Study on Preparation Technology of High Color Value Monascus Pigment Based on Orthogonal Experiment

[Objective] The purpose is to find the way to improve the color value of the red yeast rice.[Method] Taking Monascus as strains and rice as raw material,and solid culture method was used to product red yeast rice.Red yeast rice was fermented under different conditions.The best fermentation technology was achieved by measuring the color value of the red yeast rice.[Result] The best fermentation condition to improve the color value of red yeast rice are 10% bran addition,rice water content 40%,pH 5,inoculation volume 6% and fermentation period 8 d.Under the best fermentation condition,purple red yeast rice with a color value 370 was produced.[Conclusion]The study optimizes the pveparation technology of Monascus fermentation,lays a foundation for obtaining higheryield of Monascus pigment.