摘要
本文用扫描电镜研究了温度、超声波处理及浓度对黄原胶分子形貌的影响,并用透射电镜研究了黄原胶单分子的形貌及分子量。认为黄原胶分子在一般情况下具有较规则的二、三、四级结构,论述了其初、高级结构之间的关系,得出了黄原胶分子是由40余个亚基组成的右手双螺旋这一结论,计算出其分子量为6×10~6至25×10~6。
A scanning electron-microscope is used to study the affection of temperature, ultrasonic waves and different concentrations on the appeearance of xanthan gums. A transmissive electr-onmicroscope is used to study the appearance and molecular weight of the monomolecules of xanthan. A conclusion can be drawn that xanthan molecules have uniform secondary, tertiary and quantenary structures, and that the xanthan molecule is a right-handed double helix made up of 40 subunits. The relation between their primery and senior structures has also been stated. Its molecular weight is from 6,000,000 to 25,000,000.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1990年第1期60-66,共7页
Acta Polymerica Sinica
基金
国家自然科学基金资助课题
关键词
黄原胶
形貌
结构
亚基分子量
xanthan, appearance, structure, subunit, molecular weight
