• Title/Summary/Keyword: calcium alginate fiber

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Preparation of Calcium Alginate Fiber by Ion Exchange (이온교환에 의한 칼슘알지네이트 섬유의 제조)

  • Son, Tae-Won;Lee, Min-Gyeong;Han, Song-Jeong
    • Textile Coloration and Finishing
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    • v.23 no.1
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    • pp.51-59
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    • 2011
  • Calcium alginate fiber were prepared by wet spinning of various conditions, including different concentrations of sodium alginate solution and $CaCl_2$ concentrations for coagulating the fiber through an absorption of calcium ion. The absorption of calcium ion during the coagulating step lead to solidify the fibers by the replacement of sodium ion with calcium ion to produce some crosslinking. The concentration of calcium ion in the calcium alginate fiber seems to be well related to the mechanical and physical property of the fiber, such as fiber strength moisture regain, and degree of swelling. The tensile strength of calcium alginate fiber was increased along with the increasing amount of sodium alginate solution. According to EDS analysis, 7 wt% $CaCl_2$ coagulation bath resulted in more calcium ion in the fiber compared to 3 wt% $CaCl_2$ coagulation bath. The decomposition temperature of calcium alginate fiber was $199^{\circ}C$, which $14^{\circ}C$ higher than that of sodium alginate.

Preparation of Functional Textiles by Multilayer Structure - Cotton Fabrics Treated with Chitosan and Alginate Skin - (다층 코팅 처리에 의한 기능성 섬유의 제조 - 키토산과 알지네이트로 피복된 면 -)

  • Son, Tae-Won;Lee, Ju-Hyun;Lee, Min-Gyeong;Cho, Jin-Won
    • Textile Coloration and Finishing
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    • v.23 no.3
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    • pp.201-209
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    • 2011
  • With a new method of applying chitosan and alginate onto cellulose, multi-coated cotton fabrics with chitosan and alginate were prepared and characterized. To coat cotton with chitosan, raw cotton was dipped in chitosan solution, mangled of 1kgf/$cm^2$, neutralized in 2 wt% NaOH soluton, washed, and dried at $60^{\circ}C$ oven. The chitosan-coated fiber was dipped in sodium alginate solution, 1kgf/$cm^2$ mangled, neutralized in 2 wt% $CaCl_2$ solution, washed, and dried at $60^{\circ}C$ oven, resulting in CCAC(coated cotton with chitosan and calcium alginate skin) fiber characteristics. Excellent absorbancy of distilled water and saline solution was observed by the absorption test on cotton fabric treated with CCAC(0.5 wt% calcium alginate) and 0.5 wt% calcium alginate respectively. The SEM photograph confirmed the uniform coating on the cotton fabric surface.

Alginate-Microfibers Produced by Self-Assembly in Cell Culture Medium

  • Park, Jeong-Hui;Shin, Ueon-Sang;Kim, Hae-Won
    • Bulletin of the Korean Chemical Society
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    • v.32 no.2
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    • pp.431-433
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    • 2011
  • Alginate microfibers were fabricated by self assembly of alginate monomers exuded from alginate beads (~2 mm in diameter) containing calcium phosphate. Upon incubation of the beads in cell culture medium at $37^{\circ}C$ for a few days, fibers with a diameter of about $7{\mu}m$ started to sprout from the bead surface, and these grew up to about 10 mm in length, resulting in the beads being covered with fiber forests similar to chestnut bur. The combined system of the alginatebased microfiber forest and bead is considered to be useful as a novel 3-dimensional scaffold for cell culture and tisssue growth.

Dietary Fiber and Cholesterol Metabolism (식이섬유와 콜레스테롤 대사)

  • Kang, Hee-Jung;Song, Young-Sun
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.26 no.2
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    • pp.358-369
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    • 1997
  • Hypercholesterolemia is a main risk factor to develop cardiovascular disease, a major cause of death in Korea currently. Dietary factors which shows hypocholesterolemic effect have been reported, which includes plant proteins, unsaturated fatty acids, milk, calcium, flavonoids. Numerous animal and human studies confirmed the pronounced hypocholesterolemic effects of soluble dietary fiber, such as psyllium husk, pectin, sodium alginate, guar gum. Several hypotheses have been proposed to explain the hypocholesterolemic effect of dietary fiber, including binding of bile acids by fiber, interference of lipid absorption and reduced hepatic cholesterol synthesis by propionate, a product of soluble dietary fiber fermentation. Several other hypotheses have been proposed, and these hypotheses are not mutually exclusive.

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Study Development of Salad Dressing with Added Sea Tangle($Laminaria$ $japonica$) (다시마를 이용한 샐러드 드레싱 제조의 품질 특성)

  • Jung, Hyeon-A;Kim, An-Na;Ahn, Eun-Mi;Park, Suk-Hyeon;Kim, Min-Ji;Yoo, Yun-Jung;Lee, You-Rim
    • The Korean Journal of Food And Nutrition
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    • v.24 no.4
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    • pp.520-527
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    • 2011
  • This study was conducted to develop a novel salad dressing composite recipe of natural seasoning containing the dried sea tangle($Laminaria$ $japonica$) that has a high preference. Sea tangle($Laminaria$ $japonica$) is included in the vitamins and minerals, magnesium, calcium, iodine, iron content, such as high, and contained in Sea tangle alginate is not a small conference known as dietary fiber. To manufacture salad dressing with sea tangle, dressing with 0%, 3%, 6%, 9%, and 12% added sea tangle were prepared and tested for quality. The pH tended to increase with the increased sea tangle in addition but in contrast, acidity showed. The 'L' color decreased with added sea tangle, whereas the 'a' and 'b' values increased. Brix measurements increase with added sea tangle. The strength texture results, 0% was the highest, lowest 9%. Bitterness and chewiness texture results, 9% was the highest, lowest 0%. According to the sensory test results, in the topic overall quality 3% was by 3.76 point the highest. But, during total nine clause, in clause six, by 6% was the highest.