加拿大农业部油脂检验中心脂质物分析方法与特点

一、总脂肪的抽提 利用Bligh-Dyer方法，采用氯仿(CHCL3)/甲醇(CH3OH)抽提。

色谱-质谱联用技术在油脂检验中的应用

色谱-质谱联用技术(GC-MS和LC-MS)结合了色谱分离和质谱检测的优点,是一种高效的分析方法。在油脂检验中,色谱-质谱联用技术被广泛应用于检测油脂的成分、污染物、氧化与劣化产物及转基因成分,确保油脂产品的安全和质量。本文通过介绍色谱-质谱联用技术的原理,深入探讨其在油脂检验中的优势,并详细分析其在油脂成分分析、污染物检测、油脂氧化与劣化分析及转基因成分检测中的具体应用,旨在全面展示色谱-质谱联用技术在油脂检验中的重要性和广泛应用前景。

香油快速定量方法

作者利用香油的氯仿溶液与硫酸的显色反应,研究了一种现场测定香油含量的快速定量方法。该法简便、快速、准确、实用。不需要任何特殊试剂和设备,3分钟就能准确测出香油的含量,灵敏度高。特异性好,最低可检出0．005g的香油,其它植物油无干扰。回收率为95．6~100．3%,实验室和现场测定变异系数分别为0．75~3．6%及1．4%~3．3%。该法是目前测定香油含量的一种独特方法。并用这种方法,在国内首先调查提出了香油含量正常值的质量参考指标,进一步为国家制定香油含量的质量专业标准提供了参考数据,结合其专业质量标准,更能全面评价香油的质量。

浅谈植物油中残留溶剂的测定

国内中小型浸提油厂逐年增加,而浸出专用溶剂的生产尚未能按需求量比例增加,于是必须进行严格的管理与控制,优先供应溶剂损耗低的浸提油厂,就成为必然的趋势,为了加强管理以降低溶液损耗率许多油厂做了很多研究改进工作。下面介绍的三篇有关文章,都是各厂技术人员根据本厂现有情况,摸索出来的技术经验,在现场实行都取得了较大效果。特此在本刊上先行报导,并希望国内油脂厂及油脂化工厂提供各自的技术经验投送本刊刊登供同行同志参考。近闻本市有一种新产品“HAD—100型残留溶剂分析仪”已经有关科研单位与厂家合作研制成功,即将问世,特一并奉闻。

Oil Content Conversion between Ether-based and Ethanol-based Methods and Establishment of Admissible Error for Imported Wool

Due to various reasons, the inspection methods often need to be changed, and the detection reagents often need to be replaced. In this study, a comparative experiment was conducted between the ethanol-based and ether-based determination methods for oil content in imported wool. The determination results obtained from the two methods were treated as abscissa and ordinate respectively,and their linear relationship was analyzed. According to the linear regression analysis, the conversion equation of determination result between the two methods was obtained. In addition, the repeatability admissible error and reproducibility admissible error were established through analyzing the comparative experimental results by scientific software. This study will bring new ideas for further researches in this field, and provide reference for solving the similar problems in actual inspection work.