@inproceedings{f6f862b1398a4e9792712d4222d46c2a,
title = "Coliform detection in Indonesian Ragi Tapai as an indicator of unhygienic processes using chromogenic media",
abstract = "Coliform bacteria can be used as an indicator for unhygienic conditions related to food processes. Detection of coliform bacteria in Indonesian ragi tapai has been performed using chromogenic media. The chromogenic media were chosen because the reaction is faster and more reliable compared to the conventional media. Fifteen samples of ragi tapai from West Java, Central Java and outside Java region in Indonesia were analyzed for the presence of coliform. The analysis was carried out in Readycult Coliforms (RC) medium using the Presence/Absence test. Incubation temperature was 37 °C for total coliform and 44.5 °C for faecal coliform. The presence of Escherichia coli was confirmed by indole ring formation, fluorescence of medium when exposed to UV light and formation of blue to violet colonies on Chromocult Coliform Agar Enhanced Selectivity (CCA-ES) medium. The positive results showed that from 15 samples, 12 samples (80 %) tested positive for coliform and 3 samples (20 %) tested negative in RC medium. One of 12 samples tested positive for faecal coliform.",
keywords = "Chromogenic media, coliform, presence/absence test, ragi tapai",
author = "Fadhilah, {Q. G.} and I. Santoso and Y. Yasman and Maryanto, {A. E.} and S. Sitaresmi",
note = "Funding Information: This research was supported by the Ministries of Research, Technology and Higher Education Republic of Indonesia of Grant research Penelitian Terapan Unggulan Perguruan Tinggi 2018 (PTUPT 2018) to Drs. Iman Santoso, M.Phil (Number: 476/UN2.R3.1/HKP05.00/2018). The authors are grateful for collaboration with the Center of Excellence for Indigenous Biological Resources-Genome Studies (CoE IBR-GS) FMIPA UI. Publisher Copyright: {\textcopyright} 2019 Author(s).; 4th International Symposium on Current Progress in Mathematics and Sciences 2018, ISCPMS 2018 ; Conference date: 30-10-2018 Through 31-10-2018",
year = "2019",
month = nov,
day = "4",
doi = "10.1063/1.5132508",
language = "English",
series = "AIP Conference Proceedings",
publisher = "American Institute of Physics Inc.",
editor = "Terry Mart and Djoko Triyono and Anggraningrum, {Ivandini T.}",
booktitle = "Proceedings of the 4th International Symposium on Current Progress in Mathematics and Sciences, ISCPMS 2018",
address = "United States",
}