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Advanced Food Products and Process Engineering (SAFES) II: Application to Apple Combined Drying

  • P. Fito
  • N. Betoret
  • P. J. Fito
  • A. Andrés
Conference paper
Part of the Food Engineering series book series (FSES)

Different dehydration techniques are widely used to stabilize fruits. Numerous papers about dehydration methods such as air drying (AD) or osmotic dehydration (OD) are being published around the world. Vacuum impregnation (VI) pre-treatment may be used as a tool both to improve mass transfer and to develop engineered products (Fito et al., 2001).

In this paper, a solid food is considered as a monophasic and homogenous system, and product humidity is considered as the main variable related to quality characteristics of the final product being correlated with process conditions (mainly air temperature and velocity).

Nowadays, consumers are much more demanding, calling for products with good texture, color and nutritional value. Quality is becoming a more complex concept that affects the functionality of the product (Fito and Chiralt, 2003). In this situation, foods have to be defined by considering some of the structural, sensorial, physical-chemical and nutritive aspects.

The changes in every considered characteristic, along with drying processes, need to be taken into account, and mechanistic correlations among these characteristics and process variables must be established (Torreggiani and Bertolo, 2001).

A new methodology that allows us to consider structural, physical- chemical and nutritive aspects when defining a fruit, while also analyzing phase transitions, structural changes and transport phenomena in a systematic way (SAFES) (Fito et al., 2006) has been applied to dehydration of apple by combined methods.

Keywords

Soluble Solid Moisture Diffusivity Osmotic Dehydra Vacuum Impregnation External Phase 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Aguilera J.M., 2003, Drying and Dried Products Under the Microscope, Food Sci. Technol. Int. 9(3):137–143.CrossRefGoogle Scholar
  2. Barat, J.M., Albors, A., Chiralt, A., and Fito P., 1999, Equilibration of Apple Tissue in Osmotic Dehydration: Microstructural Changes, Drying Technology 17(7):1375–1386.CrossRefGoogle Scholar
  3. Bilbao, C., 2002, Estudio del Secado Combinado Aire/Microondas en Manzana Granny Smith. Tesis doctoral–UPV, UPV, Valencia.Google Scholar
  4. Fito, P., Andrés, A., Chiralt, A., and Pardo A., 1996, Coupling of Hydrodynamic Mechanism and Deformation-Relaxation Phenomena During Vacuum Treatments in Solid Porous Food-Liquid Systems, J. Food Eng. 27:229–240.CrossRefGoogle Scholar
  5. Fito, P., and Chiralt A., 1996, Osmotic Dehydration, an Approach to Modelling of Solid Food–Liquid Operations, in: Food Engineering 2000, Chapman and Hall, London.Google Scholar
  6. Fito, P., and Chiralt A., 2003, Food Matrix Engineering: The Use of the Water-Structure-Functionality Ensemble in Dried Food Product Development. Food Sci. Technol. Int. 9(3):151–156.CrossRefGoogle Scholar
  7. Fito, P., Chiralt, A., Barat, J.M., Andrés, A., Martínez-Monzó, J., and Martinez-Navarrete N., 2001, Vacuum Impregnation for Development of New Dehydrated Products, J Food Eng. 49: 297–302.CrossRefGoogle Scholar
  8. Fito, P., LeMaguer, M., Betoret, N., and Fito P.J., 2006, An Advanced Food Process Engineering to Design Real Food and Processes: The SAFES Methodology, J. Food Eng. (In Press).Google Scholar
  9. Salvatori, D., Andrés, A., Chiralt, A., and Fito P., 1998, The Response of Some Properties of Fruits to Vacuum Impregnation. J. Food Process Eng. 21:59–73.CrossRefGoogle Scholar
  10. Torreggiani, D., and Bertolo G., 2001, Osmotic Pre-Treatments in Fruit Processing: Chemical, Physical and Structural Effects, J. Food Eng. 49(2/3):247–253.CrossRefGoogle Scholar
  11. Trakoontivakorn, G., Patterson, M.E., and Swanson B.G., 1988, Scanning Electron Microscopy of Cellular Structure of Granny Smith and Red Delicious Apples, Food Microstructure 7:205–212.Google Scholar

Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • P. Fito
    • 1
  • N. Betoret
    • 1
  • P. J. Fito
    • 1
  • A. Andrés
    • 1
  1. 1.Instituto de Ingeniería de Alimentos para el DesarrolloUniversidad Politécnica de ValenciaSpain

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