Morphological, Structural, Thermal, Permeability, and Antimicrobial Activity of PBS and PBS/TPS Films Incorporated with Biomaster-Silver for Food Packaging Application

The development of antimicrobial film for food packaging application had become the focus for researchers and scientists. This research aims to study the characteristics and antimicrobial activity of novel biofilms made of poly (butylene succinate) (PBS) and tapioca starch (TPS) added with 1.5% or 3% of Biomaster-silver (BM) particle. In morphological examination, the incorporation of 3% BM particle was considerably good in forming well-structured PBS film. Meanwhile, the functional groups analysis revealed the 3% BM particle was effectively interacted with PBS molecular chains. The flame retard behavior of BM metal particle also helped in enhancing the thermal stability for pure PBS and PBS/TPS films. The nucleating effect of BM particles had improved the films crystallinity. Small pore size features with high barrier property for gas permeability was obtained for BM filled PBS/TPS films. From antimicrobial analysis, the BM particles possessed antimicrobial activity against three bacteria Staphylococcus aureus, Escherichia coli, and Salmonella Typhimurium in which PBS/TPS 3% BM film exhibited strong antimicrobial activity against all tested bacteria, however, PBS/TPS 1.5% BM film exhibited strong antimicrobial activity against E. coli only. Hence, the incorporation of BM into PBS/TPS film could be a sustainable way for developing packaging films to preserve food products.

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Synergistic Antimicrobial Activities of Combinations of Vanillin and Essential Oils of Cinnamon Bark, Cinnamon Leaves and Cloves

Foods ◽

10.3390/foods10061406 ◽

2021 ◽

Vol 10 (6) ◽

pp. 1406

Author(s):

Rita Cava-Roda ◽

Amaury Taboada-Rodríguez ◽

Antonio López-Gómez ◽

Ginés Benito Martínez-Hernández ◽

Fulgencio Marín-Iniesta

Keyword(s):

Antimicrobial Activity ◽

Essential Oils ◽

Food Packaging ◽

Antimicrobial Effect ◽

Antimicrobial Activities ◽

Inhibitory Effects ◽

Cinnamon Bark ◽

E Coli ◽

Pure Compounds ◽

Main Component

Plant bioactive compounds have antimicrobial and antioxidant activities that allow them to be used as a substitute for synthetic chemical additives in both food and food packaging. To improve its sensory and bactericidal effects, its use in the form of effective combinations has emerged as an interesting possibility in the food industry. In this study, the antimicrobial activities of essential oils (EOs) of cinnamon bark, cinnamon leaves, and clove and the pure compounds vanillin, eugenol, and cinnamaldehyde were investigated individually and in combination against Listeria monocytogenes and Escherichia coli O157:H7. The possible interactions of combinations of pure compounds and EOs were performed by the two-dimensional checkerboard assay and isobologram methods. Vanillin exhibited the lowest antimicrobial activity (MIC of 3002 ppm against L. monocytogenes and 2795 ppm against E. coli O157:H7), while clove and cinnamon bark EOs exhibited the highest antimicrobial activity (402–404 against L. monocytogenes and 778–721 against E. coli O157:H7). For L. monocytogenes, pure compound eugenol, the main component of cinnamon leaves and clove, showed lower antimicrobial activity than EOs, which was attributed to the influence of the minor components of the EOs. The same was observed with cinnamaldehyde, the main component of cinnamon bark EO. The combinations of vanillin/clove EO and vanillin/cinnamon bark EO showed the most synergistic antimicrobial effect. The combination of the EOs of cinnamon bark/clove and cinnamon bark/cinnamon leaves showed additive effect against L. monocytogenes but indifferent effect against E. coli O157:H7. For L. monocytogenes, the best inhibitory effects were achieved by cinnamon bark EO (85 ppm)/vanillin (910 ppm) and clove EO (121 ppm)/vanillin (691 ppm) combinations. For E. coli, the inhibitory effects of clove EO (104 ppm)/vanillin (1006 ppm) and cinnamon leaves EO (118 ppm)/vanillin (979 ppm) combinations were noteworthy. Some of the tested combinations increased the antimicrobial effect and would allow the effective doses to be reduced, thereby offering possible new applications for food and active food packaging.

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Combined Effect of Hop Resins and Sodium Hexametaphosphate against Certain Strains of Escherichia coli

Journal of Food Protection ◽

10.4315/0362-028x-63.6.735 ◽

2000 ◽

Vol 63 (6) ◽

pp. 735-740 ◽

Cited By ~ 7

Author(s):

TADASHI FUKAO ◽

HARUMICHI SAWADA ◽

YOSHIYUKI OHTA

Keyword(s):

Escherichia Coli ◽

Antimicrobial Activity ◽

Food Systems ◽

Combined Effect ◽

Sodium Hexametaphosphate ◽

Lag Phase ◽

Phase Growth ◽

E Coli ◽

Cell Components ◽

Strong Antimicrobial Activity

The combined antimicrobial effects of hop resins with sodium hexametaphosphate, glycerol monocaprate, and lysozyme were investigated aiming to make an effective agent against Escherichia coli. When they are used separately, the antimicrobial activity against E. coli was minimal. However, the combination of hop resins with sodium hexametaphosphate exhibited strong antimicrobial activity against E. coli, but no effect was found in combinations of hop resins with the other agents. The activity was strongest when the combination was added at the beginning of growth of the bacteria, resulting in a prolonged lag phase. However, when the antimicrobials were added during the log phase, growth was depressed considerably. By addition of these materials, cell components with absorbance near 260 nm were leaked out. This possibly may have resulted from damage to the cell membranes of the bacteria. The combined effect was also detected in model food systems such as mashed potatos. The use of hop resins and sodium hexametaphosphate in combination may thus be useful for controlling E. coli.

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Antimicrobial Activity and HPLC Fingerprinting of CrudeOcimumExtracts

E-Journal of Chemistry ◽

10.1155/2011/428019 ◽

2011 ◽

Vol 8 (3) ◽

pp. 1430-1437 ◽

Cited By ~ 3

Author(s):

S. S. Deo ◽

F. Inam ◽

R. P. Mahashabde

Keyword(s):

Antimicrobial Activity ◽

Methanolic Extract ◽

Ocimum Sanctum ◽

Moderate Activity ◽

Aqueous Extracts ◽

Gram Positive ◽

Strong Activity ◽

Gram Negative ◽

E Coli ◽

Strong Antimicrobial Activity

The antimicrobial activity of crude methanolic and aqueous extracts ofOcimum sanctumandOcimum kilimandsacharicumagainst gram positive, gram negative and antifungal activity was evaluated to find the zone of inhibition and to set a HPLC profile or fingerprint of these extracts. The crude methanolic extract ofOcimum sanctumshowed strong antimicrobial activity againstS.aureusandC. albicansand moderate activity againstE. coliandB. subtilis. The crude methanolic extract ofOcimum kilimandsacharicumshowed strong antimicrobial activity againstS. aureus, E. coliandC. albicansat higher concentration, same as that shown by the standard forC. albicans. It showed moderate activity againstB. subtilis. The crude aqueous extracts of Ocimum sanctum showed strong antimicrobial activity againstS.aureusand moderate against others. Whereas the crude aqueous extracts ofOcimum kilimandsacharicumshowed moderate activity against the gram positive and gram negative organisms and strong activity againstC. albicansat higher concentration, same as that shown by the standard forC. albicans.

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Chemical Composition and Antimicrobial Activity of the Essential Oil From Euphorbia helioscopia L.

Natural Product Communications ◽

10.1177/1934578x20953249 ◽

2020 ◽

Vol 15 (9) ◽

pp. 1934578X2095324

Author(s):

Qing Zhu ◽

Mei-Lin Jiang ◽

Feng Shao ◽

Guang-Qiang Ma ◽

Qiang Shi ◽

...

Keyword(s):

Antimicrobial Activity ◽

Chemical Composition ◽

Essential Oil ◽

Shigella Dysenteriae ◽

Gas Chromatography Mass Spectrometry ◽

E Coli ◽

Aerial Parts ◽

Euphorbia Helioscopia ◽

Total Oil ◽

Strong Antimicrobial Activity

The chemical composition and antimicrobial activity of the essential oil from the aerial parts of Euphorbia helioscopia L. were investigated by gas chromatography-mass spectrometry (GC-MS), GC, and microdilution methods. Thirty-five compounds, representing 83.51% of the total oil, were identified. 1,6-Dihydrocarveol (31.39%), carvone (16.79%), menthol (8.23%), and trans-dihydrocarvone (5.53%) were the principal constituents of the oil. The essential oil exhibited strong antimicrobial activity against strains of the bacteria, Staphylococcus aureus, Enterococcus faecalis, Escherichia coli, Shigella dysenteriae, and a strain of the fungus Candida albicans with a minimal inhibitory concentration value of 31.25 μg/mL and minimum bactericidal concentration values of 31.25 μg/mL ( S. aureus), 62.50 μg/mL ( E. faecalis), >62.50 μg/mL ( E. coli), >62.50 μg/mL ( S. dysenteriae), and >62.50 μg/mL ( C. albicans). These results indicated that the essential oil from the aerial parts of E. helioscopia could be used to control diseases caused by these microbes.

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Preparation and Characterization of Potato Starch Film with Various Size of Nano-SiO2

Polymers ◽

10.3390/polym10101172 ◽

2018 ◽

Vol 10 (10) ◽

pp. 1172 ◽

Cited By ~ 16

Author(s):

Rongfei Zhang ◽

Xiangyou Wang ◽

Meng Cheng

Keyword(s):

Mechanical Properties ◽

Food Packaging ◽

Water Resistance ◽

Gas Permeability ◽

Potato Starch ◽

Antibacterial Properties ◽

E Coli ◽

Nano Sio2 ◽

Starch Films

The various sizes (15, 30, 80, and 100 nm) of nano-SiO2/potato starch films were synthesized and characterized. The gas permeability, antibacterial properties, and mechanical properties of the films were evaluated to their potential for application as food packaging materials. Results indicated that the 100 nm nano-SiO2 was well dispersed in the starch matrix, which induced an active group on the surface of 100 nm nano-SiO2 adequately combined with starch macromolecule. The water resistance and mechanical properties of the films were improved with the addition of nano-SiO2. Notably, resistance to ultraviolet and thermal aging was also enhanced. The nano-SiO2/potato starch films were more efficient against Escherichia coli (E. coli) than Staphylococcus aureus (S. aureus). Remarkable preservation properties of the films packaging the white mushrooms were obtained, with those of the 100 nm films considered superior. This study can significantly guide the rational choice of the nano-SiO2 size to meet the packaging requirements of various agricultural products.

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Antimicrobial activity of essential oils on food pathogens

The Journal of Agriculture and Development ◽

10.52997/jad.8.04.2020 ◽

2020 ◽

Vol 19 (04) ◽

pp. 64-72

Author(s):

Ngoc T. A. Tong

Keyword(s):

Antimicrobial Activity ◽

Essential Oils ◽

Food Processing ◽

Food Storage ◽

Resistant Bacteria ◽

Natural Antimicrobial ◽

E Coli ◽

Gram Positive Bacteria ◽

Strong Antimicrobial Activity ◽

Potential Use

The study aimed to screen the antibacterial activity of seven types of essential oils against 5 bacteria and 4 strains of E. coli using disk diffusion and MIC method. The essential oils were more effective against Gram-positive bacteria as compared to Gram-negative species. Thyme and cinnamon essential oils showed strong antimicrobial activity against all microorganisms tested. Especially, the tested essential oils inhibited the growth of multi-antibiotics resistant bacteria isolated from food processing chains, indicating the possibility of their potential use in reality. The MIC values of cinnamon and thyme essential oils against E. coli ATCC 25922, S. typhimurium, S. aureus, L. monocytogenes and P. aeruginosa were 512-1024 µg/mL and 1024-4096 µg/mL, respectively. The present study provided useful information and showed the potential use of cinnamon and thyme essential oils in food storage as natural antimicrobial preservatives.

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Antimicrobial, Antibiofilm, and Antioxidant Activity of Functional Poly(Butylene Succinate) Films Modified with Curcumin and Carvacrol

Materials ◽

10.3390/ma14247882 ◽

2021 ◽

Vol 14 (24) ◽

pp. 7882

Author(s):

Łukasz Łopusiewicz ◽

Szymon Macieja ◽

Artur Bartkowiak ◽

Mirosława El Fray

Keyword(s):

Bioactive Compounds ◽

Food Packaging ◽

Antibiofilm Activity ◽

Biodegradable Films ◽

Butylene Succinate ◽

E Coli ◽

Industry Waste ◽

Potential Applications ◽

Bifunctional Properties

The use of food industry waste as bioactive compounds in the modification of biodegradable films as food packaging remains a major challenge. This study describes the preparation and bioactivity characterization of poly(butylene succinate) (PBS)-based films with the addition of the bioactive compounds curcumin (CUR) and carvacrol (CAR). Films based on PBS modified with curcumin and carvacrol at different concentration variations (0%/0.1%/1%) were prepared by solvent casting method. The antioxidant, antimicrobial, and antibiofilm properties were investigated against bacteria (Escherichia coli, Staphylococcus aureus) and fungi (Candida albicans). As a result of the modification, the films exhibited free radicals scavenging (DPPH up to 91.47% and ABTS up to 99.21%), as well as antimicrobial (6 log, 4 log, and 2 log reductions for E. coli, S. aureus, and C. albicans, respectively, for samples modified with 1% CUR and 1% CAR) activity. Moreover, antibiofilm activity of modified materials was observed (8.22–87.91% reduction of biofilm, depending on bioactive compounds concentration). PBS films modified with curcumin and carvacrol with observed bifunctional properties have many potential applications as active packaging.

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Antimicrobial Activity of TiO2Nanoparticle-Coated Film for Potential Food Packaging Applications

International Journal of Photoenergy ◽

10.1155/2014/945930 ◽

2014 ◽

Vol 2014 ◽

pp. 1-6 ◽

Cited By ~ 47

Author(s):

Siti Hajar Othman ◽

Nurul Raudhah Abd Salam ◽

Norhazlizam Zainal ◽

Roseliza Kadir Basha ◽

Rosnita A. Talib

Keyword(s):

Antimicrobial Activity ◽

Food Packaging ◽

Uv Light ◽

Light Exposure ◽

Antimicrobial Property ◽

Fluorescent Light ◽

Packaging Film ◽

E Coli ◽

Coated Film ◽

Potential Food

Recent uses of titanium dioxide (TiO2) have involved various applications which include the food industry. This study aims to develop TiO2nanoparticle-coated film for potential food packaging applications due to the photocatalytic antimicrobial property of TiO2. The TiO2nanoparticles with varying concentrations (0–0.11 g/ 100 mL organic solvent) were coated on food packaging film, particularly low density polyethylene (LDPE) film. The antimicrobial activity of the films was investigated by their capability to inactivateEscherichia coli(E. coli) in an actual food packaging application test under various conditions, including types of light (fluorescent and ultraviolet (UV)) and the length of time the film was exposed to light (one–three days). The antimicrobial activity of the TiO2nanoparticle-coated films exposed under both types of lighting was found to increase with an increase in the TiO2nanoparticle concentration and the light exposure time. It was also found that the antimicrobial activity of the films exposed under UV light was higher than that under fluorescent light. The developed film has the potential to be used as a food packaging film that can extend the shelf life, maintain the quality, and assure the safety of food.

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