RESEARCH ARTICLE

Journal of Oil Palm Research Vol. 24 (3) December 2012, p. 1518-1523

A TWO STEP CHEMO-ENZYMATIC METHOD FOR THE SYNTHESIS OF FATTY ACID ASCORBYL ESTERS

KARMEE, Sanjib Kumar*

by mpob_admin
ABSTRACT

Fatty acid vinyl esters were synthesised from the corresponding free fatty acids in 79%-84% yield using Hg (OAc)2/H2SO4 under microwave irradiation. Subsequently, the obtained fatty acid vinyl esters were utilised for the lipase catalysed acylation of vitamin C under microwave heating. Various lipases viz. Pseudomonas cepacia, Porcine pancreatic, Candida rugosa, Mucor miehei, Rhizopus oryzae and Novozyme-435 were screened for the acylation of vitamin C under microwave irradiation. Among these lipases, Novozyme-435 was found to be the best catalyst for this reaction. Five different ascorbyl esters were synthesised in 58%-85% yield in 3 hr using Novozyme-435.

KEYWORDS: , , , ,


* Biocatalysis and Organic Chemistry Group,
Department of Biotechnology,
Julianalaan 136, 2628 BL Delft, The Netherlands.
E-mail: sanjibkarmee@gmail.com

Releated

A BIBLIOMETRIC STUDY ON THE WORLDWIDE RESEARCH PRODUCTIVITY OF SCIENTISTS IN Elaeis guineensis Jacq. AND Elaeis oleifera

This article has the general aim of assessing the worldwide research productivity of Elaeis guineensis Jacq. and Elaeis oleifera or more commonly known as oil palm, as reflected by the literature indexed in the Web of Science (WoS) and Scopus databases. Specifically, the research aims to identify the most productive countries, institutions and authors in this area of […]

by mpob_admin

PHENOL ADSORPTION BY ACTIVATED CARBON OF DIFFERENT FIBRE SIZE DERIVED FROM EMPTY FRUIT BUNCHES

The capacity of empty fruit bunch-based activated carbon for phenol adsorption was studied. Four different particle sizes of activated carbon (AC) (unsieved, > 2, 0.355-1.0 and < 0.15 mm mesh number) were produced by the activation of prepared charcoal with CO2. Activated carbon with particle size greater than 2 mm demonstrated the highest percentage of […]

by mpob_admin