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KMID : 1134820070360030262
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Journal of the Korean Society of Food Science and Nutrition
2007 Volume.36 No. 3 p.262 ~ p.268
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Physiochemical Properties of Carrageenan Hydrolysates by Organic Acids
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Joo Dong-Sik
Cho Soon-Yeoung
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Abstract
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This study was conducted to investigate various physiochemical activities of carrageenan hydrolysates obtained with organic acid treatments. The hydrolysates treated with citrate and malate at 100℃, 110℃ and 120℃ had antimicrobial activities against Bacillus cereus and Bacillus subtilis. Especially, the hydrolysates with malate at 120℃ for 180 min treatment had the strongest antimicrobial activity to Bacillus subtilis. Regardless of the hydrolysis conditions, inhibition ratios of tyrosinase activity by citrate and malate under 100～120℃ were over 97%. Especially, the inhibition ratios for tyrosinase activity of the hydrolysates obtained with citrate at 100oC for 180 min and at 120℃ for 90 min were 99.4% and 98.2%, respectively. Also, the inhibition ratios for tyrosinase activity of the hydrolysates obtained with malate under the same conditions were about 99.5% and 99.3%, respectively. The APTT as anticoagulant activity of carrageenan hydrolysates with 0.3% malate and citrate at 80℃ for 180 min were 2,451±18 (sec) and 1,617±15 (sec), respectively.
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KEYWORD
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carrageenan hydrolysates, antimicrobial activity, tyrosinase inhibition activity, anticoagulant activity
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