中国食品添加剂Issue(3)：152-156,5.
干制红枣中天然苯甲酸的测定及本底分析
The determination of natural benzoic acid in dried red dates and background analysis
摘要
Abstract
Using high performance liquid chromatography and diode array detector,a detection method was developed for the qualitative and quantitative determination of benzoic acid in red jujube,which can analytically determine the range distribution of benzoic acid content in red jujube.After extracted by aqueous solution,a natural component (benzoic acid) was isolated from red jujube by HPLC.After treatment,the sample showed same retention time and ultraviolet absorption spectrum using three different C 18 chromatogram columns under same chromatographic conditions,which approved the existence of natural benzoic acid in red jujube.This method showed a good linear relationship in the range of 1.0 ～ 100.0mg/L with R=0.999,the limit of quantity (LOQ) was 0.010g/kg,recovery rates were all greater than 85％ at addition levels of 0.010 g/kg,0.050 g/kg and 0.100g/kg respectively.This method could provide reference for the qualitative and quantitative determination of chemical composition in other natural organic acids.This article also initially determined the scope of background values of natural benzoic acid of 122 batches of dried jujube samples from the three main producing regions,which provided important evidence for establishing and amending related standards in food industry.关键词
红枣/苯甲酸/高效液相色谱/本底值Key words
red jujube/benzoic acid/high performance liquid chromatography/the background value分类
轻工纺织引用本文复制引用
苏敏,巩志国,宋姣,伍新宇..干制红枣中天然苯甲酸的测定及本底分析[J].中国食品添加剂,2017,(3):152-156,5.基金项目
国家质量监督检验检疫总局科技计划项目(2015IK288). （2015IK288）
