BioChem - DOS

Lactic acid production by Enteroccocus faecium in liquefied sago starch

AMB Express

Nolasco-Hipolito, Cirilo; Zarrabal, Octavio Carvajal; Kamaldin, Rubena Malfia; Teck-Yee, Ling; Lihan, Samuel; Bujang, Kopli Bin; Nitta, Youji

<P><I>Enterococcus faecium</I> No. 78 (PNCM-BIOTECH 10375) isolated from <I>puto,</I> a type of fermented rice in the Philippines was used to produce lactic acid in repeated batch fermentation mode. Enzymatically liquefied sago starch was used as the sole carbon source, since sago (<I>Metroxylon spp)</I> is a sustainable crop for industrial exploitation. Liquefied sago starch was inoculated with <I>E. faecium</I> to perform the saccharification and fermentation processes simultaneously. Results demonstrated that <I>E. faecium</I> was reused for 11 fermentation cycles with an average lactic acid yield of 36.3 ± 4.71 g/l. The lactic acid production was superior to that of simple batch mode and continuous fermentation in terms of lactic acid concentration. An un-dissociated lactic acid concentration of 1.15 mM affected the productivity of the cells. Work is in progress to maintain and increase the usability of the cells over higher fermentation cycles.</P>

2012

Springer

cc-by

2191-0855

2

1

pp.53-53

10.1186/2191-0855-2-53

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART73723061

https://amb-express.springeropen.com/counter/pdf/10.1186/2191-0855-2-53

Enteroccus faecium; Lactic acid; Repeated batch fermentation; Liquefied sago starch; Cell reuse