Food and Bioprocess Technology

, Volume 6, Issue 12, pp 3554–3563 | Cite as

Effect of Ultrasound-Assisted Osmotic Dehydration as a Pretreatment on Deep Fat Frying of Potatoes

  • Vahid Mohammadpour Karizaki
  • Serpil SahinEmail author
  • Gulum Sumnu
  • Mohammad Taghi Hamed Mosavian
  • Alexandru Luca
Original Paper


The objective of this study was to investigate the possibility of using ultrasound-assisted osmotic dehydration (UAOD) as a pretreatment prior to frying and to study its effects on the quality of fried potatoes. The quality parameters, moisture content, oil uptake, color, texture, and microstructure of fried potatoes, were chosen. Quality of fried potatoes treated with UAOD was also compared with the ones treated with osmotic dehydration (OD). Potato slabs (40 × 40 × 7 mm) were pretreated with different osmotic solutions (15 % sodium chloride and 15 % sodium chloride/50 % sucrose solutions) at different temperatures (25, 45, and 65 °C) with and without ultrasonic waves for different treatment times. The pretreatment conditions which are OD for 90 min and UAOD for 30 min using 15 % sodium chloride/50 % sucrose solution were applied prior to frying at 170 °C for 2, 4, and 6 min. UAOD reduced the oil content of fried potatoes by 12.5 % (db) as compared to untreated fried potatoes at the end of frying. There was no significant difference between OD and UAOD in reduction of oil uptake in fried potatoes. However, UAOD was found to have the advantage of improving the color of French fries. In addition, it shortened the pretreatment time of OD by about 67 %. Cell structure of fried potato was damaged in the presence of pretreatments of OD and UAOD.


Frying Osmotic dehydration Potato Ultrasound 



All the support by the Middle East Technical University and Iran Ministry of Science and Technology is acknowledged and much appreciated.


  1. Aguilera, J. M., Cadoche, L., López, C., & Gutierrez, G. (2001). Microstructural changes of potato cells and starch granules heated in oil. Food Research International, 34(10), 939–947.CrossRefGoogle Scholar
  2. Akdeniz, N., Sahin, S., & Sumnu, G. (2006). Functionality of batters containing different gums for deep-fat frying of carrot slices. Journal of Food Engineering, 75(4), 522–526.CrossRefGoogle Scholar
  3. Allali, H., Marchal, L., & Vorobiev, E. (2010). Effects of vacuum impregnation and ohmic heating with citric acid on the behaviour of osmotic dehydration and structural changes of apple fruit. Biosystems Engineering, 106(1), 6–13.CrossRefGoogle Scholar
  4. AOAC. (2000). Official methods of analysis. Washington,DC: Association of Official Analytical Chemists.Google Scholar
  5. Azoubel, P. M., Baima, M. A. M., Amorim, M. R., & Oliveira, S. S. B. (2010). Effect of ultrasound on banana cv Pacovan drying kinetics. Journal of Food Engineering, 97(2), 194–198.CrossRefGoogle Scholar
  6. Barutcu, I., Sahin, S., & Sumnu, G. (2009). Effects of microwave frying and different flour types addition on the microstructure of batter coatings. Journal of Food Engineering, 95(4), 684–692.CrossRefGoogle Scholar
  7. Bingol, G., Zhang, A., Pan, Z., & McHugh, T. H. (2012). Producing lower-calorie deep fat fried French fries using infrared dry-blanching as pretreatment. Food Chemistry, 132(2), 686–692.CrossRefGoogle Scholar
  8. Buettner, R., Schölmerich, J., & Bollheimer, C. (2007). High-fat diets: modelling the metabolic disorders of human obesity in rodents. Obesity (Silver Spring), 15, 798–808.CrossRefGoogle Scholar
  9. Bunger, A., Moyano, P., & Rioseco, V. (2003). NaCl soaking treatment for improving the quality of French-fried potatoes. Food Research International, 36(2), 161–166.CrossRefGoogle Scholar
  10. De La Fuente-Blanco, S., De Sarabia Riera-Franco, E., Acosta-Aparicio, V. M., Blanco-Blanco, A., & Gallego-Juárez, J. A. (2006). Food drying process by power ultrasound. Ultrasonics, 44(Supplement (1)), E523–E527.CrossRefGoogle Scholar
  11. Deng, Y., & Zhao, Y. (2008). Effects of pulsed-vacuum and ultrasound on the osmotic dehydration kinetics and microstructure of apples (Fuji). Journal of Food Engineering, 85(1), 84–93.CrossRefGoogle Scholar
  12. Dueik, V., Robert, P., & Bouchon, P. (2010). Vacuum frying reduces oil uptake and improves the quality parameters of carrot crisps. Food Chemistry, 119(3), 1143–1149.CrossRefGoogle Scholar
  13. Durán, M., Pedreschi, F., Moyano, P., & Troncoso, E. (2007). Oil partition in pre-treated potato slices during frying and cooling. Journal of Food Engineering, 81(1), 257–265.CrossRefGoogle Scholar
  14. Eren, I., & Kaymak-Ertekin, F. (2007). Optimization of osmotic dehydration of potato using response surface methodology. Journal of Food Engineering, 79(1), 344–352.CrossRefGoogle Scholar
  15. Fernandes, F. A. N., Gallão, M. I., & Rodrigues, S. (2008). Effect of osmotic dehydration and ultrasound pre-treatment on cell structure: melon dehydration. LWT- Food Science and Technology, 41(4), 604–610.CrossRefGoogle Scholar
  16. Fernandes, F. A. N., Gallão, M. I., & Rodrigues, S. (2009). Effect of osmosis and ultrasound on pineapple cell tissue structure during dehydration. Journal of Food Engineering, 90(2), 186–190.CrossRefGoogle Scholar
  17. Fernandes, F. A. N., Rodrigues, S., Law, C. L., & Mujumdar, A. S. (2011). Drying of exotic tropical fruits: a comprehensive review. Food and Bioprocess Technology, 4(2), 163–185.CrossRefGoogle Scholar
  18. Garayo, J., & Moreira, R. (2002). Vacuum frying of potato chips. Journal of Food Engineering, 55, 181–191.CrossRefGoogle Scholar
  19. Garcia, M. A., Ferrero, C., Bertola, N., Martino, M., & Zaritzky, N. (2002). Methylcellulose coatings applied to reduce oil uptake in fried products. Food Science and Technology International, 10, 339–346.CrossRefGoogle Scholar
  20. Garcia-Noguera, J., Oliveira, F. I. P., Gallão, M. I., Weller, C. L., Rodrigues, S., & Fernandes, F. A. N. (2010). Ultrasound-Assisted osmotic dehydration of strawberries: effect of pretreatment time and ultrasonic frequency. Drying Technology, 28(2), 294–303.CrossRefGoogle Scholar
  21. Genina-Soto, P., Barrera-Cortes, J., Gutierrez-Lopez, G., & Nieto, E. A. (2001). Temperature and concentration effects of osmotic media on OD profiles of sweet potato cubes. Drying Technology, 19(3–4), 547–558.CrossRefGoogle Scholar
  22. Gupta, P., Shivhare, U. S., & Bawa, A. S. (2000). Studies on frying kinetics and quality of French fries. Drying Technology, 18(1–2), 311–321.CrossRefGoogle Scholar
  23. Ikoko, J., & Kuri, V. (2007). Osmotic pre-treatment effect on fat intake reduction and eating quality of deep-fried plantain. Food Chemistry, 102(2), 523–531.CrossRefGoogle Scholar
  24. Khalil, A. H. (1999). Quality of French fried potatoes as influenced by coating with hydrocolloids. Food Chemistry, 66, 2012–2208.CrossRefGoogle Scholar
  25. Krokida, M. K., Oreopoulou, V., Maroulis, Z. B., & Marinos-Kouris, D. (2001a). Effect of pre-drying on quality of French fries. Journal of Food Engineering, 49, 347–354.CrossRefGoogle Scholar
  26. Krokida, M. K., Oreopoulou, V., Maroulis, Z. B., & Marinos-Kouris, D. (2001b). Effect of osmotic dehydration pretreatment on quality of French fries. Journal of Food Engineering, 49(4), 339–345.CrossRefGoogle Scholar
  27. Lazarides, H. N., Katsanidis, E., & Nickolaidis, A. (1995). Mass transfer kinetics during osmotic preconcentration aiming at minimal solid uptake. Journal of Food Engineering, 25(2), 151–166.CrossRefGoogle Scholar
  28. Li, H., Zhao, C., Guo, Y., An, K., Ding, S., & Wang, Z. (2012). Mass transfer evaluation of ultrasonic osmotic dehydration of cherry tomatoes in sucrose and salt solutions. International Journal of Food Science and Technology, 47(5), 954–960.CrossRefGoogle Scholar
  29. Lisińska, G., & Gołubowska, G. (2005). Structural changes of potato tissue during French fries production. Food Chemistry, 93(4), 681–687.CrossRefGoogle Scholar
  30. Mai Tran, T. T., Chen, X. D., & Southern, C. (2007). Reducing oil content of fried potato crisps considerably using a ‘sweet’ pre-treatment technique. Journal of Food Engineering, 80(2), 719–726.CrossRefGoogle Scholar
  31. Moreira, R., Chenlo, F., Torres, M. D., & Vázquez, G. (2007). Effect of stirring in the osmotic dehydration of chestnut using glycerol solutions. LWT- Food Science and Technology, 40(9), 1507–1514.CrossRefGoogle Scholar
  32. Moreno, M. C., & Bouchon, P. (2008). A different perspective to study the effect of freeze, air, and osmotic drying in oil absorption during potato frying. Journal of Food Science, 73, E122–E128.CrossRefGoogle Scholar
  33. Moyano, P. C., & Pedreschi, F. (2006). Kinetics of oil uptake during frying of potato slices: effect of pre-treatments. LWT- Food Science and Technology, 39(3), 285–291.CrossRefGoogle Scholar
  34. Mujumdar, A. S., & Law, C. L. (2010). Drying technology: trends and applications in postharvest processing. Food and Bioprocess Technology, 3(6), 843–852.CrossRefGoogle Scholar
  35. Ngadi, M. O., Wang, Y., Adedeji, A. A., & Raghavan, G. S. V. (2009). Effect of microwave pretreatment on mass transfer during deep-fat frying of chicken nugget. LWT- Food Science and Technology, 42(1), 438–440.CrossRefGoogle Scholar
  36. Oztop, M. H., Sahin, S., & Sumnu, G. (2007). Optimization of microwave frying of osmotically dehydrated potato slices by using response surface methodology. European Food Research and Technology, 224, 701–713.CrossRefGoogle Scholar
  37. Pedreschi, F., & Moyano, P. (2005). Oil uptake and texture development in fried potato slices. Journal of Food Engineering, 70(4), 557–563.CrossRefGoogle Scholar
  38. Ravindra, M. R., & Chattopadhyay, P. K. (2000). Optimisation of osmotic preconcentration and fluidised bed drying to produce dehydrated quick-cooking potato cubes. Journal of Food Engineering, 44(1), 5–11.CrossRefGoogle Scholar
  39. Rimac-Brnčić, S., Lelas, V., Rade, D., & Šimundić, B. (2004). Decreasing of oil absorption in potato strips during deep fat frying. Journal of Food Engineering, 64(2), 237–241.CrossRefGoogle Scholar
  40. Rodrigues, S., Gomes, M. C. F., Gallão, M. I., & Fernandes, F. A. N. (2009). Effect of ultrasound-assisted osmotic dehydration on cell structure of sapotas. Journal of the Science of Food and Agriculture, 89(4), 665–670.CrossRefGoogle Scholar
  41. Saguy, S., & Dana, D. (2003). Integrated approach to deep fat frying: Engineering, nutrition, health and consumer aspects. Journal of Food Engineering, 56, 143–152.CrossRefGoogle Scholar
  42. SAS/INSIGHT user’s guide, version 9.1., 2004. Cary, NC, USA: SAS Institute Inc.Google Scholar
  43. Sereno, A. M., Moreira, R., & Martinez, E. (2001). Mass transfer coefficients during osmotic dehydration of apple in single and combined aqueous solutions of sugar and salt. Journal of Food Engineering, 47(1), 43–49.CrossRefGoogle Scholar
  44. Shamaei, S., Emam-Djomeh, Z., & Moini, S. (2012). Ultrasound-assisted osmotic dehydration of cranberries: effect of finish drying methods and ultrasonic frequency on textural properties. Journal of Texture Studies, 43(2), 133–141.CrossRefGoogle Scholar
  45. Tran, T. T. M., Chen, X., & Southern, C. (2007). Reducing oil content of fried potato crisp considerably using a “sweet” pretreatment technique. Journal of Food Engineering, 80, 719–726.CrossRefGoogle Scholar
  46. Wadhwani, R., & McMahon, D. J. (2012). Color of low-fat cheese influences flavor perception and consumer liking. Journal of Dairy Science, 95(5), 2336–2346.CrossRefGoogle Scholar
  47. Zhu, J., Li, L., Chen, L., & Li, X. (2012). Study on supramolecular structural changes of ultrasonic treated potato starch granules. Food Hydrocolloids, 29(1), 116–122.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2012

Authors and Affiliations

  • Vahid Mohammadpour Karizaki
    • 1
  • Serpil Sahin
    • 2
    Email author
  • Gulum Sumnu
    • 2
  • Mohammad Taghi Hamed Mosavian
    • 1
  • Alexandru Luca
    • 2
  1. 1.Department of Chemical Engineering, Faculty of EngineeringFerdowsi University of MashhadMashhadIran
  2. 2.Department of Food EngineeringMiddle East Technical UniversityAnkaraTurkey

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