• Reduce text

    Reduce text
  • Restore text size

    Restore text size
  • Increase the text

    Increase the text
  • Print

Rangées de graines.. © INRA, Elena Schweitzer © Fotolia

Our results

  1. Introduction
  2. Research and Innovation 2018 - For Food and Biobased Products
  3. Dry-cured ham: a process simulator can now define routes of manufacture that yield lower-salt products
  4. Does organically-farmed meat contain fewer chemical contaminants?
  5. The way in which proteins aggregate when heated may change their sensitising potency
  6. Enhancing the viability of spray-dried probiotic bacteria by stimulating their stress tolerance
  7. Human milk digestion in the preterm infant: impact of technological treatments
  8. Research & Innovation 2017 - For Food and Biobased Products
  9. To stick or not to stick? Pulling pili sheds new light on biofilm formation
  10. When biopolymers selfassemble: a balance between energy and entropy.
  11. Mimicking the gastrointestinal digestion in a lab-on-a-chip:the microdigester
  12. How a milk droplet becomes a powder grain
  13. Research & Innovation 2016 - For Food and Bioproducts
  14. A new process for the biorefining of plants
  15. Under the UV light : the bacterial membrane
  16. Reverse engineering or how to rebuild ... bread!
  17. Green Chemistry: a step towards lipid production in yeast
  18. Individually designed neo-enzymes for antibacterial vaccines
  19. Multi-scale mechanical modelling: from the nanometric scale to the macroscopic properties of bread crumb
  20. Minimill: 500 g to assess the milling value of soft wheats
  21. Microbial production of lipids for energy or chemical purposes
  22. The discrete role of ferulic acid in the assembly of lignified cell wall
  23. Eco-design of composites made from wood co-products
  24. Analysis of volatile compounds enables the authentication of a poultry production system
  25. Nanoparticles as capping agents for biopolymers microscopy
  26. Pasteurisation, UHT, microfiltration...All the processes don't affect the nutritional quality of milk in the same way
  27. Integration of expert knowledge applied to cheese ripening
  28. Controlling cheese mass loss during ripening
  29. The shape memory of starch
  30. Research & Innovation 2015 - For Food & Biobased Products
  31. Behaviour of casein micelles during milk filtering operations
  32. Overaccumulation of lipids by the yeast S. cerevisiae for the production of biokerosine
  33. Sequential ventilation in cheese ripening rooms: 50% electrical energy savings
  34. An innovative process to extract bioactive compounds from wheat
  35. Diffusion weighted MRI: a generic tool for the microimaging of lipids in food matrices
  36. Characterization of a major gene of anthocyanin biosynthesis in grape berry
  37. New enzyme activity detectors made from semi-reflective biopolymer nanolayers
  38. Improving our knowledge about the structure of the casein micelle
  39. Heating milk seems to favour the development of allergy in infants
  40. Fun with Shape
  41. Using volatile metabolites in meat products to detect livestock contamination by environmental micropollutants
  42. SensinMouth, when taste makes sense
  43. A decision support system for the fresh fruit and vegetable chain based on a knowledge engineering approach
  44. SOLEIL casts light on the 3D structure of proteins responsible for the stabilisation of storage lipids in oilseed plants
  45. A close-up view of the multi-scale protein assembly process
  46. Controlling the drying of infant dairy products by taking water-constituent interactions into account
  47. Polysccharide nanocrystals to stabilise pickering emulsions
  48. Discovery of new degradative enzymes of plant polysaccharides in the human intestinal microbiome
  49. A durum wheat flour adapted for the production of traditional baguettes
  50. Virtual modelling to guide the construction of « tailored-made » enzymes
  51. How far can we reduce the salt content of cooked meat products?
  52. Diffusion of organic substances in polymer materials: beyond existing scaling laws
  53. Smart Foams : various ways to destroy foams on demand !
  54. Dates, rich in tannins and yet neither bitter nor astringent
  55. Sodium content reduction in food
  56. Research & Innovation 2014

Dry-cured ham: a process simulator can now define routes of manufacture that yield lower-salt products

Nutritional imperatives mean that makers of dry-cured ham need to reduce the amount of salt in their products. However, any over-strong drop in salt content will lead to excessive proteolysis, causing texture problems that can undermine slicing yields and create microbiological stability issues.

The 3D version of the ‘numerical ham’ model developed here can quantitatively predict the space-and-time course of proteolysis index, water content, salt content and water activity (aw) and the kinetics of weight loss inside a real ham geometry.

Updated on 10/23/2018
Published on 10/22/2018

The model has been tested at a big industry partner, where it served to estimate—after a 10h computation—the extra time needed at the low-temperature rest phase for two batches of hams produced at 25%-shorter and 33%-shorter salting-phase times to reach the same aw values at the end of the rest phase as normally-salted hams.  The model estimated this time as 3 weeks.

Work is currently underway to bring a number of improvements, chiefly integration of the strong drying-driven variation in ham volume (that can shrink 30%–40% of initial volume), in order to more accurately predict in-ham salt diffusion patterns.

Scientific contact(s):

Associated Division(s):
Science for Food and Bioproduct Engineering

Find out more


UMR Institut Pascal, Université Clermont-Auvergne ; ADIV, IFIP Institut du Porc

projet ANR Na- ANR-09-ALIA-013-01, 2010-2013

On the subject of

Read more

Developing a multi-physical  nite element-based model that predicts water and salt transfers, proteolysis and water activity during the salting and post-salting stages of dry-cured ham process

(2018) Journal of Food Engineering. Harkouss R, Chevarin C, Daudin JD, Sicard J, Mirade PS