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KMID : 1134820070360070902
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Journal of the Korean Society of Food Science and Nutrition
2007 Volume.36 No. 7 p.902 ~ p.907
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Effect of Gamma Irradiation on the Physical Properties of Alginic Acid and λ?Carrageenan
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Song Eu-Jin
Lee So-Young
Kim Koth-Bong-Woo-Ri
Park Jin-Gyu
Kim Jae-Hun
Lee Ju-Woon
Byun Myung-Woo
Ahn Dong-Hyun
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Abstract
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This study was carried out to find the effect of γ-irradiation on the physical properties of alginic acid and λ-carrageenan solution. Alginic acid and λ-carrageenan aqueous solution were irradiated with Co60 γ-rays in dosages ranging from 3 to 100 kGy, and then the molecular weight, viscosity and color were measured. The molecular weight of alginic acid and λ-carrageenan solution were decreased as the γ-irradiation dosage increased. In addition, the viscosity of irradiated alginic acid and λ-carrageenan solution were decreased depending upon the γ-irradiation dosage, too. The high dosage irradiated alginic acid and λ-carrageenan solution’s color were changed to yellow. These results suggest that low dosage of γ-irradiation from 3 to 20 kGy is a very effective method for producing low-molecular alginic acid and λ-carrageenan.
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KEYWORD
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γ-irradiation, alginic acid, λ-carrageenan, molecular weight, viscosity, color
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