scholarly journals Silver Nanocluster-Embedded Zein Films as Antimicrobial Coating Materials for Food Packaging

2017 ◽  
Vol 9 (40) ◽  
pp. 35297-35304 ◽  
Author(s):  
Lei Mei ◽  
Zi Teng ◽  
Guizhi Zhu ◽  
Yijing Liu ◽  
Fuwu Zhang ◽  
...  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Yanan Li ◽  
Rina Wu ◽  
Jiahui Shi ◽  
Gaosheng Wang

Abstract Coated paper with enhanced barrier properties was prepared via a simple layered self-assembly method using hemicellulose and starch as biobased coatings. Effect of the coating on properties of cellulose paper was investigated. Barrier properties of the paper was increasingly strengthened as the coating amount of hemicellulose rose. When the paper was coated with starch (10.7±0.3  g / m 2 \text{g}/{\text{m}^{2}} ) and hemicellulose (6.9±0.2  g / m 2 \text{g}/{\text{m}^{2}} ) successively, the oil resistance of the paper was increased from 0 to grade 7. Air permeability and water vapor transmittance was decreased by 93.8 % and 39.7 %, respectively. The water contact angle of the coated paper reached 91.7° when the amount of hemicellulose was 1.5±0.2  g / m 2 \text{g}/{\text{m}^{2}} . The hydrophobicity of the coated paper was superior to the original paper although it was negatively influenced by the increasing amount of hemicellulose. The improvement of barrier properties of the coated paper was mainly ascribed to the formation of a thin polymer network on paper surface through intermolecular interaction via hydrogen bonds as demonstrated in SEM and FTIR-ATR results. Moreover, tensile strength and rupture resistance of the coated paper was improved. The results offered an environmentally friendly and economical strategy for preparation of food packaging paper with good barrier properties using biobased coating materials.


2019 ◽  
Vol 16 (6/7/8/9/10) ◽  
pp. 436
Author(s):  
S.V. Lutsenko ◽  
T.I. Gromovykh ◽  
N.B. Feldman ◽  
M.H. Phan ◽  
T.N. Le Thi

2012 ◽  
Vol 126 (S1) ◽  
pp. E362-E373 ◽  
Author(s):  
Weili Li ◽  
David R. Coffin ◽  
Tony Z. Jin ◽  
Nicolas Latona ◽  
Cheng-Kung Liu ◽  
...  

Author(s):  
OSYKA Victor ◽  
KOMAKHA Olha ◽  
KOMAKHA Volodymyr

Background. Packaging materials that are intended for contact with food are subject to the strictest requirements for their safety. When choosing packaging material for such products, first of all it is necessary to ensure the required level of sanitary and hygienic characteristics. The aim of the study is to assess the safety of moisture-resistant waterproof and moisture-resistant and water-resistant waterproof PPM (paper packaging materials) with a polymer coating. Materials and methods.The object of the study is PPM, made by processing the base paper with coatings based on PVA (polyvinyl alcohol) and PAAEX (polyamidamine-pichlorohydrin). The safety of the developed packaging materials was assessed by organoleptic and physicochemical methods for the presence of foreign tastes and odors, the level of migration of vinyl acetate and epichlorohydrin, the content of zinc, lead, cadmium and microbiological indicators by standard methods. Results. Packaging paper must meet the requirements of current regulations in terms of quality, and its use is allowed subject to compliance with state sanitary norms. Studies of organoleptic characteristics of extracts of paper packaging materials did not reveal the presence of foreign tastes and odors. Determination of the amount of migration of harmful substances, namely vinyl acetate and epichlorohydrin, showed that the transition of the components of the solutions, which are impregnated with paper materials is within acceptable limits. The content of zinc and lead was 25 and 3 times less than the maximum allowed by regulations. The microbiological parameters of the developed paper packaging materials meet the regulatory requirements and allow their use for food packaging. Conclusion. Developed new types of paper packaging materials on the level of migration of toxic compounds (vinyl acetate, epichlorohydrin), heavy metal content and microbiological indicators meet the requirements for packaging both food and non-food products of pharmaceutical, medical, cosmetic and other industries.


Polymers ◽  
2021 ◽  
Vol 13 (21) ◽  
pp. 3640
Author(s):  
Vito Gigante ◽  
Luca Panariello ◽  
Maria-Beatrice Coltelli ◽  
Serena Danti ◽  
Kudirat Abidemi Obisesan ◽  
...  

The development of new bio-based coating materials to be applied on cellulosic and plastic based substrates, with improved performances compared to currently available products and at the same time with improved sustainable end of life options, is a challenge of our times. Enabling cellulose or bioplastics with proper functional coatings, based on biopolymer and functional materials deriving from agro-food waste streams, will improve their performance, allowing them to effectively replace fossil products in the personal care, tableware and food packaging sectors. To achieve these challenging objectives some molecules can be used in wet or solid coating formulations, e.g., cutin as a hydrophobic water- and grease-repellent coating, polysaccharides such as chitosan-chitin as an antimicrobial coating, and proteins as a gas barrier. This review collects the available knowledge on functional coatings with a focus on the raw materials used and methods of dispersion/application. It considers, in addition, the correlation with the desired final properties of the applied coatings, thus discussing their potential.


2020 ◽  
Vol 25 ◽  
pp. 100522
Author(s):  
David J. Sullivan ◽  
Malco C. Cruz-Romero ◽  
Ana B. Hernandez ◽  
Enda Cummins ◽  
Joseph P. Kerry ◽  
...  

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