Triterpene compounds like betulin, betulinic acid, erythrodiol, oleanolic acid and lupeol are known for many pharmacological effects. All these substances are found in the outer bark of birch. Apart from its pharmacological effects, birch bark extract can be used to stabilise semisolid systems. Normally, birch bark extract is produced for this purpose by extraction with organic solvents. Employ...

Ceratonia siliqua L. (carob) was found in Mediterranean region and many Arab countries and have many medical uses. The antimicrobial, antioxidant, cytotoxicity and hypoglycemic activities were determined. The extract of organic solvents, n-butanol, ethyl acetate, methanol and chloroform and the water extracts of Ceratonia siliqua leaves were evaluated. The microbial activity of Ceratonia siliqu...

A large proportion of the organic P in soils can occur as scylloinositol phosphates. These compounds are rarely detected elsewhere in nature and remain poorly understood, partly because conventional procedures for their determination are lengthy and erroneous. We report a straightforward procedure for the determination of scylloinositol phosphates in soil extracts using solution 31P nuclear mag...

Concerns over runoff water quality from agricultural lands and construction sites have led to the development of improved erosion control practices, including application of polyacrylamide (PAM). We developed a quick and reliable method for quantifying PAM in soil extracts at low carbon content by using a turbidimetric reagent, Hyamine 1622. Three high-molecular weight anionic PAMs differing in...

Microcos paniculata traditionally known as ‘Kathgua or Fattashi’ in Bangladesh is widely used for the treatment of various ailments including colds ,diarrhea, hepatitis, heat stroke, dyspepsia, wound healing, fever and as an insecticide. Hence, the present study was designed to investigate the antibacterial, toxicity & 4 th instar Culex quinquefasciatus mosquito larvicidal activities of fruit e...

Desulfovitio d&dfUTiCam is an obligately anaerobic organism that can bc grown heterotrophically with sulfate and an organic electron donor or autotrophically with sulfate, hydrogen, and CO* (1). The presence of sulfate is obligatory for growth both with hydrogen and organic electron donors, except in the case of pyruvate (2). During growth, large amounts of sulfide are produced from the sulfate...

The alarming increase in multidrug resistance of pathogenic microorganisms to conventional drugs in recent years has prompted the search for new leads in alternative remedies in natural products. Hence, this study was aimed at evaluating the antimicrobial properties of Phragmanthera capitata, a parasitic mistletoe growing on rubber trees. The in vitro antimicrobial activities of the acetone, me...

Two samples of oak honeydew honey were investigated. Headspace solid-phase microextraction (HS-SPME) combined with GC and GC/MS enabled identification of the most volatile organic headspace compounds being dominated by terpenes(mainly cis- and trans-linalool oxides). The volatile and less-volatile organic composition of the samples was obtained by ultrasonic assisted extraction (USE) with two s...

Although the water-soluble metabolite profile of human mesenchymal stem cells is known, the lipid profile still needs further investigation. In this study, methanol-chloroform was used to extract pid-soluble metabolites and perchloric acid was used to extract water-soluble metabolites. Furthermore, a dual phase extraction method using methanol-chloroform and water was used to obtain both water ...

The Developmental Therapeutics Program (DTP) of the U.S. National Cancer Institute (NCI), at its NCI-Frederick facility, has built perhaps the largest and most diverse natural products screening library in the world for drug discovery. Composed of plant, marine organism and microbial extracts, it currently contains in excess of 230,000 unique materials. From the inception of this program to ide...