两广地区不同季度米粉制品中脱氢乙酸含量分析

朱丽; 张宏峰; 蒋潮; 罗晓燕; 彭荣飞; 潘心红; 谭微

doi:10.13421/j.cnki.hjwsxzz.2023.06.012

两广地区不同季度米粉制品中脱氢乙酸含量分析

Content analysis of dehydroacetic acid in rice flour products in different quarters from Guangdong and Guangxi

摘要

摘要:
目的了解两广地区同季度米粉制品中脱氢乙酸含量, 并初步评价其暴露水平。
方法 2022年采集两广地区的230批次米粉制品, 应用建立的米粉制品中脱氢乙酸含量的高效液相色谱方法测定其中脱氢乙酸含量, 并初步进行人群暴露量评估。
结果 2022年一至四季度湿米粉中脱氢乙酸含量分别为0.216、0.261、0.424和0.361 g/kg, 平均含量为0.322 g/kg; 不同季度干米粉中脱氢乙酸含量差异不大, 其均值为0.016 g/kg; 湿米粉中脱氢乙酸含量明显高于干米粉, 干米粉、湿米粉和米粉干制品中脱氢乙酸检出率分别为38.8%、54.0%和44.3%。两广居民从米粉制品中摄入的脱氢乙酸日暴露量为20.5 mg/d。
结论两广地区干米粉的脱氢乙酸含量均较低, 湿米粉中的脱氢乙酸含量明显高于干米粉。

Abstract:
Objective To understand the content of dehydroacetic acid in rice flour products in different quarters and preliminarily evaluate its exposure.
Methods A high-performance liquid chromatography (HPLC) method was developed for the determination of dehydroacetic acid content in rice flour products in Guangdong and Guangxi, China. The content of dehydroacetic acid in 230 batches of rice flour product samples from Guangdong and Guangxi was determined and compared.
Results The content of dehydroacetic acid in wet rice noodles was significantly higher than that in dry rice noodles. There was no significant difference in the content of dehydroacetic acid in dry rice noodles across different quarters, with a mean dehydroacetic acid content of 0.016 g/kg. The content of dehydroacetic acid in wet rice noodles varied significantly across different quarters, being 0.216, 0.261, 0.424, and 0.361 g/kg, respectively, with a mean level of 0.322 g/kg. In the dry rice noodle samples, wet rice noodle samples, and dried rice flour product samples, 38.8%, 54.0%, and 44.3% had the content of dehydroacetic acid exceeding the limit, respectively. The daily exposure to dehydroacetic acid ingested from rice flour products was 20.54 mg/d among the residents in Guangdong and Guangxi.
Conclusion The content of dehydroacetic acid in dry rice noodles is low in both Guangdong and Guangxi and the content of dehydroacetic acid in wet rice noodles is significantly higher than that in dry rice noodles.

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