层层自组装可食用保鲜膜的性能探究
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摘要
目的对可食用保鲜膜的性能进行拓展。方法采用层层自组装静电沉积法制备可食用水果保鲜膜,并对膜进行表征,探究膜的微观结构、透明度、亲疏水性、自修复性等。结果该可食用膜结构致密,具有较好的透明度,透光率在90%以上;具有较好的疏水性,接触角θ约为102°;能实现形貌和力学性能上的修复,修复前后的膜都能负载200 g的砝码,同时都无法负载300 g的砝码。结论可食用保鲜膜的这些性能提高了该可食用膜的保鲜效果。
The work aims to extend the properties of edible fresh-keeping film.Edible fruit fresh-keeping film was prepared with the layer-by-layer self-assembly electrostatic deposition technology.Meanwhile, the microstructure, transparency, hydrophilic-hydrophobic property and self-healing ability of the edible film were characterized.The edible film was of dense microstructure and high transparency, with the transmittance above 90%; the film was of high hydrophobicity and the contact angle θ was about 102°; the edible film could self-heal morphologically and mechanically and the edible film and self-healed film could hold the weight of 200 g and could not hold the weight of 300 g.It is concluded that these properties of edible fresh-keeping film have improved the fresh-keeping effect of the edible film.
The work aims to extend the properties of edible fresh-keeping film.Edible fruit fresh-keeping film was prepared with the layer-by-layer self-assembly electrostatic deposition technology.Meanwhile, the microstructure, transparency, hydrophilic-hydrophobic property and self-healing ability of the edible film were characterized.The edible film was of dense microstructure and high transparency, with the transmittance above 90%; the film was of high hydrophobicity and the contact angle θ was about 102°; the edible film could self-heal morphologically and mechanically and the edible film and self-healed film could hold the weight of 200 g and could not hold the weight of 300 g.It is concluded that these properties of edible fresh-keeping film have improved the fresh-keeping effect of the edible film.
引文
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[15]REUTENAUER P,BUHLER E,BOUL P J,et al.Room Temperature Dynamic Polymers Based on Diels-Alder Chemistry[J].Chem Eur J,2009,15:1893—1900.
[16]ZHANG R,FANG G,MA Y,et al.Characterization of Chitosan-carboxymethyl Cellulose Blended Membrane[J].Chem Ind For Prod,2010,30:43—48.
[17]YING Y,MAREK W,U,2013.Self-healing Polymeric Materials[J].Chem Soc Rev,2013,42:7446—7467.
[2]PAVLATH A E,ORTS W.Edible Films and Coatings:Why,What,and How?In M E Embuscado&K C Huber(Eds)[C]//Edible Films and Coatings for Food Applications,New York:Springer,2009:1—23.
[3]BALDWIN E A,HAGENMAIEr R,BAI J.Edible Coating and Films to improve Food Quality[M].USA:CRC Press,Tailor&Francis Group,2011.
[4]PARK H J.Development of Advanced Edible Coatings for Fruits[J].Trends in Food Science and Technology,1999,10:254—260.
[5]ARNON H,GRANIT R,PORAT R,et al.Development of Polysaccharides-based Edible Coatings for Tangerines[J].A layer-by-layer approach.Food Chemistry,2015,166:465—472.
[6]ARNON H,ZAITSEV Y,PORAT R,et al.Effects of Carboxymethyl Cellulose and Chitosan Bilayer Edible Coating on Postharvest Quality of Citrus Fruit[J].Postharvest Biol Technol,2014,87:21—26.
[7]张锐.羧甲基纤维素-壳聚糖复合物的制备及对乳糖酶的固定化研究[D].哈尔滨:东北林业大学,2010.ZHANG Rui.The Fabrication of Carboxymethycellulose-Chitosan Compound and Its Immobilization Research to Lactase[D].Harbin:Northeast Forestry University,2010.
[8]ZENG M,FANG Z.Preparation of Sub-micrometer Porous Membrane from Chitosan/polyethylene Glycol Semi-IPN[J].Jounal of Membrane Science,2004,245:95—102.
[9]NURAJE N,ASMATULU R,COHEN R E,Rubner M F.Durable Antifog Films from Layer-by-1ayer Molecularly Blended Hydrophilic Polysaccharides[J].Langmuir,2011,27:782—791.
[10]DECHER G,HONG J D.Buildup of Ultrathin Multilayer Films by a Self-assembly Process,Consecutive Adsorption of Anionic and Cationic Bipolar Amphiphiles on Charged Surfaces J].Makromol Chem Macromol Symp,1991,46:321—327.
[11]WU T,FARNOOD R.Cellulose Fibre Networks Reinforced with Carboxymethyl Cellulose/chitosan Complex Layer-by-layer[J].Carbohydrate Polymers,2014,114:500—505.
[12]FANG Y,TUNG M A,BRITT I J,et al.Tensile and Barrier Properties of Edible Films Made from Whey Proteins[J].Journal of Food Science,2002,67:188—193.
[13]NEWMAN A W,KWOK D Y.Contact Angle Measurement and Contact Angle Interpretation[J].Adv Colloid Interface Sci,1999,81:167—249.
[14]RIBEIRO C,VICENTE A A,TEIXEIRA J A,et al.Optimization of Edible Coating Composition to Retard Strawberry Fruit Senescence[J].Postharvest Biology and Technology,2007,44:63—70.
[15]REUTENAUER P,BUHLER E,BOUL P J,et al.Room Temperature Dynamic Polymers Based on Diels-Alder Chemistry[J].Chem Eur J,2009,15:1893—1900.
[16]ZHANG R,FANG G,MA Y,et al.Characterization of Chitosan-carboxymethyl Cellulose Blended Membrane[J].Chem Ind For Prod,2010,30:43—48.
[17]YING Y,MAREK W,U,2013.Self-healing Polymeric Materials[J].Chem Soc Rev,2013,42:7446—7467.