Effect of the cp4-epsps Gene on Metal Bioavailability in Maize and Soybean Using Bionic Gastrointestinal Tracts and ICP-MS Determination
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- 作者：Shun-Xing Li ; Li-Hui Chen ; Feng-Ying Zheng ; Yan-Cai Li
- 刊名：Journal of Agricultural and Food Chemistry
- 出版年：2013
- 出版时间：February 20, 2013
- 年：2013
- 卷：61
- 期：7
- 页码：1579-1584
- 全文大小：232K
- 年卷期：v.61,no.7(February 20, 2013)
- ISSN：1520-5118
文摘
The transformation and metabolism of dietary compounds are affected significantly by gut microbiota. Hence, gut microbiota are used to improve bionic gastrointestinal tracts. The effect of the cp4-epsps gene on metal bioavailability was proved by the comparison of the affinity-liposome metal content ratio (AMCR) in transgenic and conventional crops. The bioavailability of V, Mn, Co, Ga, Ag, Ba, and Pb in roundup ready soybean decreased significantly because the ratio of AMCR (RAMCR) in the transgenic crop and its corresponding conventional type ranged from 0.36 to 0.69. In roundup ready maize, metal bioavailability decreased for Li and Cr (i.e., RAMCR was 0.26 and 0.39, respectively) but increased for V, Co, and Pb (i.e., RAMCR was 1.48, 2.07, and 2.12, respectively). Compared with conventional crops, safe dosage and maximum consumption of roundup ready crops were 1.59 times for soybean and 0.78 times for maize.