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The National Agricultural Library is one of four national libraries of the United States, with locations in Beltsville, Maryland and Washington, D.C. It houses one of the world's largest and most accessible agricultural information collections and serves as the nexus for a national network of state land-grant and U.S. Department of Agriculture field libraries. In fiscal year 2011 (Oct 2010 through Sept 2011) NAL delivered more than 100 million direct customer service transactions.

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Journal Article

Journal Article

Antimicrobial activity and physical properties of chitosan-tapioca starch based edible films and coatings  [2009]

Vasconez, Maria B.; Flores, Silvia K.; Campos, Carmen A.; Alvarado, Juan; et al.

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Antimicrobial activity of edible coating solutions based on chitosan and blends of chitosan-tapioca starch with or without potassium sorbate (KS) addition was studied. The agar well diffusion assay showed an antagonist effect on the efficiency of chitosan against Lactobacillus spp. when KS and/or tapioca starch were present. A salmon slice coating assay showed that the chitosan solution was the best coating since aerobic mesophilic and psychrophilic cell counts were reduced, pH and weight loss remained acceptable throughout refrigerated storage, extending global quality to 6-days. Chitosan-tapioca starch based films reduced Zygosaccharomyces bailii external spoilage in a semisolid product but were not effective against Lactobacillus spp. The results suggest that antibacterial action depended on the application technique, due to the fact that chitosan is more available in a coating solution than in a film matrix. Interactions between chitosan-starch and/or KS could affect film physical properties and the antimicrobial activity of chitosan. The addition of chitosan reduced water vapor permeability and solubility of starch films.
From the journal
Food research international
ISSN : 0963-9969

Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2013
Volume:
42 issue 7
Start Page:
762
End Page:
769
All titles:
"Antimicrobial activity and physical properties of chitosan-tapioca starch based edible films and coatings"@eng
Other:
"Includes references"
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Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2013
Volume:
42 issue 7
Start Page:
762
End Page:
769
All titles:
"Antimicrobial activity and physical properties of chitosan-tapioca starch based edible films and coatings"@eng
Other:
"Includes references"