Effect of soil contamination with heavy metals on soybean seed oil quality
2013
Khan, Riyazuddeen | Srivastava, Ruchi | Abdin, M. Z. | Manzoor, Nikhat | Mahmooduzzafar,
Soybean (Glycine max L.) plants were subjected to different levels of cadmium (Cd²⁺) and mercury (Hg²⁺) stress supplied as CdCl₂, HgCl₂ separately and as binary mixture (CdCl₂ + HgCl₂). An exposure of increasing concentration of heavy metals significantly reduces the oil content when applied separately, while the interactive effect of heavy metal showed less decrease in oil content and showed antagonistic impact of heavy metal on oil content. The study also revealed considerable changes in major and minor fatty acids of the soybean seeds due to heavy metal exposure. There was a noteworthy decrease in the amounts of fatty acid such as oleic acid (18:1), linoleic acid (18:2), while the fatty acids such as palmitic acid (16:0), stearic acid (18:0) and linolineic acid (18:3) were markedly increased as a result of increasing concentration of heavy metals. The results suggested that the heavy metal exposures adversely affected the seed oil content and changes in the fatty acid composition of oil.
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