【摘要】 为促进笋头的高值化利用,利用富含纤维素的竹笋笋头进行纳米纤维素晶体(cellulose nanocrystal,CNC)的制备。以福建省绿竹笋笋头为原料,通过粉碎、前处理和硫酸水解法进行笋头纳米纤维素晶体的制备,并研究其持水力、持油力和膨胀力等理化性质。结果表明:笋头是制备纳米纤维素晶体的适宜原料,经过硫酸水解后笋头纳米纤维素晶体的理化性质得到显著改良。通过硫酸水解法制备的笋头纳米纤维素晶体的得率为49.54%,粒径为91.87nm;相对于笋头粗纤维,笋头纳米纤维素晶体的持水力、持油力和膨胀力分别提高了99.54%、29.80%和81.15%。更多还原

【Abstract】 In order to promote the high-value utilization of bamboo shoots,the cellulose nanocrystal(CNC)was prepared by bamboo shoots rich in cellulose.By taking the green bamboo shoots in Fujian Province as the raw materials,the cellulose nanocrystal of bamboo shoots was prepared by means of crushing,pretreatment and sulphuric acid hydrolysis method.Then,the physical and chemical properties such as water-holding power,oil-holding power and expansive force were studied.The results showed that the bamboo shoot was an appropriate raw material for the preparation of cellulose nanocrystal.After the sulfuric acid hydrolysis,the physicochemical properties of cellulose nanocrystal in bamboo shoots were improved significantly.The yield of the cellulose nanocrystal in bamboo shoots prepared by the sulfuric acid hydrolysis method was 49.54% and the particle size was 91.87 nm.Compared with the crude fibre of bamboo shoots,the water-holding power,oil-holding power and expansive force of cellulose nanocrystal in bamboo shoots were increased by 99.54%,29.80% and 81.15%respectively.更多还原