Zobrazeno 1 - 10 of 61 pro vyhledávání: '"Karumanchiri, A."'
1
Iprodione content of wines: where do we draw the line?
Autor: George J. Soleas, David M. Goldberg, Alex Karumanchiri
Publikováno v: Journal of Wine Research. 10:5-13
In order to define a safer, yet realistically attainable, limit for iprodione in commercial wine‐making, its concentrations were measured in 546 finished commercial wines using a high‐performance liquid chromatography method with an ultra‐viole
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0f2e2b182c99c26cf2c923dc7c5ac776
https://doi.org/10.1080/09571269908718153
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5
A Multiresidue Derivatization Gas Chromatographic Assay for Fifteen Phenolic Constituents with Mass Selective Detection
Autor: Eleftherios P. Diamandis, and Alex Karumanchiri, George J. Soleas, David M. Goldberg
Publikováno v: Analytical Chemistry. 69:4405-4409
We have developed a GC/MS method to simultaneously measure the concentrations of 15 biologically active phenolic components of wine: vanillic acid, gentisic acid, m- and p-coumaric acid, gallic acid, ferulic acid, caffeic acid, cis- and trans-resvera
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::860cb1f9f246415527d0d5cc4378e1be
https://doi.org/10.1021/ac961320x
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7
Regional differences in resveratrol isomer concentrations of wines from various cultivars
Autor: George J. Soleas, Eleftherios P. Diamandis, David M. Goldberg, J. Yan, Eric Ng, Alex Karumanchiri
Publikováno v: Journal of Wine Research. 7:13-24
Using a newly developed GC‐MS method, the cis‐and trans‐resveratrol concentrations have been measured in 761 commercial red wines from 15 countries and regions. Data are presented on the individual isomer concentrations, the sum of the two isom
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6815babf2e583dfdaac51e8f5d176f7e
https://doi.org/10.1080/09571269608718057
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9
Assay of resveratrol glucosides and isomers in wine by direct-injection high-performance liquid chromatography
Autor: Alex Karumanchiri, David M. Goldberg, Eleftherios P. Diamandis, Joe Yan, George J. Soleas, E. Ng
Publikováno v: Journal of Chromatography A. 708:89-98
We have developed a normal-phase high-performance liquid chromatographic method to measure the glucosides of cis - and trans -resveratrol as well as the free isomers in commercial wines. The procedure utilises a novel technique for calibration requir
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d01b5c193b662fda232a79038ed74770
https://doi.org/10.1016/0021-9673(95)00368-w
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10
Direct Gas Chromatographic-Mass Spectrometric Method To Assay cis-Resveratrol in Wines: Preliminary Survey of Its Concentration in Commercial Wines
Autor: Joe Yan, Eleftherios P. Diamandis, Eric Ng, Alex Karumanchiri, David M. Goldberg, George J. Soleas
Publikováno v: Journal of Agricultural and Food Chemistry. 43:1245-1250
A method to measure cis-resveratrol in wine, as well as trans-resveratrol simultaneously, has been developed. One milliliter of wine is subjected to solid phase extraction on a C 18 column followed by elution with ethyl acetate, and 1 μL of eluate i
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8edcec2c641c7cac3a9759e1f2bd98f1
https://doi.org/10.1021/jf00053a023
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