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A STUDY ON CHEMICAL COMPOSITION AND STRUCTURE OF THE SILK DRAWN BY THE SILKWORMS RAISED WITH ARTIFICIAL FEEDSTUFF

人工饲料蚕丝化学成分与结构的研究

基本信息

批准号：
05454064
负责人：
SUGIMOTO Hiroko
金额：
$ 4.61万
依托单位：
KYOTO UNIVERSITY OF EDUCATION
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1993
资助国家：
日本
起止时间：
1993 至 1994
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05454064/
关键词：
The cocoon made by artificial feedstuf Mulberry bred cocoons silk Amino acid composition Yellowing OKARA Dissoluble properties 人工飼料育蚕糸オカラ50%含有人工飼料標準人工飼料練減率結晶構造結晶化度繭糸成績

项目摘要

Although there have hitherto been published many on how to breed silkworms, we are sorry there mental properties of cocoons and silkworms.In this study, we have made clear the correlations between the composition of proteins as well as the chemical structure of the silk obtained from the silkworms raised with artificial feedstuff and those of the silk obtained from the silkworms raised with natural mulberry leaves in consideration of their raising conditions and the structural features of silk.As the samples, we used these 3 kinds of samples such as "OKARA 50% comprised silk (OKARA 50 silk or cocoon silk)", "Mainly de-fatted soybeans powder (Standard feedstuff silk or cocoons silk)", and "Mulberry bred cocoons silk (Mulberry bred cocoons silk)" in terms of feedstuff.Next, we have examined of such properties of the silks mentioned avove as the quality, yarns drawing workability, behavior in degumming, sericin, fibroin's amino acid composition, crystal structure, degree of crystallizatio … More n, and yellowing, etc.As the result of our study mentioned above, the followings have been made clear :(1) OKARA 50 silk has a low rate of degumming, a high rate of exfoliation, and less branched textile.(2) The fibroin's amino acid composition and crystal structure of OKARA 50 silk are found little different from those of raw silk.(3) The content of sericin of OKARA 50 silk is found more than that of mulberry raw silk.(4) The sericin comprised in OKARA 50 silk has an extremely high initial dissolution that is approx. 2 times that of raw silk. Four graduations whose dissoluble properties are different from each other have been obtained.(5) As for the yellowing to the irradition of ultra-violet rays, raw silk is found the most among them and OKARA 50 silk is found little. Such cause is guessed that OKARA 50 silk in comparison with raw silk has been detected of its comprising much such deoxycytidine mono phosphate (dCMP) or cytidylic acid (CMP) as absorbing ultraviolet rays around 260nm of the first graduation of the sericin comprised therein and that raw silk treated with dCMP and CMP in comparison with that not treated with them has been found less yellowing. Thus, it has been admitted that dCMP and CMP have taken much part in prevention of yellowing. Less

尽管迄今为止已经发表了许多关于如何养蚕的文章，但我们对茧和蚕的心理特性感到遗憾。在这项研究中，本文从家蚕的饲养出发，阐明了人工饲料蚕和天然桑葚蚕的蛋白质组成和化学结构之间的相关性作为样品，我们使用了“奥卡拉50%包含蚕丝”等3种样品，（奥卡拉50丝或茧丝）"、“主要是脱脂大豆粉（标准饲料丝或蚕茧丝）"、“桑葚育茧丝（桑葚育茧丝）”的饲料特性。其次，对上述蚕丝的品质、抽丝性能、脱胶性能、丝胶含量、丝素蛋白的氨基酸组成，晶体结构，结晶度 ...更多信息结果表明：（1）奥卡拉50蚕丝脱胶率低，剥离率高，织物支化少; (2)奥卡拉50蚕丝的丝素蛋白的氨基酸组成和晶体结构与生丝相差不大。(3)奥卡拉50生丝的丝胶含量高于桑葚生丝。(4)包含在奥卡拉50丝中的丝胶蛋白具有极高的初始溶解度，其约为0.01%。是生丝的2倍。得到了四种溶解性能不同的分级方法。(5)在紫外线照射下，生丝的泛黄率最高，奥卡拉50丝的泛黄率最低。这种原因被推测为与生丝相比，奥卡拉50丝已被检测到其包含大量的脱氧胞苷一磷酸（dCMP）或胞苷酸（CMP），如在其中所包含的丝胶蛋白的第一级的260 nm附近吸收紫外线，并且发现用dCMP和CMP处理的生丝与未用它们处理的生丝相比，变黄较少。因此，人们承认dCMP和CMP在防止泛黄方面发挥了重要作用。少