Page 119 - 《精细化工》2021年第5期
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第 38 卷第 5 期 精 细 化 工 Vol.38, No.5
202 1 年 5 月 FINE CHEMICALS May 2021
中药现代化技术
金柑结合多酚的制备及其对 RAW 264.7
巨噬细胞免疫调节活性
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朱雅雯 ,王 洋 ,肖 航 ,郭时印 ,范 伟 ,唐忠海
(1. 湖南农业大学 食品科学技术学院,湖南 长沙 410128;2. 麻省大学阿莫斯特分校 食品科学系,
马萨诸塞州 阿莫斯特 01003)
摘要:以萃取游离多酚后的金柑果渣为材料,采用高压脉冲电场(PEF)进行处理,提取其中的结合多酚(NEPP)。
在单因素(场强、脉冲数和液料比)实验基础上,以金柑 NEPP 含量为响应值,通过响应面法对金柑 NEPP 提
取条件进行优化;之后应用 RAW 264.7 巨噬细胞模型,分别采用 MTT 法、中性红比色法以及 Griess 法,测定
金柑 NEPP 处理后的 RAW 264.7 细胞生长情况、吞噬活性和释放 NO 能力,以评价其免疫活性。结果表明,金
柑 NEPP 的提取工艺回归模型显著,拟合性良好,并预测金柑 NEPP 含量为 1.6728 mg GAE/g DW(即每克金柑
干重所含有的没食子酸当量);优化后的 PEF 提取条件为:脉冲数 250 次,场强 11.8 kV/cm,液料比 0.34∶1(L∶
g)。在优化条件下,金柑 NEPP 含量(1.6382 mg GAE/g DW)接近预测值,表明优化后的 PEF 法提取工艺可用
于金柑 NEPP 的提取。当金柑 NEPP 质量浓度为 100 mg/L 时,对 RAW 264.7 巨噬细胞无毒性作用,可以显著地
抑制巨噬细胞 NO 的分泌水平,并提高其吞噬活性。
关键词:金柑;结合多酚;响应面法;RAW 264.7 巨噬细胞;免疫调节活性;中药现代化技术
中图分类号:TS201.1 文献标识码:A 文章编号:1003-5214 (2021) 05-0973-08
Preparation of non-extractable polyphenols from Kumquat and its
immunomodulatory effect in RAW 264.7 macrophage cells
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ZHU Yawen , WANG Yang , XIAO Hang , GUO Shiyin , FAN Wei , TANG Zhonghai
(1. College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, Hunan, China;
2. Department of Food Science, University of Massachusetts, Amherst 01003, MA, USA)
Abstract: Non-extractable polyphenol (NEPP) was extracted from the pomace of post-citrus polyphenols
by high intensity pulsed electric field (PEF). On the basis of single-factor experiments (field intensity, pulse
number and liquid-solid ratio), the extraction condition of NEPP in Kumquat was optimized by response
surface method using NEPP content as response value. MTT assay, neutral red colorimetric assay, and
Griess assay were used to test the growth, phagocytic activity, and NO release of RAW 264.7 macrophage
cells after NEPP treatment to evaluate the immunomodulatory effect of NEPP. The results showed that the
obtained regression model for the extraction process of Kumquat NEPP was significant with good fitting,
which predicted the content of Kumquat NEPP was 1.6728 mg GAE/g DW(gallic acid equivalent per gram
in dry weight of Kumquat). The optimized extraction conditions for Kumquat NEPP by PEF were obtained
as follows: pulse number of 250, field intensity of 11.8 kV/cm, liquid-solid ratio of 0.34∶1(L∶g). Under
the optimized conditions, the Kumquat NEPP content (1.6382 mg GAE/g DW) was close to the predicted
value, indicating that the optimized PEF process was acceptable to the extraction of Kumquat NEPP.
收稿日期:2020-10-19; 定用日期:2020-12-14; DOI: 10.13550/j.jxhg.20200956
基金项目:国家自然科学基金项目(31671858);湖南省自然科学基金项目(2019JJ40114);湖南省教育厅重点项目(18A108);长沙
市重点研发计划项目(kq1801016)
作者简介:朱雅雯(1995—),女,硕士生,E-mail:1057033424@qq.com。联系人:唐忠海(1979—),男,博士,教授, E-mail:
tangzhonghai@hunau.edu.cn。