| One-step solvent media process to produce hydroxypropyl guar gum(HPG)is developed,endosperm splits are modified and directly pulverized into HPG powder.The influences of the factors,such as ethanol solution,sodium hydroxide, propylene oxide,reaction temperature,reaction time on apparent viscosity and water insoluble substance of HPG are studied.The synthetic process technology fators are provided as follows: the mass fraction of ethanol solution is 75%,the mass ratio of sodium hydroxide to endosperm splits ... |