The Extraction Process of Sodium Alginate Aassisted by Ultrasound-Microwave

Abstract:

With the kelp as raw material,2% glutaraldehyde as pre-treatment agent,the optimum process parameters for the soaked kelp by Ultrasound microwave were determined in this manuscript.The optimum conditions were listed as follows: Ultrasonic power 50 W,microwave power 500 W,the processing time 60 s,liquid ratio 1∶20,extraction times 2.The optimal extraction conditions in assimilating action were obtained: pH 12,temperature 60 ℃,reaction time 2.5 h,liquid ratio 1∶20.Under the optimum conditions,the extraction rate for sodium alginate was 88.6% and the viscosity was 3670 mPa·S.