特级初榨橄榄油基本质量指标及要求

Basic quality indicators and requirements of extra virgin olive oil

中文关键词:  特级初榨橄榄油  油橄榄果渣油  国际橄榄理事会  酸价  过氧化值  紫外吸光度  消光系数变异值  吸光系数变异值

英文关键词:extra virgin olive oil  olive pomaceoil  International Olive Council  free acidity  peroxide value  ultraviolet absorbance  extinction coefficient variation value  absorption coefficient variation value

中文摘要:

      目的 介绍2022年5月1日起实施的GB/T 23347—2021《橄榄油、油橄榄果渣油》, 对当前市售进口特级初榨橄榄油质量情况进行评估。方法 采购20种市售标称意大利、希腊、西班牙等国进口的特级初榨橄榄油, 检验酸价、过氧化值、消光系数变异值、水分及挥发物和不溶性杂质5个基础项目, 对所得数据进行分析。通过与国际橄榄理事会标准的对比, 讨论限量及测定方法等方面的细微差异, 并说明这些项目对于橄榄油质量评估的现实意义。结果 所测样品的酸价、过氧化值、不溶性杂质3个项目均符合我国标准对该产品等级的限量要求。对比GB/T 23347—2021和国际橄榄理事会贸易标准, 发现对于优质初榨橄榄油的酸价限量, 国内标准比国外标准更为严格, 橄榄油进口贸易需要注意这一差异。结论 2021年新颁布的GB/T 23347—2021在质量要求上有所提高, 消费者购买橄榄油时应优先选择“特级初榨橄榄油”。橄榄油质量初步评估需要加快时间和减少成本, 检验以上5个项目为最低要求。

英文摘要:

      Objective To introduce the coming in GB/T 23347—2021 Olive oil and olive pomace oil, implemented from May 1, 2022, and evaluate the quality of imported extra virgin olive oil. Methods Twenty kinds of extra virgin olive oils imported from Italy, Greece and Spain were purchased, 5 basic items such as acid value, peroxide value, variation value of extinction coefficient, moisture, volatile matter and insoluble impurities were tested, and the data were analyzed. By comparing with the standards of the International Olive Council, the subtle differences in limits and determination methods were discussed, and the practical significance of these items for the quality evaluation of olive oil was explained. Results The 3 items of acid value, peroxide value and insoluble impurities met the limit requirements of Chinese standards for the product grade. Comparing GB/T 23347—2021 with the International Olive Council trade standard, it was found that the domestic standard was more stringent than the foreign standard for the acid value limit of virgin olive oil, and this difference should be paid attention to in the import trade of olive oil. Conclusion The new olive oil standard GB/T 23347—2021 issued in 2021 has improved the quality requirements. Consumers should give priority to “extra virgin olive oil” when purchasing olive oil. The preliminary evaluation of olive oil quality needs to speed up the time and reduce the cost, the above 5 items are the minimum requirements.