Study of Stability of Monascus Yellow Pigment and Methods for Enhancing its Photostabiliy

In this paper,the stability of Monascus yellow pigment prepared in our lab were investigated.Results showed that Monascus yellow pigment had high thermostability and bright color in acidic conditions.Single factor experiment and orthogonal experiment showed that,adding 0.03% tea polyphenols can improve its photostability effectively,while using the mixture of ascorbic acid and citric acid showed little impact on color-protection effect of tea polyphenols.So tea polyphenols can be used as a photostabilizer in food containing ascorbic acid and citric acid.