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Explored by Author in CAPLUS and
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phutdhawong, weerachai
Selected 2 of 2 candidates
PHUTDHAWONG W (2 references)
PHUTDHAWONG WEERACHAI (21
references)
Copyrights:
CAPLUS: Copyright Ó 2008 American Chemical Society.
All Rights Reserved. (The UK patent material in this product/service is UK
Crown copyright and is made available with permission. Ó Crown Copyright. The French (FR) patent material in this
product/service is made available from Institut National de la Propriete
Industrielle (INPI).)
MEDLINE: Produced by the U.S. National
Library of Medicine
REGISTRY: Copyright Ó 2008 American Chemical Society.
All Rights Reserved. (Some records contain information from GenBank(R). See also:
Benson D.A., Karsch-Mizrachi I., Lipman D.J., Ostell J., Rapp B.A., Wheeler D.L.
Genbank. Nucl. Acids Res. 28(1):15-18 (2000). Property values tagged with IC
are from the ZIC/VINITI data file provided by InfoChem.) CAS Registry is a service mark of the
American Chemical Society.
CASREACT: Copyright Ó 2008 American Chemical Society.
All Rights Reserved. CASREACT contains
reactions from CAS and from: ZIC/VINITI database (1974-1999) provided by
InfoChem; INPI data prior to 1986; Biotransformations database compiled under
the direction of Professor Dr. Klaus Kieslich; organic reactions, portions
copyright 1996-2006 John Wiley & Sons, Ltd., John Wiley and Sons, Inc., Organic
Reactions Inc., and Organic Syntheses Inc. Reproduced under license. All Rights
Reserved.
CHEMLIST, CHEMCATS: Copyright Ó 2008 American Chemical Society.
All Rights Reserved.
Bibliographic
Information
Chemical
composition and antioxidant evaluation of volatile oils from Thai medicinal
plants. Kawaree, R.; Okonogi, S.; Chowwanapoonpohn, S.;
Phutdhawong, W.. Pharmaceutical
Sciences Department Faculty of Pharmacy,
Chiang Mai University, Chiang Mai, Thailand.
Acta Horticulturae (2008), 786(Proceedings of the International Workshop
on Medicinal and Aromatic Plants, 2007),
209-215. Publisher: International
Society for Horticultural Science, CODEN:
AHORA2 ISSN: 0567-7572. Journal
written in English. AN 2008:862739 CAPLUS
(Copyright (C) 2008 ACS on SciFinder (R))
Abstract
The
volatile oils from fresh leaves of Emilia sonchifolia, Eupatorium odoratum and
Spilanthes acmella were isolated by hydrodistn.
These volatile oils were detd. for their antioxidant capacities as well
as total phenolic compds. The three well
known methods; 1) 2,2'-azinobis(3-ethylbenzothia-zoline-6-sulfonic acid) diammonium
salt; ABTS+ assay, 2) ferric reducing antioxidant power (FRAP) assay, 3) lipid
peroxidn. assay were used, resp., in order to obtain the antioxidant activity. The total phenolic content was evaluated
according to the Folin-Ciocalteu procedure.
Antioxidant screening of samples showed that the antioxidant activities
of the selected volatile oils ranged from 40 to 276 mmol Trolox equiv. per g, together
with FRAP assay ranged from 60 to 350 mmol Fe(II) equiv. per g, and
finally with the lipid peroxidn. assays ranged from 9.1% to 61.55%. In total phenolic compds. screening assay, the
results ranged from 12 to 308 GAE (mg/g). The results of this investigation
significantly showed that the volatile oil of S. acmella possessed both of the
highest antioxidant activity in all three assays as well as the total phenolic
compds. In addn., the volatile oil of S.
acmella was analyzed through a combination of gas chromatog. and mass
spectrometry (GC-MS) coupled with mass selective detecter (MSD). The major components of S. acmella were
germacrene-D (54.38%), trans-beta-caryophyllene (14.58%), beta-elemene (4.53%),
nor-copaanone (2.44%) and bicyclogermacrene (2.15%), resp. These results indicated that S. acmella has
proved to be a good source of antioxidants that might serve to protect health
and fight against diseases in the future.
Bibliographic
Information
Fatty acid
content and antioxidant activity of Thai bananas.
Meechaona, Rungnapa; Sengpracha, Waya; Banditpuritat,
Jirawan; Kawaree, Rungthip; Phutdhawong, Weerachai. Department of Chemistry, Faculty of Science, Maejo University, Chiang Mai,
Thailand. Maejo International
Journal of Science and Technology (2007), 1(2), 222-228. Publisher: Maejo University, CODEN: MIJSAH
ISSN: 1905-7873. http://www.mijst.mju.ac.th/vol1/222-228.pdf Journal; Online Computer File written in English. CAN 148:283862 AN 2008:164191 CAPLUS
(Copyright (C) 2008 ACS on SciFinder (R))
Abstract
The
aril exts. of three Thai banana varieties, namely "Kluai Khai"(KK), "Kluai
Namwa"(KN) and "Kluai Hom"(KH) were analyzed by gas chromatog. and
mass spectrometry (GC-MS). GC-MS data
were used to identify 5 Me esters of each banana ext. after transesterification. The most prominent components found in KK, KN
and KH were hexadecanoic acid Me ester (43.17, 29.18, 30.57% resp.), 9, 12, 15-octadecatrienoic
acid Me ester (35.93, 30.46, 39.68% resp.), 9, 12-octadecadienoic acid Me ester
(14.35, 36.10, 21.82% resp.), 9-hexadecenoic acid Me ester (3.76, 3.34, 3.32%
resp.) and octadecanoic acid Me ester (2.79, 0.92, 4.60% resp.). The antioxidant activity of the crude oils
was evaluated using DPPH method.
Bibliographic
Information
Flavour compounds
of the Japanese vegetable soybean "Chakaori" growing in Thailand.
Plonjarean, Suttirak; Phutdhawong, Weerachai;
Siripin, Settha; Suvannachai, Napattarapong; Sengpracha, Waya. Department of Agronomy, Faculty of
Agricultural Production, Maejo University, Chiang Mai,
Thailand. Maejo International
Journal of Science and Technology (2007), 1(1), 1-9. Publisher: Maejo University, CODEN: MIJSAH
ISSN: 1905-7873. http://www.mijst.mju.ac.th/vol1/1-9.pdf Journal; Online Computer File written in English. CAN 148:330114 AN 2007:1074721 CAPLUS
(Copyright (C) 2008 ACS on SciFinder (R))
Abstract
The
vegetable soybean ("Chakaori") grown in Thailand was examd. to det. its
flavor components. The analyzed sample
was prepd. by solvent extn. and the chem. components were identified by gas
chromatog.-mass spectrometry (GC-MS). Twenty-seven
components were detected including 2-acetylpyrrole which was identified for the
first time in soybean. The most abundant
flavor compds. detected were n-hexanal (0.91%), 1-hexanol (1.79%), 2-hexanal (0.48%),
3-hexene-1-ol (0.49%) and phenylethyl alc. (0.40%).
Bibliographic
Information
Microwave-assisted
isolation of essential oil of Cinnamomum iners Reinw. ex Bl.: comparison with
conventional hydrodistillation. Phutdhawong,
Weerachai; Kawaree, Rungthip; Sanjaiya, Samart; Sengpracha, Waya; Buddhasukh, Duang. Department
of Chemistry, Faculty of Science, Maejo
University, Chiang Mai, Thailand.
Molecules (2007), 12(4),
868-877. Publisher: Molecular
Diversity Preservation International, CODEN:
MOLEFW ISSN: 1420-3049. http://www.mdpi.org/molecules/papers/12040868.pdf Journal; Online Computer File written in English. CAN 148:105519 AN 2007:508341 CAPLUS
(Copyright (C) 2008 ACS on SciFinder (R))
Abstract
Microwave-assisted
hydrodistn. was used to isolate an essential oil from the leaves of Cinnamomum
iners Reinw. ex Bl., and the results compared with those obtained by
conventional hydrodistn. The compn. of
the oil from both methods was found to be similar, and (-)-linalool was found
as the main component (30-50 %). The
antioxidant activity of the essential oil obtained by both methods was
evaluated using DPPH, ABTS, FRAP and lipid peroxidn. methods, all of which
indicated the same but insignificant activity.
Bibliographic
Information
Microcystin LR
content in Microcystis aeruginosa Kutz collected from Sri Sakhett, Thailand.
Sengpracha, Waya; Suvannachai, Napattarapong;
Phutdhawong, Weerachai. Department of
Chemistry, Faculty of Science, Silpakorn
University, Nakhon Pathom, Thailand.
Chiang Mai Journal of Science (2006), 33(2),
231-236. Publisher: Chiang Mai
University, Faculty of Science, CODEN: CMJSB4 Journal
written in English. CAN 146:201155 AN 2006:930240 CAPLUS
(Copyright (C) 2008 ACS on SciFinder (R))
Abstract
Microcystin
LR in Microcystis aeruginosa Kutz, collected from Sri Sakhett, Thailand, has
been investigated using reverse-phase HPLC with UV detection and the percentage
yield was calcd. using calibration curve.
The results showed a 0.059% yield of microcystin LR (2.93 ´ 10-4 g in 0.50 g of sample). The structure of microcystin LR was confirmed
using NMR spectroscopic anal.
Bibliographic
Information
Electrocoagulation of quinone pigments.
Chairungsi, Neeranuch; Jumpatong, Kanlaya; Suebsakwong,
Patiwat; Sengpracha, Waya; Phutdhawong, Weerachai; Buddhasukh, Duang. Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai,
Thailand. Molecules (2006),
11(7), 514-522. Publisher: Molecular Diversity Preservation
International, CODEN: MOLEFW ISSN: 1420-3049. http://www.mdpi.org/molecules/papers/11070514.pdf Journal; Online Computer File written in English. CAN 146:297665 AN 2006:764159 CAPLUS
(Copyright (C) 2008 ACS on SciFinder (R))
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 compds. appears to
correlate with the no. and relative position of their phenolic substituent
groups, and that all of the coagulated quinones could be recovered. Attempts were then made to electrochem. isolate
three quinones, namely plumbagin, morindone and erythrolaccin, from natural
sources.
Bibliographic
Information
Solvent effects
in electrocoagulation of selected plant pigments and tannin.
Chairungsi, Neeranuch; Jumpatong, Kanlaya; Phutdhawong,
Weerachai; Buddhasukh, Duang. Department
of Chemistry, Faculty of Science, Chiangmai
University, Chiang Mai, Thailand.
Molecules (2006), 11(5),
309-317. Publisher: Molecular
Diversity Preservation International, CODEN:
MOLEFW ISSN: 1420-3049. http://www.mdpi.org/molecules/papers/11050309.pdf Journal; Online Computer File written in English. CAN 145:151465 AN 2006:490106 CAPLUS
(Copyright (C) 2008 ACS on SciFinder (R))
Abstract
Electrocoagulation
of a plant ext. and certain substances representative of selected classes of
plant pigments, viz. chlorophyll, carotenoid, phenolic substances and tannin, was
performed in ethanol contg. varying amts. 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 compn. and are
equally well coagulated in all solvent systems studied. The findings can be applied to the removal of
these substances from aq. alc. plant exts. using the electrocoagulation
technique.
Bibliographic
Information
Chlorophyll
remove by electrocoagulation. Jumpatong,
Kanlaya; Phutdhawong, Weerachai; Buddhasukh, Duang. Department of Chemistry, Faculty of Science, Chiangmai University, Chiangmai,
Thailand. Molecules (2006),
11(2-3), 156-162. Publisher: Molecular Diversity Preservation
International, CODEN: MOLEFW ISSN: 1420-3049. http://www.mdpi.org/molecules/papers/11020156.pdf Journal; Online Computer File written in English. CAN 145:162379 AN 2006:314654 CAPLUS
(Copyright (C) 2008 ACS on SciFinder (R))
Abstract
Electrocoagulation
was used for dechlorophyllation of alc. exts. from five plants. The results showed that for every plant ext. studied,
electrocoagulation was more efficient than the classical solvent extn. method
in removing plant pigments, while not affecting the important secondary
metabolites in those exts.
Bibliographic
Information
Microwave-assisted
facile synthesis and crystal structure of cis-9,10,11,15-tetrahydro-9,10[3',4']-furanoanthracene-12,14-dione.
Phutdhawong, Weerachai; Buddhasukh, Duang; Pyne,
Stephen; Rujiwatra, Apinpus; Pakawatchai, Chaveng. Department of Chemistry, Maejo University, Chiang Mai,
Thailand. Synthetic Communications (2006),
36(7), 881-883. Publisher: Taylor & Francis, Inc., CODEN: SYNCAV
ISSN: 0039-7911. Journal written in English. CAN 144:390676 AN 2006:186292 CAPLUS
(Copyright (C) 2008 ACS on SciFinder (R))
Abstract
A
facile synthesis and crystal structure of cis-9,10,11,15-tetrahydro-9,10[3',4']-furanoanthracene-12,14-dione
from the reaction of anthracene and maleic anhydride in xylene in a short time
and high yield using a modified com. domestic microwave oven is reported. The structure of the product was confirmed by
x-ray diffraction anal.
Bibliographic
Information
Facile microwave-assisted
synthesis of 9,10-dihydro-9,10-ethanoanthracene-11-carboxylic acid methyl ester.
Phutdhawong, Weerachai; Buddhasukh, Duang. Department of Chemistry, Maejo University, Chiang Mai,
Thailand. Molecules (2005),
10(11), 1409-1412. Publisher: Molecular Diversity Preservation
International, CODEN: MOLEFW ISSN: 1420-3049. http://www.mdpi.org/molecules/papers/10111409.pdf Journal; Online Computer File written in English. CAN 144:253884 AN 2005:1286533 CAPLUS
(Copyright (C) 2008 ACS on SciFinder (R))
Abstract
A
facile, high yielding synthesis of 9,10-dihydro-9,10-ethano-anthracene-11-carboxylic
acid Me ester using a modified com. domestic microwave oven is reported.
Bibliographic
Information
GC-MS analysis of
fatty acids in Thai durian aril. Phutdhawong,
Weerachai; Kaewkong, Sumittra; Buddhasukh, Duang. Department of Chemistry, Faculty of Science, Maejo University, Chiang Mai,
Thailand. Chiang Mai Journal of
Science (2005), 32(2),
169-172. Publisher: Chiang Mai
University, Faculty of Science, CODEN: CMJSB4 Journal
written in English. CAN 144:146533 AN 2005:955540 CAPLUS
(Copyright (C) 2008 ACS on SciFinder (R))
Abstract
The
aril ext. of a variety of Thai durian was analyzed by combined gas chromatog. and
mass spectrometry (GC-MS). The GC-MS
data were used to identify 7 Me esters of the durian ext. after
transesterification. The most prominent
components found were stearic acid Me ester (35.93%), palmitic acid Me ester (32.91%),
palmitoleic acid Me ester (9.50%), 10-octadecenoic acid Me ester (4.86%), oleic
acid Me ester (4.68%), myristic acid Me ester (2.52%) and linoleic acid Me
ester (2.20%).
Bibliographic
Information
The components
and anticancer activity of the volatile oil from Streblus asper.
Phutdhawong, Weerachai; Donchai, Arworn; Korth,
John; Pyne, Stephen G.; Picha, Porntipa; Ngamkham, Jarunya; Buddhasukh, Duang. Department of Chemistry, Faculty of Science, Maejo University, Chiang Mai,
Thailand. Flavour and Fragrance
Journal (2004), 19(5),
445-447. Publisher: John Wiley &
Sons Ltd., CODEN: FFJOED ISSN: 0882-5734. Journal
written in English. CAN 142:151876 AN 2004:811822 CAPLUS (Copyright (C) 2008 ACS on SciFinder (R))
Abstract
The
volatile oil from fresh leaves of Streblus asper Lour. was isolated by
hydrodistn. and analyzed through a combination of gas chromatog. with FID (GC-FID)
and gas chromatog.-mass spectrometry (GCMS).
The essential oil was obtained in 0.005% yield as a brown liq. The major constituents of the volatile oil of
S. asper were phytol (45.1%), a-farnesene (6.4%), trans-farnesyl
acetate (5.8%), caryophyllene (4.9%) and trans-trans-a-farnesene (2.0%). In addn., the volatile oil showed significant
anticancer activity (ED50 .mchlt. 30 mg/mL) from cytotoxicity primary
screening tests with P388 (mouse lymphocytic leukemia) cells but no significant
antioxidant activity (IC50 values of .mchgt.100 mg/mL) in a DPPH radical
scavenging assay.
Bibliographic
Information
Synthesis and
simple purification of 9,10-dihydro-9,10-ethanoanthracene-11-carboxylic acid
methyl ester. Phutdhawong, Weerachai; Tongban, Sukij; Buddhasukh,
Duang. Department of Chemistry, Faculty
of Science, Mae Jo University, Chiang Mai,
Thailand. ACGC Chemical
Research Communications (2002), 15 2-5. Publisher: Asian Coordinating Group for
Chemistry, CODEN: ACRCFA ISSN: 1020-5586. Journal
written in English. CAN 139:100916 AN 2003:237533 CAPLUS
(Copyright (C) 2008 ACS on SciFinder (R))
Abstract
A
simple purifn. method was developed to give the title compd. in high yield. The technique is simple, economical and
minimizes org. solvent requirements.
Bibliographic
Information
Synthesis of (± )-epipentenomycin I and III.
Phutdhawong, Weerachai; Pyne, Stephen G.; Baramee,
Apiwat; Buddhasukh, Duang; Skelton, Brian W.; White, Allan H. Department of Chemistry, Mae Jo University, Chiang Mai,
Thailand. Tetrahedron
Letters (2002), 43(34),
6047-6049. Publisher: Elsevier
Science Ltd., CODEN: TELEAY ISSN: 0040-4039. Journal
written in English. CAN 137:337704 AN 2002:586159 CAPLUS
(Copyright (C) 2008 ACS on SciFinder (R))
Abstract
A synthesis of (±)-epipentenomycin I (I; R = H) and
III (I; R = Ac) is reported from a regioselective epoxidn. of racemic 3-hydroxy-
and 3-acetoxy-2-methylene-4-cyclopentenone, resp., with dimethyldioxirane
followed by hydrolytic ring-opening of the resulting epoxide.
Bibliographic
Information
Volatile
components from Cephalotaxus griffithii growing in northern Thailand.
Phutdhawong, Weerachai; Korth, John; Buddhasukh,
Duang; Pyne, Stephen G. Department of
Chemistry, Mae Jo University, Chiang Mai,
Thailand. Flavour and Fragrance
Journal (2002), 17(2),
153-155. Publisher: John Wiley &
Sons Ltd., CODEN: FFJOED ISSN: 0882-5734. Journal
written in English. CAN 137:60280 AN 2002:274604 CAPLUS
(Copyright (C) 2008 ACS on SciFinder (R))
Abstract
Capillary
gas chromatog. (GC-FID) and mass spectrometry (GC-MS) were used to analyze the
chem. compn. of the essential oil of Cephalotaxus griffithii, collected in
remote northern Thailand. GC-MS data and
retention indexes were used to identify 22 components in the hydrodistn. oil, with
a-pinene
(58.50%), caryophyllene (11.67%), b-pinene (4.19%), myrcene (3.46%)
and limonene (3.10%) as the major components.
Bibliographic
Information
Electrocoagulation
and subsequent recovery of phenolic compounds.
Phutdhawong, Weerachai; Chowwanapoonpohn, Sombat;
Buddhasukh, Duang. Department of
Chemistry, Faculty of Science, Chiang
Mai University, Thailand. Analytical Sciences (2000),
16(10), 1083-1084. Publisher: Japan Society for Analytical
Chemistry, CODEN: ANSCEN ISSN: 0910-6340. Journal
written in English. CAN 133:358694 AN 2000:776597 CAPLUS
(Copyright (C) 2008 ACS on SciFinder (R))
Abstract
Electrocoagulation
has proved to be quite useful and practical in many operations that constitute
the elimination of certain unwanted particles or chem. species from an aq. soln. The authors showed that the method can also
be applied to some phenolic compds. In
addn., there is a degree of selectivity in this kind of pptn. among these
compds. Moreover, the pptd. compds. can
be recovered quite satisfactorily by a simple method.
Bibliographic
Information
Simple isolation
and purification of D-pinitol from Cassia siamea lamk by electrolytic
decolorization. Phutdhawong, W.; Buddhasukh, D. Department of Chemistry, Maejo University, Chiang Mai,
Thailand. ACGC Chemical
Research Communications (2000), 10 61-62. Publisher: Asian Coordinating Group for
Chemistry, CODEN: ACRCFA ISSN: 1020-5586. Journal
written in English. CAN 133:293073 AN 2000:415941 CAPLUS
(Copyright (C) 2008 ACS on SciFinder (R))
Abstract
D-Pinitol
(1D-3-O-methyl-chiro-inositol), was isolated from Cassia siamea Lamk by a
simple process in three main steps, namely hot water extn., decolorization by
electrolysis, and simultaneous decolorization and demineralization by ion
exchange. D-pinitol was obtained in 1%
yield.
Bibliographic
Information
Simple isolation
and purification of glycyrrhizic acid. Phutdhawong,
Weerachai; Buddhasukh, Duang. Department
of Chemistry, Maejo University, Chiang Mai,
Thailand. Journal of the
Science Faculty of Chiang Mai University
(1998), 25(2), 87-91.
Publisher: Chiang Mai University, Faculty of Science, CODEN: JSFUD9
ISSN: 0125-2526. Journal written in English. CAN 131:78237 AN 1999:285331 CAPLUS
(Copyright (C) 2008 ACS on SciFinder (R))
Abstract
Glycyrrhizic
acid, a sweet-tasting glycoside, was obtained from Glycyrrhiza radix (licorice). In this expt., glycyrrhizic acid was isolated
in 2.1% yield from Glycyrrhiza in 3 main steps, hot water extn., decolorization
by electrolysis, and simultaneous decolorization and demineralization by ion
exchange.
Bibliographic Information
Facile microwave-assisted synthesis of 9,10-dihydro-9,10-ethanoanthracene-11-carboxylic
acid methyl ester. Phutdhawong Weerachai; Buddhasukh
Duang Department of Chemistry, Maejo
University, San Sai, Chiang Mai, 50290, Thailand. weerachai@mju.ac.th Molecules (Basel, Switzerland) (2005),
10(11), 1409-12. Journal code: 100964009. E-ISSN:1420-3049. Journal; Article; (JOURNAL ARTICLE); (RESEARCH
SUPPORT, NON-U.S. GOV'T) written in
English. PubMed ID 18007536 AN 2007681246 MEDLINE (Copyright (C) 2008 U.S. National
Library of Medicine on SciFinder (R))
Abstract
A
facile, high yielding synthesis of 9,10-dihydro-9,10-ethano- anthracene-11- carboxylic
acid methyl ester using a modified commercial domestic microwave oven is
reported.
Bibliographic Information
Electrocoagulation of quinone pigments. Chairungsi Neeranuch; Jumpatong Kanlaya; Suebsakwong
Patiwat; Sengpracha Waya; Phutdhawong Weerachai; Buddhasukh Duang Department of Chemistry, Faculty of Science,
Chiang Mai University, Chiang Mai, 50200, Thailand Molecules (Basel, Switzerland) (2006),
11(7), 514-22. Journal code: 100964009. E-ISSN:1420-3049. Journal; Article; (JOURNAL ARTICLE); (RESEARCH
SUPPORT, NON-U.S. GOV'T) written in
English. PubMed ID 17971722 AN 2007647082 MEDLINE (Copyright (C) 2008 U.S. National
Library of Medicine on SciFinder (R))
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 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.
Bibliographic Information
Dechlorophyllation by electrocoagulation. Jumpatong Kanlaya; Phutdhawong Weerachai; Buddhasukh
Duang Department of Chemistry, Faculty
of Science, Chiangmai University, Chiangmai, 50200, Thailand Molecules (Basel, Switzerland) (2006),
11(2), 156-62. Journal code: 100964009. E-ISSN:1420-3049. Journal; Article; (JOURNAL ARTICLE); (RESEARCH
SUPPORT, NON-U.S. GOV'T) written in
English. PubMed ID 17962786 AN 2007637522 MEDLINE (Copyright (C) 2008 U.S. National
Library of Medicine on SciFinder (R))
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 extracts.
Bibliographic Information
Solvent effects in electrocoagulation of
selected plant pigments and tannin. Chairungsi
Neeranuch; Jumpatong Kanlaya; Phutdhawong Weerachai; Buddhasukh Duang Department of Chemistry, Faculty of Science,
Chiangmai University, Chiang Mai, 50200, Thailand Molecules (Basel, Switzerland) (2006),
11(5), 309-17. Journal code: 100964009. E-ISSN:1420-3049. Journal; Article; (JOURNAL ARTICLE); (RESEARCH
SUPPORT, NON-U.S. GOV'T) written in English. PubMed ID 17962762 AN 2007637498 MEDLINE (Copyright (C) 2008 U.S. National
Library of Medicine on SciFinder (R))
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 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.
Bibliographic Information
Microwave-assisted isolation of essential oil
of Cinnamomum iners Reinw. ex Bl.: comparison with conventional
hydrodistillation. Phutdhawong Weerachai; Kawaree Rungthip; Sanjaiya
Samart; Sengpracha Waya; Buddhasukh Duang
Department of Chemistry, Faculty of Science, Maejo University, Sansai, Chiang
Mai 50290, Thailand. weerachai@mju.ac.th Molecules (Basel, Switzerland) (2007),
12(4), 868-77. Journal code: 100964009. E-ISSN:1420-3049. Journal; Article; (JOURNAL ARTICLE); (RESEARCH
SUPPORT, NON-U.S. GOV'T) written in
English. PubMed ID 17851439 AN 2007536787 MEDLINE (Copyright (C) 2008 U.S. National
Library of Medicine on SciFinder (R))
Abstract
Microwave-assisted
hydrodistillation was used to isolate an essential oil from the leaves of
Cinnamomum iners Reinw. ex Bl., and the results compared with those obtained by
conventional hydrodistillation. The
composition of the oil from both methods was found to be similar, and (-)-linalool
was found as the main component (30-50%).
The antioxidant activity of the essential oil obtained by both methods
was evaluated using DPPH, ABTS, FRAP and lipid peroxidation methods, all of
which indicated the same but insignificant activity.
International congress
1. W. Phutdhawong, and D. Buddhasukh, ‘Simple Isolation and
Purification of Glycyrrhizin’, UNESCO International Seminar on the Chemistry
of Natural Products, 1998, pp-3
2. W. Phutdhawong, and D. Buddhasukh, ‘Simple Isolation and
Purification of Inositol Derivative from Cassia siamea Britt’, The Fourth
Princess Chulabhorn International Science Congress, 1999, p 182
3. W. Phutdhawong, J. Korth, D. Buddhasukh and S. G. Pyne,
‘Volatile Components from Cephalotaxus Griffithii’, World Chemistry Congress
2001, Brisbane, Australia, 2001, pp 558.
4. W. Phutdhawong, D. Buddhasukh, ‘Synthesis of Pentenomycins’,
International Conferenc & Exhibition on Pure and Appplied Chemistry
2002 (PACCON 2002), BKK, Thailand, 2002
5. W. Phutdhawong, S. G. Pyne, ‘Synthesis of Epipentenomycins’,
Cornforth Foundation for Chemistry Symposium, 30th September and 1st October
2002, University of Sydney, Australia
6. S. Chewchanwuttiwong, R. Kawaree, W.Phutdhawong and D.
Buddhasukh, ‘Antioxidant Activity Study and Volatile Components
of Ocimum basilicum L.,Melodorum fruticosum L. and Michelia champaca L.’,
The 3rd World Congress on Medicinal and Aromatic Plants for Human Welfare,
3-7 Feburary 2003, Chiang Mai, Thailand. pp.372
7. A. Donchai, W. Phutdhawong and D. Buddhasukh, ‘Investigation
of Chemical Companents and Biological Activity of Volatile Oils of Streblus
asper Lour., Acanthopanax trifoliatum Merr. and Ployscias feuticosa
Harms.’, The 3rd World Congress on Medicinal and Aromatic Plants for Human
Welfare, 3-7 Feburary 2003, Chiang Mai, Thailand. pp373
(PP03-52)
National congress
1. W. Phutdhawong, P. A. Fox, and A. Baramee, ‘Preparation
Development of n-butyllithium’, 24th Congress on Science and Technology
of Thailand, 1998, p 100-101.
2. W. Phutdhawong, and D. Buddhasukh, ‘Studies on Electrolytic
Decolourization of Dye Solutions’, 25th Congress on Science and Technology
of Thailand, 1999, p 244-245.
3. S. Ararmrueng, A. Baramee, and W. Phutdhawong, ‘Determination
of some Diasteriomer by Low Resolution 1H-NMR’, 25th Congress on Science
and Technology of Thailand, 1999, p 1118-1119.
4. S. Ararmrueng, D. Buddhasukh, and W. Phutdhawong, ‘NMR
tube washer’, 26th Congress on Science and Technology of Thailand, 1999,
p 1118-1119.
5. S. Kanjanawong, D. Buddhaskh and W. Phutdhawong,
‘An inexpensive water aspirator pump, application for rotavapor’, 27th
Congress on Science and Technology of Thailand, 16-18 October
2001, Lee Gardens Plaza Hotel, Hat Yai, Songkla, Thailand
pp.796 (17-23P-07)
6. W. Phutdhawong and S. G. Pyne, ‘ Synthesis of (?)epipentenomycin
I and III’, 29th Congress on Science and Technology of Thailand,
20-22 October 2003, Golden Jubilee ConventionHall, Khon Kean University,
Khon Kean, Thailand pp.118 (SC94 O)
7. S. Chowwanapoonpohn, P. Tongoen and W. Phutdhawong, ‘ Study
of certain commercial dyes treatment from aqueous solution by non-electrolyte
electrocoagulation technique (ec)’, 29th Congress on Science and
Technology of Thailand, 20-22 October 2003, Golden Jubilee ConventionHall,
Khon Kean University, Khon Kean, Thailand pp.119 (SC99 P)
8. A. Boonrod and W. Phutdhawong, ‘Synthesis of 9, 10-Dihydro-9,
10-ethanoanthracene-11-carboxylic acid using microwave technology’, 29th
Congress on Science and Technology of Thailand, 20-22 October
2003, Golden Jubilee ConventionHall, Khon Kean University, Khon
Kean, Thailand pp.120 (SC104 P)
9. J. Sujarit and W. Phutdhawong, ‘Synthesis of Zinc Diethyldithiocarbamate
(ZDEC) and structure characterization using decoupling 1H NMR’, 29th Congress
on Science and Technology of Thailand, 20-22 October 2003, Golden
Jubilee ConventionHall, Khon Kean University, Khon Kean, Thailand
pp.120 (SC105 P)
10. S. Komkham, W. Phutdhawong and S. Chowwanapoonpohn, ‘Isolation of
Organic matter in aqueous-extract from the bark of harrisonia perforta
by Electrocoagulation and recovery tecnique’, 29th Congress on Science
and Technology of Thailand, 20-22 October 2003, Golden Jubilee ConventionHall,
Khon Kean University, Khon Kean, Thailand pp.121 (SC106 P)
11. S. Kamraithong, W. Phutdhawong and S. Chowwanapoonpohn, ‘Isolation
of tannins from the bark of Knema lenta Warb. by Electrocoagulation and
recovery tecnique’, 29th Congress on Science and Technology of Thailand,
20-22 October 2003, Golden Jubilee ConventionHall, Khon Kean University,
Khon Kean, Thailand pp.121 (SC108 P)
12. S. Kaewkong, W. Phutdhawong, N. Chokthaworn and D. Supyen, ‘GC-MS
analysis of fatty acids in Thai durian texture’, 29th Congress on
Science and Technology of Thailand, 20-22 October 2003, Golden Jubilee
ConventionHall, Khon Kean University, Khon Kean, Thailand
pp.119 (SC95 P)
13. S. Aramrueng, D. Supyen and W. Phutdhawong, ‘The estimation
of enol contents in a ketone by proton nuclear magnetic resonance spectroscopy’,
29th Congress on Science and Technology of Thailand, 20-22
October 2003, Golden Jubilee ConventionHall, Khon Kean University,
Khon Kean, Thailand pp.122 (SC110 P)
14. J. Pomjaturas, N. Chokthaworn, D. Supyen, W. Phutdhawong and
P. Koonanuwatchaidet, ‘Determination of Cholesterol levels in some Thai
desserts’, 29th Congress on Science and Technology of Thailand,
20-22 October 2003, Golden Jubilee ConventionHall, Khon Kean University,
Khon Kean, Thailand pp.34 (SB88 P)