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随着人们对环境保护意识的增加和地球有限资源的缺乏,大豆蛋白在胶粘剂工业中的应用也越来越显示出强大的吸引力,鉴于前人的研究成果,文章研究了大豆7S和11S球蛋白经过尿素变性后在松木、樱桃木和胡桃木上的粘接强度和湿润能力。结果表明在不同的木块上不同胶粘剂有不同的粘接强度和湿润性能。7S大豆蛋白尿素变性后在硬木上有较好的湿润性。1M尿素变性赋予11S蛋白的粘接强度最高,3M尿素变性后,7S蛋白在硬木上的粘接强度大于11S蛋白。蛋白质的二级结构测量表明β-折叠对于3 M尿素变性后的大豆蛋白在硬木上的粘接强度起着重要作用,而无规则卷曲是降低1 M尿素变性7S大豆蛋白粘接强度的主要因素。
With the increasing awareness of environmental protection and the lack of limited resources on the earth, the application of soybean protein in the adhesive industry is also increasingly showing a strong attraction. In view of previous research results, soybean 7S and 11S Protein denaturation after urea on pine, cherry and walnut adhesive strength and wetting ability. The results show that different adhesives have different adhesive strength and wetting properties on different wood blocks. 7S soy protein urea has good wetting on hardwoods. 1M urea denaturation gives 11S protein the highest adhesive strength, 3M urea denatured, 7S protein in hardwood adhesive strength greater than 11S protein. Secondary structure measurements of proteins indicate that β-sheet plays an important role in the bonding strength of 3-U-denatured soy protein to hardwood, whereas random curling is a major factor in reducing the bond strength of 1-M urea denatured 7S soy protein .