RRC ID 57042
著者 Ishikawa H. and Kajiura Z.
タイトル Reeling and fiber property of Japanese oak silkmoth cocoon treated with proteinase.
ジャーナル Journal of Silk Science and Technology of Japan
Abstract Japanese oak silkmoth (Antheraea yamamai) cocoons were treated by proteinase K solution (dissolved by phosphate buffer) or heated by 0.05% (w/v) NaHSO3 solution as traditional method. Cocoons were reeled by automatic reeling machine to get silk fiber. Fiber and silk that couldn’t reel as silk fibers (thin inner shell layer that is no longer able to be reeled and brushing waste that arisen by brushing to pull out the cocoon filament from the cocoon surface and feeding to the automatic reeling machine) were measured their weight and calculated the ratio of silk fiber and total weight of cocoon shell to know the reeling efficiency (recovery). According to the t-test, there was significant difference between at the recovery of silk fiber cooked by using proteinase K (average ± standard deviation (SD): 72.4 ± 3.8%) and traditional method (average ± SD: 63.0 ± 7.9%). Reeled fibers were also taken the tensile testing and t-test. The results showed that there was no significant difference between the average of tensile strength [N] per denier [d] of fibers cooked by using proteinase K (average ± SD: 46.1 ± 5.2 mN/d) and traditional method (average ± SD: 44.9 ± 4.8 mN/d). These results suggest that the method of using proteinase K solution to the cocoon of A. yamamai for reeling makes possible to get silk fiber more efficiently with same mechanical property as that of traditional method. This can be expected to use as efficient method for reeling silk from wild silkmoth cocoon.
巻・号 27
ページ 5-14
公開日 2019-3-12
DOI 10.11417/silk.27.5
リソース情報
カイコ A. yamamai