分散型速溶黄原胶DIXG的制备与评价

Preparation and Evaluation of a Dispersible Instant Xanthan Gum

以烷基金属有机物NA为改性剂,以无水乙醇为分散介质,在酸性条件下进行了黄原胶的疏水改性,同时对所制备分散型速溶黄原胶(DIXG)进行了分散性能、溶解性能和流变性能的评价。评价实验结果表明,DIXG的分散性和溶解速度明显优于国内的分散型黄原胶产品,而流变性基本不变,不降低黄原胶的使用性能。

Xanthan gum was hydrophobically modified using NA,an alkylated organometallic compound,as modifying agent,and absolute ethanol as dispersion medium under acidic condition.The prepared dispersible instant xanthan gum,DIXG,was evaluated for its dispersing capacity,dissolubility and rheology.Experiment results showed that DIXG has dispersing capacity and dissolubility that are better than dispersible xanthan gum produced in China,with its rheology being the same as other samples.