Carbon dots(CDs)with intriguing fluorescent property,good biocompatibility,high stability,easy in-teraction with substrates,are burgeoning carbon nanoparticles with large potential in various applica-tions.Incorporating CDs into the polymer matrix is becoming a popular strategy to endow the com-plex with new functions.Herein,the green-synthesized CDs was integrated into the mixture of gelatin(derived from waste fish scale)and chitosan,and a multifunctional bio-nanocomposite(defined as Gelatin/Chitosan/CDs)film was developed,which showed the excellent antibacterial,antioxidant,pH-sensitivity,UV shielding,and blue-emission properties.The effects of different concentrations of CDs on the physical,mechanical,structural,and functional activity of bio-nanocomposite film were tested.Com-pared with the Gelatin/Chitosan film,the Gelatin/Chitosan/CDs film with an optimum addition of 20％CDs showed the enhanced antibacterial,antioxidant as well as UV shielding activities.More importantly,it was used as an effective packaging material for fish meat preservation,reducing the loss of nutritional quality consumption,extending the shelf life of food.Besides,the bio-nanocomposite films also possessed the anti-counterfeiting and pH-responsive properties due to the strong fluorescent emission of CDs,and had the great potential in developing the intelligent packaging materials.Our work shed new light on the new application of CDs and the synthesis of bio-nanocomposite film in food industry.

Bofei Fu;Qiaoling Liu;Minghuan Liu;Xiaofang Chen;Hetong Lin;Zongping Zheng;Junqiu Zhu;Congjie Dai;Xiaochen Dong;Da-Peng Yang

Key Laboratory of Chemical Materials and Green Nanotechnology,College of Chemical Engineering and Materials Science,Quanzhou Normal University,Quanzhou 362000,China;College of Food Science,Fujian Agriculture and Forestry University,Fuzhou 350002,China;Department of Clinical Laboratory,The Second Affiliated Hospital of Fujian Medical University,Quanzhou 362000,China;Fujian Province Key Laboratory for Preparation and Function Development of Active Substances from Marine Algae,College of Oceanology and Food Science,Quanzhou Normal University,Quanzhou 362000,China;School of Physical and Mathematical Sciences,Nanjing Tech University,Nanjing 211800,China

中国化学快报（英文版）

[1]Bofei Fu;Qiaoling Liu;Minghuan Liu;Xiaofang Chen;Hetong Lin;Zongping Zheng;Junqiu Zhu;Congjie Dai;Xiaochen Dong;Da-Peng Yang-.Carbon dots enhanced gelatin/chitosan bio-nanocomposite packaging film for perishable foods)[J].中国化学快报（英文版）,2022(10):4577-4582

perishable

Carbon,dots,enhanced,gelatin,chitosan,nanocomposite,packaging,foods,CDs,intriguing,fluorescent,property,good,biocompatibility,high,stability,easy,teraction,substrates,burgeoning,carbon,nanoparticles,large,potential,various,Incorporating,into,polymer,matrix,becoming,popular,strategy,endow,plex,new,functions,Herein,green,synthesized,integrated,mixture,derived,from,waste,fish,scale,multifunctional,defined,Gelatin,Chitosan,developed,which,showed,excellent,antibacterial,antioxidant,sensitivity,UV,shielding,blue,emission,properties,effects,different,concentrations,physical,mechanical,structural,activity,were,tested,Com,pared,optimum,addition,well,activities,More,importantly,used,effective,meat,preservation,reducing,loss,nutritional,quality,consumption,extending,shelf,life,Besides,films,also,possessed,counterfeiting,responsive,due,strong,had,great,developing,intelligent,materials,Our,work,shed,light,application,synthesis,industry

0.53892