| 杜宇，张文斌，杨瑞金，等.乙醇水提法提取葡萄籽油及其品质分析[J].中国油脂,2019,44(5):.[DU Yu，ZHANG Wenbin，YANG Ruijin，etc.Extraction of grape seed oil by aqueous ethanol method and its quality[J].China Oils and Fats,2019,44(5):.] |
| 乙醇水提法提取葡萄籽油及其品质分析 |
| Extraction of grape seed oil by aqueous ethanol method and its quality |
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| DOI： |
| 中文关键词: 葡萄籽油 乙醇水提法 品质分析 |
| 英文关键词:grape seed oil aqueous ethanol method quality analysis |
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| 摘要点击次数: 1631 |
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| 中文摘要: |
| 为解决传统水酶法提取葡萄籽油前处理复杂、耗水量大、耗酶量大及提取时间长等问题，采用乙醇水提法提取葡萄籽油。结果表明，葡萄籽原料无需预处理，可经粉碎后直接进行油脂提取。通过对影响乙醇水提法提取葡萄籽油的因素研究，确定较优的提取条件为：乙醇体积分数45%，料液比1∶?3，提取温度60?℃，pH 9，提取时间1 h，收集清油后在提取温度60?℃、pH 9条件下水相重复提取渣相1 h。在优化条件下，葡萄籽油提取率为86.57%。所得葡萄籽清油经简单精炼，各项指标达到一级葡萄籽油国家标准，油中γ-生育酚、甾醇、总酚含量分别达到52.70、2 120.23、195.5 mg/kg，且反式脂肪酸含量为0.763 g/kg。乙醇水提法工艺中，原料无需前处理，无需酶制剂辅助，提取时间由水酶法的3 h以上缩短至2 h，耗水量由6 t/t(以葡萄籽质量计)以上降至3 t/t(以葡萄籽质量计)，其水相可循环、油品质较高，为葡萄籽油高效提取提供一种新思路。 |
| 英文摘要: |
| In order to solve the problems of traditional aqueous enzymatic extraction of grape seed oil, such as complex pretreatment, large amounts of enzyme and water consumption and long extraction time, grape seed oil was extracted by aqueous ethanol method. The results showed that grape seed could be directly used to extract oil after pulverization without pretreatment. By studying the factors affecting the extraction of grape seed oil by aqueous ethanol, the optimal extraction conditions were determined as follows: volume fraction of ethanol 45%, solid-liquid ratio 1∶?3, extraction temperature 60?℃, pH 9, extraction time 1 h, and residue was further extracted by aqueous phase under the same conditions. Under the optimal conditions, the extraction rate of the free oil reached 86.57%. The obtained grape seed oil was simply refined, and the indexes reached the national standard of first-grade grape seed oil. The contents of γ-tocopherols, sterols and total phenols reached 52.70, 2 120.23, 195.5 mg/kg, respectively, and the trans fatty acid content was 0.763 g/kg. Compared with traditional aqueous enzymatic extraction, the raw materials in aqueous ethanol method need no pretreatment nor enzyme, and the extraction time shortened from above 3 h to 2 h, and the water consumption decreased from 6 t/t（based on the mass of grape seed） to 3 t/t（based on the mass of grape seed）. The water phase could be recycled and the quality of the oil was high, which provided a new idea for the efficient extraction of grape seed oil. |
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