Evolution of grain microbiota during hermetic storage of corn (Zea mays L.)
Respiration of biotic components of the grain ecosystem generates self-modified atmospheres (oxygen reduced and carbon dioxide enriched) during hermetic storage. The effect of temperature, moisture content and modified atmospheres on the evolution of maize microbiota is not entirely known. In this s...
| Autores principales: | , , , , |
|---|---|
| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2021
|
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/8956 https://www.sciencedirect.com/science/article/abs/pii/S0022474X21000278 https://doi.org/10.1016/j.jspr.2021.101788 |
| _version_ | 1855036127654707200 |
|---|---|
| author | Marcos Valle, Facundo Castellari, Claudia Carla Yommi, Alejandra Karina Pereyra, M.A. Bartosik, Ricardo Enrique |
| author_browse | Bartosik, Ricardo Enrique Castellari, Claudia Carla Marcos Valle, Facundo Pereyra, M.A. Yommi, Alejandra Karina |
| author_facet | Marcos Valle, Facundo Castellari, Claudia Carla Yommi, Alejandra Karina Pereyra, M.A. Bartosik, Ricardo Enrique |
| author_sort | Marcos Valle, Facundo |
| collection | INTA Digital |
| description | Respiration of biotic components of the grain ecosystem generates self-modified atmospheres (oxygen reduced and carbon dioxide enriched) during hermetic storage. The effect of temperature, moisture content and modified atmospheres on the evolution of maize microbiota is not entirely known. In this study, corn grain samples were conditioned to different moisture contents (14.3, 16.5 and 18.4%) and hermetically stored in glass jars at 15, 25 and 35 °C. Grain samples were collected at different stages of modified atmosphere evolution of each experiment: T0 (O2: 21% initial concentration); T1 (O2: 10%); T2 (O2: 0%); T3 (CO2 maximum concentration stabilized). Microbiota was quantified with Petri dish counts using selective growth media for different microbial groups. Additionally, ethanol, acetic acid and lactic acid were measured for monitoring anaerobic activity. Results indicated that there was a high correlation between water activity (aw) and the time to reach anaerobiosis (R2 of 0.85), the maximum CO2 concentration (R2 of 0.86), and the reduction of filamentous fungi and bacterial counts during hermetic storage (R2 of 0.72 and 0.48, respectively). A differential behavior of the hermetic storage was observed according to aw of the grain, and a general conceptual model is offered for its understanding. It was concluded that modified atmospheres reduced or inhibited microbial growth in stored corn, and that aw was the most influential factor in the time to reach anaerobiosis, maximum CO2 concentration, and the filamentous fungi and bacterial counts reduction during hermetic storage. |
| format | info:ar-repo/semantics/artículo |
| id | INTA8956 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA89562024-04-22T10:18:43Z Evolution of grain microbiota during hermetic storage of corn (Zea mays L.) Marcos Valle, Facundo Castellari, Claudia Carla Yommi, Alejandra Karina Pereyra, M.A. Bartosik, Ricardo Enrique Maíz Zea Mays Granos Almacenamiento Atmósfera Controlada Hongos Microorganismos Maize Grain Controlled Atmosphere Storage Fungi Microorganisms Respiration of biotic components of the grain ecosystem generates self-modified atmospheres (oxygen reduced and carbon dioxide enriched) during hermetic storage. The effect of temperature, moisture content and modified atmospheres on the evolution of maize microbiota is not entirely known. In this study, corn grain samples were conditioned to different moisture contents (14.3, 16.5 and 18.4%) and hermetically stored in glass jars at 15, 25 and 35 °C. Grain samples were collected at different stages of modified atmosphere evolution of each experiment: T0 (O2: 21% initial concentration); T1 (O2: 10%); T2 (O2: 0%); T3 (CO2 maximum concentration stabilized). Microbiota was quantified with Petri dish counts using selective growth media for different microbial groups. Additionally, ethanol, acetic acid and lactic acid were measured for monitoring anaerobic activity. Results indicated that there was a high correlation between water activity (aw) and the time to reach anaerobiosis (R2 of 0.85), the maximum CO2 concentration (R2 of 0.86), and the reduction of filamentous fungi and bacterial counts during hermetic storage (R2 of 0.72 and 0.48, respectively). A differential behavior of the hermetic storage was observed according to aw of the grain, and a general conceptual model is offered for its understanding. It was concluded that modified atmospheres reduced or inhibited microbial growth in stored corn, and that aw was the most influential factor in the time to reach anaerobiosis, maximum CO2 concentration, and the filamentous fungi and bacterial counts reduction during hermetic storage. EEA Balcarce Fil: Marcos Valle, Facundo. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Fil: Marcos Valle, Facundo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Fil: Castellari, Claudia. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Fil: Castellari, Claudia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Fil: Yommi, Alejandra Karina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Fil: Yommi, Alejandra Karina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible; Argentina. Fil: Pereyra, M.A. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Fil: Pereyra, M.A. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Fil: Bartosik, Ricardo Enrique. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Fil: Bartosik, Ricardo Enrique. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible; Argentina. 2021-03-23T11:29:22Z 2021-03-23T11:29:22Z 2021-03-17 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/8956 https://www.sciencedirect.com/science/article/abs/pii/S0022474X21000278 0022-474X https://doi.org/10.1016/j.jspr.2021.101788 eng info:eu-repo/semantics/restrictedAccess application/pdf Elsevier Journal of Stored Products Research 92 : 101788 (May 2021) |
| spellingShingle | Maíz Zea Mays Granos Almacenamiento Atmósfera Controlada Hongos Microorganismos Maize Grain Controlled Atmosphere Storage Fungi Microorganisms Marcos Valle, Facundo Castellari, Claudia Carla Yommi, Alejandra Karina Pereyra, M.A. Bartosik, Ricardo Enrique Evolution of grain microbiota during hermetic storage of corn (Zea mays L.) |
| title | Evolution of grain microbiota during hermetic storage of corn (Zea mays L.) |
| title_full | Evolution of grain microbiota during hermetic storage of corn (Zea mays L.) |
| title_fullStr | Evolution of grain microbiota during hermetic storage of corn (Zea mays L.) |
| title_full_unstemmed | Evolution of grain microbiota during hermetic storage of corn (Zea mays L.) |
| title_short | Evolution of grain microbiota during hermetic storage of corn (Zea mays L.) |
| title_sort | evolution of grain microbiota during hermetic storage of corn zea mays l |
| topic | Maíz Zea Mays Granos Almacenamiento Atmósfera Controlada Hongos Microorganismos Maize Grain Controlled Atmosphere Storage Fungi Microorganisms |
| url | http://hdl.handle.net/20.500.12123/8956 https://www.sciencedirect.com/science/article/abs/pii/S0022474X21000278 https://doi.org/10.1016/j.jspr.2021.101788 |
| work_keys_str_mv | AT marcosvallefacundo evolutionofgrainmicrobiotaduringhermeticstorageofcornzeamaysl AT castellariclaudiacarla evolutionofgrainmicrobiotaduringhermeticstorageofcornzeamaysl AT yommialejandrakarina evolutionofgrainmicrobiotaduringhermeticstorageofcornzeamaysl AT pereyrama evolutionofgrainmicrobiotaduringhermeticstorageofcornzeamaysl AT bartosikricardoenrique evolutionofgrainmicrobiotaduringhermeticstorageofcornzeamaysl |