Vitamin D is responsible for enhancing intestinal absorption of calcium, iron, magnesium, phosphate and zinc by involving in the metabolism. However, its use in additive field is limited by its low aqueous solubility ...Vitamin D is responsible for enhancing intestinal absorption of calcium, iron, magnesium, phosphate and zinc by involving in the metabolism. However, its use in additive field is limited by its low aqueous solubility and chemical stability. So trace amounts of VD<sub>3</sub> was wrapped in β-CD molecule by the method of saturated aqueous vacuum drying, in order to improve its stability, uniformity and solubility in food and feed additive. The inclusion complex was characterized by NMR, IR techniques and compared with original VD<sub>3</sub> in the aspect of stability and bioavailability. Results of orthogonal design experiments show that the optimum technology of inclusion is that the feed ratio of β-CD to VD<sub>3</sub> is 15:1, being stirred for 5 hours at 80°C. Dispersion of VD<sub>3</sub> in the inclusion complex is more uniform, while stability and absorption rate of inclusion complex are significantly higher than original VD<sub>3</sub>.展开更多
文摘Vitamin D is responsible for enhancing intestinal absorption of calcium, iron, magnesium, phosphate and zinc by involving in the metabolism. However, its use in additive field is limited by its low aqueous solubility and chemical stability. So trace amounts of VD<sub>3</sub> was wrapped in β-CD molecule by the method of saturated aqueous vacuum drying, in order to improve its stability, uniformity and solubility in food and feed additive. The inclusion complex was characterized by NMR, IR techniques and compared with original VD<sub>3</sub> in the aspect of stability and bioavailability. Results of orthogonal design experiments show that the optimum technology of inclusion is that the feed ratio of β-CD to VD<sub>3</sub> is 15:1, being stirred for 5 hours at 80°C. Dispersion of VD<sub>3</sub> in the inclusion complex is more uniform, while stability and absorption rate of inclusion complex are significantly higher than original VD<sub>3</sub>.
基金This project was supported by National Natural Science Foundation of China and Foundation of opening Lab. of Electroanal. Chem., Institute of Applied Chem., Acadima Sinica, Changchun
