Influence of cultivation time on xanthan biosynthesis on effluents from white wine production

Abstract

In this study, the influence of cultivation time on xanthan biosynthesis by using Xanthomonascampestris ATCC 13951 on effluents from different stages of white wine production was examined in order to determine the critical bioprocess parameters. The obtained results show that after 96h of cultivation there is no significant change in the concentration of sugar components in all investigated media, and consequently there is no significant production of biopolymer, which indicates that the reduction of cultivation time for 24 h is possible without negative effect on the yield of desired product. It has also been found that the consumption of total nitrogen was noticeably higher in relation to the amount of ammonia and amino compounds, indicating that the wastewaters generated during the white wine production contain other nitrogen components that the applied producing strain can metabolize.

Keywords

• xanthan
• xanthomonascampestris
• winery wastewaters
• cultivation time