Being an agricultural product, the properties of crude Jatropha Curcas oil (CJCO) and the biodiesel produced from CJCO are region specific. In this work studies were carried out to produce biodiesel from crude Jatropha Curcas oil with a having high free fatty acid contents (6.85%) obtained from rural areas within India. Due its high free fatty acid content, the crude Jatropha Curcas oil was pro...

A 516-bp winged bean chymotrypsin-trypsin inhibitor (WbCTI) gene was amplified from genomic DNA and cDNA isolated from winged bean using a pair of degenerate primers designed on the basis of the amino acid sequences of WbCTI. The amplified PCR products were cloned and sequenced to confirm their authenticity. DNA sequence analysis of the genomic and cDNA clones of WbCTI revealed the same nucleot...

The use of pyridine-2-amidoxime (pyaoxH2) in Ni chemistry has provided access to a dodecanuclear complex and a hexadecanuclear Ni cluster, namely [Ni12(pyaox)6(pyaoxH)6(MeOH)2Cl2]Cl4·5MeOH (1·5MeOH) and [Ni16(pyaox)8(pyaoxH)8(MeOH)4](SO4)4·10H2O·26MeOH (2·10H2O·26MeOH). Complex 1·5MeOH was isolated by the reaction of NiCl2·6H2O, pyaoxH2 and NaOMe in a 1 : 1 : 2 molar ratio in MeOH in 60% yield....

This research focuses on the production of biodiesel from low cost feedstock such as Melothria madraspatana seed oil via MnCO3 catalyzed transesterification process at 60°C, investigating the effects of process parameters such as molar ratio of feedstock to methanol, catalyst quantity, and reaction time on biodiesel yield. The biodiesel was successfully produced via transesterification process ...

3-azidiamantane (DIA-N2) has been shown to be a photolabile carbene-generating probe interacting specifically with cytochrome P450 (P450) active centre. To evaluate the modification of P450 by the probe, radiolabelled [9-3H]-3-azidiamantane was prepared by reductive dehalogenation of its precursor, 3-oxo-9-bromodiamantane ethylene ketal. The synthesis was optimized as the proper precursor and r...

BACKGROUND Waxes are esters of long-chain fatty acids and long-chain alcohols. Their principal natural sources are animals (sperm whale oil) and vegetables (jojoba) which are expensive and not easily available. Wax esters synthesized by enzymatic transesterification, using palm stearin as raw material, can be considered as an alternative to natural ones. RESULTS Palm stearin is a solid fracti...

Most substrate for esterification has the inherent problem of low miscibility which requires addition of solvents into the reaction media. In this contribution, we would like to present an alternative and feasible option for an efficient solvent-free synthesis of menthyl butyrate using a novel thermostable crude T1 lipase. We investigated the effects of incubation time, temperature, enzyme load...

BaSO4 fibres with morphological complexity were formed in aqueous solution with polyacrylate and partially monophosphonated poly(ethyleneoxide)-block-poly(methacrylic acid) additives by a simple precipitation reaction. For polyacrylate, formation of the fibrous deposits was strongly dependent on the level of supersaturation (S) and Ba2+:polymer molar ratio (R). At S = 60 to 80, and R = 3 to 14,...

1,3-propanediol (1,3-PD) is an important chemical material and can be used as monomer to produce polyesters, polyethers and polyurethanes. Its biosynthetic method arouses our more and more interests. In this study, 1,3-PD was produced from crude glycerol through the fermentation of a Klebsieblla sp. ZH-1 strain isolated from a anaerobic sludge collected in Fenhe river. The fermentation conditio...

A morpholine alkaline basic ionic liquid (IL) 1-butyl-3-methyl morpholine hydroxide ([Hnmm]OH) was synthesized and characterized by ¹H NMR and FT-IR. [Hnmm]OH is highly active in catalyzing the synthesis of biodiesel from the reaction of methanol with soybean oil. The influence of the reaction conditions, including the [Hnmm]OH catalyst amount, the molar ratio of methanol to soybean oil, reacti...