分析与检测

柱前衍生-超高效液相色谱测定不同品种桑枝中的17种氨基酸的含量

  • 张椿翊 ,
  • 黄小兰 ,
  • 黄文平 ,
  • 李金金 ,
  • 王森 ,
  • 张晓渊 ,
  • 周浓
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  • 1(重庆三峡学院 生物与食品工程学院,重庆,404120)
    2(重庆市万州食品药品检验所,重庆,404120)
    3(遵义医科大学 药学院,贵州 遵义,563000)
    4(重庆三峡学院 教师教育学院,重庆,404120)
硕士研究生(张晓渊助教和周浓教授为共同通信作者,E-mail:1504464429@qq.com;erhaizn@126.com)

收稿日期: 2022-04-27

  修回日期: 2022-05-23

  网络出版日期: 2022-09-16

基金资助

重庆市教育委员会科学技术研究项目(KJQN201801210)

Determination of 17 amino acids in different varieties of mulberry branches by ultra-high performance liquid chromatography with precolumn derivatization

  • ZHANG Chunyi ,
  • HUANG Xiaolan ,
  • HUANG Wenping ,
  • LI Jinjin ,
  • WANG Sen ,
  • ZHANG Xiaoyuan ,
  • ZHOU Nong
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  • 1(College of Biology and Food Engineering, Chongqing Three Gorges University, Chongqing 404120, China)
    2(Chongqing Wanzhou FDA Inspection Institute, Chongqing 404120, China)
    3(School of Pharmacy, Zunyi Medical University, Zunyi 563000, China)
    4(College of Teacher Education, Chongqing Three Gorges University, Chongqing 404120, China)

Received date: 2022-04-27

  Revised date: 2022-05-23

  Online published: 2022-09-16

摘要

为研究桑枝氨基酸含量情况,采用酸水解、异硫氰酸苯酯柱前衍生、超高效液相色谱仪法对采自重庆不同区县的9个采样点、3个品种共18批次桑枝中的17种氨基酸含量进行测定。结果表明,17种氨基酸在各自质量浓度范围内,峰面积和浓度呈现良好的线性关系,相关系数r为0.997 9~0.999 9。18批次桑枝样品中均检出17种氨基酸,桑枝中氨基酸总量为41.09~111.70 mg/g,平均含量为64.48 mg/g;必需氨基酸的总含量为16.88~35.45 mg/g,平均含量为23.53 mg/g;药用氨基酸总量为22.98~59.99 mg/g,平均含量为35.58 mg/g。不同品种桑枝在氨基酸种类上基本无差异,但含量差异较大,其中含量最高的脯氨酸和谷氨酸平均含量为10.49 mg/g和6.37 mg/g,分别占氨基酸总量的16.27%和9.88%。结果表明桑枝中氨基酸种类丰富,含量较高。该研究可为深入研究桑枝的药用价值提供基础资料。

本文引用格式

张椿翊 , 黄小兰 , 黄文平 , 李金金 , 王森 , 张晓渊 , 周浓 . 柱前衍生-超高效液相色谱测定不同品种桑枝中的17种氨基酸的含量[J]. 食品与发酵工业, 2022 , 48(16) : 283 -277 . DOI: 10.13995/j.cnki.11-1802/ts.032147

Abstract

In this study, acid hydrolysis, phenyl isothiocyanate pre-column derivatization and ultra-high performance liquid chromatography were used to explore the content of amino acids in mulberry branches. UPLC method was used to determine the content of 17 amino acids in 18 batches, 3 varieties of mulberry branches collected from 9 sampling points in Chongqing. The results showed that there was a good linear relationship between the peak area and concentration of 17 amino acids in the range of respective mass concentrations with a correlation coefficient r 0.997 9-0.999 9. The total amount of amino acids in mulberry branches was 41.09-111.70 mg/g, on the average of 64.48 mg/g; the total content of essential amino acids ranges from 16.88 mg/g to 35.45 mg/g, on the average of 23.53 mg/g. Moreover, the total content of medicinal amino acids ranged from 22.98 mg/g to 59.99 mg/g, on the average of 35.58 mg/g. There was no difference in amino acids types among different varieties of mulberry branches, but the content of amino acids varied greatly. The average content of proline and glutamate with the highest two were 10.49 mg/g and 6.37 mg/g, which accounting for 16.27% and 9.88% of the total amino acids, respectively. The results showed that the type of amino acids in mulberry branches were abundant and with relatively high concentration. This study could provide basic data for further explore the medicinal value of mulberry branches.

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