water soluble monascus pigment 水溶性红曲色素
The water - soluble Monascus yellow pigment was prepared from the Monascus red pigment and sodium dithionite in base solution.
红曲红色素与连二亚硫酸钠在碱性溶液中反应，制得水溶性红色素。
The water soluble Monascus yellow pigment was prepared by reducing the cyclocarbonyl of monascorubrin and rubropunctatin to hydroxyl with sulphuric compounds.
以含硫化合物还原红曲色素，红斑素和红曲红素分子中的环羰基还原成羟基，得到水溶性红白曲黄色素。
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