摘要
采用60Co-γ射线对0.5g/100mL透明质酸氯化钠溶液进行辐照处理,通过溶液的pH值、黏度值、色度和红外光谱及紫外光谱等变化研究辐照对透明质酸理化特性的影响。结果表明:辐照降低透明质酸的分子质量、pH值、特性黏度,溶液的颜色比未辐照的更黄。通过紫外和红外扫描观察,透明质酸在辐照前后的吸收特征峰没有太大的变化,吸收强度发生变化。辐照后透明质酸对DPPH自由基的清除作用随着辐照剂量的增大逐渐增强。
The 60Co-γ irradiation treatment on 0.5 g/100mL hyaluronic acid （HA） with sodium chloride solution was used to explore the effect on its physico-chemical properties such as solution pH, viscosity, color and infrared spectroscopy and UV spectra. The results demonstrated that the irradiation treatment could decrease molecular weight, viscosity and pH of hyaluronic acid, and result in enhanced yellow color. In addition, no obvious change in absorption characteristic peaks of UV and FT-IR for the irradiated hyaluronic acid solution was observed; however, its absorption intensity was changed due to the irradiation treatment. Moreover, the irradiated hyaluronic acid exhibited a gradual increase trend of scavenging capability on DPPH free radicals in a dose-dependent manner.
出处
《食品科学》
CAS
CSCD
北大核心
2011年第3期117-120,共4页
Food Science
关键词
透明质酸
辐照
降解
理化特性
hyaluronic acid
irradiation
depolymerization
physico-chemical property
