scholarly journals Preparation and properties of bioactive packaging materials on the starch base

2012 ◽  
Vol 5 (2) ◽  
pp. 225-231
Author(s):  
Hana Smítková ◽  
Miroslav Marek ◽  
Jaroslav Dobiáš

Abstract In this study the surface adjustment by two polymers with addition of preservatives of chosen packaging material on starch base with incorporated additives has been investigated. Its bioactive function was verified by measuring zones of inhibition and mutual comparison of bacteriocin released from samples coated with polymers. The best results were achieved when chosen sample containing 15 % of sawdust, 5 % of PVOH and 2 % of calcium stearate was coated by 30 % of Kombilak L1917 solution or 10 % copolyamide 6/12 solution. The addition of antimicrobial agents slightly increased hydrophilicity of coated samples. Immobilization of preservative had no significant effect on the mechanical strength of coated samples. For both types of relevant polymers used amount of immobilized Nisaplin was quite sufficient for effective inhibition of microbial cultures Lactobacillus Helveticus CH1.

1982 ◽  
Vol 65 (5) ◽  
pp. 1155-1161
Author(s):  
Samuel Eskenazi ◽  
Olga E Bychkowski ◽  
Marilyn Smith ◽  
James D Macmillan

Abstract External surfaces of packaging materials used for sterile medical devices may introduce contaminants into working areas used for sterility testing. Light wiping with tissues moistened with alkaline 2% glutaraldehyde (Cidex) or 3% hydrogen peroxide effectively reduced counts on 5 X 8 cm strips of packaging material (Tyvek) inoculated with 107 spores of Bacillus subtilis. The ability of antimicrobial agents to penetrate packaging material and kill contaminants on the medical device was tested by inoculating filter membranes with ca 100 cells of Pseudomonas aeruginosa or Staphylococcus aureus or ca 100 spores of Bacillus subtilis. A sterile square of test packaging material placed over the inoculated membrane (direct method) or 0.5 cm above the membrane (indirect method) was wiped with the antimicrobial agent. Except for polyethylene film (3 mil), all materials tested, including glassine and several types of coated and uncoated Tyvek, were penetrated by the agents, killing cells on the inoculated membranes. Death rates varied, depending on the organism, packaging material, and testing method. It is suggested that penetration tests be performed before using antimicrobial agents for sanitizing packaging materials during sterility tests.


Polymers ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2588
Author(s):  
Mansuri M. Tosif ◽  
Agnieszka Najda ◽  
Aarti Bains ◽  
Grażyna Zawiślak ◽  
Grzegorz Maj ◽  
...  

In recent years, scientists have focused on research to replace petroleum-based components plastics, in an eco-friendly and cost-effective manner, with plant-derived biopolymers offering suitable mechanical properties. Moreover, due to high environmental pollution, global warming, and the foreseen shortage of oil supplies, the quest for the formulation of biobased, non-toxic, biocompatible, and biodegradable polymer films is still emerging. Several biopolymers from varied natural resources such as starch, cellulose, gums, agar, milk, cereal, and legume proteins have been used as eco-friendly packaging materials for the substitute of non-biodegradable petroleum-based plastic-based packaging materials. Among all biopolymers, starch is an edible carbohydrate complex, composed of a linear polymer, amylose, and amylopectin. They have usually been considered as a favorite choice of material for food packaging applications due to their excellent forming ability, low cost, and environmental compatibility. Although the film prepared from bio-polymer materials improves the shelf life of commodities by protecting them against interior and exterior factors, suitable barrier properties are impossible to attain with single polymeric packaging material. Therefore, the properties of edible films can be modified based on the hydrophobic–hydrophilic qualities of biomolecules. Certain chemical modifications of starch have been performed; however, the chemical residues may impart toxicity in the food commodity. Therefore, in such cases, several plant-derived polymeric combinations could be used as an effective binary blend of the polymer to improve the mechanical and barrier properties of packaging film. Recently, scientists have shown their great interest in underutilized plant-derived mucilage to synthesize biodegradable packaging material with desirable properties. Mucilage has a great potential to produce a stable polymeric network that confines starch granules that delay the release of amylose, improving the mechanical property of films. Therefore, the proposed review article is emphasized on the utilization of a blend of source and plant-derived mucilage for the synthesis of biodegradable packaging film. Herein, the synthesis process, characterization, mechanical properties, functional properties, and application of starch and mucilage-based film are discussed in detail.


TAPPI Journal ◽  
2020 ◽  
Vol 19 (11) ◽  
pp. 551-558
Author(s):  
ANTHONY V. LYONS ◽  
GREGG REED

The desire for more sustainable packaging has led to the development of new packaging materials that are fiber based. Aqueous coatings are a pathway to improve the recyclability of these materials. Pigments used in these coatings can improve the performance of the coating and reduce cost while further improving the recyclability. Mineral pigments are also considered to be compost neutral. In this paper, we provide the reader a better fundamental understanding of the mechanisms by which pigments work in barrier coatings. A pigment’s mineralogy and physical characteristics are important to how it will perform, and there have been recent pigment developments that improve coating performance. This paper shows that some pigments are better than others in particular barrier applications. Also, pigmented base or pre-coats can be used to prepare the surface for more highly functional coatings that go on top, improving the barrier function of packaging material and reducing overall cost. Finally, the converting operation is of major importance in driving formulation choices for barrier applications.


2021 ◽  
Vol 67 (3) ◽  
pp. 3575-3583
Author(s):  
Edina Lendvai

Packaging technology is one of today’s rapidly evolving disciplines, with innovative implications for many other disciplines, such as the food industry. Plastics can also be referred to as the materials of the 21st century, without which we could hardly imagine our lives today. Bioplastics are made from raw materials from renewable sources, while degradable plastics are mixtures of plastics made from conventional raw materials and additives that aid degradation. In my qualitative, online study, 513 people answered my questions about what the main function of packaging is, what characteristics a packaging material should possess, foods in which packaging are preferred, whether they had ever encountered environmentally friendly packaging materials. In addition to a lot of useful information, it turned out that Hungarian people are typically eco-conscious on paper, but in reality they do not pay enough attention to it. It is primarily college graduate women between the ages of 46 and 65 who also take environmental and ecological considerations into account when buying food.


2012 ◽  
Vol 15 (2) ◽  
pp. 165-169
Author(s):  
Shibtosh Sarker ◽  
Arindom Pal ◽  
Jesmin Sultana

The purpose of the present study was to investigate whether or not the pharmaceutical companies of Bangladesh are providing all the necessary information and instructions in the packaging materials of pharmaceutical products which are available in Bangladesh. With this aim, the sample of secondary packaging material (cartons, labels, inserts or direction slips) of a total 150 products (from 50 generics) marketed by 15 pharmaceutical companies have been selected and were collected from different medical stores of Dhaka city. The packaging materials of the collected samples were then evaluated based on various regulatory and clinical parameters. It was found that some of the packaging materials of these selected pharmaceutical products lack several  important information in terms of clinical and regulatory parameters which limits the quality of these packaging materials. DOI: http://dx.doi.org/10.3329/bpj.v15i2.12585 Bangladesh Pharmaceutical Journal 15(2): 165-169, 2012


2010 ◽  
Vol 123-125 ◽  
pp. 351-354 ◽  
Author(s):  
Fahmida Parvin ◽  
Md. Arifur Rahman ◽  
Jahid M.M. Islam ◽  
Mubarak A. Khan ◽  
A.H.M. Saadat

Polymer films of rice starch/Polyvinyl alcohol (PVA) were prepared by casting method. Different blends were made varying the concentration of rice starch and PVA. Tensile strength (TS) and elongation at break (Eb) of the prepared films were studied. Films made up of rice starch and PVA with a ratio of 2:8 showed highest TS. 10% sugar was added with highest TS giving four composition of Starch/PVA blend in order to increase TS and Eb. Films made up of rice starch and PVA and sugar with a ratio of 1:8:1 showed highest TS and Eb and the recorded value was 14.96MPa and 637% respectively. The physico-mechanical properties of the prepared sugar incorporated films were improved by grafting with acrylic monomer with the aid of UV radiation. A formulation was prepared with monomer, methylmethacrylat in methanol, and a photo initiator. The highest TS of the grafted films were recorded and the value was 16.38 MPa. The water uptake and weight loss in both soil and water of the grafted films are lower than the non-grafted films. The prepared films were further characterized with stereo micrograph and XRD. Finally, the produced film can be used as biodegradable packaging materials for shopping and garbage bags that are very popular and environment friendly.


2021 ◽  
pp. 87-90
Author(s):  
М.Б. РАХЫМБЕРЛИНОВ ◽  
Ф.Е. КАЮПОВА ◽  
А.А. ЕГИЗБАЕВА ◽  
А.О. ЖУРЫНОВА ◽  
М.Ж. СУТТИБАЕВА

Основной функцией любого фармацевтического упаковочного материала является защита рецептуры от воздействия окружающей среды для увеличения срока ее хранения и сохранения ее содержимого. Однако необходимо принимать во внимание защите окружающей среды от нежелательного воздействия фармацевтических упаковочных материалов. Поэтому разработка фармацевтической упаковки предполагает экологическую ответственность, устойчивость и определенные применимые правила охраны окружающей среды и переработки отходов. The main function of any pharmaceutical packaging material is to protect the formulation from environmental influences to increase its shelf life and preserve its contents. However, it is necessary to take into account the protection of the environment from the undesirable effects of pharmaceutical packaging materials. Therefore, the development of pharmaceutical packaging involves environmental responsibility, sustainability, and certain applicable regulations for environmental protection and waste management.


Author(s):  
D. CIOTEA ◽  
E. UNGUREANU ◽  
G. MUSTATEA ◽  
M. POPA

The use of packaging materials is important in the pharmaceutical industry. The pharmaceutical industry uses, as primary packaging materials, glass bottles, blister packs, caps and closures, glass vials, sealed tubes. The aim of this study is to perform global component migration analyses on these types of packaging, to see if there is a possibility of migration of components from the pharmaceutical package into the drug, so as not to alter in any way its therapeutic properties. The results obtained from the processing of the extracts obtained were below the maximum limits allowed for each category of packaging, respectively, plastic, paper and cardboard, glass.


2011 ◽  
Vol 117-119 ◽  
pp. 1137-1141
Author(s):  
Ling Yu Wang ◽  
Jun Yan Huang ◽  
Li Hua Cui

In order to study the characteristics of a new kind of high-barrier and high-temperature sterilization and easy tear flexible plastic packaging materials applied in food packaging, the PET/AL/CPP was chosen as flexible plastic packaging material structure, different PET, CPP, alcohol inks, adhesives and other raw materials were selected for making a series of processing technology experiment and detection analysis. Then comparing the data obtained with the requirements, it was concluded that new flexible plastic packaging materials were extremely high resistance oxygen and resistance wet, high-temperature sterilization and good one-way easy tear, and etc.


2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Ahmed M. Amer

The discovery of novel and more efficient antimicrobial agents from natural sources like plants is one of the most important ways through which the growing threat of antibiotic-resistant pathogens can be overcome. Herein, we report the potential antimicrobial activity ofCichorium endiviaL.subsp.pumilum. Different concentrations of various solvent extracts prepared from several parts of chicory were tested for their antimicrobial effect against a panel of microorganisms. The antimicrobial activity was analyzed using the well diffusion method, where zones of inhibition were used as indicators of antimicrobial activity. The results indicated the superiority of seed extracts over both leaf and root extracts. Methanol extracts showed higher activity compared with chloroform and water extracts. Increased solvent extract concentration was accompanied by a parallel increase in the diameter of the inhibition zone. Gram-positive bacteria were found to be more sensitive than Gram-negative bacteria and fungi. On a whole, the highest observed inhibition zones (21.3 ± 0.6 and 20.1 ± 0.4 mm) were recorded with the methanolic extract of chicory seeds againstS. aureusandB. cereus, respectively.These results offer insights into the antimicrobial potency of this Egyptian local plant and provide a basis for further phytochemical and pharmacological research.


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