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Microbial quality of edible seeds commercially available in southern Portugal

2022Journal article Restricted access
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dc.contributor.authorSilva, Daniela
dc.contributor.authorNunes, Patrícia A.
dc.contributor.authorMelo, Jessie
dc.contributor.authorQuintas, Célia
dc.date.accessioned2022-04-19T08:57:33Z
dc.date.available2022-04-19T08:57:33Z
dc.date.issued2022
dc.description.abstractIn the present work, the microbiological quality of sesame, flaxseed, chia, pumpkin sunflower seeds, a mix of seeds, as well as flaxseed flour, marketed in southern Portugal, were studied through the counting of aerobic microorganisms at 30 degrees C (AM), molds and yeast (M&Y), Escherichia coli (beta-glucuronidase positive) (beta-GP E. coli), Staphylococcus coagulase positive, and detection of Salmonella spp. The persistence of AM and M&Y populations were also counted in organic and non-organic flaxseed at 20 degrees C for 11 months. The seeds with the highest average of AM were flaxseed (1,3 x 10(6) CFU/g) followed by flaxseed flour (1,1 x 10(6) CFU/g) while the lowest level was found in chia (2,9 x 10(4) CFU/g). This seed also presented the lowest average values of filamentous fungi (9,8 x 10(2) CFU/g), whereas sunflower seeds had the highest levels (1,7 x 10(5) CFU/g). Flaxseed flour had the highest yeast counts (1,5 x 10(4) CFU/g). Although some samples had high levels of AM and fungi, beta-GP E. coli and Salmonella were not detected, therefore, they complied with the microbiological criteria of the European Union. The organic flaxseed contained higher numbers of AM and M&Y than the non-organic ones (p < 0.05). In addition, the storage of flaxseed at 20 degrees C resulted in changes of AM and M&Y, showing that these populations were able to remain viable after eleven months (AM Log 5.4-Log 5.6; M&Y Log 2.8 - Log 4.1). The results obtained in the present study, namely those high levels of AM and fungi (>10(6) and 10(4) CFU/g respectively), alert to the need of improving processing practices, storage/distribution conditions of edible seeds and derivatives, as well as the requirement of implementing adequate decontamination techniques.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.3934/microbiol.2022004pt_PT
dc.identifier.issn2471-1888
dc.identifier.urihttp://hdl.handle.net/10400.1/17768
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherAIMS Presspt_PT
dc.relationMediterranean Institute for Agriculture, Environment and Development
dc.subjectMicrobial qualitypt_PT
dc.subjectEdible seedspt_PT
dc.subjectSesamept_PT
dc.subjectFlaxseedpt_PT
dc.subjectChiapt_PT
dc.subjectPumpkinpt_PT
dc.subjectSunflowerpt_PT
dc.titleMicrobial quality of edible seeds commercially available in southern Portugalpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMediterranean Institute for Agriculture, Environment and Development
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F05183%2F2020/PT
oaire.citation.endPage52pt_PT
oaire.citation.issue1pt_PT
oaire.citation.startPage42pt_PT
oaire.citation.titleAIMS Microbiologypt_PT
oaire.citation.volume8pt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameNunes Cabrita
person.familyNameMelo
person.familyNameQuintas
person.givenNamePatrícia
person.givenNameJessie
person.givenNameCélia
person.identifier.ciencia-idEA14-D76B-FF6E
person.identifier.orcid0000-0002-7148-8950
person.identifier.orcid0000-0002-5911-426X
person.identifier.orcid0000-0001-9680-5089
person.identifier.scopus-author-id7006823084
person.identifier.scopus-author-id55606932100
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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