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目的食用油是食物的重要组成部分,但目前对食用油中脂肪酸的成分了解较少。本研究利用中国7省和北京的市场调查数据,分析了食用油消费和其中的脂肪酸成分。方法食用油的消费数据来源于1997年中国健康与营养调查户的3天食物摄入。购买了8省主要城市销售的食用油,并于2001年进行了脂肪酸含量的分析,按照标签有14种油共126个样本。脂肪酸的分析运用标准的气相色谱法。结果中国有超过76%的家庭消费食用油,2岁及以上人群每人每日平均消费量为29.6g。有14的人食用菜籽油,菜籽油富含顺式C22∶1n9(芥酸)。33%的食用油与标签不符。菜籽油通过含C22∶1n9来识别,但标签上常常没有标。在另外28个样本中检测了反式亚麻酸异构体。南方和北方省份的标签偏差一样。结论中国应该制定混合食用油的完整标签规定,以预防影响健康的无意识脂肪酸消费。特别是应该减少芥酸和反式脂肪酸的消费。另外,还需要进一步对食用油标签进行控制管理,特别是南方省份。
The purpose of cooking oil is an important part of food, but currently less understanding of the composition of fatty acids in edible oil. In this study, the market survey data of 7 provinces in China and Beijing were used to analyze the consumption of edible oil and the fatty acid components in it. Method The consumption data of edible oil come from the three-day food intake of Chinese health and nutrition survey households in 1997. Buying edible oils sold in eight major cities and analyzing fatty acid content in 2001, there are 126 samples of 14 oils under the label. Fatty acid analysis using standard gas chromatography. As a result, more than 76% of households in China consumed cooking oil, and the average daily consumption per person for 2-year-olds and above was 29.6g. 14 people eat rapeseed oil, rapeseed oil is rich in cis C22: 1n9 (erucic acid). 33% of the cooking oil does not match the label. Rapeseed oil is recognized by the inclusion of C22: 1 n9, but there is often no label on the label. Trans-linolenic acid isoforms were detected in another 28 samples. Southern and northern provinces have the same label bias. Conclusion China should formulate a complete labeling requirement for mixed edible oils to prevent the consumption of unintended fatty acids that affect health. In particular, the consumption of erucic acid and trans-fatty acids should be reduced. In addition, the need for further control of edible oil labels, especially the southern provinces.