{"id":38258,"date":"2012-06-06T10:39:00","date_gmt":"2012-06-06T10:39:00","guid":{"rendered":"https:\/\/matis.is\/?p=38258"},"modified":"2021-10-21T10:59:49","modified_gmt":"2021-10-21T10:59:49","slug":"bacterial-succession-during-curing-process-of-a-skate-dipturus-batis-and-isolation-of-novel-strains","status":"publish","type":"post","link":"https:\/\/matis.is\/en\/greinar\/bacterial-succession-during-curing-process-of-a-skate-dipturus-batis-and-isolation-of-novel-strains\/","title":{"rendered":"Bacterial succession during curing process of a skate (Dipturus batis) and isolation of novel strains"},"content":{"rendered":"

Aims<\/h4>\n\n\n\n

To study the succession of cultivated and uncultivated microbes during the traditional curing process of skate.<\/p>\n\n\n\n

Methods and Results<\/h4>\n\n\n\n

The microbial diversity was evaluated by sequencing 16Sr RNA clone libraries and cultivation in variety of media from skate samples taken periodically during a 9-day curing process. A pH shift was observed (pH 6 \u00b7 64\u20139 \u00b7 27) with increasing trimethylamine (2 \u00b7 6 up to 75 \u00b7 6 mg N per 100 g) and total volatile nitrogen (TVN) (from 58 \u00b7 5 to 705 \u00b7 8 mg N per 100 g) but with relatively slow bacterial growth. Uncured skate was dominated by Oceanisphaera<\/em> and Pseudoalteromonas<\/em> genera but was substituted after curing by Photobacterium<\/em> and Aliivibrio<\/em> in the flesh and Pseudomonas<\/em> on the skin. Almost 50% of the clone library is derived from putative undiscovered species. Cultivation and enrichment strategies resulted in isolation of putatively new species belonging to the genera Idiomarina<\/em>, Rheinheimera<\/em>, Oceanisphaera<\/em>, Providencia<\/em> and Pseudomonas<\/em>. The most abundant genera able to hydrolyze urea to ammonia were Oceanisphaera<\/em>, Psychrobacter<\/em>, Pseudoalteromonas<\/em> and isolates within the Pseudomonas<\/em> genus.<\/p>\n\n\n\n

Conclusions<\/h4>\n\n\n\n

The curing process of skate is controlled and achieved by a dynamic bacterial community where the key players belong to Oceanisphaera<\/em>, Pseudoalteromonas<\/em>, Photobacterium<\/em>, Aliivibrio<\/em> and Pseudomonas<\/em>.<\/p>\n\n\n\n

Significance and Impact of the Study<\/h4>\n\n\n\n

For the first time, the bacterial population developments in the curing process of skate are presented and demonstrate a reservoir of many yet undiscovered bacterial species.<\/p>\n\n\n\n

Link to article<\/a><\/strong><\/p>","protected":false},"excerpt":{"rendered":"

Aims To study the succession of cultivated and uncultivated microbes during the traditional curing process of skate. 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