Purple sweet potato (convolvulaceae) was an annual herb. It was rich in anthocyanin with nutrition and health function, etc. Therefore, it was a natural pigment resource to be exploited. In the present thesis, extraction, purification, stability and stablization of purple sweet potato pigment (PSPP) were studied and the results were as follows:
On the basis of single factor experiment, reponse surface methodology(RSM) was employed to optimize the extraction conditions of PSPP. The results were: tempera...