The Mass Spectrometry society of Japan - The 71st Annual Conference on Mass Spectrometry, Japan
Japanese

Abstract

Table of contents

Timetable

Plenary Lecture

Symposium Sessions (Day1, Day2, Day3)

Basic Sessions (Day1, Day2, Day3)

Young Researchers' Sessions (Day1, Day2, Day3)

Poster Presentations (Day1, Day2, Day3)

Special Evening Sessions

Corporate Program

Poster Presentations

Day 1, May 15（Mon.）　　Room P (Foyer, Room 1004-1007)

1P-30　　PDF

A quantitative discrimination study of recycled cashmere fibers using MALDI-TOF MS

(1Boken, 2Shimadzu)
Shinya Koide1, oYuzo Yamazaki2, Mizuki Ikoma1, Aiko Yamaguchi1, Shinichi Ohashi1

Recently, as concern of sustainable growth of society is increasing, it has been noted that raising cashmere goats can have a negative impact on our environment. In an effort to reduce the number of grazed animals, there is an increasing demand for recycled cashmere in apparel and textile industries. Meanwhile, the lack of analytical methods to obtain an appraisal parameter relative to the presence of recycled fibers in textiles is still a significant issue. Whereas optical microscopy is a useful method to observe changes in shape of the fibers, there is no other testing method to quantify the recycled cashmere. We will report the results of multiple regression analysis incorporated with an index of recycled samples using MALDI-TOF MS and the ratio of the abnormal shape determined using the microscope. The index obtained with MALDI-TOF MS and observation by optical microscopy enable a quantitative discrimination between recycled and virgin cashmere.