Pierre Cresson

9 Questions 21 Answers 0 Followers

Questions related from Pierre Cresson

What protocol do you use to freeze-dry fish tissues?

We've just acquired a new freeze-dryer that allow us to perform freeze-drying with two steps and with accuracy on the level of vacuum and temperature to be used. I have been used to use old...

06 November 2017 2,002 1 View

Mercury integration time in fish muscle?

I'm wondering if someone is aware of studies investigating the integration time of mercury in fish tissues, mostly muscle. In other words, when a Hg concentration is measured in muscle, is it the...

30 August 2016 8,344 5 View

Is there any effect of freeze-drying on fish muscle lipid content?

I would like to know if someone is aware of papers documenting any effect of frozen storage and freeze-drying on total lipid content of fish muscle. Briefly, is there some lipid loss due to...

20 October 2015 1,127 8 View

Anyone familiar with conversion factor for contaminant concentrations relatively to dry or fresh weight?

I'm wondering if some of you are aware of existing conversion factors for levels of metallic contamination in fish muscle tissues. In the present work, I'm focusing on metallic contamination, so...

23 September 2015 8,878 5 View

What is the difference in cyp450 activity between flatfish and roundfish?

I'm currently working on a PCB contamination dataset in several flatfish and round fish species. I'd like to compare the cytochrome P450 activity to explain the inter-specific differences in PCB...

25 August 2015 9,849 4 View

Does anyone know of a lab performing compound-specific stable isotope analysis?

I'm currently planning some future projects, and I'm looking for a lab running amino-acids stable isotope analyses. Could someone provide me with the contact of such a lab, with the cost of one...

23 March 2015 2,371 3 View

Is lignin detected by PSA method ?

I have a dataset of carbohydrates concentrations measured in Posidonia oceanica (Mediterranean seagrass) leaves with the Dubois methods (ie the phenol sulfuric acid method). Since P. oceanica...

13 February 2015 1,994 3 View

Can anyone help with the contamination thresholds for marine mammals?

I'm currently working on contamination levels of a large range of molecules (PCB, PBDE, HAP, pesticides etc.) in marine mammals. I'm looking for threshold values which could allow me to say if...

09 April 2014 2,448 11 View

Is there an accepted definition for "deep sea" ?

I'm currently working on a project with some species sampled between 250 and 800 m in the Mediterranean Sea (eg Galeus melastomus, Lophius piscatorius etc.). I'm asking myself a question : do you...

27 February 2014 3,219 15 View