Bioconversion of rebaudioside I from rebaudioside A

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To supply the increasing demand of natural high potency sweeteners to reduce the calories in food and beverages, we have looked to steviol glycosides. In this work we report the bioconversion of rebaudioside A to rebaudioside I using a glucosyltransferase enzyme. This bioconversion reaction adds one sugar unit with a 1→3 linkage. We utilized 1D and 2D NMR spectroscopy (1H, 13C, COSY, HSQC-DEPT, HMBC, 1D TOCSY and NOESY) and mass spectral data to fully characterize rebaudioside I.




Prakash, I., Bunders, C., Devkota, K. P., Charan, R. D., Ramirez, C., Snyder, T. M., … Ter Halle, R. (2014). Bioconversion of rebaudioside I from rebaudioside A. Molecules, 19(11), 17345–17355.

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