Purification of extracellular lipases from Trichosporon fermentans WU-C12

Jiacong Chen, Susumu Shimura, Kohtaro Kirimura, Shoji Usami

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Two types of extracellular lipases (I and II) from Trichosporon fermentans WU-C12 were purified by acetone precipitation and successive chromatographies on Butyl-Toyopearl 650 M, Toyopearl HW-55F and Q-Sepharose FF. The molecular weight of lipase I was 53 kDa by SDS-polyacrylamide gel electrophoresis (SDS-PAGE) and 160 kDa by gel filtration, while that of lipase II was 55 kDa by SDS-PAGE and 60 kDa by gel filtration. For the hydrolysis of olive oil, the optimum pH and temperature of both the lipases were 5.5 and 35°C, respectively. The lipases showed stable activities after incubation at 30°C for 24 h in a pH range from 4.0 to 8.0. The thermostability of lipase I for 30 min at a reaction pH of 5.5 was up to 40°C, while that of lipase II under the same conditions was up to 50°C. Both lipases could hydrolyze the 1-, 2-, and 3-positions of triolein, and cleave all three ester bonds, regardless of the position in the triglyceride.

Original languageEnglish
Pages (from-to)548-550
Number of pages3
JournalJournal of Fermentation and Bioengineering
Volume77
Issue number5
DOIs
Publication statusPublished - 1994

ASJC Scopus subject areas

  • Biotechnology
  • Applied Microbiology and Biotechnology

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