Detail publikace

Lactic acid production from waste bread

HUDEČKOVÁ, H. BABÁK, L.

Originální název

Lactic acid production from waste bread

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

Lactic acid is organic acid traditionally used in food and pharmaceutical industries. It has great potential in producing the biodegradable plastics. Polylactic acid (PLA) is alternative to traditional plastics but its large-scale application is limited by high price of lactic acid production. Optimization of fermentation and searching of cheaper raw materials may be useful for reducing costs of production. Food waste offers interesting composition to be a suitable fermentation feed. Mainly bakery waste offers good composition for fermentation. Because of it we tried to use waste bread as raw material for lactic acid production. Traditional lactic acid producers have optimal temperatures of growing and fermenting about 30 to 40˚C. It means that raw material have to be sterilized. Therefore we tried to fermentation with thermotolerant Bacillus coagulans. Its advantage is that grows and ferments at temperatures from 50 to 60 ˚C. The other benefits are simple nutrition requirement and production of high optical pure L-lactic acid. In experiment we used 250 mL of 15% (w/v) bread and water suspension. It was hydrolysed by successive adding of α-amylase (BAN 240L) and glucoamylase (AMG 300L). We chose conditions applicable for both enzymes and optimised hydrolysis. After hydrolysis followed fermentation by Bacillus coagulans.

Klíčová slova

Lactic acid, waste bread, α-amylase, glucoamylase, hydrolysis

Autoři

HUDEČKOVÁ, H.; BABÁK, L.

Rok RIV

2015

Vydáno

10. 12. 2015

Nakladatel

CZECH CHEMICAL SOCIETY SYMPOSIUM SERIES

ISSN

2336-7210

Periodikum

Czech Chemical Society Symposium Series

Ročník

13

Číslo

2

Stát

Česká republika

Strany od

73

Strany do

75

Strany počet

162

URL

http://www.ccsss.cz/index.php/ccsss/index

BibTex

@article{BUT121110,
  author="Helena {Hudečková} and Libor {Babák}",
  title="Lactic acid production from waste bread",
  journal="Czech Chemical Society Symposium Series",
  year="2015",
  volume="13",
  number="2",
  pages="73--75",
  issn="2336-7210",
  url="http://www.ccsss.cz/index.php/ccsss/index"
}