OBJECTIVE To explore the phytochemical constituents from petroleum ether and dichloromethane extracts of Moringa oleifera (M. oleifera) roots using GC/GC-MS. METHODS A total of 5.11 kg fresh and undried crushed root of M. oleifera were cut into small pieces and extracted with petroleum ether and dichloromethane (20 L each) at room temperature for 2 d. The concentrated extracts were subjected ...

background: benzene, toluene, ethyl benzene and xylene compounds (btex) are very dangerous in terms of health and environmental and have high toxicity in aquatic environment. the purpose of this study was to investigate the performance analysis of petroleum hydrocarbons xylene using solar radiation uv/tio2 method in industrial synthetic waste . methods: an experimental-interventional study was ...

2. Comparisons with synthetic 3-hydroxyand 4-hydroxy-pipecolic acids indicated that the isolated imino acid may not be 4-hydroxypipecolic acid, but 3-hydroxypipecolic acid. Strictly identical behaviour of natural and synthetic 3-hydroxypipecolic acid could not be demonstrated since the two substances differed in stereoisomeric composition. 3. 3-Hydroxyand 4-hydroxy-pipecolic acids have been syn...

Background: Plants contain diverse phytochemicals with different solubility levels, depending on their molecular charges and polarity. This study was conducted to examine the effects of three extraction solvents in their pure and aqueous forms: absolute petroleum ether, acetone and ethanol on the phytochemical profile and antioxidant activities of Manihot esculenta leaves extracts. Methods: Th...

Mycocerosic acids of Mycobacterium tuberculosis were studied by gas chromatography–mass spectrometry. Mycobacterial cells were subjected to alkaline hydrolysis and then acidified before being extracted using petroleum ether to collect the acids. Methyl ester, trimethylsilyl and pentafluorobenzyl derivatives of the mycocerosic acids were formed. In the electron impact mode, using selected-ion mo...

The role of thymus in antibody responses to a series of four synthetic polypeptide immunogens of the general formula multi-copoly(Tyr,Glu)-poly(Pro)-poly(Lys) was investigated as a function of the optical activity of the amino acids composing their structure. Irradiated nonthymectomized and thymectomized SJL mice were injected with thymocytes, marrow cells, or a mixture of both. Each group of r...

In this study, the process of separating and analyzing oils from some plant seeds such as Washingtonia tree Silybum marianum(kulgan) Soxhlat apparatus was used in extraction process, where performed using organic solvents (Hexane Petroleum ether). Then appreciation percentage oil these plants. It found that marianum contain a higher than tree. Then, active functional groups were identified (FT-...