scholarly journals Research of the Influence of the Ultrasonic Treatment on the Melts of the Polymeric Compositions for the Creation of Packaging Materials with Antimicrobial Properties and Biodegrability

Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 275 ◽  
Author(s):  
Irina Kirsh ◽  
Yuliya Frolova ◽  
Olga Bannikova ◽  
Olga Beznaeva ◽  
Isabella Tveritnikova ◽  
...  
Keyword(s):  
Ultrasonic Treatment ◽  
Antimicrobial Properties ◽  
Thermoplastic Starch ◽  
Bark Extract ◽  
Vapor Permeability ◽  
Birch Bark ◽  
Packaging Materials ◽  
Polymer Mixtures ◽  
Modern Approach ◽  
The Creation

Ensuring the microbiological safety of food products is a problem of current interest. The use of antimicrobial packaging materials is a way of solving the problem. When developing packaging materials, it is advisable to use a modern approach based on the creation of biodegradable materials. The difficulty in the selection of the polymer compositions’ components lies in solving the dilemma of the joint introduction and processing of antimicrobial and biodegradable agents. The studies of the ultrasound treatment on the melts of polymer mixtures showed an increase in the dispersion process of the components of the mixture. In this regard, this work aimed to study the effect of the ultrasonic treatment on the melts of polymer compositions containing thermoplastic starch and birch bark extract (BBE). In the work, the properties of PE-based packaging materials with various BBE concentrations obtained with ultrasonic treatment of melts on a laboratory extruder were studied. Biodegradable polymer compositions containing thermoplastic starch and BBE, obtained with the use of the ultrasonic treatment during extrusion, were investigated. The methods for studying rheological, physic-mechanical, antimicrobial properties and sanitary chemical indicators of materials were used in the article. It was found that ultrasonic treatment increases the melt flow and contributes to the production of materials with the uniform distribution of additives. The BBE content from 1.0% and higher in the contents of the material provides antimicrobial properties. When studying the permeability of oxygen and water vapor of the polymer compositions based on PE and BBE, it was found that the introduction of a filler increases vapor permeability by about 8–12% compared with control samples. The optimal concentration of BBE in polyethylene compositions containing thermoplastic starch was determined. The extension of the shelf life of the food product during storage in the developed material was established.

scholarly journals Influence of the Ultrasonic Treatment on the Properties of Polybutylene Adipate Terephthalate, Modified by Antimicrobial Additive

Polymers ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2412
Author(s):  
Irina Kirsh ◽  
Yuliya Frolova ◽  
Olga Beznaeva ◽  
Olga Bannikova ◽  
Marina Gubanova ◽  
...  
Keyword(s):  
Polymer Matrix ◽  
Ultrasonic Treatment ◽  
Food Packaging ◽  
Mechanical Characteristics ◽  
Antimicrobial Properties ◽  
Point Of View ◽  
Bark Extract ◽  
Birch Bark ◽  
Modified Polymer ◽  
Antimicrobial Additive

Particular attention is paid to biodegradable materials from the environmental point of view and antimicrobial materials that ensure the microbiological safety of packaged products. The aim of the work was to study the properties of the composition, based on biodegradable polybutylene adipate terephthalate (PBAT) and the antimicrobial additive—birch bark extract (BBE). Test samples of materials were obtained on the laboratory extruder by extrusion with ultrasonic treatment of the melt. The concentration of the antimicrobial additive in the polymer matrix was 1 wt %. A complex research was carried out to study the structural, physico–mechanical characteristics, antimicrobial properties and biodegradability of the modified PBAT. Comparative assessment of the physico–mechanical characteristics of samples based on PBAT showed that the strength and elongation at break indices slightly decrease when the ultrasonic treatment of the melt is introduced. It was found out, that the antimicrobial additive in the composition of the polymer matrix at the concentration of 1 wt % has a static effect on the development of microorganisms on the surface of the studied modified films. Studies of the biodegradability of modified PBAT by composting for 4 months have shown that the decomposition period of modified materials increased, compared to pure PBAT. The developed modified polymer material can be recommended as an alternative replacement for materials based on polyethylene for food packaging.

Complexation with Hydroxypropyl-gama-Cyclodextrin of Birch Tree Extract Physico-chemical Characterisation of their Binary Products

2008 ◽  
Vol 59 (6) ◽  
Author(s):  
Codruta Soica ◽  
Cristina A. Dehelean ◽  
Valentin Ordodi ◽  
Diana Antal ◽  
Vicentiu Vlaia
Keyword(s):  
Inclusion Complexes ◽  
Water Solubility ◽  
In Vitro Dissolution ◽  
Molar Ratio ◽  
Bark Extract ◽  
Birch Bark ◽  
Preparation Methods ◽  
Birch Tree ◽  
Physico Chemical

Birch bark contains important pentacyclic triterpens that determine an anticancer, anti-inflammatory and antiviral activity. The compounds can be extracted by simple procedures with organic solvents. The major problem of this type of triterpens is their low water solubility which can be increased by physical procedures like cyclodextrin complexation. The aim of present study was to analyse the products between birch bark extract and hydroxypropyl-g -cyclodextrin. Hydroxypropyl-g -cyclodextrin (HPGCD) was used as a host to improve its solubility in water, via inclusion complex formation. In order to obtain the inclusion complexes, 1:2 molar ratio and two preparation methods (physical mixing, kneading) were used. The inclusion complexes were analyzed by in vitro dissolution tests, thermal analysis and X-ray diffraction.

scholarly journals Evaluation of the quality and safety of butter with an antioxidant complex of natural origin (birch bark extract and Aloe Vera)

2021 ◽  
Vol 640 (3) ◽  
pp. 032004
Author(s):  
A P Simonenkova ◽  
A V Mamaev ◽  
V N Masalov ◽  
O N Luneva ◽  
E N Demina ◽  
...  
Keyword(s):  
Aloe Vera ◽  
Bark Extract ◽  
Birch Bark ◽  
Quality And Safety ◽  
Natural Origin

scholarly journals Investigation of an Electrostatic Discharge Protective Biodegradable Packaging Foam in the Logistic Chain

2014 ◽  
Vol 5 (1) ◽  
pp. 25-33 ◽  
Author(s):  
Ákos Mojzes ◽  
Barnabás Tóth ◽  
Péter Csavajda
Keyword(s):  
Electrostatic Discharge ◽  
Technological Development ◽  
Environmental Parameters ◽  
Thermoplastic Starch ◽  
Vital Role ◽  
Packaging Materials ◽  
Negative Effects ◽  
Packaging System ◽  
Product Packaging ◽  
The One

Abstract Since the beginning of the 20th century, logistics has undergone a huge technological development, which has, however, resulted in many negative effects as well. The industry, particularly in the packaging industry has been a massive waste producer, although recently it has forced the use of new materials and it started to focus on environmentally friendly technologies. During the transportation of finished and semi-finished Electrostatic Discharge (ESD) sensitive products, the product packaging system has a vital role. These kind of packaging materials must be suitable to both logistic (protection against mechanical and environmental stresses) and special ESD protection requirements. During the transportation of printed-circuit electronic products, ESD defense is then of primary significance. However there is a huge disadvantage for the use of various shield bags. Namely, this kind of associated packaging is particularly pollutant, it causes a lot of inconvenience in the form of waste. In order to rule out these materials from the packaging system, new innovative solutions have to be found. The investigated TPS (thermoplastic starch biodegradable foam) is subjected to a validation, a long process to certify that this material unites properties of two types of packaging materials at the same time. On the one hand, this packaging foam has to meet the requirements product defense. On the other hand, the material must be anti-static under the logistic stress effects. In case it is found suitable, it can be an alternative of the conventional materials. In this article, we investigate the ESD characteristic of TPS foam. As this material sensitive for environmental parameters during transportation, we make the relevant Surface Resistance (Rs) tests on different temperature and humidity conditions. Based on result, the decision of the application can be done, as an ESD packaging material.

scholarly journals Quaternary Salts of Chitosan: History, Antimicrobial Features, and Prospects

2011 ◽  
Vol 2011 ◽  
pp. 1-12 ◽  
Author(s):  
Douglas de Britto ◽  
Rejane Celi Goy ◽  
Sergio Paulo Campana Filho ◽  
Odilio B. G. Assis
Keyword(s):  
Physical Chemistry ◽  
Antimicrobial Activity ◽  
Drug Delivery Systems ◽  
Antimicrobial Properties ◽  
Water Soluble ◽  
Chemical Characteristics ◽  
Packaging Materials ◽  
Inhibitory Effects ◽  
Quaternary Salts ◽  
Derivatives Of

Recently, increasing attention has been paid to water-soluble derivatives of chitosan at its applications. The chemical characteristics and the antimicrobial properties of these salts can play significant role in pharmacological and food areas mainly as carriers for drug delivery systems and as antimicrobial packaging materials. In the current paper, a historical sequence of the main preparative methods, physical chemistry aspects, and antimicrobial activity of chitosan quaternized derivatives are presented and briefly discussed. In general, the results indicated that the quaternary derivatives had better inhibitory effects than the unmodified chitosan.

Potassium sorbate release from poly(vinyl alcohol)-bacterial cellulose films

2012 ◽  
Vol 66 (2) ◽  
Author(s):  
Iuliana Jipa ◽  
Anicuta Stoica ◽  
Marta Stroescu ◽  
Loredana-Mihaela Dobre ◽  
Tanase Dobre ◽  
...  
Keyword(s):  
Bacterial Cellulose ◽  
Antimicrobial Properties ◽  
Potassium Sorbate ◽  
Poly Vinyl Alcohol ◽  
Packaging Materials ◽  
Cellulose Powder ◽  
Cellulose Films ◽  
Antimicrobial Materials ◽  
Biocomposite Films ◽  
The Subject

AbstractActive packaging materials are the subject of research because their performance exceeds that of traditional packaging. From this class, antimicrobial materials extend the shelf-life of products and reduce the risk of contamination by pathogens. In this paper, new composite materials with antimicrobial properties are obtained by using polyvinyl alcohol and bacterial cellulose powder. Potassium (2E,4E)-hexa-2,4-dienoate was used as the antimicrobial agent. The films thus obtained were characterised using Fourier-transform infrared spectroscopy and scanning electron microscopy. Mass transfer phenomena concerning the release of potassium (2E,4E)-hexa-2,4-dienoate were investigated. The results indicated that the new biocomposite films could be used as antimicrobial packaging materials.

scholarly journals From a Traditional Medicinal Plant to a Rational Drug: Understanding the Clinically Proven Wound Healing Efficacy of Birch Bark Extract

PLoS ONE ◽  
2014 ◽  
Vol 9 (1) ◽  
pp. e86147 ◽  
Author(s):  
Sandra Ebeling ◽  
Katrin Naumann ◽  
Simone Pollok ◽  
Tina Wardecki ◽  
Sabine Vidal-y-Sy ◽  
...  
Keyword(s):  
Wound Healing ◽  
Medicinal Plant ◽  
Bark Extract ◽  
Birch Bark ◽  
Rational Drug

scholarly journals Development and Evaluation of a Reflective Solar Disinfection Pouch for Treatment of Drinking Water

2004 ◽  
Vol 70 (4) ◽  
pp. 2545-2550 ◽  
Author(s):  
D. Carey Walker ◽  
Soo-Voon Len ◽  
Brita Sheehan
Keyword(s):  
Antimicrobial Properties ◽  
Microbiological Quality ◽  
Water Source ◽  
Packaging Materials ◽  
Culturable Bacteria ◽  
Food Grade ◽  
Solar Disinfection ◽  
Log Reduction ◽  
Bacteriophage Ms2 ◽  
Time Period

ABSTRACT A second-generation solar disinfection (SODIS) system (pouch) was constructed from food-grade, commercially available packaging materials selected to fully transmit and amplify the antimicrobial properties of sunlight. Depending upon the season, water source, and challenge organism, culturable bacteria were reduced between 3.5 and 5.5 log cycles. The system was also capable of reducing the background presumptive coliform population in nonsterile river water below the level of detection. Similar experiments conducted with a model virus, the F-specific RNA bacteriophage MS2, indicated that the pouch was slightly less efficient, reducing viable plaques by 3.5 log units in comparison to a 5.0 log reduction of enterotoxigenic Escherichia coli O18:H11 within the same time period. These results suggest that water of poor microbiological quality can be improved by using a freely available resource (sunlight) and a specifically designed plastic pouch constructed of food-grade packaging materials.

The anaerobic degradability of thermoplastic starch: Polyvinyl alcohol blends: Potential biodegradable food packaging materials

2009 ◽  
Vol 100 (5) ◽  
pp. 1705-1710 ◽  
Author(s):  
Melissa A.L. Russo ◽  
Cathryn O’Sullivan ◽  
Beth Rounsefell ◽  
Peter J. Halley ◽  
Rowan Truss ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Food Packaging ◽  
Thermoplastic Starch ◽  
Packaging Materials ◽  
Food Packaging Materials ◽  
Anaerobic Degradability
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