Many workers believe that the association between serum cholesterol concentration and ischaemic heart disease is one of cause and effect and it is reported that a 10 % decrease in serum cholesterol is associated with a 27 % reduction in the risk of ischaemic heart disease (Law et al. 1994b) achieved after 5 or more years (Law et al. 1994a). The chief dietary determinants of plasma total cholest...

Many workers believe that the association between serum cholesterol concentration and ischaemic heart disease is one of cause and effect and it is reported that a 10 % decrease in serum cholesterol is associated with a 27 % reduction in the risk of ischaemic heart disease (Law et al. 1994b) achieved after 5 or more years (Law et al. 1994a). The chief dietary determinants of plasma total cholest...

The effects of tribo-conditions and antiwear additives on the degradation of an ester oil in refrigerant have been experimentally evaluated and the degradation products were analyzed. We have used hand-made pin and Vblock apparatus in order to control temperature, load, rotating speed, and environmental gas. The degree of degradation of the ester oil was determined by the amount of sludge on th...

Esters of plant oils are preferred to parent oils if used as fuels in diesel engines because esterification reduces the viscosity of plant oils and makes it comparable to that of diesel. The present work mainly deals with the effect of storage time on the quality of plant oils and their esters with respect to mainly FFA content, viscosity and change in weight. The study was carried out for a pe...

We report the synthesis and characterization of amino acid ester based chiral ionic liquids, derived from L- and D-alanine tert butyl ester chloride. The synthesis was accomplished via an anion metathesis reaction between commercially available L- and D-alanine tert butyl ester chloride using a variety of counterions such as lithium bis (trifluoromethane) sulfonimide, silver nitrate, silver lac...

An interesting observation was found during our continued studies on the hydrolysis of ibuprofen esters by Candida rugosa lipase (CRL). An important role is played by pH in the stereospecific hydrolysis of these esters. The flap region of CRL plays a significant role in the access of the substrate to the active site of the enzyme. At pH 5.6, 48% of the methyl ester and 5% of the butyl ester of ...

In the present research, synthesis of butyl oleate ester from oleic acid and butanol using loofa-immobilized Rhizopus oryzae as a whole cell biocatalyst (LIC) was studied in which hexane was used as the hydrophobic solvent. Decrease of mass transfer limitations as result of the interface formation between the two immiscible substrates, positively affected on the reaction progress (87% as the es...

Homogeneous linear poly(tartrate ester) ligands provide high chemical yields and enantiomeric excesses in the epoxidation of trans-hex-2-en-1-ol using Ti(OPr)4-tert-butyl hydroperoxide. Branched poly(tartrate ester) can be use as heterogeneous ligands in the epoxidation of trans-hex-2-en-1-ol using Ti(OPr)4-tert-butyl hydroperoxide. Removal and recovery of the polymer catalyst is a simple filtr...

We investigated the in vitro metabolism of two (nitrooxy)butyl ester nitric oxide (NO) donor derivatives of flurbiprofen and ferulic acid, [1,1'-biphenyl]-4-acetic acid-2-fluoro-alpha-methyl-4-(nitrooxy)butyl ester (HCT 1026) and 3-(4-hydroxy-3-methoxyphenyl)-2-propenoic acid 4-(nitrooxy)butyl ester (NCX 2057), respectively, in rat blood plasma and liver subcellular fractions compared with (nit...

DGBA 1 Diethylene Glycol n-Butyl Ether Acetate (CAS# 124-17-4) (Synonyms: Butyl carbitol acetate; Butyl diglycol acetate; 2-(2-Butoxyethoxy)ethanol acetate; 2(2-Butoxyethoxy)ethyl acetate; Acetic acid 2-(2-butoxyethoxy)ethyl ester; Butoxyethoxyethyl acetate; Butyl carbitol acetate; Butyl diethylene glycol acetate; Diethyleneglycol monobutyl ether acetate; Diglycol monobutyl ether acetate; Ektas...