In-Situ Observation of Tryptophan in Larval Cocoon Silk of the Hornet Vespa simillima xanthoptera Cameron by Ultraviolet Resonance Raman Spectroscopy

Tsunenori KAMEDA; Tomotake NIIZEKI; Masashi SONOYAMA

doi:10.1271/bbb.70024

This article has now been updated. Please use the final version.

In-Situ Observation of Tryptophan in Larval Cocoon Silk of the Hornet Vespa simillima xanthoptera Cameron by Ultraviolet Resonance Raman Spectroscopy

Tsunenori KAMEDA, Tomotake NIIZEKI, Masashi SONOYAMA

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Keywords: ultraviolet resonance Raman (UVRR), hornet larval cocoon silk, Bombix mori cocoon silk, tryptophan (Trp), tyrosine (Tyr)

JOURNAL FREE ACCESS Advance online publication

Article ID: 70024

DOI https://doi.org/10.1271/bbb.70024

The final version of this article is now available: Vol. 71 (2007) , No. 5 p.1353

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Abstract

We performed in situ ultraviolet resonance Raman (UVRR) spectroscopy oo the larval cocoon silk of the hornet, Vespa simillima xanthoptera Cameron, and compared the result with that of the silkworm, Bombix mori. The UVRR spectrum of the hornet cocoon differed markedly from that of the B. mori cocoon: peaks attributable to tyrosine (Tyr) were observed strongly, and tryptophan (Trp) peaks weakly, in the spectrum of the B. mori cocoon, whereas peaks attributable to Trp exclusively appeared in the spectrum of the hornet cocoon.

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