繊維製品中のカシミャ及び他の獣毛類のMALDI-TOF質量分析計による同定

摘要

We have recently developed new methods by which we can identify the animal species based on the difference in the amino acid sequences of keratin proteins using SDS-PAGE and MALDI-TOF mass spectrometry. In this paper, we report the effect of processing, especially dyeing, on the identification of animal species. The method was also successfully applied for identifying animal species in blends with natural fibers, chemical fibers, and other animal fibers. Camel, alpaca, horse, rabbit, and other animal hair fibers were used and animal species-specific peaks were observed in MALDI-TOF mass analysis.%カシミヤは獣毛の中でも最も貴重で，高価な繊維の一つである.一頭のカシミヤャギから1年間に取れる繊維の量は150～200gと少量であり，世界的な供給量は極めて限られている.そのため，カシミヤ製品の品質を保証し，消費者を守るためには鑑別技術が非常に重要である.