Effect of Modified Atmosphere Package (MAP) on the Loads of Microbial Indicators of Ground Beef
The safety of ground beef remains a critical concern in the food industry, driving the development of innovative packaging technologies designed to extend shelf life while preserving product quality and minimizing microbial growth. This study evaluated the effect of modified atmosphere packaging (MA...
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| Format: | Tesis |
| Language: | Inglés |
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Zamorano: Escuela Agrícola Panamericana
2025
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| Online Access: | https://hdl.handle.net/11036/7831 |
| _version_ | 1855501477832818688 |
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| author | Nájera V., Alexandra |
| author2 | Acosta, Adela |
| author_browse | Acosta, Adela Nájera V., Alexandra |
| author_facet | Acosta, Adela Nájera V., Alexandra |
| author_sort | Nájera V., Alexandra |
| collection | Biblioteca Digital Zamorano |
| description | The safety of ground beef remains a critical concern in the food industry, driving the development of innovative packaging technologies designed to extend shelf life while preserving product quality and minimizing microbial growth. This study evaluated the effect of modified atmosphere packaging (MAP) on the microbial loads of indicators in ground beef. The packaging technologies tested include three MAP treatments, MAP1: 0.4% nitric oxide (NO) with 99.6% nitrogen (N2), MAP2: 0.4% carbon monoxide (CO) with 30% carbon dioxide (CO2) and 69.6% N2, and a high oxygen MAP3: (80% O2, 20% CO2). Traditional packaging methods such as polyvinyl chloride (PVC) overwrap and vacuum roll stock were used as controls. Aerobic Counts (AC), Enterobacteriaceae (EB), Lactic Acid Bacteria (LAB), and Aerobic Psychrotrophs (P-AC) were monitored over a four-day storage period. The results revealed that MAP did not demonstrate a significant advantage over PVC or Roll Stock Vacuum packaging in inhibiting the growth of aerobic, enterobacteriaceae, psychrotrophic, and lactic acid bacteria throughout the storage period. Interactions between time and package type were observed in bacterial growth patterns, with all package types starting with low microbial counts. However, no significant differences in bacterial growth were found over the four-day storage time. The findings highlight the limited impact of MAP on extending the microbial shelf-life of ground beef compared to conventional packaging methods during short-term storage. |
| format | Tesis |
| id | ZAMORANO7831 |
| institution | Universidad Zamorano |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Zamorano: Escuela Agrícola Panamericana |
| publisherStr | Zamorano: Escuela Agrícola Panamericana |
| record_format | dspace |
| spelling | ZAMORANO78312025-01-16T15:25:21Z Effect of Modified Atmosphere Package (MAP) on the Loads of Microbial Indicators of Ground Beef Nájera V., Alexandra Acosta, Adela Legako, Jerrad Biochar economía circular gestión de residuos orgánicos pirólisis lenta The safety of ground beef remains a critical concern in the food industry, driving the development of innovative packaging technologies designed to extend shelf life while preserving product quality and minimizing microbial growth. This study evaluated the effect of modified atmosphere packaging (MAP) on the microbial loads of indicators in ground beef. The packaging technologies tested include three MAP treatments, MAP1: 0.4% nitric oxide (NO) with 99.6% nitrogen (N2), MAP2: 0.4% carbon monoxide (CO) with 30% carbon dioxide (CO2) and 69.6% N2, and a high oxygen MAP3: (80% O2, 20% CO2). Traditional packaging methods such as polyvinyl chloride (PVC) overwrap and vacuum roll stock were used as controls. Aerobic Counts (AC), Enterobacteriaceae (EB), Lactic Acid Bacteria (LAB), and Aerobic Psychrotrophs (P-AC) were monitored over a four-day storage period. The results revealed that MAP did not demonstrate a significant advantage over PVC or Roll Stock Vacuum packaging in inhibiting the growth of aerobic, enterobacteriaceae, psychrotrophic, and lactic acid bacteria throughout the storage period. Interactions between time and package type were observed in bacterial growth patterns, with all package types starting with low microbial counts. However, no significant differences in bacterial growth were found over the four-day storage time. The findings highlight the limited impact of MAP on extending the microbial shelf-life of ground beef compared to conventional packaging methods during short-term storage. 2025-01-16T20:28:14Z 2025-01-16T20:28:14Z 2024 Thesis https://hdl.handle.net/11036/7831 eng Copyright Escuela Agrícola Panamericana, Zamorano https://creativecommons.org/licenses/by-nc-nd/3.0/es/ application/pdf Zamorano: Escuela Agrícola Panamericana |
| spellingShingle | Biochar economía circular gestión de residuos orgánicos pirólisis lenta Nájera V., Alexandra Effect of Modified Atmosphere Package (MAP) on the Loads of Microbial Indicators of Ground Beef |
| title | Effect of Modified Atmosphere Package (MAP) on the Loads of Microbial Indicators of Ground Beef |
| title_full | Effect of Modified Atmosphere Package (MAP) on the Loads of Microbial Indicators of Ground Beef |
| title_fullStr | Effect of Modified Atmosphere Package (MAP) on the Loads of Microbial Indicators of Ground Beef |
| title_full_unstemmed | Effect of Modified Atmosphere Package (MAP) on the Loads of Microbial Indicators of Ground Beef |
| title_short | Effect of Modified Atmosphere Package (MAP) on the Loads of Microbial Indicators of Ground Beef |
| title_sort | effect of modified atmosphere package map on the loads of microbial indicators of ground beef |
| topic | Biochar economía circular gestión de residuos orgánicos pirólisis lenta |
| url | https://hdl.handle.net/11036/7831 |
| work_keys_str_mv | AT najeravalexandra effectofmodifiedatmospherepackagemapontheloadsofmicrobialindicatorsofgroundbeef |