Fate of Resveratrol and Piceid through Different Hop Processings and Storage Times.

Fate of Resveratrol and Piceid through Different Hop Processings and Storage Times. Research Abstract Details 

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Fate of Resveratrol and Piceid through Different Hop Processings and Storage Times. Abstract Text:

Vesna Jerkovic,Sonia Collin,Vesna Jerkovic,Sonia Collin,

trans-Piceid and trans-resveratrol contents of hop cones, hop pellets, CO 2 extracts, and spent hop from American varieties (harvest 2004) were determined by reverse-phase high-performance liquid chromatography-atmospheric pressure chemical ionization-tandem mass spectrometry [RP-HPLC-APCI(+)-MS/MS]. Pelletization induced strong stilbene degradation in some cultivars. Similarly, 1 year of storage at 4 degrees C led to a huge loss of trans-piceid, especially in the case of hop cones (much faster than in model media, although well protected from light and oxygen). Therefore, after 8 months of storage, the overall stilbene content was in the same range whatever the conditioned form. Absent in fresh hop cones or pellets, cis-resveratrol was released from cis-piceid in all stored samples. On the other hand, no delta-viniferin was detected despite it is present in light-protected model media spiked with trans-piceid. Because supercritical carbon dioxide proved inefficient for recovering resveratrol and piceid from pellets, spent hop emerged as the most interesting material for subsequent specific stilbene extraction.

Fate of Resveratrol and Piceid through Different Hop Processings and Storage Times. Publishing Authors By Initials

V Jerkovic,S Collin,V Jerkovic,S Collin,

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Fate of Resveratrol and Piceid through Different Hop Processings and Storage Times. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of agricultural and food chemistry

VOLUME: 56

Page Numbers: 584-90

Journal Abbreviation: J. Agric. Food Chem.

ISSN: 0021-8561

DAY: 29

MONTH: 12

YEAR: 2007

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LANGUAGE: eng

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AFFILIATION: collin@inbr.ucl.ac.be.

Country: United States

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MEDLINETA: J Agric Food Chem

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