IDENTIFICATION AND ESTIMATION OF NON-PERMITTED FOOD COLOURS (METANIL YELLOW AND ANILINE DYES) IN TURMERIC POWDER BY RAPID COLOR TEST AND THIN LAYER CHROMATOGRAPHY

2017 ◽  
pp. 2034-2045
Author(s):  
Ritika Shah
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Color Test ◽  
Metanil Yellow ◽  
Layer Chromatography ◽  
Food Colours ◽  
Aniline Dyes

Thin-layer Chromatography of Some Food Colours on Silica Gel

Nature ◽  
1963 ◽  
Vol 199 (4891) ◽  
pp. 372-373 ◽  
Author(s):  
J. F. BARRETT ◽  
A. J. RYAN
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Silica Gel ◽  
Layer Chromatography ◽  
Food Colours

scholarly journals ISOLASI DAN IDENTIFIKASI SENYAWA FLAVONOID DARI EKSTRAK ETANOL BUAH BELIMBING WULUH (Averrhoa bilimbi L.) DENGAN METODE SPEKTROFOTOMETRI UV-VIS

2015 ◽  
Vol 1 (1) ◽  
pp. 22-34
Author(s):  
Siti Hamdanah ◽  
Syariful Anam ◽  
Jamaluddin Jamaluddin
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Shift Reagent ◽  
Flavonoid Compound ◽  
Polyphenolic Compound ◽  
Color Test ◽  
Oh Groups ◽  
Star Fruit ◽  
Acetic Acid Water ◽  
Layer Chromatography

Star fruits (Averrhoa bilimbi L.) from family of oxalidaceae is a plant which has potential as an antibacterial Staphylococcus aureus and Escherichia coli. Flavonoid are the active compounds from the extract of star fruit which has potential as an antibacterial. Star fruit were extracting by ethanol 96 % using maceration. Extract were identified using thin layer chromatography (TLC) with eluent analytic n-butanol- glacial acetic acid- water (6:1:3). Preparative isolation using thin layer chromatography resulting three bands. Each band was centrifuged to obtain isolates. Physics isolates were analyzing using spectrophotometer UV Vis and chemically using color test (shift reagent). UV Vis spectrum results with shift reagent from isolates 1, suspected as isoflavone compound with OH groups in position 6,7,4 and OH groups in O- ring A, in isolates 2 was not flavonoid compound and predicted as other polyphenolic compound and in isolates 3 suspected of flavone compound with OH groups in position 5,6,7 and OH groups in O-ring A

scholarly journals Isolation and identification of flavonoid compounds from Curcuma’s rhizome (Curcuma aeruginosa Roxb.)

2005 ◽  
Vol 3 (1) ◽  
pp. 32-38
Author(s):  
KHOIRINA DWI NUGRAHANINGTYAS ◽  
SABIRIN MATSJEH ◽  
TUTIK DWI WAHYUNI
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Column Chromatography ◽  
Color Test ◽  
Isolation And Identification ◽  
Single Fraction ◽  
Flavonoid Compounds ◽  
Soxhlet Method ◽  
Layer Chromatography ◽  
Test Result

This research was aimed to isolate and identify the flavonoid compounds from curcuma’ rhizome (Curcuma aeruginosa Roxb: Zingiberaceae). The extraction was carried out by Soxhlet method using petroleum eter, chloroform, nbutanol and methanol as the solvent agent. Those extract then qualitatively tested to identify the presence of flavonoid. Flavonoid then isolated from the extract of petroleum eter by column chromatography. The fraction resulted from chromatographic was analyzed by thin layer chromatography (TLC) method. Flavonoid identification was tested by color test, spectrophotometer UV-Vis, IR and GC-MS. The color test result showed that extract of petroleum eter, chloroform and n-butanol contain flavonoid. The analyzed single fraction from column chromatography showed that f2 contains isoflavone with 2 methoxy and 1 ethyl substitutes, f4 contains isoflavone with 2 methoxy substitutes, then f9 contains isoflavone with 1 hydroxy and 2 methoxy substitutes.

Thin-Layer Chromatography

1965 ◽  
Author(s):  
H. R. Bolliger ◽  
M. Brenner ◽  
H. Gänshirt ◽  
Helmut K. Mangold ◽  
H. Seiler ◽  
...  
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Layer Chromatography

THE LESS-POLAR METABOLITES PRODUCED BY INCUBATION OF TESTOSTERONE-4-14C WITH RAT AND BOVINE BRAIN

1969 ◽  
Vol 61 (4) ◽  
pp. 641-648 ◽  
Author(s):  
Leon J. Sholiton ◽  
Emile E. Werk
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Paper Chromatography ◽  
Specific Activity ◽  
Bovine Brain ◽  
Polar Fraction ◽  
End Products ◽  
Polar Metabolites ◽  
Layer Chromatography ◽  
Constant Specific Activity

ABSTRACT Rat and bovine brain have been incubated with testosterone-4-14C under standard conditions. With use of paper chromatography, the extracted metabolites were noted to fall into less-polar, iso-polar, and more polar fractions. The components of the less-polar fraction were separated by acetylation and thin-layer chromatography and the major end-products identified by recrystallization to constant specific activity or constant 3H/14C ratios. Androst-4-enedione and 5α-dihydrotestosterone were formed consistently under the conditions utilized. Trace amounts of other less-polar metabolites were noted occasionally.

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