Premium
Transesterification of used edible and non‐edible oils to alkyl esters by Aspergillus sp . as a whole cell catalyst
Author(s) -
Prakash Ranjana,
Aulakh Satnam S.
Publication year - 2011
Publication title -
journal of basic microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.58
H-Index - 54
eISSN - 1521-4028
pISSN - 0233-111X
DOI - 10.1002/jobm.201000536
Subject(s) - transesterification , chemistry , organic chemistry , alkyl , biodiesel , catalysis , cottonseed oil , cottonseed , carbon fibers , food science , materials science , composite number , composite material
Aspergillus sp. (MTCC 5436), isolated from contaminated clarified butter was used as a whole cell catalyst for transesterification of oils from different sources. The strain was observed to be tolerant and grow in 90% oil as carbon source. Oils of Jathropa, karanj and spent cottonseed were used as carbon sources in the study. The product, alkyl ester, was characterized and quantified using 1 H‐NMR. The strain was observed to facilitate transesterification in an oil:minimal medium with the ratio of 70:30 resulting in a 98% conversion of oil to ethyl esters within 48 h at 28 °C and 120 rpm. The physico‐chemical characteristics of the ethyl ester (>98%) at 70% oil as carbon source were similar to the standards specified for biodiesel as per standards of American Society for Testing and Materials (ASTM) and Bureau of Indian Standards (BIS), India. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)