橄榄油总迁移量测试行业标准中问题探讨

Discussion on the problems in the industry standards for olive oil overall migration test

中文关键词:  橄榄油总迁移量  适宜性判定  橄榄油质量  橄榄油水分干燥

英文关键词:overall migration into olive oil  suitability determination  quality of olive oil  water drying of olive oil

中文摘要:

      目的 针对橄榄油总迁移量测试参考的行业标准中的几个问题, 讨论并提出相关改进建议, 以提高测试的可操作性和结果的准确性。方法 采用控制变量法, 考察适宜性判定时不同橄榄油质量对试样中橄榄油干扰物定量结果的影响, 考察不同温度和时间对橄榄油中水分干燥程度的影响。结果 以45~55 mg橄榄油做单点标准曲线定量适宜性判定限量附近的试样时, 检测结果准确性欠佳, 由10.3、7.0、2.8 mg橄榄油做单点标准曲线定量试样中橄榄油干扰物的质量基本一致; 行业标准中橄榄油中水分的干燥条件要求高、操作困难, 较难实现。结论 适宜性判定时宜采用小于10 mg的橄榄油做单点标准曲线, 以此来定量试样中橄榄油干扰物的质量, 对于水分敏感性试样尽量避免采用干燥橄榄油的方法, 建议采用调理法确定试样的准确质量, 以提高橄榄油总迁移量测试结果的准确性。

英文摘要:

      Objective To address several issues in the industry standards referenced for the total migration of olive oil, discuss and propose relevant improvements to improve the operability of the test and the accuracy of the results. Methods The control variable method was used to investigate the effect of different olive oil quality on the quantitative results of olive oil interference in the sample. The effects of different temperature and time on the dryness of olive oil were investigated. Results When 45 mg to 55 mg of olive oil were used as a single point standard curve for quantitative suitability to determine the sample near the limit, the accuracy of the test results was not good. The quality of olive oil interferents in the quantitative samples with single point standard curve made by 10.3 mg, 7.0 mg and 2.8 mg olive oil was basically consistent. In the industry standards, the moisture in the olive oil requires high drying conditions and is difficult to operate, and more difficult to achieve. Conclusions For the determination of suitability, olive oil of less than 10 mg should be used as a single point standard curve to quantify the quality of the olive oil interferents in the sample. For moisture sensitive samples, the method of drying olive oil shall be avoided as far as possible. It is suggested to use conditioning method to determine the accurate quality of samples, so as to improve the accuracy of the test results of the total migration of olive oil.