超声波辅助醇溶剂法提取橙皮苷及体外抑菌活性分析

2015-10-21 18:06:31张启焕严新许伟等
安徽农业科学 2015年31期

张启焕 严新 许伟等

摘要[目的]对柑橘皮中的橙皮苷提取工艺进行优化,并且分析其抗菌活性。[方法]采用单因素试验和正交试验,对利用超声波辅助乙醇溶液法提取柑橘皮中橙皮苷的工艺进行优化,并且采用平板法检测提取物对大肠杆菌和金黄色葡萄球菌的抑菌活性。[结果]获得的最佳工艺条件为:浓度 50%乙醇碱性溶液,pH 11,提取时间30 min,料液比1∶30(g/ml)。在此条件下,橙皮苷的提取率为2.76%。抑菌试验显示,橙皮苷在0.15%~0.50%的浓度下金黄色葡萄球菌和大肠杆菌均具有较好的抑菌效果。[结论]获得超声波辅助,氢氧化钠乙醇溶液法提取橙皮苷的最佳工艺,橙皮苷抑菌效果无种属特异性,具有广谱的抑菌活性。

关键词橙皮苷;提取工艺;抑菌

中图分类号S609.9文献标识码A文章编号0517-6611(2015)31-033-02

Study on Extraction of Hesperidin from Ponkan Peel and Analysis of Its Bacteriostatic Activity

ZHANG Qihuan1, YAN Xin2, XU Wei1, SHAO Rong1 et al

(1. School of Marine and Biological Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224051; 2. School of Chemical and Biological Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224051)

Abstract[Objective] To optimize the extracted technology of hesperidin from ponkan peel and analyze its bacteriostatic activity. [Method] The ultrasonicassisted ethanol extraction of hesperidin was optimized by orthogonal test and the bacteriostatic activity against E.coli and Staphylococcus aureus were investigated using plate method. [Result] The optimal ethanol concentration, pH, extraction time and ratio of material to extractant was 50%, 11, 30 min and 1∶30 (g/ml), respectively. The extraction ration was 2.76%. Bacteriostatic experiments showed that the hesperidin possess perfect bacteriostatic activity against E.coli and S.aureus at concentration of 0.15%-0.5%. [Conclusion] The optimal extraction technology of hesperidin was obtained form ponkan peel. Meanwhile, the bacteriostatic activity of hesperidin was broad and nonspecies related.

Key wordsHesperidin; Extraction technology; Bacteriostatic activity

橙皮苷(Hesperidin,Hsd),又名橙皮甙、陳皮甙,是一种广泛存在于柠檬、橘、柑和甜橙等的果肉和果皮中的一种天然黄酮类化合物,纯品为白色微小针状晶体,分子式C18H34O15,分子量610.57,熔点258~262 ℃,易溶于吡啶、稀碱溶液,微溶于甲醇和热冰醋酸,几乎不溶于乙醚、丙酮、苯和氯仿[1]。

橙皮苷具有抗炎、止痛[2]、免疫抑制[3]及抗癌[4]等活性,已被用于多种疾病的预防与治疗,在食品、医药等领域具有广阔的应用、开发前景[5-6],尤其是其抗癌活性已得到众多研究者的重视。研究表明,橙皮苷可以同时作用于多个细胞信号通路蛋白,如通过活化caspases,Bcl2(Bcell lymphoma 2)和Bax(Bcl2 assocaited X protein)诱导癌细胞凋亡,还可以通过调节COX2(cyclooxygenase2)、MMP2(matrix metalloproteinase2)和MMP9抑制肿瘤的血管生成、代谢[7]。

目前,橙皮苷的提取方法主要有溶剂提取法[8-9]、碱提酸沉法[10]、微波法[11]和超声波法[12]等。……

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