| 高牡丹1，2，师景双1，2，胡明燕1，2.芝麻酱、花生酱酸值和过氧化值测定中的油脂提取方法[J].中国油脂,2023,48(3):.[GAO Mudan1，2，SHI Jingshuang1，2，HU Mingyan1，2.Oil extraction method in the determination of acid value and peroxide value of sesame paste and peanut butter[J].China Oils and Fats,2023,48(3):.] |
| 芝麻酱、花生酱酸值和过氧化值测定中的油脂提取方法 |
| Oil extraction method in the determination of acid value and peroxide value of sesame paste and peanut butter |
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| DOI： |
| 中文关键词: 芝麻酱 花生酱 丙酮 油脂提取 酸值 过氧化值 |
| 英文关键词:sesame paste peanut butter acetone oil extraction acid value peroxide value |
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| 摘要点击次数: 939 |
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| 中文摘要: |
| 为解决现有芝麻酱和花生酱酸值、过氧化值测定中油脂提取方法存在的提取时间长、效率低等问题，通过在样品中加入丙酮水溶液，使蛋白质发生变性、絮凝，从而破坏芝麻酱、花生酱稳定的溶胶体系，使体系快速分层，油脂快速游离出来，从而快速高效地提取油脂。具体方法：按料液比1∶1向芝麻酱、花生酱样品中加入丙酮水（体积比1∶1）溶液，搅拌混匀后加入3倍样品体积的石油醚，振摇提取，静置约30 min分层，将上层有机相经无水硫酸钠过滤，于40℃脱除溶剂，获得油脂。通过加入丙酮水溶液大大缩短了油脂提取时间，效率极大提高，并且降低了提取时间长带来的油脂氧化风险，提高了结果准确度。通过精密度、准确度方法学考察，证明该方法准确可靠。综上，该方法可以用于芝麻酱、花生酱产品酸值、过氧化值测定中油脂的提取。 |
| 英文摘要: |
| To solve the problems of long extraction time and low efficiency of the existing methods for oil extraction in the determination of acid value and peroxide value of sesame paste and peanut butter, the acetone water solution was added to the sample to denature and flocculate the protein, thereby destroying the stable sol system of peanut butter/sesame paste, so that the system could be quickly stratified, and the oil was quickly freed out, so the oil could be extracted efficiently and quickly. The specific extraction method was as follows: adding acetone-water (volume ratio 1∶1) solution to the sesame paste and peanut butter sample (ratio of samples mass to solvent volume 1∶1), stirring and mixing well, adding petroleum ether 3 times the sample volume, shaking, standing for stratification for about 30 min, the upper organic phase was filtered through a funnel filled with anhydrous sodium sulfate, and the solvent was removed at 40℃ to obtain oil. The extraction time was greatly shortened by adding acetone water solution, the efficiency was greatly improved, and the risk of oil oxidation caused by long extraction time was reduced, and the accuracy of the results was improved. The method was proved to be accurate and reliable by means of precision and accuracy methodology. In conclusion, the extraction method can be used to extract oil from sesame paste and peanut butter products for the determination of acid value and peroxide value. |
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