Salmonella, Listeria monocytogenes, and Indicator Microorganisms on Hass Avocados Sold at Retail Markets in Guadalajara, Mexico
Hass avocados may become contaminated with and at the farm and the packing facility or later during transportation and at retail. In Mexico, avocados are frequently sold in bulk at retail markets, where they are stored at room temperature for several hours or days and exposed to potential sources of...
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| Veröffentlicht in: | Journal of food protection 2020-01, Vol.83 (1), p.75-81 |
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| creator | García-Frutos, Ramón Martínez-Chávez, Liliana Cabrera-Díaz, Elisa Gutiérrez-González, Porfirio Montañez-Soto, José Luis Varela-Hernández, Juan José Martínez-Gonzáles, Nanci Edid |
| description | Hass avocados may become contaminated with
and
at the farm and the packing facility or later during transportation and at retail. In Mexico, avocados are frequently sold in bulk at retail markets, where they are stored at room temperature for several hours or days and exposed to potential sources of microorganisms. These conditions may favor the entry, adhesion, survival, and biofilm formation of
and
. The aim of this study was to determine the occurrence of
and other
species and the levels of indicator microorganisms on the surface of avocados sold at retail markets. A total of 450 samples (
var. Hass) were acquired from retail markets located in Guadalajara, Mexico. One group of 225 samples was evaluated for the presence of
and for enumeration of aerobic plate counts, yeasts and molds,
coliforms, and
. The other 225 samples were processed for isolation of
and other
species. Microbial counts (log CFU per avocado) were 4.3 to 9.0 for aerobic plate counts, 3.3 to 7.1 for yeasts and molds, 3.3 to 8.2 for
3.3 to 8.4 for coliforms, and 3.3 to 6.2 for
. Eight samples (3.5%) were positive for
spp. and
were detected in 31 (13.8%) and 18 (8.0%) of 225 samples, respectively.
and
were isolated from 7.6, 1.3, and 0.9% of samples. These results indicate that avocados may carry countable levels of microorganisms and could be a vehicle for transmission of
and
. |
| doi_str_mv | 10.4315/0362-028X.JFP-19-273 |
| format | Article |
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and
at the farm and the packing facility or later during transportation and at retail. In Mexico, avocados are frequently sold in bulk at retail markets, where they are stored at room temperature for several hours or days and exposed to potential sources of microorganisms. These conditions may favor the entry, adhesion, survival, and biofilm formation of
and
. The aim of this study was to determine the occurrence of
and other
species and the levels of indicator microorganisms on the surface of avocados sold at retail markets. A total of 450 samples (
var. Hass) were acquired from retail markets located in Guadalajara, Mexico. One group of 225 samples was evaluated for the presence of
and for enumeration of aerobic plate counts, yeasts and molds,
coliforms, and
. The other 225 samples were processed for isolation of
and other
species. Microbial counts (log CFU per avocado) were 4.3 to 9.0 for aerobic plate counts, 3.3 to 7.1 for yeasts and molds, 3.3 to 8.2 for
3.3 to 8.4 for coliforms, and 3.3 to 6.2 for
. Eight samples (3.5%) were positive for
spp. and
were detected in 31 (13.8%) and 18 (8.0%) of 225 samples, respectively.
and
were isolated from 7.6, 1.3, and 0.9% of samples. These results indicate that avocados may carry countable levels of microorganisms and could be a vehicle for transmission of
and
.</description><identifier>ISSN: 0362-028X</identifier><identifier>EISSN: 1944-9097</identifier><identifier>DOI: 10.4315/0362-028X.JFP-19-273</identifier><identifier>PMID: 31851548</identifier><language>eng</language><publisher>United States: Elsevier Limited</publisher><subject>Avocados ; Biofilms ; Coliforms ; Colony Count, Microbial ; Consumption ; E coli ; Enterobacteriaceae ; Enumeration ; Escherichia coli - isolation & purification ; Food ; Food Contamination - analysis ; Food Microbiology ; Food safety ; Fruit - microbiology ; Irrigation ; Laboratories ; Listeria ; Listeria - isolation & purification ; Listeria monocytogenes ; Listeria monocytogenes - isolation & purification ; Mexico ; Microorganisms ; Mold ; Motility ; Pathogens ; Persea - microbiology ; Room temperature ; Salmonella ; Salmonella - isolation & purification ; Species ; Yeast ; Yeasts</subject><ispartof>Journal of food protection, 2020-01, Vol.83 (1), p.75-81</ispartof><rights>Copyright Allen Press Inc. Jan 2020</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c381t-4ad26e260b71948acfd12a1fe475bd30e348f84a4fa77ca77af309d05827652e3</citedby><cites>FETCH-LOGICAL-c381t-4ad26e260b71948acfd12a1fe475bd30e348f84a4fa77ca77af309d05827652e3</cites><orcidid>0000-0001-6816-937X ; 0000-0002-1970-2104 ; 0000-0002-0318-4664 ; 0000-0002-3801-0322 ; 0000-0002-5168-4866 ; 0000-0001-5144-0151</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/31851548$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>García-Frutos, Ramón</creatorcontrib><creatorcontrib>Martínez-Chávez, Liliana</creatorcontrib><creatorcontrib>Cabrera-Díaz, Elisa</creatorcontrib><creatorcontrib>Gutiérrez-González, Porfirio</creatorcontrib><creatorcontrib>Montañez-Soto, José Luis</creatorcontrib><creatorcontrib>Varela-Hernández, Juan José</creatorcontrib><creatorcontrib>Martínez-Gonzáles, Nanci Edid</creatorcontrib><title>Salmonella, Listeria monocytogenes, and Indicator Microorganisms on Hass Avocados Sold at Retail Markets in Guadalajara, Mexico</title><title>Journal of food protection</title><addtitle>J Food Prot</addtitle><description>Hass avocados may become contaminated with
and
at the farm and the packing facility or later during transportation and at retail. In Mexico, avocados are frequently sold in bulk at retail markets, where they are stored at room temperature for several hours or days and exposed to potential sources of microorganisms. These conditions may favor the entry, adhesion, survival, and biofilm formation of
and
. The aim of this study was to determine the occurrence of
and other
species and the levels of indicator microorganisms on the surface of avocados sold at retail markets. A total of 450 samples (
var. Hass) were acquired from retail markets located in Guadalajara, Mexico. One group of 225 samples was evaluated for the presence of
and for enumeration of aerobic plate counts, yeasts and molds,
coliforms, and
. The other 225 samples were processed for isolation of
and other
species. Microbial counts (log CFU per avocado) were 4.3 to 9.0 for aerobic plate counts, 3.3 to 7.1 for yeasts and molds, 3.3 to 8.2 for
3.3 to 8.4 for coliforms, and 3.3 to 6.2 for
. Eight samples (3.5%) were positive for
spp. and
were detected in 31 (13.8%) and 18 (8.0%) of 225 samples, respectively.
and
were isolated from 7.6, 1.3, and 0.9% of samples. These results indicate that avocados may carry countable levels of microorganisms and could be a vehicle for transmission of
and
.</description><subject>Avocados</subject><subject>Biofilms</subject><subject>Coliforms</subject><subject>Colony Count, Microbial</subject><subject>Consumption</subject><subject>E coli</subject><subject>Enterobacteriaceae</subject><subject>Enumeration</subject><subject>Escherichia coli - isolation & purification</subject><subject>Food</subject><subject>Food Contamination - analysis</subject><subject>Food Microbiology</subject><subject>Food safety</subject><subject>Fruit - microbiology</subject><subject>Irrigation</subject><subject>Laboratories</subject><subject>Listeria</subject><subject>Listeria - isolation & purification</subject><subject>Listeria monocytogenes</subject><subject>Listeria monocytogenes - isolation & purification</subject><subject>Mexico</subject><subject>Microorganisms</subject><subject>Mold</subject><subject>Motility</subject><subject>Pathogens</subject><subject>Persea - microbiology</subject><subject>Room 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Listeria monocytogenes, and Indicator Microorganisms on Hass Avocados Sold at Retail Markets in Guadalajara, Mexico</title><author>García-Frutos, Ramón ; Martínez-Chávez, Liliana ; Cabrera-Díaz, Elisa ; Gutiérrez-González, Porfirio ; Montañez-Soto, José Luis ; Varela-Hernández, Juan José ; Martínez-Gonzáles, Nanci Edid</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c381t-4ad26e260b71948acfd12a1fe475bd30e348f84a4fa77ca77af309d05827652e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Avocados</topic><topic>Biofilms</topic><topic>Coliforms</topic><topic>Colony Count, Microbial</topic><topic>Consumption</topic><topic>E coli</topic><topic>Enterobacteriaceae</topic><topic>Enumeration</topic><topic>Escherichia coli - isolation & purification</topic><topic>Food</topic><topic>Food Contamination - analysis</topic><topic>Food Microbiology</topic><topic>Food safety</topic><topic>Fruit - microbiology</topic><topic>Irrigation</topic><topic>Laboratories</topic><topic>Listeria</topic><topic>Listeria - isolation & purification</topic><topic>Listeria monocytogenes</topic><topic>Listeria monocytogenes - isolation & purification</topic><topic>Mexico</topic><topic>Microorganisms</topic><topic>Mold</topic><topic>Motility</topic><topic>Pathogens</topic><topic>Persea - microbiology</topic><topic>Room temperature</topic><topic>Salmonella</topic><topic>Salmonella - isolation & purification</topic><topic>Species</topic><topic>Yeast</topic><topic>Yeasts</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>García-Frutos, Ramón</creatorcontrib><creatorcontrib>Martínez-Chávez, Liliana</creatorcontrib><creatorcontrib>Cabrera-Díaz, Elisa</creatorcontrib><creatorcontrib>Gutiérrez-González, Porfirio</creatorcontrib><creatorcontrib>Montañez-Soto, José Luis</creatorcontrib><creatorcontrib>Varela-Hernández, Juan 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Collection</collection><collection>ProQuest Central Basic</collection><jtitle>Journal of food protection</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>García-Frutos, Ramón</au><au>Martínez-Chávez, Liliana</au><au>Cabrera-Díaz, Elisa</au><au>Gutiérrez-González, Porfirio</au><au>Montañez-Soto, José Luis</au><au>Varela-Hernández, Juan José</au><au>Martínez-Gonzáles, Nanci Edid</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Salmonella, Listeria monocytogenes, and Indicator Microorganisms on Hass Avocados Sold at Retail Markets in Guadalajara, Mexico</atitle><jtitle>Journal of food protection</jtitle><addtitle>J Food Prot</addtitle><date>2020-01</date><risdate>2020</risdate><volume>83</volume><issue>1</issue><spage>75</spage><epage>81</epage><pages>75-81</pages><issn>0362-028X</issn><eissn>1944-9097</eissn><abstract>Hass avocados may become contaminated with
and
at the farm and the packing facility or later during transportation and at retail. In Mexico, avocados are frequently sold in bulk at retail markets, where they are stored at room temperature for several hours or days and exposed to potential sources of microorganisms. These conditions may favor the entry, adhesion, survival, and biofilm formation of
and
. The aim of this study was to determine the occurrence of
and other
species and the levels of indicator microorganisms on the surface of avocados sold at retail markets. A total of 450 samples (
var. Hass) were acquired from retail markets located in Guadalajara, Mexico. One group of 225 samples was evaluated for the presence of
and for enumeration of aerobic plate counts, yeasts and molds,
coliforms, and
. The other 225 samples were processed for isolation of
and other
species. Microbial counts (log CFU per avocado) were 4.3 to 9.0 for aerobic plate counts, 3.3 to 7.1 for yeasts and molds, 3.3 to 8.2 for
3.3 to 8.4 for coliforms, and 3.3 to 6.2 for
. Eight samples (3.5%) were positive for
spp. and
were detected in 31 (13.8%) and 18 (8.0%) of 225 samples, respectively.
and
were isolated from 7.6, 1.3, and 0.9% of samples. These results indicate that avocados may carry countable levels of microorganisms and could be a vehicle for transmission of
and
.</abstract><cop>United States</cop><pub>Elsevier Limited</pub><pmid>31851548</pmid><doi>10.4315/0362-028X.JFP-19-273</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0001-6816-937X</orcidid><orcidid>https://orcid.org/0000-0002-1970-2104</orcidid><orcidid>https://orcid.org/0000-0002-0318-4664</orcidid><orcidid>https://orcid.org/0000-0002-3801-0322</orcidid><orcidid>https://orcid.org/0000-0002-5168-4866</orcidid><orcidid>https://orcid.org/0000-0001-5144-0151</orcidid><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
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| ispartof | Journal of food protection, 2020-01, Vol.83 (1), p.75-81 |
| issn | 0362-028X 1944-9097 |
| language | eng |
| recordid | cdi_proquest_journals_2348844373 |
| source | MEDLINE; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Alma/SFX Local Collection |
| subjects | Avocados Biofilms Coliforms Colony Count, Microbial Consumption E coli Enterobacteriaceae Enumeration Escherichia coli - isolation & purification Food Food Contamination - analysis Food Microbiology Food safety Fruit - microbiology Irrigation Laboratories Listeria Listeria - isolation & purification Listeria monocytogenes Listeria monocytogenes - isolation & purification Mexico Microorganisms Mold Motility Pathogens Persea - microbiology Room temperature Salmonella Salmonella - isolation & purification Species Yeast Yeasts |
| title | Salmonella, Listeria monocytogenes, and Indicator Microorganisms on Hass Avocados Sold at Retail Markets in Guadalajara, Mexico |
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