摘要
按照GB/T 8314-2013测定茶叶中游离氨基酸总量时发现,按该方法制作的标准曲线线性关系较差,导致样品检测数据准确度不高,难以对所有含量不同的样品进行准确测定。同时,对于茶饮料中游离氨基酸总量的测定并没有指定的标准。为此,就该方法中的疑点进行分析与试验研究,并改进国标法中的标准曲线制作。通过曲线制作的改进,提高结果的准确性,扩大检测范围。
When determining the total amount of free amino acids in tea according to GB/T 8314-2013,it was found that the linear relationship of the standard curve made according to the method was poor,which resulted in the low accuracy of sample detection data and made it difficult to accurately determine all samples with different contents.At the same time,there is no standard for the determination of total free amino acids in tea beverages.The doubtful points in this method were analyzed and researched,and the standard curve making in the national standard method was improved.Through the improvement of curve making,the accuracy of the result was improved and the detection range was expanded.
作者
陈金华
王英姿
黄建安
刘仲华
CHEN Jinhua;WANG Yingzi;HUANG Jian’an;LIU Zhonghua(Key Lab of Tea Science of Ministry of Education,Hunan Agricultural University,Changsha 410128;National Research Center of Engineering&Technology for Utilization of Functional Ingredients from Botanicals,Hunan Agricultural University,Changsha 410128)
出处
《食品工业》
CAS
北大核心
2019年第10期191-195,共5页
The Food Industry
基金
国家重点研发计划子课题的任务“茶制品贮藏品质变化规律、控制技术及保质期研究”（编号：2017YFD0400804-3）
关键词
茶饮料
游离氨基酸总量
标准曲线
改进
tea beverage
total free amino acids
standard curve
improvement
