Antibacterial LDPE/GSE/Mel/ZnONP composite film-coated wrapping paper for convenience food packaging application

Smart and Active Food Packaging: Insights in Novel Food Packaging

“…AFP also showed their potential in preventing the coliform bacteria growth during food storage. By employing ZnONP and integration with polymeric films such as lowdensity polyethylene (LDPE)-based nanocomposite, the coliform bacterial growth was significantly delayed while the neat LDPE could not prevent bacteria (Shankar et al, 2019). In this study, the authors also used grapefruit seed extract (GSE) along with ZnONP to promote antibacterial effects in AFP; thereby, it was reported that the release of flavonoids, which are polyphenolic in structure, might be the reason for the antimicrobial activity of GSE.…”

“…According to previous studies, flavonoids can diffuse into bacterial membranes and then react with cellular proteins or cytoplasm to destroy bacteria (Corrales et al, 2009;Wang and Rhim, 2016). Generally, the antimicrobial and antibacterial performance of nanoparticles in AFP has been hypothesized to be due to (i) nanoparticle contact with the cell wall of the microorganism directly which damages the bacterial cell, (ii) interference with protein synthesis and the release of Zn 2+ ions that participate with DNA replication, and (iii) generation of reactive oxygen species (ROS) which degrade bacterial cells (Shankar et al, 2019). Scientists, to promote more reliable and safer antibacterialbased AFP, employed natural antibacterial agents such as essential oils (EOs) due to their potent antibacterial properties, low price, accessibility, and nontoxicity properties to enhance the shelf life of foods packed with biocompatible materials (Brobbey, 2017;Ju et al, 2019;Sharma et al, 2020a).…”

Preparation of low‐density polyethylene‐ and poly (lactide)/poly (butylene adipate‐co‐terephthalate)‐based antibacterial films integrated with elemental sulfur and sulfur nanoparticles

“…Food packaging is used to prevent the degradation of food quality caused by various factors such as chemical, physical, biological and enzymatic reactions and prevent the contamination and growth of harmful microorganisms, thereby extending the shelf life of food and ensuring safety. Low‐density polyethylene (LDPE) film is one of the most widely used food packaging materials intended to contact food because it has excellent film performance characteristics such as high strength, high water vapour barrier and water resistance, good chemical resistance, lightweight, good processability and economy 1–3 . With the development of nanomaterials‐added packaging and active packaging technologies, attention in active antibacterial packaging maintains product quality and safety by integrating functional nanomaterials into packaging films to extend the shelf life of food by preventing the growth of harmful microorganisms is increasing 4–6 .…”

“…Various types of active antimicrobial nanoparticles, such as Ag, CuO, TiO 2 and ZnO nanoparticles, have been used to prepare PE‐based nanocomposite films 1,2,8–10 . The antimicrobial activity of nanoparticles plays an essential role in food packaging films by controlling foodborne pathogens and improving the physicochemical properties of packaging films.…”

Chemical Recovery From Polystyrene Waste and Low Density Polyethylene via Conventional Pyrolysis

“…PET, LDPE, High Density Polyethylene (HDPE), PVC, PS and PP form thermoplastic resources (Francis, 2016). Water bottles, detergent bottles, food packaging materials, window profiles, coffee cups, microwave food trays are the well-known products of PET, HDPE, LDPE, PVC, PS and PP respectively (Doddamani, 2020;Ko, Kwon, Lee and Jeon, 2020;Lambert and Wagner, 2016;Shankar, Bang and Rhim, 2019;Vallabhy, Arun Kumar, Bharath, Dhakshina Moorthy and Jain, 2019;Zhao, Hu and Luo, 2020). In Europe, PP is the most consumed plastic type (10 Million Tons) in 2017.…”