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甜菊糖苷(Steviol Glycosides)国际标准-JECFA 2016版
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FAO JECFA Monographs 19 103 STEVIOL GLYCOSIDES FROM STEVIA REBAUDIANA BERTONI (TENTATIVE) Tentative specifications prepared at the 82nd JECFA (2016) and published in FAO JECFA Monograph 19 (2016) superseding specifications prepared at the 73rd JECFA (2010) and published in FAO JECFA Monographs 10 (2010). An ADI of 0 - 4 mg/kg bw (expressed as steviol) was established at the 69th JECFA (2008). Information required by December 2017: • Method of Assay to replace the existing method and including as many steviol glycosides as possible (at least those listed in Appendix 1) in steviol glycoside mixtures, along with supporting validation information and chromatograms • Analysis results from a minimum of 5 batches for commercial samples including supporting chromatograms SYNONYMS INS no. 960 DEFINITION Steviol glycosides consists of a mixture of compounds containing a steviol backbone conjugated to any number or combination of the principal sugar moieties in any of the orientations occurring in the leaves of Stevia rebaudiana Bertoni including, glucose, rhamnose, xylose, fructose, and deoxyglucose. The product is obtained from the leaves of Stevia rebaudiana Bertoni. The leaves are extracted with hot water and the aqueous extract is passed through an adsorption resin to trap and concentrate the component steviol glycosides. The resin is washed with a solvent alcohol to release the glycosides and the product is recrystallized from methanol or aqueous ethanol. Ion exchange resins may be used in the purification process. The final product may be spray-dried. Chemical name, C.A.S. number, Chemical formula See Appendix 1 Structural formula Steviol (R1 = R2 = H) is the aglycone of the steviol glycosides. Glc, Rha, Fru, deoxyGlc and Xyl represent, respectively, glucose, rhamnose, fructose, deoxyglucose and xylose sugar moieties. Assay Not less than 95% of total of steviol glycosides on the dried basis.

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Christina
great
2017-03-22