Ali, A., Azzam, M., Metwally, A., Awad, A. (2009). FUNCTIONAL PROPERTIES OF EXOPOLYSACCHARIDES PRODUCED BY Halomonas eurihalina F2-7 AND Xanthomonas campestris pv. campestris IN SALTED WHEY. Journal of Food and Dairy Sciences, 34(4), 3161-3171. doi: 10.21608/jfds.2009.113446
A. A. Ali; M. A. A. Azzam; A. M. Metwally; A. A. Awad. "FUNCTIONAL PROPERTIES OF EXOPOLYSACCHARIDES PRODUCED BY Halomonas eurihalina F2-7 AND Xanthomonas campestris pv. campestris IN SALTED WHEY". Journal of Food and Dairy Sciences, 34, 4, 2009, 3161-3171. doi: 10.21608/jfds.2009.113446
Ali, A., Azzam, M., Metwally, A., Awad, A. (2009). 'FUNCTIONAL PROPERTIES OF EXOPOLYSACCHARIDES PRODUCED BY Halomonas eurihalina F2-7 AND Xanthomonas campestris pv. campestris IN SALTED WHEY', Journal of Food and Dairy Sciences, 34(4), pp. 3161-3171. doi: 10.21608/jfds.2009.113446
Ali, A., Azzam, M., Metwally, A., Awad, A. FUNCTIONAL PROPERTIES OF EXOPOLYSACCHARIDES PRODUCED BY Halomonas eurihalina F2-7 AND Xanthomonas campestris pv. campestris IN SALTED WHEY. Journal of Food and Dairy Sciences, 2009; 34(4): 3161-3171. doi: 10.21608/jfds.2009.113446
FUNCTIONAL PROPERTIES OF EXOPOLYSACCHARIDES PRODUCED BY Halomonas eurihalina F2-7 AND Xanthomonas campestris pv. campestris IN SALTED WHEY
Dairy Dept., Fac. Of Agric. Cairo Univ., Giza, Egypt.
Abstract
Effect of salted whey medium after optimization as culture medium on the chemical composition and Functional properties of exopolysaccharide produced by Halomonas eurihalina F2-7and Xanthomonas campestrispv. campestris was studied . All polymers (EPSs) extracted from optimized reconstituted salted whey medium (ORSW) had lower contents of carbohydrates (29.34– 23.72%) but, were highly proteins (8.79–12.15%) than synthetic media-EPSs. Considerable quantities of uronic acid and sulfates were detected in Halomonas-EPSs (4.7 - 3.8% and 8.33–17.11%, respectively). All polymers produced viscous solutions with pseudoplastic behavior and emulsified sunflower oil. Aqueous solutions (1%, w/v) of Xanthomonas-EPS, especially, collected from synthetic medium(MM) were highly viscous (97.7cPs) at pH 7 and also were of the highest viscosity (122.4cPs), when heated at 70ºC. The polymers extracted from ORSW medium, especially, Halomonas-EPS had the highest emulsifying activity at pH 3 and 7(80 and 71.25 – E96 respectively) .The most interesting EPSs, was Halomonas-EPS which extracted from ORSW medium, where produced viscous solutions, their viscosity increased from 15.4 to 82.7cPs at pH 3 and also produced stable emulsion (80-E240) till 240 hr at the same pH. These properties makes it potentially useful for various industrial applications.
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