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Ionic Liquid-based Microwave-assisted Liquid-liquid Microextraction and High Performance Liquid Chromatography Determination of Sulfonamides from animal oils

引用

Chemical Research in Chinese Universities 2013年第4期29卷 647-652页

作者： FENG Xu-dong LIANG Fang-hui SU Rui WU Li-jie LI Xue-yuan WANG Xing-hua ZHANG Han-qi YU Ai-min College of Chemistry Jilin University Changehun 130012 P. R. China Department of Pharmacy Changchun Medical College Changchun 130117 P. R. China

The authors performed ionic liquid-based microwave-assisted liquid-liquid microextraction（IL-based MALLME） coupled with high performance liquid chromatographic separation for the determination of 6 sulfonamides （SAs） from animal oils. The target analytes were extracted from animal oil samples with sodium hydroxide solution containing 1-butyl-3-methylimidazolium tetrafluoroborateand as the extraction solvent under microwave irradiation. The experimental parameters of the IL-based MALLME, including types of ILs, volume of IL, amount of ion-pairing agent（NHaPF6）, pH value of sample solution, and extraction temperature and time were evaluated. The limits of detection and quantification obtained were in a range of 0.4--0.5μg/kg and a range of 1.2--1.8μg/kg, respectively. The accuracy of the method was evaluated by analyzing five spiked animal oil samples at two fortified levels（5 and 50μg/kg）, and the recoveries of SAs varied from 81.4% to 114.5% with relative standard deviations ranging from 0.8% to 9.0%.

关键词： Ionic liquid-based microwave-assisted liquid-liquid microextraction(IL-based MALLME) High perfor-mance liquid chromatography(HPLC) Sulfonamide animal oil

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Preparation of Liquid Soap from Sheep’s Tail Fat

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Open Journal of Applied Sciences 2022年第5期12卷 662-671页

作者： Zoljargal Batnasan Pagamdulam Natsagdorj Tugsuu Tserendorj School of Applied Science and Engineering National University of Mongolia Ulaanbaatar Mongolia School of animal Science and Biotechnology Mongolian University of Life Science Ulaanbaatar Mongolia

The aim of this study was to select sheep fat from Tsetserleg sum of Arkhangai aimag as raw material and to produce liquid soap. The oil was extracted from raw materials such as sheep’s tail fat (TF), outer fat (OF), and inner fat (IF), which were analyzed by chemical methods, and the liquid soap was obtained by cold methods. Liquid soap was prepared from three types of raw materials, each of which was mixed with 70% fat oil and 30% liquid oil. The ratio was chosen to dilute the liquid soap to 2% of the product. The most suitable oil for preparing liquid soaps from raw materials such as TFO, OFO, and IFO was the tail fat oil (TFO). The highest unsaturated fatty acid content in crude fats and oils was 41.23%, the highest content of saturated fatty acids was 22.3%, and the highest content of methyl-stearate was 33.65% by the GC-MS analytical method.

关键词： Liquid Soap animal oil Cold Method Dilution Ratio Fatty Acid

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区分动植物油的气相色谱-质谱分析

区分动植物油的气相色谱-质谱分析

引用

2008年全国有机质谱学术会议

作者：张桂霞王继芬陈占合北京市公安局刑事科学技术研究所中国人民公安大学刑事科学技术系

在实际办案中,经常需要对附着在不同载体上的油脂斑痕进行检验,嫌疑斑痕为何类何种油脂对案件的侦破有重大意义。各个领域的专家对动植物油的成分进行研究的目的各不相同,食品工业中偏重于动植物油的食用价值,医学中偏重研究油脂对身体... 详细信息

在实际办案中,经常需要对附着在不同载体上的油脂斑痕进行检验,嫌疑斑痕为何类何种油脂对案件的侦破有重大意义。各个领域的专家对动植物油的成分进行研究的目的各不相同,食品工业中偏重于动植物油的食用价值,医学中偏重研究油脂对身体的益处或危害,而司法鉴定领域,偏重于对常

关键词： discrimination animal oil vegetable oil gas chromatography-mass spectroscopy(GC-MS)

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