Detection of exogenous sugars in pineapple juice using compound-specific stable hydrogen isotope analysis
نویسندگان
چکیده
منابع مشابه
Measuring carbon isotope ratios of microphytobenthos using compound-specific stable isotope analysis of phytol
Carbon stable isotope analysis is one of the most common methods for validating theories about the role microphytobenthos (MPB) plays in estuarine food webs. However, difficulties extracting MPB from sediments to determine a pure isotope signature have hampered such studies. We have developed compound-specific isotope analysis (CSIA) of phytol δ13C (δCphytol) as an accurate proxy for δ 13C of b...
متن کاملCompound-specific isotope analysis
The isotopic composition, e.g. 14C/12C, 13C/12C, 2H/1H, 15N/14N and 18O/16O, of matter elements is heterogeneous. It is ruled by physical, chemical and biological mechanisms. Isotopes thus be enable to follow the fate of mineral and organic compounds during biogeochemical transformations. The determination of the isotopic composition of organic substances occurring at trace level into very comp...
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11 A fast and simple method for authenticating raspberry flavors from food products was developed. The two enantiomers 12 of the compound (E)-α-ionone from raspberry flavor were separated on a chiral gas chromatographic column. Based on 13 the ratio of these two enantiomers the naturalness of a raspberry flavor can be evaluated due to the fact that a natural 14 flavor will consist almost exclus...
متن کاملChemical composition and sensory analysis of fresh pineapple juice and deacidified pineapple juice using electrodialysis
Electrodialysis with monopolar ion exchange membranes was used to reduce the acid content of pineapple juice. It is an electrochemical membrane separation process in which electrically charged membranes and an electrical potential difference are used to separate ionic species in the pineapple juice from other uncharged components. Several physico-chemical (pH, titratable acidity and soluble sol...
متن کاملAn efficient method for isolating individual long-chain alkenones for compound-specific hydrogen isotope analysis.
Hydrogen isotope ratios (2H/H or D/H) of long-chain unsaturated ketones (alkenones) preserved in lake and marine sediments hold great promise for paleoclimate studies. However, compound-specific hydrogen isotope analysis of individual alkenones has not been possible due to chromatographic coelution of alkenones with the same carbon chain length but different numbers of double bonds. Published s...
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ژورنال
عنوان ژورنال: npj Science of Food
سال: 2021
ISSN: 2396-8370
DOI: 10.1038/s41538-021-00092-5