Application of nondestructive impedance spectroscopy to determination of the effect of temperature on potato microstructure and texture

The objective of this study was to use impedance spectroscopy to evaluate microstructural changes in potato tissue caused by heat treatments. Potato samples were subjected to 30 min treatments at room temperature, 30, 40, 50, 60 and 70 C. Changes in microstructure were evaluated by texture, electrolyte leakage and color measurements, and confocal laser scanning microscopy (CLSM). Samples processed at 60 and 70 C showed significantly different module of impedance and phase values than those processed at 650 C. Texture decreased and electrolyte leakage increased after treating potato at temperatures above 60 C, indicating loss of turgor pressure and rupture of both membranes and cell walls. Significant changes in tissue microstructure and progressive cell wall degradation as temperature increased were visualized using CLSM. Real-time nondestructive impedance spectroscopy proved to be a quantitative means of following the effects of process temperature on potato cell walls and starch, and subsequently on textural properties.

[1]  D. Barrett,et al.  Thermal, High Pressure, and Electric Field Processing Effects on Plant Cell Membrane Integrity and Relevance to Fruit and Vegetable Quality , 2010, Journal of food science.

[2]  P. García-Segovia,et al.  Textural properties of potatoes (Solanum tuberosum L., cv. Monalisa) as affected by different cooking processes , 2008 .

[3]  Yukiharu Ogawa,et al.  Electrical impedance spectroscopy analysis of eggplant pulp and effects of drying and freezing–thawing treatments on its impedance characteristics , 2008 .

[4]  D. Barrett,et al.  Influence of cell integrity on textural properties of raw, high pressure, and thermally processed onions. , 2010, Journal of food science.

[5]  Yongkang Luo,et al.  Study on the electric conduction properties of fresh and frozen–thawed grass carp (Ctenopharyngodon idellus) and tilapia(Oreochromis niloticus) , 2010 .

[6]  Hyun-Jung Chung,et al.  Advanced Analytical Techniques to Evaluate the Quality of Potato and Potato Starch , 2009 .

[7]  F. Roger Harker,et al.  The use of electrical impedance spectroscopy to assess the physiological condition of kiwifruit , 2000 .

[8]  M. Álvarez,et al.  Rheological characterization of fresh and cooked potato tissues (cv. Monalisa) , 1998 .

[9]  F. Roger Harker,et al.  Ripening and development of chilling injury in persimmon fruit: An electrical impedance study , 1997 .

[10]  D. Barrett,et al.  Kinetic parameters for the thermal inactivation of quality-related enzymes in carrots and potatoes. , 2002, Journal of agricultural and food chemistry.

[11]  M. Bourne.  Food Texture and Viscosity: Concept and Measurement , 2002 .

[12]  M. Álvarez,et al.  Kinetics of thermal softening of potato tissue (cv. Monalisa) by water heating , 2001 .

[13]  K. Duangmal,et al.  A comparative study of polyphenoloxidases from taro (Colocasia esculenta) and potato (Solanum tuberosum var. Romano , 1999 .

[14]  J. V. D. Silva,et al.  Electrolyte and Pi Leakages and Soluble Sugar Content as Physiological Tests for Screening Resistance to Water Stress in Phaseolus and Vigna Species , 1990 .

[15]  F. V. D. Velde,et al.  Visualisation of starch granule morphologies using confocal scanning laser microscopy (CSLM) , 2002 .

[16]  L. Kaur,et al.  Some properties of potatoes and their starches I. Cooking, textural and rheological properties of potatoes , 2002 .

[17]  Aleksei M. Zheltikov,et al.  Impedance Spectroscopy: Theory, Experiment, and Applications Second Edition. Evgenij Barsoukov and J. Ross Macdonald (eds). John Wiley & Sons, Inc., Hoboken, New Jersey, 2005, pp. 595 , 2007 .

[18]  B. E. Proctor,et al.  THE COMPARATIVE EFFECT OF IONIZING RADIATIONS AND HEAT UPON THE STARCH CONTAINING CELLS OF THE POTATO TUBERa , 1955 .

[19]  Jing Liu,et al.  Using electrical impedance detection to evaluate the viability of biomaterials subject to freezing or thermal injury , 2004, Analytical and bioanalytical chemistry.

[20]  M. Friedman,et al.  Chemistry, Biochemistry, and Dietary Role of Potato Polyphenols. A Review , 1997 .

[21]  G. Lisin´ska,et al.  Potato science and technology. , 1989 .

[22]  M. Saltveit.  The rate of ion leakage from chilling-sensitive tissue does not immediately increase upon exposure to chilling temperatures , 2002 .

[23]  M. Jarvis,et al.  The textural analysis of cooked potato. 2. Swelling pressure of starch during gelatinisation , 1992, Potato Research.

[24]  Mohd Rizal Arshad,et al.  Assessment of quality of fruits using impedance spectroscopy , 2011 .

[25]  B. Nicolai,et al.  The starch gelatinization in potatoes during cooking in relation to the modelling of texture kinetics , 1995 .

[26]  J. Cape,et al.  Quantification of frost damage in plant tissues by rates of electrolyte leakage. , 1989, The New phytologist.

[27]  Joseph Arul,et al.  Phase transition in potato starch–water system I. Starch gelatinization at high moisture level , 2002 .

[28]  José M. Barat,et al.  Detection of frozen-thawed salmon (Salmo salar) by a rapid low-cost method , 2012 .

[29]  L. Kaur,et al.  Parenchyma cell microstructure and textural characteristics of raw and cooked potatoes , 2012 .

[30]  Yoko Shimiya,et al.  Effect of Freezing on Electrical and Rheological Properties of Food Materials , 2004 .

[31]  Petr Dejmek,et al.  Relationship between the Electrical and Rheological Properties of Potato Tuber Tissue after Various Forms of Processing , 2002, Bioscience, biotechnology, and biochemistry.

[32]  C. Bishop,et al.  Effects of hot water treatments and storage temperatures on the ripening and the use of electrical impedance as an index for assessing post‐harvest changes in mango fruits , 2001 .

[33]  R. Martínez‐Máñez,et al.  Design of a low-cost non-destructive system for punctual measurements of salt levels in food products using impedance spectroscopy , 2010 .

[34]  Toru Suzuki,et al.  Measurement of electrical conductivity, differential scanning calorimetry and viscosity of starch and flour suspensions during gelatinisation process , 2001 .

[35]  A. Yemenicioğlu.  Control of polyphenol oxidase in whole potatoes by low temperature blanching , 2002 .

[36]  John R. Mitchell,et al.  Food Texture and Viscosity: Concept and Measurement , 2003 .

[37]  H. Kaiser.  The Application of Electronic Computers to Factor Analysis , 1960 .

[38]  Y. Takeda,et al.  Physicochemical properties and amylopectin structures of large, small, and extremely small potato starch granules , 2005 .

[39]  M. Scanlon,et al.  The effect of tuber pre-heating temperature and storage time on the mechanical properties of potatoes , 2001 .

[40]  Abdul Ahad,et al.  The different fates of mitochondria and chloroplasts during dark-induced senescence in Arabidopsis leaves. , 2007, Plant, cell & environment.

[41]  E. Barsoukov,et al.  Impedance spectroscopy : theory, experiment, and applications , 2005 .

[42]  M. A. Rao,et al.  Impact of temperature and cellulase treatments on rheological behavior of potato tuber cell suspensions , 1993 .

[43]  José M. Barat,et al.  Differentiation between fresh and frozen-thawed sea bream (Sparus aurata) using impedance spectroscopy techniques , 2013 .

[44]  M. Gidley,et al.  The influence of starch swelling on the material properties of cooked potatoes , 2002 .