Determination of Sulfite in Oriental Herbal Medicines

Autor:	Won-Il Na, Sang-Yong Park, Hie-Joon Kim, Soo Jin Park, Young-Kyung Kim, Eunmi Koh, Seung-Yeup Chang
Rok vydání:	2000
Předmět:	Pharmacology Pueraria Chromatography biology Extraction (chemistry) Ion chromatography Mineralogy biology.organism_classification Analytical Chemistry Rhizome chemistry.chemical_compound Sulfite chemistry Pinellia Environmental Chemistry Radix Medicinal plants Agronomy and Crop Science Food Science
Zdroj:	Journal of AOAC INTERNATIONAL. 83:1149-1154
ISSN:	1944-7922 1060-3271
DOI:	10.1093/jaoac/83.5.1149
Popis:	Sulfite was detected in 7 varieties of Oriental herbal medicines (Pueraria radix, Zingiberis rhizoma, Platycodon radix, Adenophora radix, Pinellia tuber, Astragalus radix, and Paeonia radix) on the Korean market. Sulfiting of commercial Oriental herbal medicines by fumigation with burning bituminous coal was simulated, and the accumulation of sulfite was investigated by using fresh Platycodon radix roots obtained from a growing field. The sulfite level reached a plateau in 9 h, and the maximum sulfite level found by the Monier-Williams (MW) method (AOAC 990.28) was 1020 ppm. The sulfite content in the simulated Platycodon radix sample determined by alkali extraction followed by ion-exclusion chromatography with electrochemical detection (AOAC 990.31) was approximately 17% lower on average than the MW results. Free-sulfite levels determined by acid extraction and ion-exclusion chromatography with electrochemical detection were between 19 and 49% of the MW results. The advantages of different methods for sulfite determination and the significance of the results are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::98d7a12c4489c4fbff34b492915a6283 https://doi.org/10.1093/jaoac/83.5.1149 Zobrazit plný text záznamu