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The impact of high hydrostatic pressure on inactivation and sublethal injury of foodborne pathogens in beetroot juice

100%

Nasilowska J., Sokolowska B., Fonberg-Broczek M.

Postępy Nauki i Technologii Przemysłu Rolno-Spożywczego

2016

tom 71

nr 1

High hydrostatic pressure (HHP) is a well known method currently used for food preservation. Nevertheless this treatment can also cause sublethal injury of foodborne pathogen cells, which could repair and become potentially dangerous for consumers. The survival of Listeria innocua CIP80.11T, Escherichia coli ATCC 8739 and the wild strains isolated from beetroot juice after HHP treatment (200 MPA, 300 MPa and 400 MPa) as well as the level of sublethal injuries in the surviving cells were investigated in this study. Lethal effect was reported after treatment at 400 MPa for the most of strains. The maximum level of sublethal injuries was reported after 5 minutes under pressure 300 MPa (L. innocua) and 400 MPa (E.coli).

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Exceptional cameral deposits in a sublethally injured Carboniferous orthoconic nautiloid from the Buckhorn Asphalt Lagerstatte in Oklahoma, USA

100%

Seuss B., Mapes R. H., Klug C., Nutzel A.

Acta Palaeontologica Polonica

2012

tom 57

nr 2

The cameral and intrasiphonal deposits of a Pennsylvanian straight nautiloid (Pseudorthoceratidae) are studied in order to understand the formation of these deposits. The specimens from the Buckhorn Asphalt deposit (Oklahoma) are exceptionally preserved including original aragonite and microstructures. The specimen investigated survived a predation attempt and shows bite marks on the phragmocone. This is the second report of an ectocochleate cephalopod and first report of an orthoconic nautiloid which survived massive damage of conch and siphuncle. For the first time, a high−magnesium calcitic mineralogy of cameral deposits is documented. These deposits were formed in alternation with aragonite in a chamber which was perforated during the unsuccessful predation attempt. The animal formed the chamber deposits throughout its entire lifetime and the siphuncle played a major role in formation of the cameral deposits.

Ograniczanie wyników

1 Acta Palaeontologica Polonica

1 Postępy Nauki i Technologii Przemysłu Rolno-Spożywczego

1 Fonberg-Broczek M.

1 Klug C.

1 Mapes R. H.

1 Nasilowska J.

1 Nutzel A.

1 Seuss B.

1 Sokolowska B.

1 2016

1 2012

Wyniki wyszukiwania

The impact of high hydrostatic pressure on inactivation and sublethal injury of foodborne pathogens in beetroot juice

Exceptional cameral deposits in a sublethally injured Carboniferous orthoconic nautiloid from the Buckhorn Asphalt Lagerstatte in Oklahoma, USA