Monday, April 30, 2007
6-50
Bacterial cellulose production by Acetobacter xylinum strains from uneconomical agricultural products
Sasithorn Kongruang, Division of Biotechnology, Department of Agro-Industrial Technology, Faculty of Applied Science, King Mongkut’s Institute of Technology North Bangkok, 1518 Pibulsongkram Road, Bangsue, Bangkok, 10800, Thailand
Bacterial cellulose is the biopolysaccharide produced from bacteria , Acetobacter xylinum. Static batch fermentations for bacterial cellulose production were studied in coconut and pineapple juices under 30 °C in a 5 liters fermenter by using 3 Acetobacter strains : Acetobacter xylinum TISTR 998 , Acetobacter xylinum TISTR 975 and Acetobacter xylinum TISTR 893. Experiments were carried out in order to compare the bacterial cellulose yields along with the growth kinetic analysis. Results showed that A. xylinum TISTR 998 produced bacterial cellulose yield equal to 553.33 g/L while A. xylinum TISTR 893 produced 453.33 g/L and A. xylinum TISTR 975 yielded 243.33 g/L. In pineapple juice , the yields for A. xylinum TISTR 893 , 975 and 998 were 576.66 , 546.66 and 520 g/L , respectively . The strain TISTR 998 presented the highest productivity when using the coconut juices. Morphological properties of cellulose pellicles in terms of texture and color were measured. Results revealed that the texture and color were significantly differences (One way Analysis, ANOVA, p<0.001).
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See more of The 29th Symposium on Biotechnology for Fuels and Chemicals (April 29 - May 2, 2007)
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See more of The 29th Symposium on Biotechnology for Fuels and Chemicals (April 29 - May 2, 2007)