Thin-layer chromatography — Direct bioautography for the screening of antimicrobial properties of plant extracts

2013 ◽  
Vol 26 (2) ◽  
pp. 109-113 ◽  
Author(s):  
Wioleta Jesionek ◽  
Edyta Grzelak ◽  
Barbara Majer-Dziedzic ◽  
Irena Choma
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Plant Extracts ◽  
Antimicrobial Properties ◽  
Direct Bioautography ◽  
Layer Chromatography

Thin-Layer Chromatography for Chlorinated Pesticide Residue Analysis without Cleanup

1964 ◽  
Vol 47 (2) ◽  
pp. 306-310
Author(s):  
H V Morley ◽  
M Chiba
Keyword(s):  
Gas Chromatography ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Plant Extracts ◽  
Residue Analysis ◽  
Rapid Screening ◽  
Pesticide Residue Analysis ◽  
Cleanup Procedure ◽  
Layer Chromatography

Abstract Thin-layer chromatography on silica gel may be used for the determination of chlorinated pesticide residues in some plant extracts without prior cleanup, thus eliminating the possible loss of pesticides during the cleanup procedure. Rapid screening of a large number of samples is thus possible with consequent saving of time and labor. When necessary, thin-layer chromatography may be used as a prior cleanup for gas chromatography.

Sodium Methylate Treatment of Cleaned Up Plant Extracts in Confirmation of Some Pesticide Residues By Gas-Liquid and Thin Layer Chromatography

1968 ◽  
Vol 51 (5) ◽  
pp. 1095-1101
Author(s):  
C E Mendoza ◽  
P J Wales ◽  
H A Mcleod ◽  
W P Mckinley
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Plant Extracts ◽  
Pesticide Residues ◽  
Sodium Methylate ◽  
Heptachlor Epoxide ◽  
Rapid Procedure ◽  
Qualitative Confirmation ◽  
Layer Chromatography

Abstract A rapid procedure that involves GLC-EC and TLC analyses of plant extracts 5 min after treatment with sodium methylate is described for the qualitative confirmation of some pesticide residues. Plant extracts are cleaned up by elution through a carboncellulose column before treatment. The compounds studied were aldrin, captan, carbophenothion, p,p'-DDD, de-hydrochlorinated p,p-DDD, p,p'-DDE, o,p -DDT, p,p -DDT, Diazinon, dieldrin, disulfoton, heptachlor, heptachlor epoxide, malathion, methoxychlor, de-hydrochlorinated methoxychlor, mevinphos, and parathion. The pesticides added to beet, lettuce, pineapple, potato, and wheat eluates were reliably confirmed by GLC-EC or TLC after sodium methylate treatment. The procedure could be used to confirm only some of the pesticides added to extracts of apples, carrots, cauliflower, grapes, and peas because of components in these samples that gave interfering peaks

scholarly journals Thin-layer Chromatography of Plant Extracts. IV. Alkaloids.

1966 ◽  
Vol 20 ◽  
pp. 1588-1592 ◽  
Author(s):  
Eskil Hultin ◽  
J. Kärkkäinen ◽  
E. Haahti ◽  
Bengt von Hofsten ◽  
D. H. Williams ◽  
...  
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Plant Extracts ◽  
Layer Chromatography
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