Sang-Mo Kang

Konkuk University, Sŏul, Seoul, South Korea

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Publications (11)4.62 Total impact

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    ABSTRACT: A conditioner containing lugworm autolysate was prepared, and its feasibility as a new conditioner was investigated. The treatment of hair with the conditioner, before and after dyeing showed positive effects on the thickness, weight, and amino acid contents of the hair. These properties were significantly enhanced, and similar results were obtained by hair surface examination by using scanning electron microscopy and tensile strength measurements. The surface of the cuticles in the experimental group was smoother than that of the control group, and the arrangement of the hair scales was maintained even after shampooing for 20 times. The hair tensile strength of the experimental group was significantly higher than that of the control group. The significant treatment effect of the conditioner containing lugworm autolysate could be attributed to the synergistic effect of adhesive strength and effective film formation properties of lugworm autolysate.
    Fibers and Polymers 01/2013; 14(12). · 1.11 Impact Factor
  • Won Joon Choi, Sang-Mo Kang, Joonseok Koh
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    ABSTRACT: The feasibility of using kiwifruit protease as a new cosmetic material for human hair care was investigated. The effectiveness of the kiwifruit protease treatment was assessed by optical microscope examination, amino acid analysis, tensile strength changes, and dyeability test. The activated kiwifruit protease removed impurities and dirt from the hair surface without severe changes in mechanical properties. The total amino acid content of the hair samples decreased as the duration of protease treatment increased and as the treatment temperature increased. The kiwifruit protease treatment also enhanced dye uptake due to the improvement in dye accessibility to the hair via the cell membrane complex.
    Fibers and Polymers 10/2012; 13(8). · 1.11 Impact Factor
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    Hye-Sook Kim, Kyu-Nam Shim, Sang-Mo Kang
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    ABSTRACT: A microbial strain having high keratinase activity was isolated from the soil of poultry factories of Gyeonggi or Chungcheong-do. The isolated strain was identified as Bacillus sp. based on its morphological and biochemical characteristics. In this study, the optimal conditions for the production of keratinase by this strain were investigated. The optimal medium composition for the keratinase production was determined to be 3.5% chicken feather as carbon source, 1.0% tryptone as organic nitrogen source, 1.0% as inorganic nitrogen source and 0.05% KCl, 0.05% , 0.03% as mineral source and 0.01% yeast extract as growth factor. The optimal temperature and pH was and 8.5 with shaking culture (200 rpm), respectively. The maximum keratinase production reached to 123 units/ml after 42 hr of cultivation under the optimal condition. When the hair was used as the sole carbon source, the maximum enzyme activity was 88 units/ml after 120 hr and in this case, the hair added in the medium was not degraded completely but got thinner than the control by 20%.
    KSBB Journal. 01/2010; 25(3).
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    ABSTRACT: In this study, a kiwifruit-produced protease was used to improve the quality of the wool and silk fabrics. The wool and silk were treated with the actinidin from kiwifruit. Following this protease treatment, changes in the surface of a single yarn of the fabrics were observed via both an optical microscope and a scanning electron microscope (SEM). In order to determine the amount of dye uptake in the fabric, changes in the K/S value of the wool and silk were measured by spectrophotometric analysis. Also, we performed a tensile strength examination to determine variation in their mechanical properties. By increasing the protease treatment time to 48h, the dyeing properties of fabrics were enhanced, and the surfaces of the single yarns of the fabrics became smoother, because of the removal of soil and scale in them. However, no mechanical changes were detected in the fabrics. Thereby, we suggest that the kiwifruit-produced actinidin treatment can improve the quality of the fabrics.
    Fashion & Textile Research Journal. 01/2009; 11(3).
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    Se-Eun You, Sang-Mo Kang, Joon-Seok Koh
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    ABSTRACT: The feasibility of earthworm protease as a new cosmetic material for human hair care was investigated. The effectiveness of the earthworm protease treatment was assessed by thickness change of hairs, optical microscope examination, aminoacid analysis, surface morphology, angular resolution analysis through methylene blue staining method and tensile strength change. The protease treated hair became thinner and the soil on the surface removed in experimental groups unlike control group. Tensile strength decreased in experimental group in which the enzymes may decompose polypeptide bonds.
    Textile Coloration and Finishing. 01/2009; 21(5).
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    ABSTRACT: A lugworm protease, Perinereis aibuhitensis, was used to improve the dyeing properties of protein fibers such as wool and silk. The optimal condition for the activity of the lugworm protease was about 40°C at pH 7. The wool and silk were treated with the protease extracted from a lugworm and the K/S values of the dyed wool and silk were measured using a spectrophotometer in order to compare the dye uptake. The protease treatment enhanced the dyeing properties of protein fibers without severe changes in their mechanical properties. The surface appearances of protease-treated fibers were observed via microscopy.
    Journal of Industrial and Engineering Chemistry - J IND ENG CHEM. 01/2009; 15(4):584-587.
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    ABSTRACT: A pineapple protease, bromelain, was used to improve the dyeing properties of protein fibers such as wool and silk. The optimal condition for the activity of the pineapple protease was about 60 °C at pH 7. The wool and silk were treated with the protease extracted from a pineapple and the K/S values of the dyed wool and silk were measured using a spectrophotometer in order to compare the dye uptake. The protease treatment enhanced the dyeing properties of protein fibers without severe changes in mechanical properties. The surface appearances of protease-treated fibers were observed by microscopy.
    Fibers and Polymers 05/2006; 7(2):180-185. · 1.11 Impact Factor
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    ABSTRACT: For studies of fibrinolytic enzyme strain K-54 was isolated from the Korean traditional food chungkook-jang. Isolated strains K-54 was identified as Bacillus subtilis. The molecular weight of fibrinolytic enzyme from B. subtilis K-54 was 27 kDa. Optimum temperature for fibrinolytic enzyme of B. subtilis K-54 was and optimum pH for producing the enzyme of this strain was ranging from 8 to 12. Also, it was found out enzyme activity was completely inhibited by 1mM PMSF. The result indicated this enzyme was thermo-stable alkaline serine protease with strong fibrinolytic activity. The wool and silk were treated with protease of B. subtilis K-54. As a result, the property of dyeing of wool fabrics was increased. By the increasing of treatment time became smoothened. But the change of mechanical properties were not changed.
    Fashion & Textile Research Journal. 01/2006; 8(2).
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    ABSTRACT: An earthworm protease, Lumbricus rubellus, was used to improve the dyeing properties of protein fibers such as wool and silk. The optimal condition for the activity of the earthworm pretense was about at pH 7. The wool and silk were treated with the protease extracted from an earthworm and the K/S values of the dyed wool and silk were measured using a spectrophotometer in order to compare the dye uptake. The pretense treatment enhanced the dyeing properties of protein fibers without severe changes in mechanical properties. The surface appearances of pretense-treated fibers were observed by microscopy analysis.
    Textile Coloration and Finishing. 01/2006; 18(5).
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    ABSTRACT: In this study, a microorganism-produced protease was used to improve the quality of fabrics. First, the protease-producing bacteria were isolated from soils, and one of them was selected and identified asBacillus sp. SJ-121. The optimal medium composition for its growth and protease production was determined to be as follows: glucose 1 g/L, soybean meal 0.5 g/L, soy peptone 0.5, K2HPO4 0.2, MgSO4·7H2O 0.002, Nacl 0.002, and Na2CO3 g/L. Also, the optimal temperature for the production of the protease byBacillus sp. SJ-121 was about 40°C at pH 7. The wool and silk were treated with the protease fromBacillus sp. SJ-121. Follwoing the protease treatment, changes in the surface of a single yarm of the fabrics were observed by both an optical microscope and a scanning electron microscope (SEM). Changes in the K/S value of the wool and silk were measured by spectrophotometric analysis, in order to determine the amount of dye uptake in the fabrics. We also performed a tensile strength examination in order to determine the degree and nature of mechanical changes in single yarns of the wool and silk fabrics. By increasing the protease treatment time to 48h, the dyeing characteritics of the fabrics were enhanced, and the surfaces of the single yarns of the fabrics became smoother, due to the removal of soil and scale in them. However, no mechanical changes were detected in the fabrics. Therefore, we suggest that proper treatment of the protease produced byBacillus sp. can improve the quality of silk and wool.
    Biotechnology and Bioprocess Engineering 01/2005; 10(3):186-191. · 1.28 Impact Factor
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    ABSTRACT: Genetically Modified (GM) corn 'Bt11' was developed to promote insect resistance using crylA (b) gene derived from Bacillus thuringiensis. Effects of heat, pressure, and on DNA fragment degradation in Btll corn were examined through PCR. Whereas DNA fragment degraded completely within 4 min at and by autoclave, most remained after oil-frying, boiling, and drying-autoclave. Treatment of enzyme did not affect DNA fragment degradation. Among 65 corn-processed foods analyzed, 9 were detected as GM corn-containing foods(13.6%).
    Korean Journal of Food Science and Technology. 01/2004; 36(2).

Publication Stats

13 Citations
4.62 Total Impact Points

Institutions

  • 2005–2013
    • Konkuk University
      • • Department of Organic and Nano System Engineering
      • • Department of Biological Engineering
      Sŏul, Seoul, South Korea