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| Registros recuperados: 41 | |
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| Baron, Regis. |
| Ce rapport fait suite au stage effectué au sein du laboratoire «Génie Alimentaire», de l'Institut Français de Recherche pour l'Exploitation de la MER. Ce stage fait partie du cycle de préparation à la Maîtrise de Sciences et Techniques en Systèmes Automatiques Industriels. Il s'est déroulé du 25 Février au 17 Mai 1991.Ce rapport porte sur l'étude du procédé d'extrusion. |
| Tipo: Text |
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| Ano: 1991 |
URL: http://archimer.ifremer.fr/doc/00137/24870/22958.pdf |
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| Baron, Regis; Couedel, Marielle; Joret, Camille; Garen, Pierre; Truquet, Philippe; Masselin, Pierre; Bardouil, Michele; Lassus, Patrick. |
| A simple system was used to simulate the effect of alternating toxic (paralytic shellfish poisoning toxins) and non-toxic microalgal diets on oyster feeding behaviors and rates of toxin accumulation. These experimental conditions were meant to reflect, to some extent, the incoming and outgoing fluxes of toxic algae observed at the mouth of the Penze estuary (Northern Brittany, France). Physiological and toxicological parameters were estimated based oil fluorescence measurements recorded continuously at the outlet of each experimental tank, which contained a single oyster. Q(tox), this variable describes toxin uptake in oysters, it was used (instead of the toxin ingestion rate): i) in simple graphical analyses, ii) as well as in one- and two-compartment... |
| Tipo: Text |
Palavras-chave: Skeletonema costatum; Alexandrium minutum; Fluorescence; Modeling; Kinetics; Toxin uptake; Shellfish toxin; PSP. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1400.pdf |
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| Baron, Regis; Havet, Michel; Solliec, Camille; Pierrat, Daniel; Touchard, Gerard. |
| The smoking process is a batch one with long duration processing (some hours). Deposition of smoke particles can be enhanced by electrostatic precipitation. However, a better knowledge of the fundamental physics is needed to optimize the process. We carried out experimental and numerical studies to obtain essential information on the smoke flow. First, experiments physically characterized the wood smoke. These measures lead us to study the turbulent two-phase flow using an algebraic slip model. The main coupling with electrical forces is taken into account through the slip velocity. Various assumptions were tested concerning the coupled phenomena in order to build an algorithm that is able to simulate these phenomena. Numerical resolutions are compared... |
| Tipo: Text |
Palavras-chave: Smoked salmon; Smoke particles; Electrostatic precipitators. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4695.pdf |
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| Baron, Regis; Socol, Marius; Arhaliass, A.; Bruzac, Sandrine; Le Roux, Karine; Del Pino, J. Rodriguez; Berge, Jean-pascal; Kaas, Raymond. |
| We describe a one-step bio-refinery process for shrimp composites by-products. Its originality lies in a simple rapid (6 h) biotechnological cuticle fragmentation process that recovers all major compounds (chitins, peptides and minerals in particular calcium). The process consists of a controlled exogenous enzymatic proteolysis in a food-grade acidic medium allowing chitin purification (solid phase), and recovery of peptides and minerals (liquid phase). At a pH of between 3.5 and 4, protease activity is effective, and peptides are preserved. Solid phase demineralization kinetics were followed for phosphoric, hydrochloric, acetic, formic and citric acids with pKa ranging from 2.1 to 4.76. Formic acid met the initial aim of (i) 99 % of demineralization yield... |
| Tipo: Text |
Palavras-chave: Bio-refinery; Acidic enzymatic proteolysis; Shrimp cuticles; Demineralization kinetics and modeling. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00281/39244/37809.pdf |
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| Bougaran, Gael; Le Dean, Loic; Lukomska, Ewa; Kaas, Raymond; Baron, Regis. |
| Starting microalgae continuous culture generally includes a preliminary batch culture to obtain sufficient cell density. It is possible to apply continuous regime from the beginning of the culture (IC mode) rather than to begin by an initial batch (IB mode). It is our purpose to check that both initial modes lead to identical steady-state cell characteristics. The microalga Isochrysis galbana affinis Tahiti was used for this comparative study. With an initial cell density of 5 x 10(5) cell ml(-1) and a dilution rate of about 1.0 d(-1), both IB and IC modes led to identical cell density once steady-state is reached between 6 and 8 d after inoculation in the two cases. Cell concentration of chlorophyll a and pheopigment a were found to be similar for IB and... |
| Tipo: Text |
Palavras-chave: Isochrysis; Cell quota; Photosynthesis; Steady state; Continuous culture. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/2003/publication-597.pdf |
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| Cardinal, Mireille; Baron, Regis; Kouakou, Christelle; Prost, Carole; Courcoux, Philippe. |
| Many papers have recently discussed the value of a free sorting method as a rapid and simple alternative to quantitative descriptive analysis, considered the reference tool for food sensorial characterization. The aim of the present paper is to evaluate whether this method of free sorting can also be used to investigate the influence of processing parameters. An experimental design was applied to production conditions of enzymatic hydrolysates from salmon by-products. The effect of four processing parameters (time and temperature of hydrolysis, sugar and antioxidant addition) on the odor of the hydrolysates was studied using a sorting task with 45 untrained panelists and a quantitative descriptive analysis carried out with 11 trained panelists. This study... |
| Tipo: Text |
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| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00179/29051/27488.pdf |
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| Cardinal, Mireille; Chaussy, Marianne; Donnay-moreno, Claire; Cornet, Josiane; Rannou, Cecile; Fillonneau, Catherine; Prost, Carole; Baron, Regis; Courcoux, Philippe. |
| To use salmon protein hydrolysates as food ingredients and to mask the fish odor, Maillard reactions were associated with enzymatic production of hydrolysates. The study explored an original approach based on regression trees (RT) and random forest (RF) methodologies to predict hydrolysate odor profiles from volatile compounds. An experimental design with four factors: enzyme/substrate ratio, quantity of xylose, hydrolysis and cooking times was used to create a range of enzymatic hydrolysates. Twenty samples were submitted to a trained panel for sensory descriptions of odor. Hydrolysate volatile compounds were extracted by means of Headspace Solid Phase MicroExtraction (HS-SPME) and analyzed using gas chromatography/mass spectrometry (GC-MS). The results... |
| Tipo: Text |
Palavras-chave: Sensory characteristics; Volatile compounds; HS-SPME/GC-MS; Regression tree; Random forest; Hydrolysate; Maillard reactions. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00624/73590/73024.pdf |
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| Cardinal, Mireille; Cornet, Josiane; Serot, Thierry; Baron, Regis. |
| The relationship between smoking parameters and odour characteristics, evaluated by a trained sensory panel.. were studied on smoked herring. In addition, a possible correlation between the content of 10 phenolic compounds and sensory perceptions was investigated. Five smoking techniques were applied, combining smoke production conditions, performed by pyrolysis of beech wood sawdust or by friction of beech wood log, with smoke deposition, either in a controlled kiln (traditional smoking) or by an electrostatic process. In the fifth smoking technique, a purified condensate of beech smokes was vaporised on fish fillets in the smokehouse. The time of smoking was 3 It for traditional smoking and the liquid smoke atomisation process and 12 min for the... |
| Tipo: Text |
Palavras-chave: Odour characteristics; Sensory evaluation; Phenolic compounds; Smoking; Herring. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-827.pdf |
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| Doudard, Karine; Chim, Liet; Arhaliass, Abdellah; Przybyla, Cyrille; Baron, Regis. |
| This work focuses on available bio resources transformation such as by-catches or fish by-products and marine plants (seaweed and microalgae) as ren circuit . The objective is to make this production as autonomous and sustainable as possible and fitted to the idea of circular economy. Thanks to previous projects, it seems that by-catches could be a plentiful source of proteins for fish. The challenge associated with this type of aquaculture formulations relies on the ability to incorporate abundant resources readily available and the significant reduction of certain energy‐consuming steps (such as drying) in order to minimize the environmental impact of a fish feed production. The adequacy of this strategy (fresh raw material and wet feed) with a... |
| Tipo: Text |
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| Ano: 2018 |
URL: http://archimer.ifremer.fr/doc/00456/56736/58525.pdf |
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| Gueguen, Marielle; Bardouil, Michele; Baron, Regis; Lassus, Patrick; Truquet, Philippe; Massardier, Julie; Amzil, Zouher. |
| Contamination of shellfish by paralytic shellfish poisoning ( PSP) toxins poses an economic threat to shellfish farmers. As contaminated shellfish cannot be harvested for long periods of time, it would be very useful to develop processes to optimise and shorten their detoxification. In this study, Pacific oysters Crassostrea gigas were first experimentally contaminated over a period of 13 days with a continuous flow of toxic Alexandrium minutum cultures at concentrations ranging from 150 to 200 cell ml(-1) ( toxin content after 13 days of contamination 438 mu g STX equiv. 100 g(-1) wet weight). Then, two different detoxification treatments were tested and showed detoxification rates greater than those observed in coastal environments. The first treatment... |
| Tipo: Text |
Palavras-chave: Alexandrium minutum; Crassostrea gigas; Detoxification; Inorganic matter; Organic matter; PSP; Paralytic shellfish poisoning. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-3896.pdf |
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| Gueguen, Marielle; Baron, Regis; Bardouil, Michele; Haberkorn, Hansy; Soudant, Philippe; Truquet, Philippe; Lassus, Patrick. |
| The purpose of this study was to assess paralytic phycotoxin uptake in diploid and triploid oysters at two stages of their sexual cycle corresponding to their status in early summer (June) and winter (November). Samples of diploid and triploid oysters were exposed to a toxic culture of Alexandrium minutum for 4 days in each season. No significant differences in filtration or clearance rates were observed during either November or June experiments. When diploid oysters were at resting stage (November), toxin uptake showed no significant difference between the ploidy classes. In contrast, when the diploid oysters were at the peak of their sexual maturation (June), the triploid oysters were seen to accumulate almost double the amount of paralytic toxins as... |
| Tipo: Text |
Palavras-chave: Paralytic shellfish poisoning; Crassostrea gigas; Diploid; Triploid; Contamination. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00087/19796/17487.pdf |
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| Gueguen, Marielle; Baron, Regis; Bardouil, Michele; Truquet, Philippe; Haberkorn, Hansy; Lassus, Patrick; Barille, Laurent; Amzil, Zouher. |
| The aim of this study was to evaluate the importance of biotransformation of paralytic shellfish toxins during the detoxification process in contaminated oysters. Mathematical models based upon the detoxification patterns of digestive gland and other tissues were developed. It was demonstrated that biotransformations do not seem to play an important role in digestive gland or other tissue detoxification kinetics with our data set. Moreover, different toxin transfers from digestive gland toward other tissues were investigated. No significant transfer was highlighted in our data set. These first conclusions were drawn after comparing the results obtained from 13 biotransformations and identifiable transfer scenarios. Finally, to determine a more robust... |
| Tipo: Text |
Palavras-chave: Detoxification kinetics modelling; Biotransformation of saxitoxin analogues; Oyster. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00049/16047/14309.pdf |
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| Gueguen, Marielle; Lassus, Patrick; Laabir, Mohamed; Bardouil, Michele; Baron, Regis; Sechet, Veronique; Truquet, Philippe; Amzil, Zouher; Barille, Laurent. |
| The occurrence of new phytoplankton species in a coastal area may be explained by the import of shellfish containing whole live algal cells in their digestive tracts. Indeed, shellfish containing toxic algal cells can induce both primary contaminations in safe areas ( initially free from toxic microalgae), and secondary contaminations of other shellfish growing in the same area via the faeces of the imported animals. To mitigate this problem, shellfish need to be placed in a separate holding tank and their intestinal content purged. For a deeper understanding of the risks associated with transferring contaminated shellfish, oysters ( Crassostrea gigas) and mussels ( Mytilus edulis) were purposely fed either Alexandrium minutum or A. catenella (... |
| Tipo: Text |
Palavras-chave: Risk assessment; Toxic phytoplankton; Uptake; Gut passage; Mytilus edulis; Crassostrea gigas. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-3897.pdf |
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| Havet, Michel; Baron, Regis; Le Niliot, Anne. |
| Le laboratoire Génie Alimentaire de l'IFREMER travaille depuis quelques années sur le procédé de fumage en utilisant1 une enceinte climatisée industrielle. Pour optimiser ce procédé afin d'en tirer le meilleur partie pour nos différentes recherches, il est apparu indispensable de modéliser et simuler l'écoulement des particules de fumée. Ce travail nécessite, à la fois, un recherche bibliographique critique très pointue et un travail de simulation avec des outils logiciels (code de calcul CFD) sophistiqués. Ne disposant pas des moyens nécessaires en interne, le laboratoire a donc choisi de contractualisé cette tâche avec l'ENITIAA. |
| Tipo: Text |
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| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/00134/24521/22550.pdf |
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| Registros recuperados: 41 | |
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