| 索氏抽提测定含油量的方法改良及其应用 |
| |
| 引用本文： | 方敏,丁小霞,李培武,张兆威,陈小媚,姜俊,张文,甘冬生.索氏抽提测定含油量的方法改良及其应用[J].中国油料,2012(2):210-214. |
| |
| 作者姓名： | 方敏 丁小霞 李培武 张兆威 陈小媚 姜俊 张文 甘冬生 |
| |
| 作者单位： | [1]中国农业科学院油料作物研究所,湖北武汉430062 [2]农业部油料作物生物学与遗传育种重点实验室,湖北武汉430062 [3]农业部生物毒素检测重点实验室,湖北武汉430062 [4]农业部油料产品质量安全风险评估实验室武汉,湖北武汉430062 [5]农业部油料及制品质量监督检验测试中心,湖北武汉430062 |
| |
| 基金项目： | 湖北省创新团队项目; 国家油菜产业技术体系专项（CARS-13） |
| |
| 摘 要： | 对索氏抽提法测定含油量的方法进行了改良,在原索氏抽提装置上加装了恒温冷凝水系统,将冷凝水温度改为恒温15℃。改良后的索氏抽提法与原方法相比,测定结果的准确度和灵敏度显著提高,有效消除了因季节、气候等因素引起的温度变化所带来的测定值差异。2007年至2010年加拿大谷物委员会组织36家国际权威油料检测实验室开展国际油料品质比对检测,结果显示,本实验室检测结果｜Z｜值均小于2,且采用改良索氏抽提法后,测定结果的Z比分数由-1.98～-0.12减小到-0.60～0.20,相对偏差由-2.5%～-0.38%减小到-1.24%～0.24%,实现了含油量检测结果的国际接轨。
|
| 关 键 词： | 含油量 改良索氏抽提法 恒温冷凝 国际比对应用 |
Modification of oilseeds soxhlet extraction for determination of oil content |
| |
| Authors: | FANG Min DING Xiao-xia LI Pei-wu ZHANG Zhao-wei CHEN Xiao-mei JIANG Jun ZHANG Wen GAN Dong-sheng |
| |
| Affiliation: | 1.Oil Crops Research Institute of Chinese Academy of Agricultural Sciences,Wuhan 430062,China; 2.Key Laboratory of Biology and Genetic Improvement of Oil Crops,Ministry of Agriculture,Wuhan 430062,China; 3.Key Laboratory of Biotoxin,Ministry of Agriculture,Wuhan 430062,China; 4.Laboratory of Risk Assessment for Oilseeds Products(Wuhan),Ministry of Agriculture,Wuhan 430062,China; 5.Quality Inspection and Test Center for Oilseeds Product of the Ministry of Agriculture,Wuhan 430062,China) |
| |
| Abstract: | Soxhlet extraction method was modified for determination of oil content with combination of condensate water system at constant temperature.The optimal temperature of condensate water was at 15℃constantly.Modified method showed significant improvement on accuracy and sensitivity,and has less discrepancy in different seasons and surrounding temperatures.From 2007 to 2010,according to the International Laboratory Comparison on Determination of Oilseed,results of modified soxhlet extraction method illustrated excellent consistency with the other 35 international authoritative oil testing laboratories,and showed that the ｜Z｜ values were less than 2.Additionally,with the modified soxhlet extraction method,Z values decreased from-1.98~-0.12 to-0.60~0.20,and relative deviation decreased from-2.5%~-0.38% to-1.24%~0.24%,which suggedted that these test results of modified method reached international standards. |
| |
| Keywords: | Oil content Modified soxhlet extraction Constant condensate temperature International laboratory certification |
| 本文献已被 维普 等数据库收录！ |
|
