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Thermo-/pH-responsive preservative delivery based on TEMPO cellulose nanofiber/cationic copolymer hydrogel film in fruit packaging

文献类型： 外文期刊

作者： Shaghaleh, Hiba 1 ; Hamoud, Yousef Alhaj 3 ; Xu, Xu 1 ; Liu, He 2 ; Wang, Shifa 1 ; Sheteiwy, Mohamed 4 ; Dong, Fuhao; 1 ;

作者机构： 1.Nanjing Forestry Univ, Jiangsu Key Lab Biomass Based Green Fuels & Chem, Jiangsu Prov Key Lab Chem & Utilizat Agroforest B, Coll Chem Engn,Coinnovat Ctr Efficient Proc & Uti, Nanjing 210037, Peoples R China

2.Chinese Acad Forestry, Inst Chem Ind Forestry Prod, Nanjing 210042, Peoples R China

3.Hohai Univ, Coll Agr Sci & Engn, Nanjing 210098, Peoples R China

4.Mansoura Univ, Fac Agr, Dept Agron, Mansoura 35516, Egypt

5.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Nanjing 210014, Peoples R China

6.Guangxi Univ Nationalities, Guangxi Collaborat Innovat Ctr Chem & Engn Forest, Guangxi Key Lab Chem & Engn Forest Prod, Nanning 530006, Peoples R China

关键词： Carboxyl-nanofibrillated cellulose; Poly(N-isopropyl acrylamide-co-acrylamide); Stimuli-responsive delivery; Natamycin release mechanism; Climacteric fruit; Emerging active packaging

期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：6.953； 五年影响因子：6.737 ）

ISSN： 0141-8130

年卷期： 2021 年 183 卷

页码：

收录情况： SCI

摘要： Hydrogels have great potential in food packaging. However, stimuli-responsive preservative delivery-based hydrogels for emerging active packaging have not yet been explored. Herein, Unprecedented pH/temperatureresponsive hydrogel films for emerging active climacteric fruit packaging were developed based on TEMPOoxidized nanofibrillated cellulose (TOCNFs) from wheat straw with food-grade cationic-modified poly(Nisopropyl acrylamide-co-acrylamide) (CPNIPAM-AM). TOCNF incorporation into CPNIPAM-AM revealed desirable enhancement of characterization, antimicrobial properties, and pH/thermal-responsive behaviour. In-vitro delivery and release mechanism studies with natamycin revealed the fastest release rates in preferred low pH media, up to 32.1 times higher than that under neutral conditions via anomalous diffusion. Applying a thermal stimulus increased natamycin release rates, providing 1.5-21% gradual-additional pulses by Fickian diffusion. The final hydrogel film showed efficient decay control in response to stimuli of the climacteric fruit environment with safe, recyclable, and feasible application demonstrating the significant potential to be used as an alternative-sustainable material for stimuli-triggered preservative delivery in climacteric fruit packaging.

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