Enhancing antimicrobial activity of chitosan films by incorporating garlic oil, potassium sorbate and nisin

LWT ◽  
2005 ◽  
Vol 38 (8) ◽  
pp. 859-865 ◽  
Author(s):  
Y. Pranoto ◽  
S.K. Rakshit ◽  
V.M. Salokhe
Keyword(s):  
Antimicrobial Activity ◽  
Potassium Sorbate ◽  
Garlic Oil ◽  
Chitosan Films

scholarly journals Antimicrobial Activity of Lignin and Lignin-Derived Cellulose and Chitosan Composites Against Selected Pathogenic and Spoilage Microorganisms

Polymers ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 670 ◽  
Author(s):  
Alzagameem ◽  
Klein ◽  
Bergs ◽  
Do ◽  
Korte ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Low Temperatures ◽  
Food Packaging ◽  
Antimicrobial Activities ◽  
Gram Negative Bacteria ◽  
Scavenging Activity ◽  
Gram Positive ◽  
Gram Negative ◽  
Spoilage Bacteria ◽  
Chitosan Films

The antiradical and antimicrobial activity of lignin and lignin-based films are both of great interest for applications such as food packaging additives. The polyphenolic structure of lignin in addition to the presence of O-containing functional groups is potentially responsible for these activities. This study used DPPH assays to discuss the antiradical activity of HPMC/lignin and HPMC/lignin/chitosan films. The scavenging activity (SA) of both binary (HPMC/lignin) and ternary (HPMC/lignin/chitosan) systems was affected by the percentage of the added lignin: the 5% addition showed the highest activity and the 30% addition had the lowest. Both scavenging activity and antimicrobial activity are dependent on the biomass source showing the following trend: organosolv of softwood > kraft of softwood > organosolv of grass. Testing the antimicrobial activities of lignins and lignin-containing films showed high antimicrobial activities against Gram-positive and Gram-negative bacteria at 35 °C and at low temperatures (0–7 °C). Purification of kraft lignin has a negative effect on the antimicrobial activity while storage has positive effect. The lignin release in the produced films affected the activity positively and the chitosan addition enhances the activity even more for both Gram-positive and Gram-negative bacteria. Testing the films against spoilage bacteria that grow at low temperatures revealed the activity of the 30% addition on HPMC/L1 film against both B. thermosphacta and P. fluorescens while L5 was active only against B. thermosphacta. In HPMC/lignin/chitosan films, the 5% addition exhibited activity against both B. thermosphacta and P. fluorescens.

Evaluation of the Antimicrobial Potential of Alginate and Alginate/Chitosan Films Containing Potassium Sorbate and Natamycin

2012 ◽  
Vol 26 (8) ◽  
pp. 479-492 ◽  
Author(s):  
Mariana Altenhofen da Silva ◽  
Beatriz Thie Iamanaka ◽  
Marta Hiromi Taniwaki ◽  
Theo Guenter Kieckbusch
Keyword(s):  
Potassium Sorbate ◽  
Antimicrobial Potential ◽  
Chitosan Films

Chitosan based antimicrobial films for food packaging applications

e-Polymers ◽  
2008 ◽  
Vol 8 (1) ◽  
Author(s):  
Shipra Tripathi ◽  
G. K. Mehrotra ◽  
P. K. Dutta
Keyword(s):  
Antimicrobial Activity ◽  
Food Packaging ◽  
Antimicrobial Properties ◽  
Food Preservation ◽  
Pathogenic Microorganisms ◽  
Packaging System ◽  
Antimicrobial Packaging ◽  
Wide Range ◽  
Chitosan Films ◽  
Antimicrobial Films

AbstractAntimicrobial packaging is one of the most promising active packaging systems. Antimicrobial packaging is the packaging system that is able to kill or inhibit spoilage and pathogenic microorganisms that are contaminating foods. A tremendous effort has been made over the last decade to develop and test films with antimicrobial properties to improve food safety and shelf life. For food preservation, chitosan films are very effective. Chitosan has widely been used in antimicrobial films, to provide edible protective coating, dipping and spraying for the food products due to its antimicrobial properties. Chitosan can be formed into fibers, films, gels, sponges, beads or nanoparticles. Chitosan films have been used as a packaging material for the quality preservation of a variety of food. Chitosan has great potential for a wide range of applications due to its biodegradability, biocompatibility, antimicrobial activity, non-toxicity and versatile chemical and physical properties. The present review outlines the preparation and antimicrobial activity of chitosan based films.

Research on Antimicrobial Activity of Functional Protein Films

2013 ◽  
Vol 785-786 ◽  
pp. 660-665 ◽  
Author(s):  
Zhi Ying Huang ◽  
Qiao Lei ◽  
Jian Qiang Bao ◽  
Qian Nan Xun
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Activity ◽  
Pathogenic Bacteria ◽  
Antimicrobial Agents ◽  
Antimicrobial Effect ◽  
Potassium Sorbate ◽  
Protein Films ◽  
Functional Protein ◽  
Elongation At Break ◽  
Mechanical And Physical Properties

Antimicrobial effect of functional protein films incorporating garlic oil (GO), potassium sorbate (PS) and nisin (N) at various concentrations were discussed. This activity was tested against food pathogenic bacteria namely Escherichia coli (E.coli) and Staphylococcus aureus (S.aureus).Mechanical and physical properties were characterized. In the range of antimicrobial agents concentration studied, tensile strength (TS) and elongation at break (E) of functional protein films were changed by incorporating GO,PS and N. And the WVP value of functional protein films decreased as antimicrobial agents added. GO incorporated into protein films had no effect on E.coli, but incorporation of GO at 300μl had antimicrobial activity against S.aureus. Protein films incorporated with PS showed antimicrobial activity against S.aureus, but there was no effect on E.coli. Incorporation of N at the lowest level of 25,000 IU had antimicrobial activity against both E.coli and S.aureus.

scholarly journals ANTIOXIDANT AND ANTIMICROBIAL ACTIVITY OF BIOACTIVE CHITOSAN FILMS

2022 ◽  
Vol 52 (1) ◽  
pp. 61-65
Author(s):  
Maria Belen Vignola ◽  
Matias Alejandro Raspo ◽  
Cesar Gerardo Gómez ◽  
Alfonsina Ester Andreatta
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Activity ◽  
Salicylic Acid ◽  
Gallic Acid ◽  
Tween 80 ◽  
Food Preservation ◽  
The Other ◽  
Food Packages ◽  
Chitosan Films ◽  
Antioxidant And Antimicrobial Activity

Interest in the development of films for food preservation is increasing due to the improvement achieved in the food preservation time with the advent of new packaging technologies. Chitosan is a widely used biopolymer produced from the deacetylation of chitin, which has a good capacity to form suitable films as food packages. On the other hand, bioactive compounds such as gallic acid and salicylic acid act as inhibitors of the oxidant activity of free radicals and delay the decomposition of food. In this sense, the preparation of chitosan films modified with the mixture incorporation of salicylic acid/sorbitol or gallic acid/Tween 80 was proposed, using sorbitol or Tween 80 as plasticizers. Both films (chitosan/gallic acid/Tween 80 and chitosan/salicylic acid/sorbitol) showed a good antioxidant capacity in while the chitosan/gallic acid/Tween 80 film evidenced its antimicrobial activity against Escherichia coli ATCC 25922 causing a diminution of unit forming colony

scholarly journals Modeling of potassium sorbate diffusion through chitosan films

LWT ◽  
2010 ◽  
Vol 43 (4) ◽  
pp. 584-589 ◽  
Author(s):  
Cristiana M.P. Yoshida ◽  
Carlos Eduardo N. Bastos ◽  
Telma T. Franco
Keyword(s):  
Potassium Sorbate ◽  
Chitosan Films
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