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投稿时间:2016-03-09
投稿时间:2016-03-09
中文摘要: 为评价不同加工处理方法对肉制品猪肉成分实时定量 PCR(RQ-PCR)检测结果的影响,研究建立混合肉制 品标准品(猪肉质量百分比 0.05 %~20 %),采用 5 种方法(煮制、微波加热、超声波、烤制、高温高压灭菌)对混合肉制 品进行处理,提取肉制品总 DNA,采用 RQ-PCR 扩增线粒体细胞色素 b(Cytb),以真核生物 18S rRNA 为内参,通过 驻Ctt 建立标准曲线并进行相对定量,比较 驻Ct 之间的差异,并由此判断不同加工方法对相对定量的影响,结果显示, 不同的加工处理方法均能引起 DNA 的降解。而通过 RQ-PCR 检测发现,虽然 Ct 值随 DNA 降解程度加深而升高,但 驻Ct 变化较小。因此,驻Ct 法可作为分析肉制品中猪肉成分的可靠定量手段。
Abstract:To evaluate the influence of different processing methods on real-time PCR relative quantification, this study set up reference meat mixture (with pork adulteration from 0.05 % to 20 %), five different methods (boiling, microwaving, sonication, baking, autoclaving) were applying to the reference meat mixture, then verified the total DNA degradation by gel electrophoresis. 驻Ct and the percentage of pork adulteration were used to establish standard curve, comparing the differences of 驻Cts to evaluate the influence of processing methods on relative quantification.The results showed that all the processing method could cause the degradation of DNA, among which autoclaving play the greatest role in DNA degradation, meanwhile the sonication was the slightest. In real-time PCR, Ct raising with processing continue but the changing of 驻Ct were small, 驻Ct can be used as a reliable analysis method for quantification pork in meat products.
文章编号:201701034 中图分类号: 文献标志码:A
基金项目:
Author Name | Affiliation |
YANG Yan, WANG Gui-ji, ZHOU Guang-yun, REN Hao-wei, XIA Xiu-fang, LIU Ning* | College of Food Science, Northeast Agricultural University, Harbin 150030, Heilongjiang, China |
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