Optimum thermal processing for extended shelf-life (Esl) milk

Foods

Volumn 6, Issue 11, 2017, Pages

  Deeth, Hilton ^a  

^a UNIVERSITY OF QUEENSLAND   (Australia)

Author keywords

B* value; ESL milk; Extended shelf life; Psychrotrophic spore formers; lactoglobulin denaturation

Indexed keywords

EID: 85074365834     PISSN: None     EISSN: 23048158     Source Type: Journal    
DOI: 10.3390/foods6110102     Document Type: Review

References (112)

1. Rysstad, G.; Kolstad, J. Conference contribution: Extended shelf life milk-advances in technology. Int. J. Dairy Technol. 2006, 59, 85–96. [CrossRef]
2. Schmidt, V.S.J.; Kaufmann, V.; Kulozik, U.; Scherer, S.; Wenning, M. Microbial biodiversity, quality and shelf life of microfiltered and pasteurized extended shelf life (ESL) milk from Germany, Austria and Switzerland. Int. J. Food Microbiol. 2012, 154, 1–9. [CrossRef] [PubMed]
3. Khoza, S. Effect of Extended Shelf Life Milk Processing on the Bacterial Composition Associated with the Nozzles of Filling Machines. Master’s Thesis, University of Pretoria, Pretoria, South Africa, 2015.
4. Deeth, H.C.; Lewis, M.J. High Temperature Processing of Milk and Milk Products; Wiley Blackwell: Oxford, UK, 2017; ISBN 978-1-118-46050-4.
5. Burton, H. Ultra High Temperature Processing of Milk and Milk Products; Elsevier Applied Science Publishers: New York, NY, USA, 1988.
6. Lewis, M.; Heppell, N. Continuous Thermal Processing of Foods: Pasteurization and UHT Sterilization; Aspen Publishers: Gaithersburg, MD, USA, 2000; ISBN 0-8342-1259-5.
7. Datta, N.; Elliott, A.J.; Perkins, M.L.; Deeth, H.C. Ultra-high-temperature (UHT) treatment of milk: Comparison of direct and indirect modes of heating. Aust. J. Dairy Technol. 2002, 57, 211–227.
8. Fredsted, L.B.; Rysstad, G.; Eie, T. Pure-Lac™: The new milk with protected freshness and extended shelf life. In Heat Treatments and Alternative Methods; International Dairy Federation: Brussels, Belgium, 1996; Volume 9602, pp. 104–125; ISBN 92 9098 023 6.
9. APV (SPX). Dairy Technology; SPX Corporation: Silkeborg, Denmark, 2008.
10. Huijs, G.; van Asselt, A.; Verdurmen, R.; de Jong, P. High speed milk. Dairy Ind. Int. 2004, 69, 30–32.
11. De Jong, P. Thermal processing of milk. In Advanced Dairy Science and Technology; Britz, T.J., Robinson, R.K., Eds.; Blackwell Publishers Ltd.: Oxford, UK, 2008; pp. 1–34; ISBN 978-1-4051-3618-1.
12. Van Asselt, A.J.; Sweere, A.P.J.; Rollema, H.S.; de Jong, P. Extreme high-temperature treatment of milk with respect to plasmin inactivation. Int. Dairy J. 2008, 18, 531–538. [CrossRef]
13. Arofikin, N.V. Liquid Product Pressure Treatment Method and Device. U.S. Patent 7,708,941, 4 May 2010.
14. Myer, P.R.; Parker, K.R.; Kanach, A.T.; Zhu, T.; Morgan, M.T.; Applegate, B.M. The effect of a novel low temperature-short time (LTST) process to extend the shelf-life of fluid milk. SpringerPlus 2016, 5, 660. [CrossRef] [PubMed]
15. Noma, S.; Shimoda, M.; Hayakawa, I. Inactivation of vegetative bacteria by rapid decompression treatment. J. Food Sci. 2002, 67, 3408–3411. [CrossRef]
16. Hayakawa, I.; Furukawa, S.; Midzunaga, A.; Horiuchi, H.; Nakashima, T.; Fujio, Y.; Yano, Y.; Ishikura, T.; Sasaki, K. Mechanism of inactivation of heat-tolerant spores of Bacillus stearothermophilus IFO 12550 by rapid decompression. J. Food Sci. 1998, 63, 371–374. [CrossRef]
17. ◦ C, 5 s) German ESL (Extended Shelf-life) milk. Milchwissenschaft 2004, 59, 143–146.
18. Blake, M.R.; Weimer, B.C.; McMahon, D.J.; Savello, P.A. Sensory and microbial quality of milk processed for extended shelf life by direct steam injection. J. Food Prot. 1995, 58, 1007–1013. [CrossRef]
19. Cromie, S.J.; Dommett, T.W.; Schmidt, D. Changes in the microflora of milk with different pasteurisation and storage conditions and aseptic packaging. Aust. J. Dairy Technol. 1989, 44, 74–77.
20. Collins, E.B. Heat resistant psychrotrophic microorganisms. J. Dairy Sci. 1981, 64, 157–160. [CrossRef]
21. Doll, E.V.; Scherer, S.; Wenning, M. Spoilage of microfiltered and pasteurized extended shelf life milk is mainly induced by psychrotolerant spore-forming bacteria that often originate from recontamination. Front. Microbiol. 2017, 8. [CrossRef] [PubMed]
22. Fromm, H.I.; Boor, K. Characterization of pasteurized fluid milk shelf-life attributes. J. Food Sci. 2004, 69, 207–214. [CrossRef]
23. Ranieri, M.L.; Boor, K.J. Short communication: Bacterial ecology of high-temperature, short-time pasteurized milk processed in the United States. J. Dairy Sci. 2009, 92, 4833–4840. [CrossRef] [PubMed]
24. Mugadza, D.T.; Buys, E.M. Spoilage Potential of Bacillus spp. & Paenibacillus spp. in Extended Shelf Life (ESL) Milk. In Proceedings of the SASDT 48th AGM & Symposium: Innovation and Cost Optimization, Cape St Francis, Eastern Cape, South Africa, 14–16 April 2015; Available online: http://www.sasdt.co.za/wp-content/uploads/2015/04/Session-8-Speaker-26-Mugadza1.pdf (accessed on 1 October 2017).
25. Martin, N.H.; Ranieri, M.L.; Murphy, S.C.; Ralyea, R.D.; Wiedmann, M.; Boor, K.J. Results from raw milk microbiological tests do not predict shelf-life performance of commercially pasteurized fluid milk. J. Dairy Sci. 2011, 94, 1211–1222. [CrossRef] [PubMed]
26. Scheldeman, P.; Goossens, K.; Rodriguez-Diaz, M.; Pil, A.; Goris, J.; Herman, L.; De Vos, P.; Logan, N.A.; Heyndrickx, M. Paenibacillus lactis sp. nov. isolated from raw and heat-treated milk. Int. J. Syst. Evol. Microbiol. 2004, 54, 885–891. [CrossRef] [PubMed]
27. Bosshard, P.; Zbinden, R.; Altwegg, M. Paenibacillus turicensis sp. nov., a novel bacterium harbouring heterogeneities between 16S rRNA genes. Int. J. Syst. Evol. Microbiol. 2002, 52, 2241–2249. [CrossRef] [PubMed]
28. Mugadza, D.T.; Buys, E.M. Source Tracking of Bacillus cereus in an Extended Shelf Life (ESL) Milk Processing Factory. 2017. Available online: http://sasdt.co.za/wp-content/uploads/2017/05/2017-Session-3-Speaker-3-Mugadza.pdf (accessed on 1 October 2017).
29. European Food Safety Authority (EFSA). Bacillus cereus and other Bacillus spp. in foodstuffs. Opinion of the Scientific Panel on Biological Hazards on Bacillus cereus and other Bacillus spp. in foodstuffs. EFSA J. 2005, 175, 1–48. [CrossRef]
30. McKillip, J.L. Prevalence and expression of enterotoxins in Bacillus cereus and other Bacillus spp., a literature review. Antonie Van Leeuwenhoek 2000, 77, 393–399. [CrossRef] [PubMed]
31. Cressey, P.; King, N.; Soboleva, T. Risk Profile: Bacillus cereus in Dairy Products. New Zealand Ministry for Primary Industries (MPI) Technical Paper, May 2016, No. 2016/58; ISBN 978-1-77665-373-7. Available online: www.mpi.govt.nz/dmsdocument/14149 (accessed on 1 October 2017).
32. International Dairy Federation. Bacillus cereus in Milk and Dairy Products; International Dairy Federation: Brussels, Belgium, 1992; Volume 275.
33. International Dairy Federation. Bacillus cereus in Milk and Dairy Products; International Dairy Federation: Brussels, Belgium, 2016.
34. Becker, H.; Schaller, G.; von Wiese, W.; Terplan, G. Bacillus cereus in infant foods and dried milk products. Int. J. Food Microbiol. 1994, 23, 1–15. [CrossRef] [PubMed]
35. Larsen, H.D.; Jørgensen, K. Growth of Bacillus cereus in pasteurized milk products. Int. J. Food Microbiol. 1999, 46, 173–176. [CrossRef]
36. Markland, S.M.; Farkas, D.F.; Kniel, K.E.; Hoover, D.G. Pathogenic psychrotolerant spore-formers: An emerging challenge for low-temperature storage of minimally processed foods. Foodborne Pathog. Dis. 2013, 10, 413–419. [CrossRef] [PubMed]
37. Ivy, R.A.; Ranieri, M.L.; Martin, N.H.; den Bakker, H.C.; Xavier, B.M.; Wiedmann, M.; Boor, K.J. Identification and characterization of psychrotolerant spore-formers associated with fluid milk production and processing. Appl. Environ. Microbiol. 2012, 78, 1853–1864. [CrossRef] [PubMed]
38. Raju, V.V.R.; Chetty, M.S.; Kumar, M.K. Aerobic psychrotrophic spore forming bacteria in heat treated milk. Cheiron 1989, 18, 15–18.
39. Van Netten, P.; van de Moosdijk, A.; van Hoensel, P.; Mossel, D.A.A.; Perales, I. Psychrotrophic strains of Bacillus cereus producing enterotoxin. J. Appl. Bact. 1990, 69, 73–79. [CrossRef]
40. Champagne, C.P.; Laing, R.R.; Roy, D.; Mafu, A.A. Psychrotrophs in dairy products: Their effect and their control. Crit. Rev. Food Sci. Nutr. 1994, 34, 1–30. [CrossRef] [PubMed]
41. Frank, J.F. Milk and dairy products. In Food Microbiology: Fundamentals and Frontiers; Doyle, M.P., Beuchat, L.R., Montville, T.J., Eds.; ASM Press: Washington, DC, USA, 1997.
42. Griffiths, M.W.; Phillips, J.D. Strategies to control the outgrowth of spores of psychrotrophic Bacillus spp. in dairy-products. 1. Use of naturally-occurring materials. Milchwissenschaft 1990, 45, 621–626.
43. Franklin, J.G. Some bacteriological problems in the market milk industry in the UK. J. Soc. Dairy Technol. 1969, 22, 100–112. [CrossRef]
44. Coghill, D.; Juffs, H.S. Incidence of psychrotrophic spore-forming bacteria in pasteurized milk and cream products and effect of temperature on their growth. Aust. J. Dairy Technol. 1979, 34, 150–153.
45. Ahmed, A.A.H.; Moustafa, M.K.; Marth, E.H. Incidence of Bacillus cereus in milk and some milk products. J. Food Prot. 1983, 46, 126–128. [CrossRef]
46. Rangasamy, P.N.; Iyer, M.; Roginsky, H. Isolation and characterisation of Bacillus cereus in milk and dairy products manufactured in Victoria. Aust. J. Dairy Technol. 1993, 48, 93–95.
47. Stewart, D.B. Factors influencing the incidence of B. cereus spores in milk. J. Soc. Dairy Technol. 1975, 28, 80–85. [CrossRef]
48. Meer, R.R.; Baker, J.; Bodyfelt, F.W.; Griffiths, M.W. Psychrotrophic Bacillus spp. in fluid milk-products—A review. J. Food Prot. 1991, 54, 969–979. [CrossRef]
49. Te Giffel, M.; Beumer, R.R.; Bonestroo, M.H.; Rombouts, F.M. Incidence and characterization of Bacillus cereus in two dairy processing plants. Neth. Milk Dairy J. 1996, 50, 479–492.
50. Salustiano, V.C.; Andrade, N.J.; Soares, N.F.F.; Lima, J.C.; Bernardes, P.C.; Luiz, L.M.P.; Fernandes, P.E. Contamination of milk with Bacillus cereus by post-pasteurization surface exposure as evaluated by automated ribotyping. Food Control 2009, 20, 439–442. [CrossRef]
51. Mugadza, D.T.; Buys, E.M. Diversity of Bacillus cereus strains in extended shelf life. Int. Dairy J. 2017, 73, 144–150. [CrossRef]
52. Svensson, B.; Ekelund, K.; Ogura, H.; Christiansson, A. Characterisation of Bacillus cereus isolated from milk silo tanks at eight different dairy plants. Int. Dairy J. 2004, 14, 17–27. [CrossRef]
53. Te Giffel, M.C.; Beumer, R.R.; Granum, P.E.; Rombouts, F.M. Isolation and characterisation of Bacillus cereus from pasteurised milk in household refrigerators in The Netherlands. Int. J. Food Microbiol. 1997, 34, 307–318. [CrossRef]
54. Mugadza, D.T.; Buys, E.M. Risk Characterisation of Bacillus cereus in Extended Shelf Life (ESL) Milk. In Proceedings of the 21st SAAFoST International Congress and Exhibition, Durban, South Africa, 7–9 September 2015.
55. Bartoszewiez, M.; Hansen, B.M.; Swiecicka, I. The members of the Bacillus cereus group are commonly present contaminants of fresh and heat-treated milk. Food Microbiol. 2008, 25, 588–596. [CrossRef] [PubMed]
56. Slaghuis, B.A.; Te Giffel, M.; Beumer, R.R.; Andre, G. Effect of pasturing on the incidence of Bacillus cereus spores in raw milk. Int. Dairy J. 1997, 7, 201–205. [CrossRef]
57. Notermans, S.; Dufrenne, J.; Teunis, P.; Beumer, R.; Te Giffel, M.; Peeters Weem, P. A risk assessment study of Bacillus cereus present in pasteurized milk. Food Microbiol. 1997, 14, 143–151. [CrossRef]
58. Agata, N.; Ohta, M.; Yokoyama, K. Production of Bacillus cereus emetic toxin (cereulide) in various foods. Int. J. Food Microbiol. 2002, 73, 23–27. [CrossRef]
59. Jooste, P.J.; Anelich, L.E.C.M. Safety and quality of dairy products. In Advanced Dairy Science and Technology; Britz, T.J., Robinson, R.K., Eds.; Blackwell Publishing Professional: Oxford, UK, 2008; pp. 153–182; ISBN 9780470697634.
60. Lewis, M.J. Microbiological issues associated with heat-treated milks. Int. J. Dairy Technol. 1999, 52, 121–125. [CrossRef]
61. Rowan, N.J.; Anderson, J.G. Diarrhoeal enterotoxin production by psychrotrophic Bacillus cereus present in reconstituted milk-based infant formulae (MIF). Lett. Appl. Microbiol. 1998, 26, 161–165. [CrossRef] [PubMed]
62. Juffs, H.; Deeth, H.C. Scientific Evaluation of Pasteurisation for Pathogen Reduction in Milk and Milk Products; FSANZ: Canberra, Australia, 2007; ISBN 978-0-642-34555-4.
63. Te Giffel, M.; Beumer, R.R.; Slaghuis, B.A.; Rombouts, F.M. Occurrence and characterization of (psychrotrophic) Bacillus cereus on farms in The Netherlands. Neth. Milk Dairy J. 1995, 49, 125–138.
64. Jensen, I.; Moir, C.J. Bacillus cereus and other Bacillus species. In Foodborne Microorganisms of Public Health Significance, 6th ed.; Hocking, A.D., Ed.; Australian Institute of Food Science and Technology Inc., NSW Branch, Food Microbiology Group: Waterloo, Australia, 2003; pp. 445–478; ISBN 0957890710.
65. Dufeu, J.; Leesment, H. Growth and resistance characteristics of some psychrotrophic spore-formers isolated from raw milk. In Proceedings of the XIX International Dairy Congress, New Dehli, India, 2–6 December 1974; pp. 535–536.
66. Dufrenne, J.; Bijwaard, M.; Te Giffel, M.; Beumer, R.; Notermans, S. Characteristics of some psychrotrophic Bacillus cereus isolates. Int. J. Food Microbiol. 1995, 27, 175–183. [CrossRef]
67. Odumeru, J.A.; Toner, A.K.; Muckle, C.A.; Griffiths, M.W.; Lynch, J.A. Detection of Bacillus cereus diarrheal enterotoxin in raw and pasteurized milk. J. Food Prot. 1997, 60, 1391–1393. [CrossRef]
68. Overcast, W.W.; Atmaram, K. The role of Bacillus cereus in sweet curdling of fluid milk. J. Milk Food Technol. 1974, 37, 233–236. [CrossRef]
69. Stone, J.M.; Rowlands, A. Broken or bitty cream in raw and pasteurised milk. J. Dairy Res. 1952, 19, 52–62. [CrossRef]
70. Stadhouders, J.; Hup, G. Effect of milk storage before pasteurization on the formation of flocs bitty cream by Bacillus cereus in pasteurized milk. Zuivelzicht 1980, 72, 178–180.
71. Mikolajcik, E.M. Thermodestruction of Bacillus spores in milk. J. Milk Food Technol. 1970, 33, 77–82. [CrossRef]
72. Franklin, J.G. Spores in milk-problems associated with UHT processing. J. Appl. Bact. 1970, 33, 180–191. [CrossRef]
73. Vyletelova, M.; Svec, P.; Pacova, Z.; Sedlacek, I.; Roubal, P. Occurrence of Bacillus cereus and Bacillus licheniformis strains in the course of UHT milk production. Czech J. Anim. Sci. 2002, 47, 200–205.
74. Bergere, J.-L.; Cerf, O. Heat resistance of Bacillus cereus spores. In Bacillus cereus in Milk and Milk Products; International Dairy Federation: Brussels, Belgium, 1992; Volume 275, pp. 23–25.
75. Bradshaw, J.G.; Peeler, J.T.; Twedt, R.M. Heat-resistance of ileal loop reactive Bacillus cereus strains isolated from commercially canned food. Appl. Microbiol. 1975, 30, 943–945. [PubMed]
76. Stoeckel, M.; Westermann, A.C.; Atamer, Z.; Hinrichs, J. Thermal inactivation of Bacillus cereus spores in infant formula under shear conditions. Dairy Sci. Technol. 2013, 93, 163–175. [CrossRef]
77. Van Asselt, E.D.; Zwietering, M.H. A systematic approach to determine global thermal inactivation parameters for various food pathogens. Int. J. Food Microbiol. 2006, 107, 73–82. [CrossRef] [PubMed]
78. Hinrichs, J.; Atamer, Z. Sterilization of milk and other products. In Encyclopedia of Dairy Sciences, 2nd ed.; Fuquay, J.W., Fox, P.F., Eds.; McSweeney Academic Press: San Diego, CA, USA, 2011; Volume 2, pp. 714–724; ISBN 978-0-12-374402-9.
79. Van Asselt, A.J.; Te Giffel, M.C. Hygienic practices in liquid milk dairies. In Market Milks–Processing and Quality Management; Tamime, A.Y., Ed.; Blackwell Publishing: Oxford, UK, 2009; pp. 48–71.
80. Simmonds, P.; Mossel, B.L.; Intaraphan, T.; Deeth, H.C. The heat resistance of Bacillus spores when adhered to stainless steel and its relationship to spore hydrophobicity. J. Food Prot. 2003, 66, 2070–2075. [CrossRef] [PubMed]
81. Pfeifer, J.; Kessler, H. Heat resistance of Bacillus cereus spores located between seals and seal surfaces. J. Food Prot. 1995, 58, 1206–1210. [CrossRef]
82. Bergere, J.-L. Spore formation and germination of Bacillus cereus: The spore cycle. In Bacillus cereus in Milk and Milk Products; International Dairy Federation: Brussels, Belgium, 1992; Volume 275, pp. 9–14.
83. Stadhouders, J.; Hup, G.; Langeveld, L.P.M. Some observations on the germination, heat resistance and outgrowth of fast-germinating and slow-germinating spores of Bacillus cereus in pasteurized milk. Neth. Milk Dairy J. 1980, 34, 215–228.
84. Guirguis, A.H.; Griffiths, M.W.; Muir, D.D. Spore-forming bacteria in milk. 1. Optimization of heat-treatment for activation of spores of Bacillus species. Milchwissenschaft 1983, 38, 641–644.
85. Wilkinson, G.; Davies, F.L. Germination of spores of Bacillus cereus in milk and milk dialysates: Effect of heat treatment. J. Appl. Bact. 1973, 36, 485–496. [CrossRef]
86. Labots, H.; Hup, G. Bacillus cereus in raw and pasteurized milk. II. The occurrence of slow and fast germinating spores in milk and their significance in the enumeration of B. cereus spores. Neth. Milk Dairy J. 1964, 18, 167–176.
87. Anderson Borge, G.I.; Skeie, M.; Sorhaug, T.; Langsrud, T.; Granum, P.E. Growth and toxin profiles of Bacillus cereus isolated from different food sources. Int. J. Food Microbiol. 2001, 69, 237–246. [CrossRef]
88. Griffiths, M.W.; Phillips, J.D. Modeling the relation between bacterial-growth and storage-temperature in pasteurized milks of varying hygienic quality. J. Soc. Dairy Technol. 1988, 41, 96–102. [CrossRef]
89. Mayr, R.; Gutser, K.; Busse, M.; Seiler, H. Gram-positive non-spore-forming bacteria are frequent spoilage organisms of German retail ESL Extended Shelf-life milk. Milchwissenschaft 2004, 59, 262–266.
90. Mugadza, D.; Buys, E. Diversity of Spore Former and Non-Spore Former Bacteria in Extended Shelf-Life (ESL) Milk; South African Society of Dairy Technology Dairy Symposium: Capetown, South Africa, 2014.
91. Griffiths, M.W.; Phillips, J.D. The application of the preincubation test in commercial dairies. Aust. J. Dairy Technol. 1986, 41, 71–79.
92. Craven, H.M.; Macauley, B.J. Micro-organisms in pasteurised milk after refrigerated storage. 3. Effect of milk processors. Aust. J. Dairy Technol. 1992, 47, 50–55.
93. Brody, A.L. Aseptic and extended-shelf-life packaging. Food Technol. 2006, 60, 66–68.
94. Brody, A.L. The when and why of aseptic packaging. Food Technol. 2000, 54, 101–102.
95. Mayer, H.K.; Raba, B.; Meier, J.; Schmid, A. RP-HPLC analysis of furosine and acid-soluble β-lactoglobulin to assess the heat load of extended shelf life milk samples in Austria. Dairy Sci. Technol. 2010, 90, 413–428. [CrossRef]
96. Gaafar, A.M.M. Investigation into the Cooked Flavor in Heat-Treated Milk. Ph.D. Thesis, University of Reading, Reading, UK, 1987.
97. Oliveira, L.N.; Marinho, V.T.; Zamagno, M.V.; Lauro, M.A.; Barboza, J.A.N.; da Silva, P.H.F. Assessment of whey protein nitrogen index as an indicator of heat treatment for UHT milk and milk powder. J. Candido Tostes Dairy Inst. 2015, 70, 78–84. [CrossRef]
98. Anema, S.G.; Lloyd, R.J. Analysis of whey protein denaturation: A comparative study of alternative methods. Milchwissenschaft 1999, 54, 206–210.
99. Lorenzen, P.C.; Clawin-Raedecker, I.; Einhoff, K.; Hammer, P.; Hartmann, R.; Hoffmann, W.; Martin, D.; Molkentin, J.; Walte, H.G.; Devrese, M. A survey of the quality of extended shelf life (ESL) milk in relation to HTST and UHT milk. Int. J. Dairy Technol. 2011, 64, 166–178. [CrossRef]
100. Gallmann, P.U. Possible quality improvements/benefits of extended shelf life (ESL) milk. In Proceedings of the Conference on Extended Shelf-Life Milk; International Dairy Federation: Brussels, Belgium, 2000.
101. Kaufmann, V.; Scherer, S.; Kulozik, U. Procedures for the prolongation of the storability of consumable milk and its material changes: ESL milk. J. Verbraucherschutz Lebensm.-J. Consum. Prot. Food Saf. 2010, 5, 59–64. [CrossRef]
102. Vatne, K.B.; Castberg, H.B. Processing and packaging aspects of extended shelf life products. Aust. J. Dairy Technol. 1991, 46, 98–100.
103. Kaufmann, V.; Kulozik, U. Processing factors influencing quality and stability of extended shelf life (ESL) milk. DMZ Lebensm. Milchmirtschaft 2008, 129, 28–30. [CrossRef]
104. MGT. ESL Systems. Extended Shelf Life Milk (Brochure). Available online: http://www.mgt.co.il/sites/MGT_site/UserContent/files/MGT_ESL_brochure_V9.pdf (accessed on 1 October 2017).
105. Manji, B. Regulatory perspectives to ESL products: North American situation. In Proceedings of the Conference on Extended Shelf-Life Milk; International Dairy Federation: Brussels, Belgium, 2000.
106. Ranjith, H.M.P. High temperature pasteurization. In Proceedings of the Conference on Extended Shelf-Life Milk; International Dairy Federation: Brussels, Belgium, 2000.
107. Lyster, R.L.J. The denaturation of α-lactalbumin and β-lactoglobulin in heated milk. J. Dairy Res. 1970, 37, 233–243. [CrossRef]
108. Crudden, A.; Fox, F.; Kelly, A.L. Factors affecting the hydrolytic action of plasmin in milk. Int. Dairy J. 2005, 15, 305–313. [CrossRef]
109. Browning, E.; Lewis, M.; MacDougall, D. Predicting safety and quality parameters for UHT-processed milks. Int. J. Dairy Technol. 2001, 54, 111–120. [CrossRef]
110. Tran, H.; Datta, N.; Lewis, M.J.; Deeth, H.C. Predictions of some product parameters based on the processing conditions of ultra-high-temperature milk plants. Int. Dairy J. 2008, 18, 939–944. [CrossRef]
111. Kessler, H.G. Food Engineering and Dairy Technology; Verlag A. Kessler: Freising, Germany, 1981.
112. Chavan, R.S.; Chavan, S.R.; Khedkar, C.D.; Jana, A.H. UHT milk processing and effect of plasmin activity on shelf-life: A review. Comp. Rev. Food Sci. Food Saf. 2011, 10, 251–268. [CrossRef]