Production of bacterial cellulose by Gluconacetobacter hansenii CGMCC 3917 using only waste beer yeast as nutrient source

Lin, Dehui, Lopez-Sanchez, Patricia, Li, Rui and Li, Zhixi (2014) Production of bacterial cellulose by Gluconacetobacter hansenii CGMCC 3917 using only waste beer yeast as nutrient source. Bioresource Technology, 151 113-119. doi:10.1016/j.biortech.2013.10.052


Author Lin, Dehui
Lopez-Sanchez, Patricia
Li, Rui
Li, Zhixi
Title Production of bacterial cellulose by Gluconacetobacter hansenii CGMCC 3917 using only waste beer yeast as nutrient source
Formatted title
Production of bacterial cellulose by Gluconacetobacter hansenii CGMCC 3917 using only waste beer yeast as nutrient source
Journal name Bioresource Technology   Check publisher's open access policy
ISSN 0960-8524
1873-2976
Publication date 2014-01-01
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.biortech.2013.10.052
Volume 151
Start page 113
End page 119
Total pages 7
Place of publication Amsterdam, Netherlands
Publisher Elsevier BV
Language eng
Formatted abstract
In order to improve the use of waste beer yeast (WBY) for bacterial cellulose production by Gluconacetobacter hansenii CGMCC 3917, a two-step pre-treatment was designed. First WBY was treated by 4 methods: 0.1. M NaOH treatment, high speed homogenizer, ultrasonication and microwave treatment followed by hydrolysis (121. °C, 20. min) under mild acid condition (pH 2). The optimal pre-treatment conditions were evaluated by the reducing sugar yield after hydrolysis. 15% WBY treated by ultrasonication for 40. min had the highest reducing sugar yield (29.19%), followed by NaOH treatment (28.98%), high speed homogenizer (13.33%) and microwaves (13.01%). Treated WBY hydrolysates were directly supplied as only nutrient source for BC production. A sugar concentration of 3% WBY hydrolysates treated by ultrasonication gave the highest BC yield (7.02. g/L), almost 6 times as that from untreated WBY (1.21. g/L). Furthermore, the properties of the BC were as good as those obtained from the conventional chemical media.
Keyword Bacterial cellulose
Gluconacetobacter hansenii
Pre-treatment
Property
Waste beer yeast
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Queensland Alliance for Agriculture and Food Innovation
Official 2014 Collection
 
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Created: Tue, 03 Dec 2013, 10:15:16 EST by System User on behalf of Centre for Nutrition and Food Sciences