FIBROIN CONTENT IN RAW SILK FROM BOMBYX MORI L. COCOONS WITH DIFFERENT FLUORESCENT CHARACTERISTICS

摘要

B. mori silk is composed of two main proteins of which fibroin occupies the largest share and is a major contributor to the economic performance of the reeling process. The objective of the present study was to analyze fibroin content in raw silk (silk thread) from Bombyx mori L. cocoons with different (violet, intermediate and yellow) fluorescent characteristics. The subject of study were 1998 skeins distinguished by sex and fluorescence of double and tetra-cross silkworm hybrids. The results obtained show that the ultraviolet fluorescence of cocoons influences the phenotypic expression of fibroin content.Reliably lowest is the content of skfeins from violet fluorescent cocoons and the highest is that from yellow fluorescent ones. Higher is the fibroin content of skeins from the double-cross hybrids compared to tetra-cross hybrids.The result obtained allow us to conclude that in terms of the effectiveness of reeling is more advantageous to use the cocoons with yellow fluorescence as well as from analyzed double-cross hybrids.