无籽刺梨纳米纤维特性及其对大豆分离蛋白膜性能的影响  

Properties of the nanocellulose from Rosa sterilis cellulose and their effects on properties of the soybean protein isolate film

作　　者：胡文瑾 陈相雨 孙雪 毕会敏 范方宇 HU Wenjin;CHEN Xiangyu;SUN Xue;BI Huimin;FAN Fangyu(College of Life Science,Southwest Forestry University,Kunming 650224,China)

机构地区：[1]西南林业大学生命科学学院,云南昆明650224

出　　处：《食品与发酵工业》2023年第6期105-110,共6页Food and Fermentation Industries

基　　金：2020年云南省大学生创新创业训练项目(202010677026);国家自然科学基金(31760470);云南省“万人计划”青年拔尖人才专项资助(YNWR-QNBJ-2018-046);云南省一流本科专业建设(519014)。

摘　　要：该文以无籽刺梨果渣为原料,采用硫酸水解法制备无籽刺梨纳米纤维(Rosa sterilis cellulose-nanocrystalline cellulose,RSC-NCC),利用扫描电镜(scanning electron microscopy,SEM)、透射电镜(transmission electron microscopy,TEM)、X-射线衍射(X-ray diffraction,XRD)、傅里叶变换红外光谱(Fourier transform infrared spectroscopy,FTIR)及差示扫描量热仪(differential scanning calorimetry,DSC)等技术研究RSC-NCC性质。同时,以大豆分离蛋白(soybean protein isolate,SPI)为成膜基材,研究了RSC-NCC对SPI膜性能的影响,并结合SEM、DSC、FTIR、XRD分析了RSC-NCC/SPI膜的微结构。结果表明,RSC-NCC直径约10 nm,长约500 nm,保留了纤维素的基本化学结构,结晶度较高,熔融温度100℃。RSC-NCC使SPI膜的透水透气性降低,机械性能增强;通过SEM、DSC、FTIR和XRD分析发现,RSC-NCC和SPI具有良好的相容性,复合膜结构致密性提高,稳定性增强。The nanocellulose from the Rosa sterilis residues(RSC-NCC)was prepared by the sulfuric acid hydrolysis method.The properties of RSC-NCC were studied by scanning electron microscopy(SEM),transmission electron microscopy(TEM),X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FTIR),and differential scanning calorimetry(DSC).Meanwhile,the effect of RSC-NCC on the properties of soybean protein isolate(SPI)film was studied,and the microstructure of RSC-NCC/SPI film was analyzed by SEM,DSC,FTIR,and XRD.Results indicated that RSC-NSS had a diameter of about 10 nm and a length of about 500 nm,high crystallinity,and 100℃of melting temperature,and retained the basic chemical structure of cellulose.The addition of RSC-NCC reduced the permeability and enhanced the mechanical properties of SPI film.SEM,DSC,FTIR,and XRD analysis showed that RSC-NCC and SPI had good compatibility,and the structure compactness and stability of the film were improved.

关 键 词：无籽刺梨果渣 纳米纤维素 大豆分离蛋白 复合膜 

分 类 号：TS201.2[轻工技术与工程—食品科学]