1997 Fiscal Year Final Research Report Summary

STUDY ON THE DYEING PROPERTY OF TRAIN (SHELLFISH) PURPLE

Research Project

Project/Area Number	08878009
Research Category	Grant-in-Aid for Exploratory Research
Allocation Type	Single-year Grants
Research Field	家政学
Research Institution	TAMAKI WOMEN'S JUNIOR COLLEGE
Principal Investigator	TERADA Takako TAMAKI WOMEN'S JUNIOR COLLEGE,CLOTHING SCIENCE,ASSISTANT PROFESSOR, 被服学科, 助教授 (00141804)
Project Period (FY)	1996 – 1997
Keywords	TYRIAN PURPLE / SHELLFISH PURPLE / DIBROMOINDIGO / RAPANA THOMASIANA / MURICOIDEA / HYPOBRANHIAL GRAND / REDUCTION DYEING / VAT DYSTUFF
Research Abstract	The hypobranchial glandulor secretions of live Akanishi (Rapana) is good dye material such as direct dye, and the prepared shellfish purple is employed in reduction (vat) dye. From 1996 till 1997, I studied the dyeing property of shellfish purple from Akanishi (Rapana) specimen. In vat dying, the most suitable condition is as follows : 1.Concentration of shellfish purple・・・・・・30-50% 2.Concentration of sodium hydroxide・・・・・・10-15g/1 3.Concentration of sodium lydrosulfite・・・・・・20-30g/1 4.Vatting and dyeing temperature・・・・・・60ﾟC 5.Dyeing time・・・・・・10-20min. 6.Frequency of dyeing・・・・・・3 times The 15 species of hypobranchial grands of the molluscs which live in the Ariake Bay, the East China Sea, and the Pacific Ocian, contains each percent of 6,6'-dibromoindigo, monobromoindigo, and indigo.