TY  - BOOK
AU  - Masawaki,T.
AU  - Taya,M.
AU  - Tone,S.
TI  - Selective Solvent Extraction of Ruberythric Acid from Madder Roots and Subsequent Hydrolysis with Beta-Glucosidase
KW  - SOLVENT EXTRACTION
KW  - RUBERYTHRIC ACID
KW  - MADDER ROOT
KW  - ENZYMATIC HYDROLYSIS
N2  - Selective solvent extraction of anthraquinones (alizarin and lucidin)and their prlmeverosides (ruherythric acid and lucidin-3-o-primeveroside)from madder roots could be achieved using two-phase extractm with chloroform (CHCl& and potassium hydroxide aqueous solution (KOH,). Ruberythrlc acid extracted to the aqueous phase could be selectively and completely converted to aliznrln within 360 mln by enzymatic hydrolysis with B-glucosidase at 50°C and at pH 5, reducing the inhibitory effect on the reaction caused by alizarin, which is not extracted in appreciable amounts into the aqueous phase, without appreciable hydrolysis of ldcidln-3- o-primeveroside. It was also found that ruberythrlc acid extracted from madder hairy roots by CHC13- KOH,, two-phase extraction was efficiently converted to alizarin in the same manner
UR  - https://drive.google.com/file/d/1GXqRXemHAV5nEHTK8U8xlSqdaP-AuYKs/view?usp=drivesdk
ER  -