Bacterial diversity in six species of fresh edible seaweeds submitted to high pressure processing and long-term refrigerated storage
| Autor: | Antonia Picon, Manuel Nuñez, Ana del Olmo |
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| Přispěvatelé: | Ministerio de Economía y Competitividad (España), Picon, Antonia, del Olmo, Ana, Nuñez, Manuel |
| Rok vydání: | 2021 |
| Předmět: |
16S rDNA sequencing
Codium fragile Food Handling Biodiversity Biology Shelf life Microbiology 03 medical and health sciences Algae Chlorophyta Chondrus crispus Vegetables Himanthalia elongata High pressure processing Food science Bacillaceae 030304 developmental biology 0303 health sciences Bacteria 030306 microbiology Microbiota Seaweed biology.organism_classification Food Storage Ulva lactuca Species richness Food Science |
| Zdroj: | Food Microbiology. 94:103646 |
| ISSN: | 0740-0020 |
| Popis: | 15 Pág. Departamento de Tecnología de Alimentos Seaweeds are highly perishable foods due to their richness in nutrients. High pressure processing (HPP) has been applied for extending the shelf life of fresh seaweeds but there is no information on the effect of HPP on the bacterial diversity of seaweeds. The culturable bacteria of six species of fresh edible seaweeds (green seaweeds Codium fragile and Ulva lactuca, brown seaweeds Himanthalia elongata, Laminaria ochroleuca and Undaria pinnatifida, and red seaweed Chondrus crispus) were investigated and compared to those of HPP-treated (400 and 600 MPa for 5 min) seaweeds, at the start and end of their refrigerated storage period. A total of 523 and 506 bacterial isolates were respectively retrieved from untreated and HPP-treated seaweeds. Isolates from untreated seaweeds belonged to 18 orders, 35 families, 71 genera and 135 species whereas isolates from HPP-treated seaweeds belonged to 13 orders, 23 families, 43 genera and 103 species. HPP treatment significantly reduced the number of isolates belonging to 6 families and greatly increased the number of Bacillaceae isolates. At the end of storage, decreases in bacterial diversity at the genus and species level were observed for untreated as well as for HPP-treated seaweeds. This study was supported by project AGL 2013-42911-R (Ministerio de Economía y Competitividad, Spain). |
| Databáze: | OpenAIRE |
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