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Development of High Purity Purification Method of Chondroitin Sulfate Extracted from Skate Cartilage
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 Title & Authors
Development of High Purity Purification Method of Chondroitin Sulfate Extracted from Skate Cartilage
Jeong, Kap-Seop;
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A purification method was established for high-purity chondroitin sulfate from skate cartilage. Hydrolytic extraction of skate backbone cartilage was investigated with the proteases alcalase and protamex, and the extraction contents of chondroitin sulfate were measured with several physicochemical processes. The yield of extract from skate cartilage with concentration was 23.3% with 2% alcalase hydrolysis, which was decreased to 8.47% and 3.37% with the first and second additional ethanol purifications, respectively. The yield was 16.62% with one ethanol purification after hydrolysis with a mixture of 1% alcalase and 1% protamex. The content of chondroitin sulfate was measured as 39.88-45.08% with different ratios of ethanol solvent. The content was 42.92% at a solvent ratio of 1:1 with alcalase protease and 45.08% with a ratio of 1:2 using a protease mixture of alcalase and protamex. The molecular weight range of chondroitin sulfate was about 110-310 thousand Da, and the purity of chondroitin sulfate was 24.87-49.92% with a mixture of alcalase and protamex in GPC analysis. The maximum purity of chondroitin sulfate was 53.93% after ultrafiltration. The odor strength of chondroitin sulfate was decreased by 33% and 38% after ethanol purification and additional filtration with activated carbon, respectively. The odor concentration of ammonia and TMA from chondroitin sulfate was decreased by 52.1% and 37.89% with activated carbon filtration and two ethanol purifications, respectively, but it was necessary to eliminate the odor components efficiently using additional physicochemical processes.
Skate Cartilage;Chondroitin sulfate;Ethanol purification;Hydrolytic extraction;Protease;
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