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Tejedor-Calvo E - Autor o Coautor
Garcia-Barreda S - Autor o Coautor
Sanchez S - Autor o Coautor
Marco P - Autor (correspondencia)
Publicaciones > Artículo

Effect of bacterial strains isolated from stored shiitake (Lentinula edodes) on mushroom biodeterioration and mycelial growth

Publicado en:Agronomy-Basel. 10 (6): - 2020-06-01 10(6), doi: 10.3390/agronomy10060898

Tejedor-Calvo E; Garcia-Barreda S; Sanchez S; Marco P;


Centro de Investigación y Tecnología Agroalimentaria de Aragón - Entidad de origen
CITA Zaragoza Univ, Agrifood Res & Technol Ctr Aragon CITA, Forest Resources Unit, Agrifood Inst Aragon IA2, Av Montanana 930, Zaragoza 50059, Spain - Autor o Coautor
Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria - Financiador
Univ Autonoma Madrid, Inst Food Sci Res CIAL UAM CSIC, Dept Prod & Characterizat Novel Foods, C Nicolas Cabrera 9,Campus Cantoblanco, Madrid 28049, Spain - Autor o Coautor
Universidad Autónoma de Madrid - Autor o Coautor
Universidad de Zaragoza - Autor o Coautor
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Resúmen: Shiitake (Lentinula edodes) is a fungus that attracts the attention of consumers and researchers due to its flavour and bioactive compounds with biological activities. However, it swiftly loses quality because of its short shelf life. The present work evaluated the shelf life of cultivated shiitake carpophores with a weekly monitoring of the physico-chemical, microbiological, and sensory parameters under three different storage conditions. To establish the mycopathogenicity of fruitbody-inhabiting bacterial microbiota, 48 strains were isolated from shiitake throughout its storage time and subsequently inoculated on cap cuticles and slices. Additionally, an antibiogram of these bacterial strains against shiitake mycelium was performed. Shiitake had a total microbial load of 5 log cfu/g, composed mainly of Pseudomonas genus, followed by Enterobacteriaceae family, and moulds and yeasts. Among the 48 bacterial strains identified, 18 belonged to the Enterobacteriaceae family and 21 to the Pseudomonas genus. The biodeterioration capacity of the isolated strains increased throughout the conservation period, with slices being more damaged than cap cuticles. We observed a mycopathogenic behaviour of Burkholderia sp., Ewingella americana, Serratia sp., Microbacterium sp. and Rahnella sp. strains, although only the latter highly inhibited shiitake vegetative mycelium growth.

Palabras clave: Antibiogram; Bacteria; Brown blotch; Cultivated mushrooms; Disease; Electron-beam; Gamma-irradiation; Microbial-populations; Modified atmosphere; Mycopathogen; Rahnella; Sensory characteristics; Shelf life; Shelf-life; Shiitake; Wild

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