Greenberg and associates (2, 3) in pigeon liver homogenates and was later found in a variety of bacterial species, including Clostridium cylindrosporum (4), Micrococcus aerogenes (5), and others (6). The enzyme has been purified from acetone powders of pigeon liver (7), from Micrococcus aerogenes (6), and from Clostridium cylindrosporum (8, 9). This paper describes the purification of the enzym...

Fresh leaves, stems and roots of Cachrys cristata, were subjected to hydrodistillation and the oils obtained were analyzed by means of GC and GC-MS. Sixty eight constituents were in total identified, with (Z)β-ocimene (44.2% and 30.5%) dominating in leaves and stems oils, while the major metabolite of the roots was found to be p-tolualdehyde (39.6%), followed by (Z)-β-ocimene (15.2%). The micro...

An orange carotenoid from Micrococcus roseus was purified by solvent partitioning followed by column and thin-layer chromatography. Absorption spectra, chromatographic mobility, and partition coefficient suggested that the pigment was echinenone (4-keto-beta-carotene). Reduction yielded a pigment with the spectral and polar properties of isocryptoxanthin (4-hydroxy-beta-carotene), the expected ...

In order to investigate the substrate binding feature of undecaprenyl diphosphate synthase from Micrococcus luteus B-P 26 with respect to farnesyl diphosphate and a reaction intermediate, (Z,E,E)-geranylgeranyl diphosphate, we examined the reactivity of artificial substrate analogs, 3-desmethyl farnesyl diphosphate and 3-desmethyl Z-geranylgeranyl diphosphate, which lack the methyl group at the...

The formation of (E)-3-{2-(2,5-diphenylpyrazolo[1,5-c]pyrimidin-7-yl)hydrazono}indolin-2-ones 3 has been achieved by condensation of equimolar amounts of 7-hydrazino-2,5-diphenylpyrazolo[1,5-c]pyrimidine (1) and isatin (or isatin derivatives) 2 at room temperature. The (E)-products could be isomerized into corresponding the (Z)-3 isomers. Reactions of the latter fused heterocyclic hydrazones to...

Macrocyclic Schiff bases have been synthesized by the condensation of acetyl acetone with semicarbazide hydrochloride and thiosemicarbazide in presence of methanol. Further, their oxovanadium complexes have been synthesized by using vanadium acetylacetone. The structural assignment of these compounds has been made on the basis of MP, TLC, MW determination, conductivities, elemental analysis and...

We examined the antibacterial activities of several types of propolis, including Africanized honey bee green propolis and propolis produced by meliponini bees. The antibacterial activity of green propolis against Micrococcus luteus and Staphylococcus aureus was superior to that of Melipona quadrifasciata and Scaptotrigona sp propolis. Only two samples of propolis (green propolis and Scaptotrigo...

The methyl moiety of ribothymidine in the tRNA of Streptococcus faecalis, Bacillus subtilis, and probably Bacillus cereus is dervied from a 1-carbon folate derivative and not S-adenosylmethionine. Micrococcus luteus (M. lysodeikticus) tRNA appears to be almost devoid of ribothymidine. S. faecalis tRNA lacking ribothymidine can be methylated in vitro with formation of ribothymidine. 5,10-Methyle...

Dasamularista was prepared as per the national formulary to study the effect of container on the production of alcohol and the presence of microorganisms during the process of fermentation. Citraka (Plumbago rosea Linn.) which was one of the ingredient in the drug and subjected to "Sodhana" was also studied. The Citraka was impoverished by 50% with respect to plumbagin as a result of sodhana-pu...

So far, the antibacterial activity of some organic and inorganic compounds has been studied. Barium zirconate titanate [Ba(ZrxTi₁-x)O₃] (x = 0.05) nanoparticle is an example of inorganic materials. In vitro studies have provided evidence for the antibacterial activity of this nanoparticle. In the current study, the nano-powder was synthesized by sol-gel method. X-ray diffraction showed that the...