کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10154420 | 1666296 | 2019 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characterization of binding behaviors of Cd2+ to rice proteins
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this paper, for the first time the binding behavior of cadmium (Cd2+) to rice proteins (RPs) was studied. The results showed that the equilibrium of binding was reached within 30â¯min at 303â¯K with a maximum binding amount (q) of 15.26â¯mg/g, and the pH was an important factor positively influencing q. At both 308â¯K and 313â¯K, the binding of Cd2+ to RPs belonged to spontaneous, endothermic interactions with high-affinity, assigned to a multidentate coordination. Except for acetate, all the investigated competing coordination agents, such as edetate, pyrophosphate and citrate, showed inhibitory effects on RPs-Cd2+ binding, and edetate seemed to be the most effective one. At pH 6.5, calcium, copper and zinc began to restrict RPs-Cd2+ binding when the metal ion concentration reached 500â¯mg/kg, and the decreasing of pH would strengthen the inhibitory effects of the investigated metal ions including ferric ions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 275, 1 March 2019, Pages 186-192
Journal: Food Chemistry - Volume 275, 1 March 2019, Pages 186-192
نویسندگان
Wei Feng, Tiantian Dong, Keqiang Li, Tao Wang, Zhengxing Chen, Ren Wang,