Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Charles W Thorpe"'
Autor:
Dennis W. Gaines, Robert C. Braunberg, Ruey K. Chi, Matthew C. Smith, Charles W. Thorpe, Leonard Friedman
Publikováno v:
Toxic Substance Mechanisms. 16:15-42
The possible interaction between pairs of aflatoxins com monly occurring together in foods was evaluated by determining their biochem ical actions on the liver and hepatocytes of young mature rats. RNA synthesis, a sensitive and 14 early target of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3d140c902e2fd97c8743fd09841d3b8
https://doi.org/10.1080/107691897229775
https://doi.org/10.1080/107691897229775
Autor:
Charles W Thorpe, Robert L Johnson
Publikováno v:
Journal of AOAC INTERNATIONAL. 57:861-865
A gas-liquid chromatographic (GLC) method is described for the analysis of the mycotoxin penicillic acid in corn, dried beans, and apple juice. The samples are extracted with ethyl acetate and the penicillic acid is isolated by liquidliquid extractio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7762b720beed236af9f47223e810c64a
https://doi.org/10.1093/jaoac/57.4.861
https://doi.org/10.1093/jaoac/57.4.861
Publikováno v:
Journal of AOAC INTERNATIONAL. 63:637-641
A method is described for the determination of roquefortine in blue cheese and blue cheese dressing. The method involves sample extraction with ethyl acetate, cleanup by liquid-liquid partition, and determination by high pressure liquid chromatograph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3d6ac146a547964b482812bc6c92ca3
https://doi.org/10.1093/jaoac/63.3.637
https://doi.org/10.1093/jaoac/63.3.637
Autor:
George M Ware, Charles W Thorpe
Publikováno v:
Journal of AOAC INTERNATIONAL. 61:1058-1062
A method is reported for determining zearalenone in corn at levels as low as 10 ng/g. Samples are extracted with chloroform-water and cleaned up by liquid-liquid chromatography, and the zearalenone is detected by a fluorescence detector after separat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::131a0f16daee51f15eeaf3ac0b8028fb
https://doi.org/10.1093/jaoac/61.5.1058
https://doi.org/10.1093/jaoac/61.5.1058
Publikováno v:
Journal of AOAC INTERNATIONAL. 66:587-591
A high pressure liquid chromatographic (HPLC) method is described for the determination of xanthomegnin in grains and mixed animal feeds at levels ranging from 150 to 1200 ng/g. This is equivalent to actual amounts of xanthomegnin injected on the HPL
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e12b34709bf941a0f50451056c5e40a
https://doi.org/10.1093/jaoac/66.3.587
https://doi.org/10.1093/jaoac/66.3.587
Autor:
James A Sphon, Robert M Eppley, Denis Andrzejewski, Eric W. Trucksess, Frederick S. Thomas, John A. G. Roach, Peter A. Dreifuss, William C. Brumley, Charles W Thorpe
Publikováno v:
Biological Mass Spectrometry. 9:451-458
Hydroxide ion chemical ionization mass spectra of two classes of trichothecenes are described. The spectra provide molecular weight information as well as fragment ions indicative of structure. The discussion of fragmentation is aided by the use of h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::caa016c59938603a7d12f5e75b02669e
https://doi.org/10.1002/bms.1200091008
https://doi.org/10.1002/bms.1200091008
Publikováno v:
Journal of AOAC INTERNATIONAL. 53:692-695
A method is described for the quantitative analysis of patulin in apple juice involving ethyl acetate extraction followed by derivatization of the patulin and subsequent GLC analysis of the derivative. Preparation of 3 derivatives, the silyl ether, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e8a4cb53938e43447f3e72085e4e538c
https://doi.org/10.1093/jaoac/53.4.692
https://doi.org/10.1093/jaoac/53.4.692
Autor:
Charles W Thorpe
Publikováno v:
Journal of AOAC INTERNATIONAL. 52:778-781
A method employing TLC-GLC for detecting animal fats in vegetable fats was subjected to collaborative study. The method involves preparative TLC of unsaponifiable matter followed by GLC of the isolated sterols. The results of this study, based on GLC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79573e424a8e6849880b1825757e74ac
https://doi.org/10.1093/jaoac/52.4.778
https://doi.org/10.1093/jaoac/52.4.778
Publikováno v:
Journal of AOAC INTERNATIONAL. 52:774-778
A inethod is described for analysis of sterols by thin layer chromatography-gas liquid chromatography (TLC-GLC). Sterols are isolated from other components of unsaponifiable matter by preparative TLC. The sterols are quantitatively removed from the T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0809b4ec3bec53f54c29d5a2adb857be
https://doi.org/10.1093/jaoac/52.4.774
https://doi.org/10.1093/jaoac/52.4.774
Autor:
Charles W Thorpe
Publikováno v:
Journal of AOAC INTERNATIONAL. 53:623-628
Four methods were evaluated for detecting adulteration of butter fat with vegetable fats. The procedures involve GLC determination of free or combined β-sitosterol after isolation of the sterols by either preparative GLC or digitonin precipitation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0501f11eb6d0fd6a10c78b1f2d836385
https://doi.org/10.1093/jaoac/53.3.623
https://doi.org/10.1093/jaoac/53.3.623