In this study, the apparent viscosity of a skim milk based dessert was optimized through the use of a 5-level Central Composite Design. The effect of carrageenan, guar gum, sucrose and pH on the dessert's apparent viscosity was esti-mated. The dessert's flow behavior was also analyzed. A rotational viscometer was used for the the apparent viscosity measurements. All formulations presented a non-Newtonian, shear-thinning behavior. Except for carrageenan concentration, all of the design factors affected apparent viscosity, being the effects better described by second order polynomial models. The following combinations of the variable ingredients yielded the best apparent viscosity: guar gum concentration: 0.0-0.315% (w/w) and sucrose concentration: 5.000-8.615% (w/w); or guar gum concentration: 0.109-0.315% (w/w) and sucrose concentration: 5.000-11.000% (w/w); in both cases, carrageenan and pH were kept at 0.020% (w/w) and 6.50, respectively.
KeywordsViscosityMilkGuarCarrageenanDairy Dessert
F. B. Hu, J. E. Manson and W. C. Willett, “Types of Dietary Fat and Risk of Coronary Heart Disease: A Critical Review,” Journal of the American College of Nutrition, Vol. 20, No. 1, 2001, pp. 5-19.
World Cancer Research Fund/American Institute for Cancer Research, “Food, Nutrition, Physical Activity, and the Prevention of Cancer: A Global Perspective,” AICR, 2007.
E. A. Prindiville, R. T. Marshall and H. Heymann, “Effect of Milk Fat on the Sensory Properties of Chocolate Ice Cream,” Journal of Dairy Science, Vol. 82, No. 7, 1999, pp. 1425-1432. doi:10.3168/jds.S0022-0302(99)75369-5
M. Ker?ien?, A. Adams, A. Dubra, N. de Kimpe and D. Leskauskait?, “Interactions between Flavour Release and Rheological Properties in Model Custard Desserts: Effect of Starch Concentration and Milk Fat,” Food Chemistry, Vol. 108, 2008, pp. 1183-1191. doi:10.1016/j.foodchem.2007.11.011
M. Martuscelli, G. Savary, P. Pittia and N. Cayot, “Vapour Partition of Aroma Compounds in Strawberry Flavored Custard Cream and Effect of Fat Content,” Food Chemistry, Vol. 108, No. 4, 2008, pp. 1200-1207. doi:10.1016/j.foodchem.2007.05.083
J. U. McGregor and C. H. White, “Optimizing Ultrafiltration Parameters for the Development of a Lowfat Cheddar Cheese,” Journal of Dairy Science, Vol. 73, No. 2, 1990, pp. 314-318. doi:10.3168/jds.S0022-0302(90)78675-4
W. L. Kerr, X. Wang and S. G. Choi, “Physical and Sensory Characteristics of Low-Fat Italian Sausage Prepared with Hydrated Oat,” Journal of Food Quality, Vol. 28, No. 1, 2005, pp. 62-77. doi:10.1111/j.1745-4557.2005.00010.x
F. R. Reis, M. L. Masson and N. Waszczynskyj, “Influence of a Blanching Pretreatment on Color, Oil Uptake and Water Activity of Potato Sticks, and Its Optimization,” Journal of Food Process Engineering, Vol. 31, No. 6, 2008, pp. 833-852. doi:10.1111/j.1745-4530.2007.00193.x
G. A. El-Garawany and M. H. Abd el Salam, “Preparation and Rheological Properties of a Dairy Dessert Based on Whey Protein/Potato Starch,” Food Chemistry, Vol. 91, No. 3, 2005, pp. 261-267. doi:10.1016/j.foodchem.2004.01.073
A.-M. Seuvre, C. Turci and A. Voilley, “Effect of the Temperature on the Release of Aroma Compounds and on the Rheological Behaviour of Model Dairy Custard,” Food Chemistry, Vol. 108, No. 4, 2008, pp. 1176-1182. doi:10.1016/j.foodchem.2007.04.031
A. Tárrega and E. Costell, “Effect of Composition on the Rheological Behaviour and Sensory Properties of Semisolid Dairy Dessert,” Food Hydrocolloids, Vol. 20, No. 6, 2006, pp. 914-922.
R. A. de Wijk, M. E. J. Terpstra, A .M. Janssen and J. F. Prinz, “Perceived Creaminess of Semi-solid Foods,” Trends in Food Science and Technology, Vol. 17, No. 8, 2006, pp. 412-422. doi:10.1016/j.tifs.2006.02.005
N. Daget, M. Joerg and M. Bourne, “Creamy Perception I: in Model Dessert Creams,” Journal of Texture Studies, Vol. 18, No. 4, 1987, pp. 367-388. doi:10.1111/j.1745-4603.1987.tb00913.x
R. A. de WIJK, J. F. Prinz and A. M. Janssen, “Explaining Perceived Oral Texture of Starch-based Custard Desserts from Standard and Novel Instrumental Tests,” Food Hydrocolloids, Vol. 20, No. 1, 2006, pp. 24-34.
M. Akhtar, J. Stenzel, B. S. Murray and E. Dickinson, “Factors Affecting the Perception of Creaminess of Oil- in-water Emulsions,” Food Hydrocolloids, Vol. 19, 2005, pp. 521-526. doi:10.1016/j.foodhyd.2004.10.017
R. H. Jellema, A. M. Janssen, M. E. J. Terpstra, R. A. de Wijk and A. K. Smilde, “Relating the Sensory Sensation ‘Creamy Mouthfeel’ in Custards to Rheological Measurements,” Journal of Chemometrics, Vol. 19, No. 3, 2005, pp. 191-200. doi:10.1002/cem.922
P. Mitschka, “Simple Conversion of Brookfield R.V.T. Readings into Viscosity Functions,” Rheologica Acta, Vol. 21, No. 2, 1982, pp. 207-209. doi:10.1007/BF01736420
NIST/SEMATECH, “What are the objectives”, 2003. Internet Available: http://www.itl.nist.gov/div898/handbook/pri/section3/pri31.htm.
P. H. L. Nikaedo, F. F. Amaral and A. L. B. Penna, “Technological Characterization of Creamy Chocolate Dairy Desserts Prepared with Whey Protein Concentrate and a Mixture of Carrageenan and Guar Gum,” Brazilian Journal of Pharmaceutical Sciences, Vol. 40, 2004, pp. 397-404.
R. A. de Wijk, J. F. Prinz, L. Engelen and H. Weenen, “The Role of Alfa-amylase in Oral Texture Perception,” Physiology & Behavior, Vol. 83, 2004, pp. 81-91.
C. M. Dea, and A. Morrison, “Chemistry and Interaction of Seed Galactomannans,” Advances in Carbohydrate Chemistry and Biochemistry, Vol. 31, 1975, pp. 241-312. doi:10.1016/S0065-2318(08)60298-X
F. Depypere, D. Verbeken, J. D. Torres and K. Dewettinck, “Rheological Properties of Dairy Desserts Prepared in an Indirect UHT Pilot Plant,” Journal of Food Engineering, Vol. 91, No. 1, 2009, pp. 140-145. doi:10.1016/j.jfoodeng.2008.08.017
N. Bemiller and R. L. Whistler, “Carbohydrates,” In: O. R. Fennema, Ed., Food Chemistry, Marcel Dekker, New York, 1996, pp. 157-225.
H. Weenen, R. H. Jellema and R. A. de Wijk, “Sensory Sub-attributes of Creamy Mouthfeel in Commercial May- onnaises, Custard Desserts and Sauces,” Food Quality and Preference, Vol. 16, 2005, pp. 163-170. doi:10.1016/j.foodqual.2004.04.008
J. F. Steffe, “Rheological Methods in Food Process Engineering,” Freeman Press, 1996.
S. Mleko and W. Gustaw, “Rheological Changes due to Substitution of Total Milk Proteins by Whey Proteins in Dairy Desserts,” Journal of Food Science and Technology-Mysore, Vol. 39, 2002, pp. 170-172.
A. Tárrega and E. Costell, “Colour and Consistency of Semi- solid Dairy Desserts: Instrumental and Sensory Measurements,” Journal Food Engineering, Vol. 78, No. 2, 2007, pp. 655-661.
V. Sudhakar, R. S. Singhal and P. R. Kulkarni, “Starch- Galactomannan Interactions: Functionality and Rheological Aspects,” Food Chemistry, Vol. 55, No. 3, 1996, pp. 259-264. doi:10.1016/0308-8146(95)00127-1
G. Ravindran and L. Matia-Merino, “Starch-Fenugreek (Trigonella foenum-graecum L.) Polysaccharide Interactions in Pure and Soup Systems,” Food Hydrocolloids, Vol. 23, No. 3, 2009, pp. 1047-1053. doi:10.1016/j.foodhyd.2008.08.010
M. O. Eleya and S. L. Turgeon, “The Effects of pH on the Rheology of β-Lactoglobulin/κ-Carrageenan Mixed Gels,” Food Hydrocolloids, Vol. 14, No. 3, 2000, pp. 245-251. doi:10.1016/S0268-005X(99)00055-7