白果壳纤维素纳米丝(CNFs)的制备及其在Pickering中的应用  

Preparation of Cellulose Nanofibrils(CNFs)and its Application in Pickering

作　　者：范柳萍[1] 倪洋 段慧 李进伟[1] FAN Liu-ping;NI Yang;DUAN Hui;LI Jin-wei(School of Food Science and Technology,Jiangnan University,Wuxi,Jiangsu 214122,China)

机构地区：[1]江南大学食品学院,无锡214122

出　　处：《粮油食品科技》2021年第3期54-60,共7页Science and Technology of Cereals,Oils and Foods

基　　金：国家自然科学基金(32072138)。

摘　　要：以白果壳纤维素为原料,采用高压均质处理制备纤维素纳米丝(CNFs),并研究其在Pickering乳液中的应用。结果表明,通过调节均质压力10~70MPa可以制备出不同尺寸的CNFs,均质压力越高,CNFs尺寸越小。这些不同尺寸的纤维素展现出不同的物理性质,大尺寸的CNFs-10具有相对高的结晶度和亲水性,而小尺寸的CNFs-70展现出低结晶度和高疏水性。Pickering乳液的稳定性跟CNFs性质有着密切的关系,大尺寸和高亲水性的CNFs-10制备的乳液具有差的稳定性,而小尺寸和高疏水性的CNFs-70制备的乳液展现出色的稳定性。这些结果证明了CNFs也可以制备出稳定的Pickering乳液,为果壳废料的利用提供一定的方法。Ginkgo seed shells were used as raw material in this study.The high-pressure homogenization(HPH)was applied to prepare CNFs and its applications in Pickering emulsions were studied.The results showed that CNFs with different size can be obtained by altering homogenization pressure ranging from 10~70 MPa.The higher the homogenization pressure,the smaller the size of CNFs.Moreover,these CNFs with different size exhibited different physical properties.CNFs-10 with large size showed higher crystallinity and hydrophilcity,while CNFs-70 with small size had lower crystallinity and higher hydrophobicity.Additionally,the stability of emulsions was closely related to properties of CNFs.The emulsion prepared with large size and high hydrophilic CNFs-10 has poor stability,while the emulsion prepared by CNFs-70 with small size and high hydrophobicity shows excellent stability.These results prove that CNFs can also produce stable Pickering emulsions which providing a certain method for the utilization of shell waste.

关 键 词：纤维素纳米丝 Pickering乳液 白果壳 高压均质 接触角 

分 类 号：TS201.4[轻工技术与工程—食品科学]