Esterification and transesterification of high free fatty acid (FFA) oils to fatty acid alkyl ester (FAAE) by sol-gel entrapped lipase B from Candida antarctica (CalB) and lipase from Burkholderia cepacia were investigated. The optimal conditions for the esterification catalyzed by the immobilized CalB were determined to be 50 °C, 1.7:1 molar ratio of methanol to fatty acid, and 0.36 g of water...

a practical and green method for the synthesis of 5h-dibenzo[b,i]xanthene-tetraones and spiro[dibenzo[b,i]xanthene-13,3'-indoline]-pentaones by the condensation of 2-hydroxynaphthalene-1,4-dione with aldehydes or isatins, respectively, in the presence of a catalytic amount of cellulose sulfuric acid (csa) under solvent-free conditions at 100 °c is described. the significant features of this pro...

Apolipoprotein A-I is the most abundant protein in Cyprinus carpio plasma that plays an important role in lipid transport and protection of the skin by means of its antimicrobial activity. A 527 bp cDNA fragment encoding C terminus part of apoA-I from the skin mucosa of common carp was isolated using RT-PCR. After GenBank database searching, a partial sequence containing a coding sequence (CDS)...

the reaction of barium chloride with 2, 6-pyridinedicarboxylic acid in water led to the formation of a novelpolymeric complex formulated as {[ba2(hpydc)2(pydc)(h20)3].h20.(h2pydc)}.(i). the crystal structure of (i)was characterized by single crystal x-ray diffraction method. the complex was crystallized in the monoclinicsystem with space group p2/c, with four molecule in unit-cell, e.g z=4. the...

dear editor,i read with interest article that published entitled *isolation and identification of bioactive compound producing rhodococcus spp. isolated from soil samples {ijmcm/5(1) (2015) 463-468}* [1]. some of the genus such as nocardia, gordonia, mycobacterium and rhodococcus are in actinomycete family and they are gram-positive and partially acid-fast. rhodococcus species usually stain gra...

Human cells derived from various organs of a single embryo responded variably to polyinosinic-polycytidylic acid with respect to induction of antiviral resistance and interferon.

Ice breakup forecast in the reach of the Yellow River: the support vector machines approach H. Zhou, W. Li, C. Zhang, and J. Liu School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China Received: 21 March 2009 – Accepted: 23 March 2009 – Published: 9 April 2009 Correspondence to: W. Li ([email protected]) Published by Copernicus Publications on behalf o...

give faint yellow crystals, m.p. 235°. It was soluble in NaHCO3 solution and gave brown coloration with FeCl3. Anal. Found: C, 66.76, 66.37; H, 5.44, 5.37. Acetylation of (I)-A mixture of 10g. of (I), 100cc. of Ac2O and 20 drops of conc. H2SO4 was warmed on a water bath for 3hr. and after cooling, the mixture was poured into ice water. Brown precipitates that separated out were treated with MeO...