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Food division

Located within the Institut Agro Dijon, the DIVVA platform's Food Division has scientific expertise and a highly technical analytical facility dedicated to characterising food and pharmaceutical products (liquids, solids, gels and powders) and packaging at different scales, as well as carrying out accelerated ageing tests on food and pharmaceutical products (liquids, solids, gels and powders) and packaging.

 

A range of equipment for characterising the rheological, mechanical, thermal, structural and water sorption properties of food and pharmaceutical products and packaging:

 

  • Viscosimetry
  • Dynamic rheology
  • Traction-compression
  • Calorimetry
  • Tensiometry / Goniometry
  • Particle size
  • Sorption d'eau
  • Water sorption
  • Permeametry
  • Extraction
  • Dispersions

Rheology

  • Monitoring gelation, viscosity

Traction-compression

Extensibility, stickiness, firmness, friability (food, packaging ...)

Calorimetry

  • Melting temperature of fats or denaturation temperature of proteins

Tensiometry

  • Adhesion, surface hydrophobicity and wettability of a material

Permeability

  • Permeability (0₂, CO₂, N₂, He, H₂O) food packaging or oenological closures

Sorption

  • Sorption/desorption isotherms for water, solids and powders

Granulometry

  • Particle size distribution in liquid or solid media

Stability

  • Accelerated ageing test

Equipment in more detail

  • Viscosimetry
    • Rotovisco 1 Haake
    • Rapid Visco Analyzer Perten
    • Lovis Anton Paar
    Measured values
    • Viscosity of liquids
    Accessory
    • Temperature control (water bath or Peltier module)
  • Dynamic rheology
    • MCR 302 Anton Paar
    • METRAVIB VA 2000
    Measured values
    • Glass transition and secondary relaxation temperatures
    • Gel and solid storage and loss modules
    Accessories
    • Nitrogen sweep furnace,
    • Film traction module
    • Torsion clamps
  • Traction-Compression
    • Analyseur de texture TA-XT2i
    • Analyseur de texture TA-HD+
    Measured values
    • Young's modulus, resistance to rupture
    • Stickiness, firmness, friability of a product
    Accessories
    • 5, 25, 30, 100 et 500 kg load cells
    • Temperature controlled chamber
    • Extrusion cells, 3-point bending cells, film stretching grippers
    • Penetrometer cones
  • Calorimetry
    • Differential calorimetry :
      • DSC Q20 TA Instruments, DSC 1 Mettler Toledo
      • DSC 8000 Perkin Elmer (couplée Raman)
    • Microcalorimetry : µSC-4C SETARAM
    • Isothermal titration calorimetry : VP-ITC Microcal
    Measured values
    • Temperatures of glass transition, crystallisation, melting and denaturation of proteins
    • Thermodynamic interaction parameters (K, ΔG, ΔH, ΔS)
    Accessories
    • Mixing cells
    • Controlled humidity generator
  • Tensiometry / Goniometry
    • Tensiometer Krüs K100
    • Goniometer Krüss DSA 30
    Measured values
    • Surface tension of a liquid and a solid
    • Material wettability (film, cork)
    • Critical micellar concentration of surfactant
    Accessories
    • Temperature and humidity controlled chamber
    • Multi-syringes
    • Automatic mixing cells
  • Particles size
    • Laser granulometer : Malvern Mastersizer 3000
    • Dynamic light scattering : DLS CAD
    Measured values
    • Particle size distribution :
      • 0.1 µm -> 2 mm (laser granulometer)
      • 10 nm -> qq µm (DLS)
    Accessories
    • Temperature control (bain marie MS 3000, Peltier DLS CAD)
    • Analysis at different scattering angles (DLS CAD)
  • Water sorption
    • ProUmid SPSx-1µ Advance
    Measured values
    • Water sorption / sedorption isotherms for solids and powders
    Accessory
    • Temperature control
  • Spectroscopy
    • Relaxometer RMN Spinmaster Duo Stelar
    • RMN Minispec mq20 Brüker
    • Spectrofluorimeter 50-B Perkin Elmer
    • FTIR Spectrum 65 Perkin Elmer
    • Atomic absorption spectrometer contrAA600 Analytik Jena
    • Zeta potential meter CAD
    Measured values
    • Molecular mobility (kHz - MHz)
    • Relaxation time (RMN bas champ)
    • Conformational changes in proteins (spectrofluorimeter)
    • Macromolecule charging (zeta meter)
    • Quantity of metals (atomic absorption spectrometer)
    • Vibrational spectra (FTIR spectrometer)
    Accessory
    • Temperature control (RMS, spectrofluotimeter)
  • Permeametrie
    • Manometric equipment developed in the laboratory to measure gas transfer through oenological stoppers
    • Brugger GDP-C
    • Brugger GTT
    Measured values
    • Permeability of films to different gases (H20, O2, N2, CO2, etc.)
    • Permeability (O2, CO2) of oenological closures (natural cork, agglomerated corks, synthetic corks, screw caps)
    Accessory
    • Relative humidity and/or temperature control
  • Extraction
    • Microwave extractor Monowave 450 Anton Paar
    • Supercritical CO2/subcritical water extractor SFELab 100 mL SFE Process
    Accessory
    • Temperature control, co-solvent (Extracteur SFELab)
  • Dispersions
    • Turbiscan Lab Formulaction
    • High-pressure homogeniser Microfluidics LM10
    Measured values
    • Turbidity, flocculation, sedimentation, creaming (turbiscan Lab)
    Accessory
    • Temperature control (Turbiscan Lab)