The Research Of GABA And Red Pigments By Fermentation Of Monascus And The Stability Of Monascus Pigments Added With Antioxidant

Methods for extracting, separating, identifying GABA from Monascus were introduced. The power of Monascus was extracted by 75% ethanol (v/v) and in ultrasound extraction 40min. TLC was carried out to separate and identify GABA from extraction. The developing solution were n-butanol: Ethanol: Ammonia: H20(16: 16: 3: 12) and Isopropyl alcohol: Methanol: Ammonia: H2O(2O: 12: 3: 12). The results of TLC indicated that 3.4443 7F-1 and 3#-A have large production of GABA. And the color value detected by UV spectrometer at 490 nm indicated that 9G-1 has large production of red pigments. The color value of 9G-1 was 3696U/g.A novel, innocuous and low-costing antioxidant was developed for natural pigments from plant extracts, and it could significantly increase photostability of the natural pigments, such as Monascus pigments and their surviving rate by several times. The structure of the pigments were not changed after the addition of antioxidant, and the absorptive peak of the aqueous solution of red pigments produced by...