Phytochemicals of ethanolic extract and essential oil of Persicaria hydropiper and their potential as antibacterial agents for food packaging polylactic acid film

2020 ◽  
Author(s):  
Nurain Aziman ◽  
Noriham Abdullah ◽  
Aishah Bujang ◽  
Zainon Mohd Noor ◽  
Aziyah Abdul Aziz ◽  
...  
Keyword(s):  
Essential Oil ◽  
Polylactic Acid ◽  
Food Packaging ◽  
Antibacterial Agents ◽  
Ethanolic Extract

scholarly journals Polylactic acid (PLA): Improve it, use it, and dump it faster

BioResources ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. 2196-2199
Author(s):  
Narongrit Sombatsompop ◽  
Panupong Srimalanon ◽  
Teerasak Markpin ◽  
Benjaphorn Prapagdee
Keyword(s):  
Waste Management ◽  
Environmental Pollution ◽  
Polylactic Acid ◽  
Renewable Resources ◽  
Food Packaging ◽  
Antibacterial Agents ◽  
It Use ◽  
The World ◽  
Single Use ◽  
Alternative Approaches

Today, many people enjoy an easy lifestyle. However, this comfort has come with a price because of plastic that is thrown away after a single use. As such, governments around the world have pushed for biodegradable plastics to be produced, especially for food packaging, and these can be easily seen in supermarkets, for example. Using plastic for only one time has resulted in environmental pollution. To solve this problem, polylactic acid (PLA) has been introduced as an alternative bio-based plastic to replace artificial petroleum-based plastics. PLA comes from renewable resources and is biodegradable under certain conditions. Furthermore, the development of the properties of PLA could solve problems related to its weakness in packaging applications. This editorial proposes expansion of the property attributes of PLA to include hygienic character, through the addition of antibacterial agents. This can be done by introducing two alternative approaches for waste management: PLA recycling and degradation. However, some key research is still needed to improve the properties and waste management of PLA relative to the effectiveness of its reprocessing and acceleration of its (bio)degradation.

scholarly journals Biodegradation of Polylactic Acid-Based Bio Composites Reinforced with Chitosan and Essential Oils as Anti-Microbial Material for Food Packaging

Polymers ◽  
2021 ◽  
Vol 13 (22) ◽  
pp. 4019
Author(s):  
Teuku Rihayat ◽  
Agung Efriyo Hadi ◽  
Nurhanifa Aidy ◽  
Aida Safitri ◽  
Januar Parlaungan Siregar ◽  
...  
Keyword(s):  
Essential Oil ◽  
Polylactic Acid ◽  
Functional Groups ◽  
Food Packaging ◽  
Antibacterial Properties ◽  
Wide Band ◽  
Solid Particles ◽  
Raw Material ◽  
Hydroxyl Group ◽  
Maximum Temperature

This study aims to produce and investigate the potential of biodegradable Polylactic Acid (PLA)-based composites mixed with chitosan and Turmeric Essential Oil (TEO) as an anti-microbial biomaterial. PLA has good barrier properties for moisture, so it is suitable for use as a raw material for making packaging and is included in the GRAS (Generally Recognized As Safe). Chitosan is a non-toxic and antibacterial cationic polysaccharide that needs to be improved in its ability to fight microbes. TEO must be added to increase antibacterial properties due to a large number of hydroxyl (-OH) and carbonyl functional groups. The samples were prepared in three different variations: 2 g of chitosan, 0 mL TEO and 0 mL glycerol (Biofilm 1), 3 g of chitosan, 0.3 mL TEO and 0.5 mL of glycerol (Biofilm 2), and 4 g of chitosan, 0.3 of TEO and 0.5 mL of glycerol (Biofilm 3). The final product was characterized by its functional group through Fourier transform infrared (FTIR); the functional groups contained by the addition of TEO are C-H, C=O, O-H, and N-H with the extraction method, and as indicated by the emergence of a wide band at 3503 cm−1, turmeric essential oil interacts with the polymer matrix by creating intermolecular hydrogen bonds between their terminal hydroxyl group and the carbonyl groups of the ester moieties of both PLA and Chitosan. Thermogravimetric analysis (TGA) of PLA as biofilms, the maximum temperature of a biofilm was observed at 315.74 °C in the variation of 4 g chitosan, 0.3 mL TEO, and 0.5 mL glycerol (Biofilm 3). Morphological conditions analyzed under scanning electron microscopy (SEM) showed that the addition of TEO inside the chitosan interlayer bound chitosan molecules to produce solid particles. Chitosan and TEO showed increased anti-bacterial activity in the anti-microbial test. Furthermore, after 12 days of exposure to open areas, the biofilms generated were able to resist S. aureus and E. coli bacteria.

Impregnation of Cinnamon Essential Oil into Plasticised Polylactic Acid Biocomposite Film for Active Food Packaging

2017 ◽  
Vol 1 (3) ◽  
pp. 149-156 ◽  
Author(s):  
H. Anuar ◽  
A. B. Nur Fatin Izzati ◽  
S. M. Sharifah Nurul Inani ◽  
M. A. Siti Nur E’zzati ◽  
A. B. Siti Munirah Salimah ◽  
...  
Keyword(s):  
Essential Oil ◽  
Polylactic Acid ◽  
Food Packaging ◽  
Active Food Packaging ◽  
Cinnamon Essential Oil ◽  
Biocomposite Film

scholarly journals Effect of Na- and Organo-Modified Montmorillonite/Essential Oil Nanohybrids on the Kinetics of the In Situ Radical Polymerization of Styrene

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 474
Author(s):  
Ioannis S. Tsagkalias ◽  
Alexandra Loukidi ◽  
Stella Chatzimichailidou ◽  
Constantinos E. Salmas ◽  
Aris E. Giannakas ◽  
...  
Keyword(s):  
Essential Oil ◽  
Radical Polymerization ◽  
Food Packaging ◽  
In Situ Polymerization ◽  
Average Molecular Weight ◽  
Monomer Conversion ◽  
Hydroxyl Groups ◽  
Modified Montmorillonite ◽  
Kinetics Of

The great concern about the use of hazardous additives in food packaging materials has shown the way to new bio-based materials, such as nanoclays incorporating bioactive essential oils (EO). One of the still unresolved issues is the proper incorporation of these materials into a polymeric matrix. The in situ polymerization seems to be a promising technique, not requiring high temperatures or toxic solvents. Therefore, in this study, the bulk radical polymerization of styrene was investigated in the presence of sodium montmorillonite (NaMMT) and organo-modified montmorillonite (orgMMT) including thyme (TO), oregano (OO), and basil (BO) essential oil. It was found that the hydroxyl groups present in the main ingredients of TO and OO may participate in side retardation reactions leading to lower polymerization rates (measured gravimetrically by the variation of monomer conversion with time) accompanied by higher polymer average molecular weight (measured via GPC). The use of BO did not seem to affect significantly the polymerization kinetics and polymer MWD. These results were verified from independent experiments using model compounds, thymol, carvacrol and estragol instead of the clays. Partially intercalated structures were revealed from XRD scans. The glass transition temperature (from DSC) and the thermal stability (from TGA) of the nanocomposites formed were slightly increased from 95 to 98 °C and from 435 to 445 °C, respectively. Finally, better dispersion was observed when orgMMT was added instead of NaMMT.

scholarly journals Basil Essential Oil: Composition, Antimicrobial Properties, and Microencapsulation to Produce Active Chitosan Films for Food Packaging

Foods ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 121
Author(s):  
Ghita Amor ◽  
Mohammed Sabbah ◽  
Lucia Caputo ◽  
Mohamed Idbella ◽  
Vincenzo De Feo ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Shelf Life ◽  
Food Packaging ◽  
Antimicrobial Properties ◽  
Edible Films ◽  
Biological Properties ◽  
Oil Composition ◽  
Packaging System ◽  
Cooked Ham

The essential oil (EO) from basil—Ocimum basilicum—was characterized, microencapsulated by vibration technology, and used to prepare a new type of packaging system designed to extend the food shelf life. The basil essential oil (BEO) chemical composition and antimicrobial activity were analyzed, as well as the morphological and biological properties of the derived BEO microcapsules (BEOMC). Analysis of BEO by gas chromatography demonstrated that the main component was linalool, whereas the study of its antimicrobial activity showed a significant inhibitory effect against all the microorganisms tested, mostly Gram-positive bacteria. Moreover, the prepared BEOMC showed a spheroidal shape and retained the EO antimicrobial activity. Finally, chitosan-based edible films were produced, grafted with BEOMC, and characterized for their physicochemical and biological properties. Since their effective antimicrobial activity was demonstrated, these films were tested as packaging system by wrapping cooked ham samples during 10 days of storage, with the aim of their possible use to extend the shelf life of the product. It was demonstrated that the obtained active film can both control the bacterial growth of the cooked ham and markedly inhibit the pH increase of the packaged food.

Development of antimicrobial films based on poly(lactic acid) incorporated with Thymus vulgaris essential oil and ethanolic extract of Mediterranean propolis

2021 ◽  
Author(s):  
Nadjat Ardjoum ◽  
Nacera Chibani ◽  
Shiv Shankar ◽  
Yosra Ben Fadhel ◽  
Hocine Djidjelli ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Essential Oil ◽  
Ethanolic Extract ◽  
Poly Lactic Acid ◽  
Thymus Vulgaris ◽  
Antimicrobial Films
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