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Tsukuba Business-Academia Cooperation Support Center, Agriculture, Forestry and Fisheries Research Council Secretariat of the Ministry of Agriculture, Forestry and Fisheries, Japan (MAFF) was established in 1978 as Tsukuba Office and has been planning and operating various research facilities for supporting experimental research activities of research agencies, prefectural organizations and universities. The Tsukuba Business-Academia Cooperation Support Center is currently managing two centers, Agriculture, Forestry and Fisheries Research Infor [...]

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Journal Article

Journal Article

Dissolution of silk fibroin with calciumchloride/ethanol aqueous solution  [1998]

Ajisawa, A. (Katakura Kogyo Co. Ltd., Tokyo (Japan));

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Fibroin was dissolved in a solution of calcium chloride and water (molar ratio 1:8) and a solution of calcium chloride, water and ethanol (molar ratio 1:8:2) which was made by adding 2 mol of ethanol to the former solution. Fibroin insoluble in the calcium chloride aqueous solution at 20 to 30 degrees C (approx room temperature) for 240 to 720 hr, but was dissolved in the solution to which ethanol was added. Such long-term treatment, however,involves cost problems. In order to cope with such problems fibroin was treated with a calcium chloride aqueous solution at 40 to 60 degrees C for 1 hr. The fibroin was dissolved to 0.7 to 3.3%. Treatment in the solution to which ethanol was added at 55 degrees C for 1 hr, resulted in complete dissolution, which was approximately 35 times more likely than with the calcium aqueous solution. Based on these results, the solution of calcium chloride, water and ethanol (molar ratio 1:8:2) was considered to be very promising as a solvent of bio-material fibroin, from a viewpoint of industrial application
From the journal
Journal of Sericultural Science of Japan (Japan)
ISSN : 0037-2455

Bibliographic information

Language:
English
Type:
Summary
In AGRIS since:
2001
Volume:
67
Issue:
2
Start Page:
91
End Page:
94
All titles:
"Dissolution of silk fibroin with calciumchloride/ethanol aqueous solution"@eng
Other:
"Summaries (En, Ja)"
"2 tables; 4 fig.; 7 ref"
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Bibliographic information

Language:
English
Type:
Summary
In AGRIS since:
2001
Volume:
67
Issue:
2
Start Page:
91
End Page:
94
All titles:
"Dissolution of silk fibroin with calciumchloride/ethanol aqueous solution"@eng
Other:
"Summaries (En, Ja)"
"2 tables; 4 fig.; 7 ref"