Abstract
Geniposidic acid is hydrolyzed to produce genipinic acid by the co-immobilized enzyme,and the type of amino acids which react with genipinic acid to produce gardenia red pigment and some reaction conditions are optimized,we also studied on the methods of purifying gardenia red pigment by macroporous resin. Optimized conditions are: pH of reaction solution of genipinic acid and amino acid is 4.0, the temperature is 40 °C, reaction time is 42 hr, glutamic acid is better for producing gardenia red pigment than other amino acids, molar ratio of glutamic acid and genipinic acid is 2:1,molar ratio of citric acid and genipinic acid is 6:1.Gardenia red pigment is adsorbed by HPD100 macroporous resin,then elute by ammonia water of pH 11, the eluent is dried under 50°C,the violet black powder is obtained,it’s color value can reach 92.32 (E1%1cm,528nm). To prepare gardenia red pigment from geniposidic acid by the co-immobilized enzyme has advantages of low cost, environmental friendly and easy to mass production.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
