𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Determination of lawsone in henna powders by high performance thin layer chromatography

✍ Scribed by Nagwa S. El-Shaer; Jihan M. Badr; Maha A. Aboul-Ela; Yousry M. Gohar

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
337 KB
Volume
30
Category
Article
ISSN
1615-9306

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The lawsone content has been evaluated quantitatively in eight commercial henna powders and two collected henna leaves. The phenolic, chloroform‐soluble fraction of the majority of the examined samples showed the presence of lawsone and two other pigments. Here we aimed to optimize high performance thin layer chromatography for the determination of lawsone. Upon using the optimized method the examined samples showed considerable variation in lawsone concentration ranging from 0.004 up to 0.608 wt%, indicating that some samples were almost devoid of lawsone. Some of these products were subjected to preliminary in vivo toxicity studies.

πŸ“œ SIMILAR VOLUMES

Quantitative determination of haloperido
Quantitative determination of haloperidol in tablets by high performance thin-layer chromatography
✍ Sigrid Mennickent; Loreto Pino; Mario Vega; Carmen Gloria Godoy; Marta de Diego πŸ“‚ Article πŸ“… 2007 πŸ› John Wiley and Sons 🌐 English βš– 482 KB πŸ‘ 1 views

## Abstract A densitometric high performance thin‐layer chromatography (HPTLC) method was developed and validated for the quantitative analysis of haloperidol in tablets. Chromatographic separation was achieved on precoated silica gel F 254 HPTLC plates using a mixture of acetone/chloroform/__n__‐b

Quantitative determination of fluoxetine
Quantitative determination of fluoxetine in human serum by high performance thin layer chromatography
✍ Sigrid Mennickent; Ricardo Fierro; Mario Vega; Marta De Diego; C. Gloria Godoy πŸ“‚ Article πŸ“… 2010 πŸ› John Wiley and Sons 🌐 English βš– 131 KB

## Abstract A high performance thin layer chromatographic method was developed and validated for the quantification of fluoxetine in human serum. Fluoxetine was extracted by liquid–liquid extraction method with diethyl ether as extraction solvent. Imipramine was used as internal standard. The chrom

In-product jojoba determination using an
In-product jojoba determination using anticircular high performance thin layer chromatography
✍ Studer, A. ;Traitler, H. πŸ“‚ Article πŸ“… 1985 πŸ› John Wiley and Sons 🌐 English βš– 227 KB πŸ‘ 1 views

Cosmetic creams were anz.,,zed . Jr the.. content of jojoba wax and shea fat using anticircular HPTLC, a fast, precise, and reliable method. After optimization of the solvent system (petrol ether/diethyl ether) for the separation of jojoba wax and shea fat, the spots were visualized with phosphomoly