Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2010.575.579WilaiwanS. ChiraphaB. YaowalakS. PrasongS. 72010107The aim of this study was to screening of some elements in different silk cocoon varieties. The varieties of silk were Thai silk (yellow color; Samrong, Nangtui, Nanglai, Huafai, Nangnoi, Nanglaung, Nangseiw, Surin4, Nongkhai012, Green and Gold colors), wild silk (Eri), Japanese and Chinese silk. The cocoons were collected and subjected for investigation of element composition by using SEM/EDX technique. The results found that the elements were arranged in following order of C>O>Ca>Si>Cl>S>Mg for inner surfaces of silk cocoons. For the outer surfaces, all elements were distributed in all Thai strain which slightly differed for each silk strain. Among them, C and O were found in high percentage in all silk cocoons both inner and outer surfaces. Japanese showed higher element than Chinese, but lower than Thai silk varieties. The result indicated that elements may be involved the silk spinning process of silk fiber to promote β-sheet structure.]]>Arai, T., G. Freddi, G.M. Colona, E. Scotti, A. Boschi, R. Murakami and M. Tsukada,2001B. mori silk and preparation of fabrics with antimicrobial activity.]]>80297303Chen, X., D.P. Knight and F. Vollrath,2002Nephila spidroin solution.]]>3644648Chen, X., Z.Z. Shao, N.S. Marinkovic, L.M. Miller, P. Zhou and M.R. Chance,2001Bombyx mori SF membrane monitored by time-resolved FTIR spectroscopy.]]>892534Chen, W.X., S.F. Lu and Y.Y. Yao,200575326330Dash, R., S. Mukherjee and S.C. Kundu,2006Antheraea mylita.]]>38255258Goto, M. and K. Suyama,20008410211038Hossain, K.S., A. Ochi, E. Ooyama, J. Magoshi and N. Nemoto,2003Bombyx mori silkworm.]]>4350359Hu, X., D. Kaplan and P. Cebe,200996827834Ji, D., Y.B. Deng and P. Zhou,2009938305310Knight, D.P. and F. Vollrath,2001Nephila spider.]]>88179182Lim, A., P.A. Guy, A.M. Makhov, M.J. Saderholm and M. Kroll et al.,19996314Li, G., P. Zhou, Y. Sun, W. Yao and Y. Mi et al.,200122860862Ochi, A., K.S. Hossain, J. Magoshi and N. Nemoto,2002Bombyx mori silkworm.]]>311871196Park, J.S., J.H. Kim, Y.C. NHO and O.H. Kwon,19986922132220Ruan, Q.X. and P. Zhou,2008883, 8848590Ruan, Q.X., P. Zhou, B.W. Hu and D. Ji,2008275219232Shao, Z.Z. and F. Vollrath,2002418741741Taddei, P., P. Monti, G. Freddi, T. Arai and M. Tsukada,2003Bombyx mori and Tussah silk fibres.]]>651-653433441Zhou, L., X. Chen, Z. Shao, P. Zhou, D.P. Knight and F. Vollrath,2003Bombyx mori silkworm.]]>554337341Zhou, L., X. Chen, Z. Shao, Y. Huang and D.P. Knight,2005Bombyx mori.]]>1091693716945Zhou, P., X. Xie, D.P. Knight, X.H. Zong, F. Deng and W.H. Yao,200413C solid-state NMR.]]>431130211311