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AssigneePepsiCo, Inc.
InventorsJunhua TAO, Guoqing LI, Xiaoliang LIANG, Thomas LEE, Gregory YEP, Maoqi HOU, Andrew TAO
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Provided is a method for preparing Rebaudioside M by using an enzyme method. In the method, Rebaudioside A or Rebaudioside D is used as a substrate, and in the presence of sucrose and UDP, Rebaudioside M is generated by means of reaction of the substrate under the catalysis of a mixture of UDP-glucosyl transferase and sucrose synthetase, or recombinant cells containing the UDP-glucosyl transferase and sucrose synthetase. The reaction is carried out in an aqueous-phase system at a temperature of 20 to 60° C. and pH 5.0 to 9.0. The reaction system further contains dimethyl sulfoxide at a concentration of 3% to 5% according to the ratio by volume for facilitating solubilization of the substrate.
1-14. (canceled)
A method for preparing rebaudioside M, the method comprising reacting rebaudioside D in a reaction solution with a glucosyl donor in the presence of recombinant cells comprising:
A method for preparing rebaudioside M, the method comprising reacting rebaudioside A in a reaction solution with a glucosyl donor in the presence of recombinant cells comprising:
A recombinant cell, comprising exogenous nucleic acid sequences encoding:
Dependencies are inferred from the claim text.