Fermentative Production of Dextran using Food Industry Wastes

Dextran is a D-glucose polymer which is produced by Leuconostoc mesenteroides grown in a sucrose-rich media. The organism was obtained from the Persian Type Culture Collection (PTCC) and was transferred in MRS broth medium at 30°C and pH 6.8 for 24 h. After preparation of inoculums, organisms were inoculated into five liquid fermentation media containing either molasses or cheese whey or different combinations of cheese whey and molasses. After certain fermentation period, the produced dextran was separated and dried. Dextran yield was calculated and significant differences in different media were observed. Furthermore, FT-IR analysis was performed and the results showed that there were no significant differences in the produced dextran structures.

Authors:

• Marzieh Moosavi-Nasab
• Mohsen Gavahian
• Ali R. Yousefi
• Hamed Askari

Keywords:

• Dextran
• Leuconostoc mesenteroides
• Molasses
• Whey

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