当前位置: 首页 > 文章 > 酶联免疫吸附法( ELISA)测定黄曲霉毒素B_1的样品基质效应研究 中国油料作物学报 2014,36 (3) 404-408
Position: Home > Articles > Effect of sample matrix on determination of aflatoxin B_1 by enzyme - linked immunosorbent assay Chinese Journal of Oil Crop Sciences 2014,36 (3) 404-408

酶联免疫吸附法( ELISA)测定黄曲霉毒素B_1的样品基质效应研究

作  者:
张宁;李敏;李培武;张奇;张文;李冉
单  位:
中国农业科学院油料作物研究所
关键词:
花生;黄曲霉毒素B_1;ELISA;基质效应
摘  要:
为了探寻与免疫分析相配套的简易前处理方法,以黄曲霉毒素B_1( AFB_1)为靶标,花生样品为对象,研究了可能影响ELISA测定结果的样品前处理方法;采用实际样品加标回收的方法,研究比较了4种不同浓度( 5%、10%、20%和30%)甲醇稀释的样品基质同源ELISA灵敏度。结果表明,甲醇稀释度越小基质效应越明显;样品前处理中除油处理可显著提高回收率;样品前处理中免疫亲和柱净化后可消除相当一部分基质效应的影响,提高了回收率。研究结果为进一步开发简单快速的前处理方法提供了借鉴。
译  名:
Effect of sample matrix on determination of aflatoxin B_1 by enzyme - linked immunosorbent assay
作  者:
张宁(1);;李敏(1);;李培武(1);;张奇(1);;张文(1);;李冉(1)
单  位:
(1)中国农业科学院油料作物研究所, 农业部油料作物生物学与遗传育种重点实验室;;;;农业部生物毒素检测重点实验室, 湖北, 武汉, 430062
摘  要:
To optimize the pretreatment method for aflatoxin B_1 detection in peanuts by enzyme - linked immunosorbent assay ( ELISA) ,the effects of methanol and oil concentration in the extract were evaluated. The sensitivities and recoveries of ELISA for samples of 4 different methanol concentrations ( 5%,10%,20% and 30%) were investigated. Results showed that the smaller dilution degree of sample,the greater matrix interference. Removal of oil from the extract significantly reduced matrix interference. Purification with immunoaffinity column in pretreatment process greatly eliminated matrix interference. These results were expected to provide reference for further development of pretreatment process on aflatoxin immuno detection.

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