Characterization of silkworm larvae growth and properties of silk fibres after direct feeding of copper or silver anoparticles
作者单位：Chongqing Engineering Research Center of Biomaterial Fiber and Modern TextileCollege of Textile and GarmentSouthwest University Institute of Biomechanics and Medical EngineeringTsinghua University State Key Laboratory of Silkworm Genome BiologyKey Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural MinistryCollege of BiotechnologySouthwest University
会议名称：《中国蚕学会第九届青年学术研讨会》
会议日期：2017年
学科分类：090502[农学-动物营养与饲料科学] 0905[农学-畜牧学] 09[农学]
关 键 词：Bombyx mori silkworm metallic nanoparticles silk gland silk fibre metallic element distribution mechanical property
摘 要：In this study,we raised silkworm larvae from the fifth instar with a modified diet of copper or silver nanoparticles（NPs） combined with mulberry *** larvae growth was characterized according to larvae weight,survival rate,cocooning and silk glands *** or Ag element distributions in their tissues were examined with inductively couple plasma mass *** properties of silkworm silks were investigated with Fourier transform infrared（FTIR） and amino acid analyses,thermogravimetric and quasi-static tensile *** results depicted a primary concentration distribution map of Cu or Ag element in silkworm larva tissues by the modified diet,and Cu or Ag NPs had slightly negative influences on the growth of the silkworm *** from FTIR spectra and amino acid analyses showed that the Cu or Ag NPs slightly inhibited the β-sheet conformation transition and promoted the crystallization of silk ***,copper or silver NPs obviously enhanced the thermal stability and mechanical properties of silkworm silk with a coupling competitive *** study expands our ability to obtain distinctive reinforced silkworm silks in a green and effective way and to gain an elementary comprehension of nano-bio interactions between a model organism,Bombyx mori silkworm,and metallic nanoparticles.