1,721,108 research outputs found
Method for determination of the origin and authenticity of materials with biological, biochemical and nutritional physiological relevance
No full textA method for determining the origin of substances with biological, biochemical and nutritional physiological relevance and distinguishing them from synthetic analogs using their relative positional oxygen or hydrogen isotope ratios (deltaO value and deltaH value), in which-based on the fact that for organic compounds there are at least two different primary or secondary sources for these elements, each with different isotope values, and the incorporation of these elements is accompanied by different, but characteristic effects-the positional deltaO values or deltaH values are individually determined in the substances to be tested and they are compared with the values expected from biosynthesis, where a correspondence or deviation allows the authenticity or origin or adulteration of the substance to be detected
Baker's yeast mediated enantioselective synthesis of the bisabolene sesquiterpenes (+)-epijuvabione and (-)-juvabione
No full textEnzyme-mediated preparation of enantiopure p-menthan-3,9-diols and their use for the synthesis of natural p-menthane lactones
No full textBaker’yeast mediated biohydrogenation of sulphur-functionalised methacrolein derivatives. Stereochemical aspects of the reaction and preparation of the two enantiomers of useful C4 bifunctional synthons
No full textSynthesis of the enantiomeric forms of alfa and gamma-damascone starting from commercial racemic alfa-ionone
No full textBaker's yeast-mediated enantioselective synthesis of the bisabolane sesquiterpenes (+)-curcuphenol, (+)-xanthorrhizol, (-)-curcuquinone and (+)-curcuhydroquinone
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A new enantioselective route to bisabolane sesquiterpenes phenols: synthesis of (S)-(+)-curcuphenol and (S)-(+)-curcumene
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