广西八角中二氧化硫检测及污染情况分析  

Detection and pollution analysis of sulfur dioxide in star anise in Guangxi

作　　者：郑娟梅 农毅清 兰斌 陈宁周 陆石英 刘星 韦春梦 ZHENG Juan-mei;NONG Yi-qing;LAN Bin;CHEN Ning-zhou;LU Shi-ying;LIU Xing;WEI Chun-meng(Guangxi-ASEAN Food Inspection Center,Nanning 530022,China)

机构地区：[1]广西-东盟食品检验检测中心,南宁530022

出　　处：《湖北农业科学》2022年第3期148-151,共4页Hubei Agricultural Sciences

摘　　要：针对广西南宁高峰市场充斥硫磺八角(Illicium verum Hook.f.)、二氧化硫超标问题,检测广西壮族自治区销售的239批八角中的二氧化硫残留量,以了解目前市面上销售的八角中二氧化硫污染情况。将八角以蒸馏法进行处理,样品中的亚硫酸盐系列物质加酸处理后转化为二氧化硫,以过氧化氢接收,将其氧化为硫酸根离子,采用酸碱滴定法测定,计算八角中二氧化硫的含量。结果表明,对应二氧化硫的量为0.152、0.305、0.609 g/kg添加水平的回收率在52.7%~91.7%,相对标准偏差在3.0%~7.4%。应用改进后的方法对广西南宁及其周边地区销售的239批八角进行二氧化硫污染检测分析,其中检出二氧化硫含量在0.150 g/kg的标准限量以上为24批次,最高的0.839 g/kg,最低的0.173 g/kg。广西八角中二氧化硫残留量总体污染水平不高,但个别超标现象仍存在。In view of the problem that the peak market in Nanning,Guangxi was full of sulfur star anise and the sulfur dioxide exceeded the standard,the sulfur dioxide residue in 239 batches of star anise sold in Guangxi Zhuang Autonomous Region was detected to understand the sulfur dioxide pollution in the star anise sold on the market.The star anise was processed by distillation,the sulfite series substances in the sample were converted into sulfur dioxide after acid treatment,received with hydrogen peroxide,oxidized into sulfate ions,determined by acid-base titration,and the content of sulfur dioxide in star anise was calculated.The results showed that the recoveries of sulfur dioxide at the addition levels of 0.152,0.305,and 0.609 g/kg were 52.7%~91.7%,and the relative standard deviation was 3.0%~7.4%.The improved method was applied to detect and analyze the sulfur dioxide pollution of 239 batches of star anise sold in Nanning and its surrounding areas,Guangxi.Among them,the detected sulfur dioxide content above the standard limit of 0.150 g/kg was 24 batches,the highest was 0.839 g/kg and the lowest was 0.173 g/kg.The overall pollution level of sulfur dioxide residues in star anise in Guangxi was not high,but individual excesses still existed.

关 键 词：八角(Illicium verum Hook.f.) 二氧化硫 全自动二氧化硫测定仪 污染 广西壮族自治区 

分 类 号：TS207.5[轻工技术与工程—食品科学]