为精细有机合成与天然产物分离
  • 基金资助:
    国家自然科学基金资助项目(2166009);海口市应用技术研究与开发项目(2014-90);海南省省级创新训练项目(2013116580)

Ultrasonic Extraction and Antioxidant Activity of Polyphenol from Synsepalum dulcificum Leaf

LU Sheng-lou, FU Jia-zhen, LIU Hong, FU Chun-min, LIN You-ming, WANG Xiao-he   

  1. College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou Key Laboratory of Research and Development on Topical and Special Medicine and Edible Plant, Haikou 571127, China
  • Received:2013-03-12 Revised:2014-06-18 Online:2014-10-25 Published:2015-08-18
  • Contact: 刘红(1967-),女,山东诸城人,教授,博士,硕士生导师,研究领域为天然产物分离新技术;E-mail:lhyd123@sohu.com E-mail:lhyd123@sohu.com

摘要: 利用响应面法找出超声波提取神秘果叶多酚的最佳提取工艺,并考察其抗氧化性。在单因素试验的基础上,建立神秘果叶多酚的二次多项数学模型,1.0 g神秘果叶粉末,在液料比30:1(mL:g)条件下,所得到最优提取工艺条件为:丙酮体积分数58 %、超声波时间72 min、提取温度48 ℃,实测得率为6.84 %,与预测值(6.82 %)基本相符。神秘果叶多酚对ABTS、DPPH和·OH自由基的清除作用均呈现量效关系,半数抑制浓度(IC50)值分别为51.81、13.40和28.91 mg/L,表明神秘果叶多酚具有较强的抗氧化能力。

关键词: 神秘果叶, 多酚, 超声波提取, 抗氧化能力

Abstract: The purpose of this paper was to determine the optimum technology and conditions to extract polyphenol from the leaves of Synsepalum dulcificum. Based on the results of single factor experiments, by using the response surface method the S. dulcificum leaves polyphenols mathematical model was established. Meanwhile, the antioxidant activity of the extracted polyphenol was evaluated. The best technical conditions to extract polyphenol from S. dulcificum leaf were obtained as follows:the concentration of acetone solution 58%, ultrasonic time 72 min and extraction temperature 48 ℃, when the S.dulciticum leaf were 1.0 g and liquid-solid ratio was 30:1(mL:g). The predicted polyphenol extraction yield was 6.82%. Under the optimized condition, the experimental yield was 6.84 % which agreed with its predicted yield. The in vitro antioxidant assay results showed that S. dulcificum leaf polyphenol exhibited a dose-dependent scavenging activity against 2,2'-azinobis (3-ethyl- benzothiazoline-6-sulfonic acid ammonium salt(ABTS) radical, 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical and ·OH radical. Its hemi-inhibiting concentrations (IC50) were 51.81,13.40 and 28.91 mg/L, respectively. Which suggested that S. dulcificum leaf had high antioxidant activity.

Key words: Synsepalum dulcificum leaf, polyphenol, ultrasound extraction, antioxidant activity

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