Highly efficient and low-cost process for synthesis of 2-O-α-D-glucopyranosyl-6-O-(2-propylpentanyl)-L-ascorbic acid

• An efficient process of 6-bOcta-AA-2G without using pyridine was established. • The efficient production process by CGTase with soluble starch and amyloglucoaidase. • The yield by this process was about 3-times higher than that by the previous process. • This process is superior to the previous process in terms of efficiency and cost. 2- O -α- d- Glucopyranosyl-6- O -(2-propylpentanoyl)- l -ascorbic acid (6-bOcta-AA-2G) has shown a remarkable...