Wafti, Nur Sulihatimarsyila Abd; Yunus, Robiah; Lau, Harrison Lik Nang; Yaw, Thomas Choong Shean; Aziz, Suraini Abdul published the artcile< Immobilized lipase-catalyzed transesterification for synthesis of biolubricant from palm oil methyl ester and trimethylolpropane>, COA of Formula: C19H34O2, the main research area is Biocatalysts; Enzyme; Palm oil; Physicochemical; Polyol esters.
Abstract: The present study reports the effects of three com. immobilized lipases namely Novozyme 435 from Candida antarctica lipase B (CALB), Lipozyme TL IM from Thermomyces lanuginosus and Lipozyme RM IM from Rhizomucor miehei on the production of trimethylolpropane (TMP) ester from high oleic palm Me ester (HO-PME) and TMP. The TMP ester is a promising base oil for biolubricants that are easily biodegradable and non-toxic to humans and the environment. Enzymic catalysts are insensitive to free fatty acid (FFA) content, hence able to mitigate the side reactions and consequently reduce product separation cost. The potential of these enzymes to produce TMP ester in a solvent-free medium was screened at various reaction time (8, 23, 30 and 48 h), operating pressure (0.1, 0.3 and 1.0 mbar) and enzyme dosage (1, 3, 5 and 10% weight/weight). The reaction was conducted at a constant temperature of 70 °C and a molar ratio of 3.9:1 (HO-PME: TMP). Novozyme 435 produced the highest yield of TMP ester of 95.68 ± 3.60% under the following conditions: 23 h reaction time, 0.1 mbar operating pressure and 5% weight/weight of enzyme dosage. The key lubrication properties of the produced TMP ester are viscosity index (208 ± 2), pour point (- 30 ± – 2 °C), cloud point (- 15 ± – 2 °C), onset thermal degradation temperature (427.8 °C), and oxidation stability, RPVOT (42 ± 4 min). The properties of the TMP ester produced from the enzymic transesterification are comparable to other vegetable oil-based biolubricants produced by chem. transesterification.
Bioprocess and Biosystems Engineering published new progress about 112-63-0. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, COA of Formula: C19H34O2.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics