Inhibition of Listeria monocytogenes in Fresh Cheese Using Chitosan-Grafted Lactic Acid Packaging.
Molecules
; 21(4): 469, 2016 Apr 08.
Article
in En
| MEDLINE
| ID: mdl-27070568
A chitosan from biologically obtained chitin was successfully grafted with d,l-lactic acid (LA) in aqueous media using p-toluenesulfonic acid as catalyst to obtain a non-toxic, biodegradable packaging material that was characterized using scanning electron microscopy, water vapor permeability, and relative humidity (RH) losses. Additionally, the grafting in chitosan with LA produced films with improved mechanical properties. This material successfully extended the shelf life of fresh cheese and inhibited the growth of Listeria monocytogenes during 14 days at 4 °C and 22% RH, whereby inoculated samples with chitosan-g-LA packaging presented full bacterial inhibition. The results were compared to control samples and commercial low-density polyethylene packaging.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Cheese
/
Food Packaging
/
Chitosan
/
Listeria monocytogenes
Limits:
Humans
Language:
En
Journal:
Molecules
Journal subject:
BIOLOGIA
Year:
2016
Document type:
Article
Affiliation country:
Mexico
Country of publication:
Switzerland