Biodiversitas Journal of Biological Diversity
Vol. 19 No. 1 (2018)

Lipolytic bacteria isolated from Indonesian sticky rice cake wajik and jenang experiencing with rancidity

ARI SUSILOWATI (Department of Biology, Faculty of Mathematics and Natural Sciences, Universita Sebelas Maret. Jl. Ir. Sutami 36A Surakarta 57 126, Central Java, Indonesia)
SITI LUSI ARUM SARI (Department of Biology, Faculty of Mathematics and Natural Sciences, Universita Sebelas Maret. Jl. Ir. Sutami 36A Surakarta 57 126, Central Java, Indonesia)
RATNA SETYANINGSIH (Department of Biology, Faculty of Mathematics and Natural Sciences, Universita Sebelas Maret. Jl. Ir. Sutami 36A Surakarta 57 126, Central Java, Indonesia)
HANI’A NUR MUTHMAINNA (Department of Biology, Faculty of Mathematics and Natural Sciences, Universita Sebelas Maret. Jl. Ir. Sutami 36A Surakarta 57 126, Central Java, Indonesia)
HAYYU HANDARWATI (Department of Biology, Faculty of Mathematics and Natural Sciences, Universita Sebelas Maret. Jl. Ir. Sutami 36A Surakarta 57 126, Central Java, Indonesia)
ARTINI PANGASTUTI (Department of Biology, Faculty of Mathematics and Natural Sciences, Universita Sebelas Maret. Jl. Ir. Sutami 36A Surakarta 57 126, Central Java, Indonesia)
TJAHJADI PURWOKO (Department of Biology, Faculty of Mathematics and Natural Sciences, Universita Sebelas Maret. Jl. Ir. Sutami 36A Surakarta 57 126, Central Java, Indonesia)



Article Info

Publish Date
01 Jan 2018

Abstract

Susilowati A, Sari SLA, Setyaningsih R, Muthmainna HN, Handarwati H, Pangastuti A, Purwoko T. 2018. Lipolytic bacteria isolated from Indonesian sticky rice cake wajik and jenang experiencing with rancidity. Biodiversitas 19: 351-356. Lipolytic bacteria are lipase producing bacteria. These bacteria can be isolated from various sources such as vegetable oil wastes, industrial dairy products, oil-contaminated soil, seeds, and foods containing fat. The lipolytic bacteria were isolated from wajik, jenang manten and jenang alot that have been cultured for 4-35 days using minimum media containing MgSO4.7H2O 0.03%, K2HPO4 0.005%, (NH4) SO40.5% (w/v) supplemented with olive oil as a carbon source. Lipolytic activity was marked by orange luminescence when it was exposed to UV light at 350 nm on colonies grown on media containing olive oil-rhodamine B. Lipolytic bacteria were identified based on colony morphology, cell morphology and sequences of 16S rRNA gene. The 16S rRNA gene sequences were analyzed to determine the identity of bacterial isolates based on the percentage of sequence identity using BLAST Nucleotide software on NCBI website. Results showed there were 7 lipolytic bacteria of 52 isolates. Those bacteria were Gram-negative with spherical and rods shape. The identity of four isolates obtained in wajik indicated 97-98% of similarity to Acinetobacter and one isolate showed 96% of similarity to Pseudomonas. The last two isolates obtained from jenang manten had 99% similarity belonging to the species of Serratia marcescens.

Copyrights © 2018






Journal Info

Abbrev

biodiv

Publisher

Subject

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

Description

The Biodiversitas Journal was first published in 2000 by the Department of Biology, FMNS, Universitas Sebelas Maret, Surakarta, Indonesia, then in 2006 it was co-published by the Society for Indonesian Biodiversity and that department; since 2017 it was also hosted by Smujo. From 2003-2012 it was ...