期刊论文

中文

武汉轻工大学学报

2095-7386

2019

38

5

12-18

10.3969/j.issn.2095-7386.2019.05.003

T201809:湖北省高等学校优秀中青年科技创新团队项目 2018J02:武汉轻工大学杰出项目

本校为第一机构

本文采用氯仿-异丙醇法对莲藕中的脂肪酸进行提取,并以NaOH-甲醇法对其进行甲酯化,最终通过气相色谱质谱联用技术对脂肪酸的组成及含量进行系统的分析比较,确定了不同采收期和低温贮藏(4℃)过程中脂肪酸含量的变化以及其对莲藕品质的影响。结果表明:莲藕随着采收时间的延长,脂肪酸含量总体会呈现逐渐减少趋势,“鄂莲五号”在采收期11月(包括11月)之前,其脂肪酸含量处于较高水平,品质处于较好的状态;在低温贮藏过程中,莲藕中不饱和脂肪酸含量显著增加,且低温抑制了饱和脂肪酸含量的增加。在低温贮藏第2周与第3周之间莲藕的感官变化较大,莲藕表皮开始出现发黏、出现霉点。因此,在9月-11月期间采收...

In this paper,the fatty acid in lotus root was extracted by chloroform-isopropanol method,and it was methylated by NaOH-methanol method. Finally,the composition and content of fatty acid were systematically analyzed by gas chromatography-mass spectrometry (GC-MS)and the changes in fatty acid content during different harvesting periods and low temperature storage (4 ℃) and their effects on quality of lotus roots were determined. The results showed that the fatty acid content of the lotus roots gradually decreased with the extension of harvest t...