Abstract
In order to adapt the seasonal production of donkey milk to constant market demand, this study was aimed to define the project parameters of a pilot spray dryer for producing soluble milk powder from donkey milk concentrate. The concentrate (23% mean dry matter (wb)) was spray-dried using three different inlet air temperatures (120–150–185 °C). Both cow and goat milk were used as reference in the trials, and ascorbic acid was used as a chemical marker to evaluate thermal damage to the powder. The thermal damage index (IDT) and insolubility index (IINS) were used to assess the quality of the powders produced. Prediction models were developed for each kind of milk to correlate spray-drying operating temperatures to the IINS and IDT. The results of experimental trials were used to determine optimal processing temperatures (both inlet and outlet air temperature) in order to obtain an “extra-grade” milk powder from donkey milk concentrate (the maximum allowed inlet air temperature that resulted was 173.5 °C).
References
AOAC (2002) Official methods of analysis. Association of Official Analytical Chemists.
Birchal VS, Passos ML, Wildhagen GRS, Mujumdar AS (2004) The influence of spray dryer operation variables on milk powder quality. In: Proceedings of the 14th International Drying Symposium (IDS 2004), vol. A, São Paulo, Brazil, pp 389–396.
Chen XD, Lin SXQ (2005) Air drying of milk droplet under constant and time-dependent conditions. AICHE J 51(6):1790–1799
Daemen ALH (1981) The destruction of enzymes and bacteria during the spray-drying of milk and whey. 1. The thermoresistance of some enzymes and bacteria in milk and whey. Neth Milk Dairy J 35:133–145
De Ritter E (1976) Stability characteristics of vitamins in processed foods. Food Technol 30(1):48–51, 54
Doreau M, Boulot S (1989) Recent knowledge on mare milk production: a review. Livest Prod Sci 22(3–4):213–235. doi:10.1016/0301-6226(89)90057-2
Hill DJ, Hosking CS (1996) Cow milk allergy in infancy and early childhood. Clin Exp Allergy 26(3):243–246
Hochberg Y (1988) A sharper Bonferroni procedure for multiple tests of significance. Biometrika 75(4):800–802
Hommel G (1988) A stagewise rejective multiple test procedure on a modified Bonferroni test. Biometrika 75(2):383–386
Hommel G (1989) A comparison of two modified Bonferroni procedures. Biometrika 76(3):624–625
Iacono G, Carroccio A, Cavataio F, Montalto G, Soresi M, Balsamo V (1992) Use of ass’ milk in multiple food allergy. J Pediatr Gastroenterol Nutr 14(2):177–181
International Dairy Federation (2005) IDF Standard 129A. Dried milk and dried milk products. Determination of insolubility index. International Dairy Federation, Brussels
Indyk H, Littlejohn V, Woollard DC (1996) Stability of vitamin D3 during spray-drying of milk. Food Chem 57(2):283–286. doi:10.1016/0308-8146(95)00225-1
Koroleff F (1983) Simultaneous oxidation of nitrogen and phosphorus compounds by persulfate. In: Grasshoff K, Eberhardt M, Kremling K (eds) Methods of seawater analysis, 2nd edn. Verlag Chemie, Weinheimer, pp 168–169
Marshall WR (1954) Atomization and spray drying. Chemical engineering progress monograph series, vol. 50, no. 2. American Institute of Chemical Engineers, New York.
Monti G, Bertino E, Muratore MC, Coscia A, Cresi F, Silvestro L, Fabris C, Fortunato D, Giuffrida MG, Conti A (2007) Efficacy of donkey’s milk in treating highly problematic cow’s milk allergic children: an in vivo and in vitro study. Pediatr Allergy Immunol 18(3):258–264. doi:10.1111/j.1399-3038.2007.00521.x
Oakley DE (2004) Spray dryer modeling in theory and practice. Drying Technol 22(6):1371–1402. doi:10.1081/DRT-120038734
Pérez-Correa JR, Farías F (1995) Modelling and control of a spray dryer: a simulation study. Food Control 6(4):219–227. doi:10.1016/0956-7135(95)00009-G
Piatkowski M, Zbicinski I (2007) Analysis of the mechanism of counter-current spray drying. Transp Porous Med 66(1–2):89–101. doi:10.1007/s11242-006-9024-0
Picard RR, Cook RD (1984) Cross-validation of regression models. J Am Statist Assoc 79(387):575–583. doi:10.1080/01621459.1984.10478083
Rysstad G, Kolstad J (2006) Extended shelf life milk—advances in technology. Int J Dairy Technol 59(2):85–96
Salimei E, Fantuz F, Coppola R, Chiofalo B, Polidori P, Varisco G (2004) Composition and characteristics of ass’s milk. Anim Res 53(1):67–78
Schuck P (2002) Spray drying of dairy products: state of the art. Lait 82(4):375–382
Straatsma J, Van Houwelingen G, Steenbergen AE, De Jong P (1999a) Spray drying of food products: 1. Simulation model. J Food Eng 42(2):67–72. doi:10.1016/S0260-8774(99)00107-7
Straatsma J, van Houwelingen G, Steenbergen AE, De Jong P (1999b) Spray drying of food products: 2. Prediction of insolubility index. J Food Eng 42(2):73–77. doi:10.1016/S0260-8774(99)00108-9
Verdurmen REM, Straatsma H, Verschueren M, van Haren JJ, Smit E, Bargeman G, De Jong P (2002) Modelling spray drying processes for dairy products. Lait 82(4):453–463
Verdurmen REM, Verschueren M, Gunsing M, Straatsma H, Blei S, Sommerfeld M (2005) Simulation of agglomeration in spray dryers: the EDECAD project. Lait 85(4–5):343–351
Wijlhuizen AE, Kerkhof PJAM, Bruin S (1979) Theoretical study of the inactivation of phosphatase during spray drying of skim-milk. Chem Eng Sci 34(5):651–660. doi:10.1016/0009-2509(79)85110-6
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Di Renzo, G.C., Altieri, G. & Genovese, F. Donkey milk powder production and properties compared to other milk powders. Dairy Sci. & Technol. 93, 551–564 (2013). https://doi.org/10.1007/s13594-013-0108-7
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DOI: https://doi.org/10.1007/s13594-013-0108-7