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Authors = Kanlaya Jumpatong

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9 pages, 73 KiB  
Article
Electrocoagulation of Quinone Pigments
by Neeranuch Chairungsi, Kanlaya Jumpatong, Patiwat Suebsakwong, Waya Sengpracha, Weerachai Phutdhawong and Duang Buddhasukh
Molecules 2006, 11(7), 514-522; https://doi.org/10.3390/11070514 - 14 Jul 2006
Cited by 10 | Viewed by 9232
Abstract
Some representative quinones, viz. one naphthoquinone (plumbagin) and five anthraquinones (alizarin, purpurin, chrysazin, emodin, and anthrarufin), were subjected to electrocoagulation. It was found that the rate and extent of coagulation of these compounds appears to correlate with the number and relative position of [...] Read more.
Some representative quinones, viz. one naphthoquinone (plumbagin) and five anthraquinones (alizarin, purpurin, chrysazin, emodin, and anthrarufin), were subjected to electrocoagulation. It was found that the rate and extent of coagulation of these compounds appears to correlate with the number and relative position of their phenolic substituent groups, and that all of the coagulated quinones could be recovered. Attempts were then made to electrochemically isolate three quinones, namely plumbagin, morindone and erythrolaccin, from natural sources. Full article
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9 pages, 142 KiB  
Article
Solvent Effects in Electrocoagulation of Selected Plant Pigments and Tannin
by Neeranuch Chairungsi, Kanlaya Jumpatong, Weerachai Phutdhawong and Duang Buddhasukh
Molecules 2006, 11(5), 309-317; https://doi.org/10.3390/11050309 - 29 Apr 2006
Cited by 7 | Viewed by 10095
Abstract
Electrocoagulation of a plant extract and certain substances representative of selected classes of plant pigments, viz. chlorophyll, a carotenoid, a phenolic substance and a tannin, was performed in ethanol containing varying amounts of water (15-75%). The results showed that the extent and efficiency [...] Read more.
Electrocoagulation of a plant extract and certain substances representative of selected classes of plant pigments, viz. chlorophyll, a carotenoid, a phenolic substance and a tannin, was performed in ethanol containing varying amounts of water (15-75%). The results showed that the extent and efficiency of coagulation of these substances tends to vary in a manner directly related to the water content of the solvent, although the tannin and the phenolic substance were less sensitive to the solvent composition and are equally well coagulated in all solvent systems studied. The findings can be applied to the removal of these substances from aqueous alcoholic plant extracts using the electrocoagulation technique. Full article
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7 pages, 156 KiB  
Communication
Dechlorophyllation by Electrocoagulation
by Kanlaya Jumpatong, Weerachai Phutdhawong and Duang Buddhasukh
Molecules 2006, 11(2), 156-162; https://doi.org/10.3390/11020156 - 17 Mar 2006
Cited by 11 | Viewed by 8494
Abstract
Electrocoagulation was used for dechlorophyllation of alcoholic extracts from five plants. The results showed that for every plant extract studied, electrocoagulation was more efficient than the classical solvent extraction method in removing plant pigments, while not affecting the important secondary metabolites in those [...] Read more.
Electrocoagulation was used for dechlorophyllation of alcoholic extracts from five plants. The results showed that for every plant extract studied, electrocoagulation was more efficient than the classical solvent extraction method in removing plant pigments, while not affecting the important secondary metabolites in those extracts. Full article
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