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KMID : 1134819980270020275
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Journal of the Korean Society of Food Science and Nutrition
1998 Volume.27 No. 2 p.275 ~ p.280
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Pretreatment Conditions of Porphyra yezoensis, Undaria pinnatifida and Laminaria religiosa for Functional Alage - Tea
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Jo Kil-Suk
DO Jung-Ryong
Koo Jae-Geun
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Abstract
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The possibility of utilizing Porphyra yezoensis, Undaria pinnatifida and Laminaria religiosa into algae-tea having biological functionality was investigated by analysis of functional component, experimentation for low viscosity and various pretreatments. In water soluble fraction of powdered algae extracted for 3 minutes with 30 times of hot water, major functional components were composed of 1.53% porphyran and 170.04㎎% taurine in P. yezoensis, 1.09% fucoidan and 1.18% sodium alginate in U. pinnatifida, and 1.28% fucoidan, 1.99% sodium alginate and 371.25㎎% iodine in L. religiosa, on dry basis. For lowering viscosity and masking off-flavor in each water soluble fraction, it was desirable that P. yezoensis was washed for 12 hours in sea water and 30 minutes in fresh water, dried at 3 to 5℃, powdered to size of 30 mesh and then roasted for 3 minutes at 120℃, and that both U. pinnatifida and L. religiosa were washed, semidried to 40~50% moisture content, heated for 40 minutes at 120℃ by autoclave, dried, powdered to size of 30 mesh and then roasted for 5 minutes at 110℃.
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KEYWORD
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algae-tea, pretreatment, functional component, viscosity
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