Tags

Type your tag names separated by a space and hit enter

Inactivation of salmonella on tomato stem scars by edible chitosan and organic Acid coatings.
J Food Prot. 2012 Aug; 75(8):1368-72.JF

Abstract

This study was conducted to investigate the efficacy of antimicrobial coatings for inactivation of Salmonella on the surface of tomato stem scars. Scars were inoculated with a four-strain cocktail of Salmonella (serovars Montevideo, Newport, Saintpaul, and Typhimurium) and coated with acid-chitosan solutions. The chitosan coating with three acids (3A plus chitosan), the chitosan coating with one acid, and the three-acid solution without chitosan reduced the populations of Salmonella by 6.0, 3.6, and 5.3 log CFU per stem scar, respectively. Addition of allyl isothiocyanate (10 μl/ml) to the 3A plus chitosan coating did not significantly increase (P > 0.05) the antimicrobial efficacy. Although the populations of Salmonella in the controls (ca. 7.5 log CFU per stem scar) did not change significantly throughout the 14-day storage period at 10° C, Salmonella cells were reduced to undetectable levels (< 0.7 log CFU per stem scar) in the samples treated with 3A plus chitosan coating after two days of storage, and no growth was observed for the remaining storage period. Results from this study demonstrate that coatings of acid plus chitosan provide an alternative antimicrobial intervention for decontamination of tomatoes.

Links

Publisher Full Text (DOI)

Authors+Show Affiliations

Jin T
Residue Chemistry and Predictive Microbiology Research Unit, U.S. Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, 600 East Mermaid Lane, Wyndmoor, PA 19038, USA. tony.jin@ars.usda.gov
Gurtler JB
No affiliation info available

MeSH

Acetic AcidAnti-Bacterial AgentsChitosanColony Count, MicrobialConsumer Product SafetyDose-Response Relationship, DrugFood ContaminationFood PreservationHumansLactic AcidLevulinic AcidsSolanum lycopersicumPlant StemsSalmonellaSalmonella Food Poisoning

Pub Type(s)

Journal Article
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

22856559

Citation

Jin, T, and J B. Gurtler. "Inactivation of Salmonella On Tomato Stem Scars By Edible Chitosan and Organic Acid Coatings." Journal of Food Protection, vol. 75, no. 8, 2012, pp. 1368-72.
Jin T, Gurtler JB. Inactivation of salmonella on tomato stem scars by edible chitosan and organic Acid coatings. J Food Prot. 2012;75(8):1368-72.
Jin, T., & Gurtler, J. B. (2012). Inactivation of salmonella on tomato stem scars by edible chitosan and organic Acid coatings. Journal of Food Protection, 75(8), 1368-72. https://doi.org/10.4315/0362-028X.JFP-12-054
Jin T, Gurtler JB. Inactivation of Salmonella On Tomato Stem Scars By Edible Chitosan and Organic Acid Coatings. J Food Prot. 2012;75(8):1368-72. PubMed PMID: 22856559.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Inactivation of salmonella on tomato stem scars by edible chitosan and organic Acid coatings. AU - Jin,T, AU - Gurtler,J B, PY - 2012/8/4/entrez PY - 2012/8/4/pubmed PY - 2012/10/6/medline SP - 1368 EP - 72 JF - Journal of food protection JO - J Food Prot VL - 75 IS - 8 N2 - This study was conducted to investigate the efficacy of antimicrobial coatings for inactivation of Salmonella on the surface of tomato stem scars. Scars were inoculated with a four-strain cocktail of Salmonella (serovars Montevideo, Newport, Saintpaul, and Typhimurium) and coated with acid-chitosan solutions. The chitosan coating with three acids (3A plus chitosan), the chitosan coating with one acid, and the three-acid solution without chitosan reduced the populations of Salmonella by 6.0, 3.6, and 5.3 log CFU per stem scar, respectively. Addition of allyl isothiocyanate (10 μl/ml) to the 3A plus chitosan coating did not significantly increase (P > 0.05) the antimicrobial efficacy. Although the populations of Salmonella in the controls (ca. 7.5 log CFU per stem scar) did not change significantly throughout the 14-day storage period at 10° C, Salmonella cells were reduced to undetectable levels (< 0.7 log CFU per stem scar) in the samples treated with 3A plus chitosan coating after two days of storage, and no growth was observed for the remaining storage period. Results from this study demonstrate that coatings of acid plus chitosan provide an alternative antimicrobial intervention for decontamination of tomatoes. SN - 1944-9097 UR - https://www.unboundmedicine.com/medline/citation/22856559/Inactivation_of_salmonella_on_tomato_stem_scars_by_edible_chitosan_and_organic_Acid_coatings_ DB - PRIME DP - Unbound Medicine ER -