Vol 4: Isolation and Characterization of a Novel Rebaudioside M Isomer from a Bioconversion Reaction of Rebaudioside A and NMR Comparison Studies of Rebaudioside M Isolated from Stevia rebaudiana Bertoni and Stevia rebaudiana MoReportar como inadecuado



 Vol 4: Isolation and Characterization of a Novel Rebaudioside M Isomer from a Bioconversion Reaction of Rebaudioside A and NMR Comparison Studies of Rebaudioside M Isolated from Stevia rebaudiana Bertoni and Stevia rebaudiana Mo


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This article is from Biomolecules, volume 4.AbstractA minor product, rebaudioside M2 2, from the bioconversion reaction of rebaudioside A 4 to rebaudioside D 3, was isolated and the complete structure of the novel steviol glycoside was determined. Rebaudioside M2 2 is considered an isomer of rebaudioside M 1 and contains a relatively rare 1→6 sugar linkage. It was isolated and characterized with NMR 1H, 13C, COSY, HSQC-DEPT, HMBC, 1D-TOCSY, and NOESY and mass spectral data. Additionally, we emphasize the importance of 1D and 2D NMR techniques when identifying complex steviol glycosides. Numerous NMR spectroscopy studies of rebaudioside M 1, rebaudioside D 3, and mixture of 1 and 3 led to the discovery that SG17 which was previously reported in literature, is a mixture of rebaudioside D 3, rebaudioside M 1, and possibly other related steviol glycosides.



Autor: Prakash, Indra; Bunders, Cynthia; Devkota, Krishna P.; Charan, Romila D.; Ramirez, Catherine; Priedemann, Christopher; Markosyan, Avetik

Fuente: https://archive.org/







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