Screening of exopolysaccharide producing bacteria strains

Chee, Mee Teng (2016) Screening of exopolysaccharide producing bacteria strains. [Undergraduate Final Year Project Report] (Submitted)

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This thesis presents a novel improved screening approach in discovering excessive exopolysaccharide producing bacteria strains. Patch isolation method is a rapid screening technique to reveal exopolysaccharide producing bacteria strains within a short period of time. In the present studies, aniline blue is used as the biological indicator to identify the production activity of exopolysaccharides. Presence of blue colour intensity indicates the production rate of exopolysaccharides. Excessive exopolysaccharide producing bacteria strains can be found in soil microbial communities. Soil bacteria requires carbon source as metabolic needs to produce exopolysaccharides. Table sugar used as the lower cost sugar substrate to grow the isolated bacteria. The rate of carbon source required to produce exopolysaccharides is depends on the types and behaviours of bacterial isolates. To determine whether the carbon source affect the production activity of exopolysaccharides, 1%, 5% and 20% sugar concentration were used as the parameter for cultivation conditions of soil bacterial isolates. The screening bacterial isolates showing positive responses were further to production of exopolysaccharides and the resulting exopolysaccharides were extracted. The extracted exopolysaccharides displayed different characteristics compare to the positive control, Agrobacterium sp. ATCC 31749 and yet to be explored more on the functional properties.

Item Type: Undergraduate Final Year Project Report
Faculty: Faculty of Agro - Based Industry
Depositing User: En. Wahyudi Yusra Zulfin
Date Deposited: 24 Aug 2016 01:42
Last Modified: 13 Feb 2017 06:20
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