新鲜和干制龙眼果肉中多糖的理化特征及免疫调节活性比较(英文)

被引:10
作者
易阳 [1 ,2 ]
孙杰 [1 ]
王丽梅 [1 ,2 ]
张名位 [3 ]
机构
[1] 武汉轻工大学食品科学与工程学院
[2] 农产品加工湖北省协同创新中心
[3] 广东省农业科学院蚕业与农产品加工研究所
关键词
龙眼果肉; 多糖; 理化特征; 免疫调节活性; 干制;
D O I
10.13982/j.mfst.1673-9078.2015.10.010
中图分类号
TS255.1 [基础科学]; TS201.2 [食品化学];
学科分类号
083203 [农产品加工及贮藏工程]; 100403 [营养与食品卫生学];
摘要
龙眼是一种颇受欢迎的亚热带水果,其干制果肉作为传统中药材亦被人们所熟知,而多糖是主要的生物活性成分。基于多糖理化特征和免疫调节活性的分析评价,探析新鲜和干制龙眼果肉的营养性差异。通过气质联用、离子交换层析、凝胶过滤层析、粘度测定、紫外和红外光谱分析发现,新鲜果肉多糖(LPF)和干制果肉多糖(LPD)均为多糖-蛋白络合物,但两者的结合蛋白含量、中性与酸性多糖含量比、单糖组成、分子量分布和特征粘度均存在显著差异。体外细胞试验证实,LPD在50–400μg/m L剂量范围内对脾淋巴细胞增殖和巨噬细胞吞噬的增强作用明显强于LPF。LPD和LPF均能显著刺激Con A诱导的脾淋巴细胞增殖和巨噬细胞NO生成(P<0.05),但对LPS诱导的脾淋巴细胞增殖刺激作用较弱。龙眼果肉的干制处理可能通过改变水溶性多糖的理化特征而增强其体外免疫调节活性。
引用
收藏
页码:53 / 62
页数:10
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