General characteristics of Antheraea yamamai silkworm cocoon cultured in Korea

Lee, Kwang-Gill; Chung, Daeun; Kim, Kee‐Young; Jo, You‐Young; Kim, Hyun-Bok; Kim, Sungkuk; Kweon, HaeYong

doi:10.7852/jses.2015.53.1.6

Cited by 4 publications

(11 citation statements)

References 13 publications

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Section: Figurementioning

confidence: 99%

“…On the other hand, this silk fiber was produced and used by “wild” silkworms to construct cocoons (with the same function as the most of the silks produced by Lepidoptera insects). Moreover, the β-sheet content of A. yamamai silk is intermediate between that of B. mori silk and Nephila spider dragline silk while the mechanical properties of the A. yamamai silk are also intermediate between those of the other two silks 24,25 . A more critical motive of this study was to construct regenerated functional fibers following fiber design strategies used by the A. yamamai silk moth.…”

Section: Introductionmentioning

confidence: 95%

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Tensan Silk-Inspired Hierarchical Fibers for Smart Textile Applications

Zhang

Zheng

et al. 2018

ACS Nano

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Tensan silk, a natural fiber produced by the Japanese oak silk moth ( Antherea yamamai, abbreviated to A. yamamai), features superior characteristics, such as compressive elasticity and chemical resistance, when compared to the more common silk produced from the domesticated silkworm, Bombyx mori ( B. mori). In this study, the "structure-property" relationships within A. yamamai silk are disclosed from the different structural hierarchies, confirming the outstanding toughness as dominated by the distinct mesoscale fibrillar architectures. Inspired by this hierarchical construction, we fabricated A. yamamai silk-like regenerated B. mori silk fibers (RBSFs) with mechanical properties (extensibility and modulus) comparable to natural A. yamamai silk. These RBSFs were further functionalized to form conductive RBSFs that were sensitive to force and temperature stimuli for applications in smart textiles. This study provides a blueprint in exploiting rational designs from A. yamanmai, which is rare and expensive in comparison to the common and cost-effective B. mori silk to empower enhanced material properties.

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Section: Figurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

Tensan Silk-Inspired Hierarchical Fibers for Smart Textile Applications

Zhang

Zheng

et al. 2018

ACS Nano

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“…A.yamamai silkworm cocoon was degummed with alkali degumming method (Shin et al, 2015;Lee et al, 2015;Shin et al, 2012). Briefly, the cocoon was degummed 3 times for 30 min under boiling water with Na2CO3 2.5g/L.…”

Section: Solubilitymentioning

confidence: 99%

“…The general characteristics of A.yamamai silkworm silk were studied by my research group (Lee et al, 2015;Kweon and Park, 1994). A.yamamai silk fiber has been used as a valuable textile fiber due to unique luster and color for more than 4,000 years.…”

Section: Introductionmentioning

confidence: 99%

Dissolution of degummed Antheraea yamamai silkworm cocoon

Jo¹,

Bae²,

Kweon³

2017

International Journal of Industrial Entomology

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Dissolution of Antheraea yamamai silkworm cocoon was carried out in various solvent systems with various dissolving conditions including dissolution salts, salt concentration, dissolving temperature, and time. General chaotropic salt for Bombyx mori silk fibroin does not work for A. yamamai silkworm cocoon. Lithium bromide 9.3 M at 100 o C also does not work to dissolve wild silkworm cocoon. However, 9 M of lithium thiocyanate treatment at 100 o C induced 100% dissolution of wild silkworm cocoon. But it could not be dissolved lower than 60 o C. Like lithium thiocyanate, less than 60 o C treatment with molten calcium nitrate 4 hydrate could not dissolve wild silkworm cocoon. As the dissolution temperature increased up to 100 o C, the solubility of wild one was reached over 90%. SDS-PAGE showed broad tailing stream pattern that means the molecule of wild silk was depolymerized with dissolution temperature and time. From the above results, the best chaotropic salt for A.yamamai silkworm cocoon is calcium nitrate 4 hydrate. IntroductionSilk is classified into two general groups: domestic (Bombyx mori) and wild type (Antheraea yamamai, etc) (Kweon and Park, 1994). The general characteristics of A.yamamai silkworm silk were studied by my research group (Lee et al., 2015;Kweon and Park, 1994). A.yamamai silk fiber has been used as a valuable textile fiber due to unique luster and color for more than 4,000 years. Recently, silk polymer has been revealed several advantages for biological materials due to its blood compatibility, oxygen permeability, and so on (Sakabe et al., 1989;Minoura et al., 1990). Silk polymer has been studied for various applications such as cosmetics, suture and artificial eardrum (Kundu et al., 2013;Ju et al., 2014;Vepari and Kaplan, 2007;Kim et al., 2010), and so on. The reason why B.mori silk examined as possible biomaterials is that we know how to dissolve it and reshape it for the application. In the case of A.yamamai silk, it is known to have an arg-gly-asp tripeptide sequence (Ruoslahti and Pierschbacher, 1986, Minoura et al., 1995). Biocompatibility (Wang et al., 2011), gelation (Liu andZhang, 2014), degradation (You et al., 2014) and PEG modified film (Wei et al., 2014) using A.yamamai silk protein have been investigated.Until now there is no good solvent for silk materials because silk fibroin behaves like a thermoset polymer after solidification through spinning process. The only way to dissolve silk materials is concentrated chaotropic salts, which destabilize silk protein in solution and increase the solubility of fibroin (Kweon, 1998

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“…In this study, we examined the condition of A. yamamai Wild silkworm A. yamamai cocoon has calcium oxalate crystal on its surface (Lee et al, 2015;Freddi et al, 1994).…”

Section: Introductionmentioning

confidence: 99%

Degumming of Antheraea yamamai silkworm cocoon

Shin

Jeon²,

김종호³

2015

International Journal of Industrial Entomology

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Oak silkworm, Antheraea yamamai (A. yamamai), has been used for clothing and surgical suture and considered as biomaterial due to RGD tripeptide. This paper reported the degumming conditions of A. yamamai using sodium oleate, high pressure and temperature, and sodium carbonate. Degumming ratio of A. yamamai cocoon using sodium oleate was less than 10%. High pressure and temperature treatment induced 30% weight loss of A. yamamai cocoon. The concentration, treatment temperature and time using sodium carbonate was examined and revealed the following conditions for degumming; 5% owf, 60 min at 100 o C. The degummed solution was confirmed using UV and FT-IR spectrometer. Our results can be used to handle A. yamamai silkworm cocoon for further application including material processing. Reported degumming method for A. yamamai raw silk was sodium carbonate method and enzymatic method Shin et al., 2012;Kawahara and Nakajima, 1992).In this study, we examined the condition of A. yamamai

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General characteristics of Antheraea yamamai silkworm cocoon cultured in Korea

Cited by 4 publications

References 13 publications

Tensan Silk-Inspired Hierarchical Fibers for Smart Textile Applications

Tensan Silk-Inspired Hierarchical Fibers for Smart Textile Applications

Dissolution of degummed Antheraea yamamai silkworm cocoon

Degumming of Antheraea yamamai silkworm cocoon

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