Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Catharina Y W Ang"'
Autor:
Thomas M. Heinze, Shengmin Sang, Shiming Li, Chi-Tang Ho, Jin-Woo Jhoo, Chih-Yu Lo, Catharina Y W Ang
Publikováno v:
Journal of Agricultural and Food Chemistry. 53:6146-6150
In the current study, we have focused on isolation and detection of major radical oxidation products from theaflavin in order to better understand antioxidation mechanisms of this compound. Theanaphthoquinone was identified as a major oxidation produ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4480fc71c8af7a0e8b828a863cd24e96
https://doi.org/10.1021/jf050662d
https://doi.org/10.1021/jf050662d
Publikováno v:
Journal of Pharmaceutical and Biomedical Analysis. 37:303-312
The influence of light and solution pH on the stability behavior of phloroglucinols (hyperforin and adhyperforin) and naphthodianthrones (hypericin, pseudohypericin, protohypericin and protopseudohypericin) extracted with methanol from St. John's wor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9482b82086d673012538b0e639d1a24
https://doi.org/10.1016/j.jpba.2004.10.034
https://doi.org/10.1016/j.jpba.2004.10.034
Autor:
Martha A. Hubbard, Yanyan Cui, W. Brooks Gentry, Stephanie F. Gardner, Bill J. Gurley, D. Keith Williams, Catharina Y. W. Ang
Publikováno v:
Drugs & Aging. 22:525-539
Elderly patients are more likely to ingest prescription medications concurrently with botanical supplements, and may therefore be vulnerable to herb-drug interactions. Phytochemical-mediated modulation of cytochrome P450 (CYP) activity may underlie m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::999e9835a6df4630a5206ff3d5194584
https://doi.org/10.2165/00002512-200522060-00006
https://doi.org/10.2165/00002512-200522060-00006
Publikováno v:
Journal of AOAC INTERNATIONAL. 88:16-25
Kava (Piper methysticum) dietary products have been sold worldwide for treatment of nervous anxiety, tension, and restlessness. Recent reports showed potential association of kava usage and liver injuries. This study was conducted to develop simple a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df4e7e6396a526a032979765445a5e55
https://doi.org/10.1093/jaoac/88.1.16
https://doi.org/10.1093/jaoac/88.1.16
Autor:
Frances Liu, Michael Dinovi, Lihong Hu, Kellie Kozak, Yanyan Cui, Wenhong Luo, Thomas M. Heinze, Catharina Y W Ang, James P. Freeman, Antonia Mattia
Publikováno v:
Journal of Agricultural and Food Chemistry. 52:6156-6164
Several bioactive botanicals including St. John's wort (SJW; Hypericum perforatum L.) have been used to formulate functional foods and beverages. This study aimed to investigate the stability of SJW components in aqueous solutions and fruit-flavored
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5323d2707ddb6dfcec7877e3a1cac1a7
https://doi.org/10.1021/jf0490596
https://doi.org/10.1021/jf0490596
Autor:
Chien M. Wai, Catharina Y W Ang, Thomas M. Heinze, Yanyan Cui, Michael Dinovi, Antonia Mattia, Qingyong Lang
Publikováno v:
Journal of AOAC INTERNATIONAL. 87:815-826
Ginkgo biloba leaf extract has been widely used in dietary supplements and more recently in some foods and beverages. Sample preparation procedures for determination of ginkgo terpene trilactones (including bilobalide and ginkgolides A, B, C, and J)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba2e2d50959eabf1775f8f115cf00687
https://doi.org/10.1093/jaoac/87.4.815
https://doi.org/10.1093/jaoac/87.4.815
Autor:
Stephen C. Strom, Shimin Zhang, Hongbo Cai, Raman Venkataramanan, Catharina Y. W. Ang, Bernard J. Komoroski, J. Matthew Hutzler, Timothy S. Tracy, Yan Yan Cui, Reginald F. Frye, Thomas Lehmann
Publikováno v:
Drug Metabolism and Disposition. 32:512-518
St. John's wort extract (SJW) (Hypericum perforatum L.) is among the most commonly used herbal medications in the United States. The predominance of clinical reports indicates that SJW increases the activity of cytochrome P450 3A4 (CYP3A4) enzyme and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2c062ff97d15b69fc4ab9d77d45f2ee
https://doi.org/10.1124/dmd.32.5.512
https://doi.org/10.1124/dmd.32.5.512
Autor:
Yanyan Cui, Catharina Y W Ang, Lawrence J Lin, Wenhong Luo, Hebron C. Chang, Thomas M. Heinze, Antonia Mattia
Publikováno v:
Journal of AOAC INTERNATIONAL. 85:1360-1369
St. John's wort ( Hypericum perforatum L.) preparations, a top-selling botanical dietary supplement used primarily as an antidepressant, has recently been used as an ingredient in some food products sold as functional foods. A rapid extraction techni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44db7028763e66e7d0e92bc107fad8c7
https://doi.org/10.1093/jaoac/85.6.1360
https://doi.org/10.1093/jaoac/85.6.1360
Publikováno v:
Journal of Chromatography B. 780:129-135
Hyperforin is one of the most important active components in St. John’s wort (Hypericum perforatum), a botanical dietary supplement used as an alternative treatment modality for mild to moderate depression. A solid-phase extraction (SPE) and an iso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d74213a4e749acb833e1e843a53cd61
https://doi.org/10.1016/s1570-0232(02)00439-7
https://doi.org/10.1016/s1570-0232(02)00439-7
Autor:
Yanyan Cui, Catharina Y W Ang
Publikováno v:
Journal of Agricultural and Food Chemistry. 50:2755-2759
A small-scale supercritical fluid extraction (SFE) method was developed for the selective extraction of phloroglucinols from St. John's wort (SJW) leaf/flower mixtures using supercritical carbon dioxide (CO2). The extraction efficiency was investigat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60b3b4e1859f1690a37247284d623ee3
https://doi.org/10.1021/jf011304n
https://doi.org/10.1021/jf011304n