• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2010.03a
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• pp.104-105
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• 2010

• Proceedings of the Korean Society of Sericultural Science Conference
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• 2002.10a
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• pp.93-93
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• 2002

No Abstract, See Full Text

• Proceedings of the Korean Society of Sericultural Science Conference
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• 2002.10a
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• pp.94-94
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• 2002

No Abstract, See Full Text

• Korean journal of applied entomology
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• v.59 no.4
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• pp.451-454
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• 2020

Sericulture is a main insect industry in Sangju (Kyungpook, Korea). This study reports an occurrence of a viral disease in the sericulture farms in 2020. More than 20% silkworm larvae (Bombyx mori) suffered diarrhea and melted tissues with pathogenic lethality at 4th or 5th instars. PCR diagnosis showed a positive response against B. mori nucleopolyhedrosis virus (BmNPV) infection. Tissue extract of the infected larvae was applied to healthy larvae by a leaf-dipping method and exhibited the same viral symptoms. The viral extract was used to be overlaid on Sf9 cells. The infected Sf9 cells showed polyhedra in the cytoplasm. These results indicate that the silkworm larvae reared in the sericulture farms in Sangju were infected with BmNPV.

• International Journal of Industrial Entomology and Biomaterials
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• v.9 no.1
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• pp.29-33
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• 2004

Low molecular weight silk fibroin (LMSF), which was prepared by hydrolysis of silk fibroin using high-temperature and high-pressure method, was found to inhibit the oxidation of L-3,4,-dihydroxyphenylalanine (L-DOPA) catalyzed by mushroom tyrosinase (EC 1.14.18.1). LMSF contained mostly free amino acids such as L-glycine, L-alanine, and L-serine and oligopeptides, mainly glycine-alanine dimer. As a result of analyzing the inhibition kinetics from Lineweaver-Burk plots, L-glycine and glycine-alanine dimer showed noncompetitive behavior while uncompetitive behavior was observed in L-alanine, and L-serine. When weight percent concentration of ${ID_50}$ was compared, L-glycine was most effective on the inhibition and LMSF was also good enough for the inhibition effect of tyrosinase activity. LMSF showed a mixed-type inhibition and the inhibitory mechanism of LMSF might be caused by free amino acids and oligopeptides. As a result of spectroscopic observation with time, initial rate of increase of DOPAchrome decreased remarkably and the time to reach maximum absorbance increased as an increase of the concentration of L-glycine, meaning that L-glycine made itself mainly responsible for the formation of chelate with ${Cu^2+}$ in tyrosinase. However, in case of L-alanine, L-serine, and especially glycine-alanine dimmer, the production of DOPAchrome after an arrival at maximum absorbance decreased, indicating the production of adducts through the reaction with DOPAquinone.

• Journal of Sericultural and Entomological Science
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• v.48 no.1
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• pp.11-15
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• 2006

Antheraea yamamai silk fibroin powder was prepared by treatment with HCl. The prepared A. yamamai fibroin hydrolysate was characterized by gel filtration chromatography, amino acid analysis, X-ray diffractometry, circular dichroism analysis, differential thermal analysis, and thermogravimetry. The average molecular weight of A. yamamai powder was about 430 and the major amino acids composed of the powder were Ala and Ser. According to XRD analysis, A. yamamai silk powder showed sharp diffraction peaks at $2{\theta}=20.34^{\circ}\;and\;31.5^{\circ}$. CD spectrum showed a peak around 220 nm and a should 215 nm, assigned to ${\alpha}-helix\;and\;{\beta}-sheet$ structure, respectively. DSC and TGA showed that the maximum degradation temperature of powder was around $250{\sim}270^{\circ}C$. Moreover, no harmful heavy metal was contained in the A. yamamai silk fibroin hydrolysate.

• Journal of the Korean Society of Industry Convergence
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• v.13 no.4
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• pp.191-196
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• 2010

This study explores the solution of a variety of conditions of the natural dyeing with the Mulberry. To obtain this, the Cu complex compound was added into the extracts. The Mulberry extract was added the Copper acetate to obtain the Black sediment the metal complex compound of anthocyanidin. According to the result of using the complex compound of the solid material, the dyeing properties were excellent. The metal complex compound acted as a mordant, thus it reduced the process of mordanting in the natural dying.

• Fashion & Textile Research Journal
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• v.9 no.1
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• pp.24-34
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• 2007

The shroud of the Chosun dynasty period originally meant the new start in the next world. Its basic principle was to wear the best clothes or wedding garments during one's life. The white hemp cloth-shroud worn during this time was formed after the 20th century. In the beginning it started simply by imitating the shroud of the common people. However recently many aspects of the trade have deteriorated by the commercialism of the shroud traders. So this study focuses on the way of keeping traditions and making the shroud desirable. First, the shroud was made of the best materials such as silk, hemp cloth, ramie cloth and cotton cloth in the past. A thought that the shroud material must be white hemp cloth is the result from misunderstanding of the traditional shroud of the Chosun dynasty period. We can produce beautiful shrouds using natural materials without losing dignity and at diverse prices. Second, the shroud was produced not only to keep the dignity of a dead person but also to avoid wasting the original cloth. Third, The shroud has pursued diversity in classifying the traditional style or the basic style. It is possible to select the shroud flexibly according to one's sense of values or the way the tomb was made. These days, the Korean full-dress attire and Wonsam (Korean woman's ceremonial clothes) are the standardized form of the ready-made shroud. The man's Korean full-dress attire on sale is sewn in the wrong way and its shape looks more like the Wonsam. I offer diverse shrouds of the Chosun dynasty period, for example, the official uniform, hemp cloth upper garment, men's black upper garment, Korean full-dress attire, Korean overcoat, Wonsam, the long hood worn by a Korean woman and a woman's long upper garment, so that we can see the Korean originality and beauty through the different types of shrouds. Also, I adjusted a number of items, undergarments and other articles according to the price. As mentioned before this study helps to portray a desirable understanding of the culture of the shroud. So I corrected many problems of the present shroud and propose a new type of shroud based on tradition. Furthermore, I recommend a way of making use of the Hanbok which the man wears during his life, at the wedding ceremony or a his 60th birthday without buying a new shroud.