Abstract
Heat-based processes have been used for centuries for food preservation and still remain the most widely used preservation technique in food manufacturing. However, thermal processing treatments are not as efficacious in the destruction of pathogenic microorganisms at low water activities compared to moist environments. Several dry-heat processes have been applied to low-moisture foods and include drying, hot air and baking, air impingement, dry roasting, and oil roasting. These applications require higher temperatures and longer heat times to obtain equivalent lethality to moist-heat processes. Moist-heat processes, which include blanching, moist-air impingement, and controlled condensation steam, are very effective at inactivating microorganisms because the added moisture significantly reduces microbial thermal resistance. However, an increased moisture content of the product can reduce the shelf life, often resulting in the necessity for the (energy consuming) re-drying of product to remove the added moisture. Lastly, extrusion has been shown to be an effective process for microbial inactivation.
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References
ABC (2007a) Guidelines for validation of dry roasting processes. http://www.almondboard.com/Handlers/FoodQualitySafety/Pasteurization/PasteurizationPRogram/ValidationGuidelines/. Accessed Nov 2013
ABC (2007b) Guidelines for validation of oil roasting processes. http://www.almondboard.com/Handlers/FoodQualitySafety/Pasteurization/PasteurizationPRogram/ValidationGuidelines/. Accessed Nov 2013
Abd SJ, McCarthy KL, Harris LJ (2012) Impact of storage time and temperature on thermal inactivation of Salmonella enteritidis PT 30 on oil-roasted almonds. J Food Sci 77(1):M42–M47
Anderson NM, Keller S, Mishra N, Gradl D, Pickens S, Conway C, Hartter T, Rokey G, Grasso E, Stam C, Chirtel S (2014) Survival of Salmonella related to temperature and water activity during extrusion of a simple oat flour model food. IFT Annual Meeting and Food Expo, New Orleans, LA
Andress EL (2006) How do i freeze. http://nchfp.uga.edu/how/freeze/blanching.html. Accessed Jan 2014
Anonymous (2001) Pasteurization of spices: fact sheet no. 17a. T. F. Systems. Cambs, England
Anonymous (2012) On the safe side: effective decontamination of herbs and spices with a ventilex continuous steam sterilizer for “ultra pasteurization.” I. Imtech Ventilex USA. Middletown, OH
Anonymous (2013) Safesteril® steam sterilization: frequently asked questions. http://www.safesteril.com/en/download.php. Accessed Dec 2013
Anonymous (2014a) Herb and botanical steam sterilization with safesteril®. http://www.safesteril.com/en/download.php. Accessed Dec 2013
Anonymous (2014b) Safesteril® pasteurization and sterilization systems for seeds, nuts and dried fruits. http://www.safesteril.com/en/download.php. Accessed Dec 2013
Anonymous (2014c) Steam sterilization process “steristep”. http://www.natprocess.com/steam.php. Accessed Jan 2014
Anonymous (2014d) Sterilization/pasteurization of dried products. http://www.revtech-process-systems.com. Accessed Feb 2014
Anonymous (2014e) Steripure steam sterilization services. http://www.steripure.fr. Accessed Feb 2014
Archer J, Jervis ET, Bird J, Gaze JE (1998) Heat resistance of Salmonella Weltevreden in low-moisture environments. J Food Protect 61(8):969–973
ASTA (2011) Clean, safe spices: guidance from the American Spice Trade Association. American Spice Trade Association, Washington, DC
Axtell BLA, Bush A (2000) Small scale drying. IT Publications, London
Bansal T, Garg S (2008) Probiotics: from functional foods to pharmaceutical products. Curr Pharm Biotechnol 9(4):267–287
Bari L, Nei D, Sotome I, Nishina IY, Hayakawa F, Isobe S, Kawamoto S (2010) Effectiveness of superheated steam and gas catalytic infrared heat treatments to inactivate Salmonella on raw almonds. Foodborne Path Dis 7(7):845–850
Bari L, Nei D, Sotome I, Nishina IY, Isobe S, Kawamoto S (2009) Effectiveness of sanitizers, dry heat, hot water, and gas catalytic infrared heat treatments to inactivate Salmonella on almonds. Foodborne Path Dis 6(8):953–958
Barrile JC, Cone JF (1970) Effect of added moisture on the heat resistance of Salmonella anatum in milk chocolate. Appl Microbiol 19(1):177–178
Barrile JC, Ostovar K, Keeney PG (1971) Microflora of cocoa beans before and after roasting at 150 °C. J Milk Food Technol 34(7):369–371
Bell C, Kyriakides A (2002) Salmonella: a practical approach to the organism and its control in foods. Iowa State University Press, Ames, IA
Beuchat LR, Mann DA (2011) Inactivation of Salmonella on pecan nutmeats by hot air treatment and oil roasting. J Food Protect 74(9):1441–1450
Bianchini A, Stratton J, Weier S, Hartter T, Plattner B, Rokey G, Hertzel G, Gompa L, Martinez B, Eskridge AM (2012) Validation of extrusion as a killing step for Enterococcus faecium in a balanced carbohydrate-protein meal by using a response surface design. J Food Protect 75(9):1646–1653
Bianchini A, Stratton J, Weier S, Hartter T, Plattner B, Rokey G, Hertzel G, Gompa L, Martinez B, Eskridge KM (2014) Use of Enterococcus faecium as a surrogate for Salmonella enterica during extrusion of a balanced carbohydrate-protein meal. J Food Protect 77(1):75–82
Bingol G, Yang J, Brandl MT, Pan Z, Wang H, McHugh TH (2011) Infrared pasteurization of raw almonds. J Food Eng 104(3):387–393
Brandl MT, Pan Z, Huynh S, McHugh TH (2008) Reduction of Salmonella Enteritidis population sizes on almond kernels with infrared heat. J Food Protect 71:153–158
CDC (2014) Foodborne outbreak online database. http://wwwn.cdc.gov/foodborneoutbreaks/Default.aspx. Accessed Jan 2014
Cenkowski S, Pronyk C, Zmidzinska D, Muir WE (2007) Decontamination of food products with superheated steam. J Food Eng 83(1):68–75
Chan EWC, Lim YY, Wong SK, Lim KK, Tan SP, Lianto FS, Yong MY (2009) Effects of different drying methods on the antioxidant properties of leaves and tea of ginger species. Food Chem 113(1):166–172
Crane FM, Hansen M, Yoder R, Lepley K, Cox P (1972) Effect of processing feeds on molds, Salmonella, and other harmful substances in feeds. Proceedings of the symposium: effects of processing on the nutritional value of feeds, National Academy of Sciences, Gainesville, FL
Dhas PHA, Korkanthimath VS (2003) Processing and quality of black pepper – a review. J Spices Aromatic Crops 12(1):1–13
Dimitrellou D, Kandylis P, Kourkoutas Y, Koutinas AA, Kanellaki M (2009) Evaluation of thermally-dried Kluyveromyces marxianus as baker’s yeast. Food Chem 115(2):691–696
Dimitrellou D, Tsaousi K, Kourkoutas Y, Panas P, Kanellaki M, Koutinas AA (2008) Fermentation efficiency of thermally dried immobilized kefir on casein as starter culture. Process Biochem 43(12):1323–1329
DiPersio PA, Yoon Y, Sofos JN, Kendall PA (2005) Inactivation of Salmonella during drying and storage of carrot slices prepared using commonly recommended methods. J Food Sci 70(4):M230–M235
Doyle M (2009) Preventing Salmonella contamination in peanut products. http://www.worldpeanutinfo.com/HotTopics/2009/documents/Doyle2009hottopic.pdf. Accessed Dec 2013
Doyle ME, Mazzotta AS (2000) Review of studies on the thermal resistance of Salmonellae. J Food Protect 63(6):779–795
Doyle MP, Beuchat LR (2007) Food microbiology: fundamentals and frontiers. ASM Press, Washington, DC
Doymaz İ, Pala M (2002) Hot-air drying characteristics of red pepper. J Food Eng 55(4):331–335
Du WX, Abd SJ, McCarthy KL, Harris LJ (2010) Reduction of Salmonella on inoculated almonds exposed to hot oil. J Food Protect 73(7):1238–1246
Farmiloe FJ, Cornford SJ, Coppock JBM, Ingram M (1954) The survival of Bacillus subtilis spores in the baking of bread. J Sci Food Agri 5(6):292–304
Fellows P (2000) Food processing technology principles and practice. CRC Press, Boca Raton, FL
Feyissa AH, Gernaey KV, Ashokkumar S, Adler-Nissen J (2011) Modelling of coupled heat and mass transfer during a contact baking process. J Food Eng 106(3):228–235
Fu N, Chen XD (2011) Towards a maximal cell survival in convective thermal drying processes. Food Res Int 44(5):1127–1149
GMA (2009) Control of Salmonella in low-moisture foods. Grocery Manufacturers Association, Washington, DC
Goepfert JM, Iskander IK, Amundson CH (1970) Relation of the heat resistance of Salmonellae to the water activity of the environment. Appl Microbiol 19(3):429–433
Ha JW, Kang DH (2013) Simultaneous near-infrared radiant heating and UV radiation for inactivating Escherichia coli O157:H7 and Salmonella enterica serovar Typhimurium in powdered red pepper (capsicum annuum l). Appl Environ Microbiol 79(21):6568–6575
Harper NM, Roberts MN, Getty KJ, Boyle EA, Fung DY, Higgins JJ (2009) Evaluation of two thermal processing schedules at low relative humidity for elimination of Escherichia coli O157:H7 and Salmonella serovars in chopped and formed beef jerky. J Food Protect 72(12):2476–2482
Harris LJ (2009) Process validation for low-water activity foods. http://www.foodprotection.org/files/rr_presentations/RR_07.pdf. Accessed Nov 2013
Harris LJ, Uesugi AR, Abd SJ, McCarthy KL (2012) Survival of Salmonella Enteritidis PT 30 on inoculated almond kernels in hot water treatments. Food Res Intl 45(2):1093–1098
Hirasa K, Takemasa M (1998) Spice science and technology. Marcel Dekker, Inc., New York, NY
Holley RA (1985) Beef jerky: Viability of food-poisoning microorganisms on jerky during its manufacture and storage. J Food Protect 48(2):100–106
Horaczek A, Viernstein H (2004) Beauveria brongniartii subjected to spray-drying in a composite carrier matrix system. J Microencapsulation 21(3):317–330
Hsieh F-H, Acott K, Labuza TP (1976) Death kinetics of pathogens in a pasta product. J Food Sci 41(3):516–519
Ivarsson C (2011) Nut pasteurization: minimising impact on appearance, colour and flavor. AgroFood Industry Hi-Tech 22(3):22–24
Izurieta WP, Komitopoulou E (2012) Effect of moisture on Salmonella spp. heat resistance in cocoa and hazelnut shells. Food Res Intl 45(2):1087–1092
Jay JM, Loessner MJ, Golden DA (2005) Modern food microbiology. Springer, New York, NY
Jeong S, Marks BP, Orta-Ramirez A (2009) Thermal inactivation kinetics for Salmonella Enteritidis PT30 on almonds subjected to moist-air convection heating. J Food Protect 72(8):1602–1609
Kahyaoglu T, Kaya S (2006) Determination of optimum processing conditions for hot-air roasting of hulled sesame seeds using response surface methodology. J Sci Food Agric 86:181–185
Keller SE, Grasso EM, Halik LA, Fleischman GJ, Chirtel SJ, Grove SF (2012) The effect of growth on the thermal resistance and survival of Salmonella Tennessee and Oranienburg in peanut butter using a new thin-layer thermal death time device. J Food Protect 75(6):1125–1130
Keller SE, VanDoren JM, Grasso EM, Halik LA (2013) Growth and survival of Salmonella in ground black pepper (piper nigrum). Food Microbiol 34(1):182–188
Krishnamurthy K, Khurana HK, Jun S, Irudayaraj J, Demirci A (2008) Infrared heating in food processing: an overview. Comp Rev Food Sci Food Safety 7:2–13
Leistritz W (1997) Methods of bacterial reduction in spices. Spices: flavor chemistry and antioxidant properties. American Chemical Society, Washington, DC, pp 7–10
Li Y, Hsieh F, Fields ML, Huff HE, Badding SL (1993) Thermal inactivation and injury of Clostridium sporogenes spores during extrusion of mechanically deboned turkey mixed with white corn flour. J Food Process Preserv 17(5):391–403
LiCari JJ, Potter NN (1970) Salmonella survival during spray drying and subsequent handling of skimmilk powder. Effects of drying conditions. J Dairy Sci 53(7):871–876
Likimani TA, Sofos JN, Maga JA, Harper JM (1990) Methodology to determine destruction of bacterial spores during extrusion cooking. J Food Sci 55(5):1388–1393
Meyer MT, Vaughn RH (1969) Incidence of Escherichia coli in black walnut meats. Appl Microbiol 18(5):925–931
Morgan CA, Herman N, White PA, Vesey G (2006) Preservation of micro-organisms by drying: a review. J Microbiol Methods 66(2):183–193
Nascimento MDSD, Pena PO, Brum DM, Imazaki FT, Tucci MLS, Efraim P (2013) Behavior of Salmonella during fermentation, drying and storage of cocoa beans. Intl J Food Microbiol 167(3):363–368
Nascimento MS, Brum DM, Pena PO, Berto MI, Efraim P (2012) Inactivation of Salmonella during cocoa roasting and chocolate conching. Intl J Food Microbiol 159(3):225–229
Nieto A, Castro MA, Alzamora SM (2001) Kinetics of moisture transfer during air drying of blanched and/or osmotically dehydrated mango. J Food Eng 50(3):175–185
Nygaard H, Hostmark O (2008) Microbial inactivation during superheated steam drying of fish meal. Drying Technol 26(2):222–230
Okelo PO, Wagner DD, Carr LE, Wheaton FW, Douglass LW, Joseph SW (2006) Optimization of extrusion conditions for elimination of mesophilic bacteria during thermal processing of animal feed mash. Anim Feed Sci Technol 129(1–2):116–137
Phungamngoen C, Chiewchan N, Devahastin S (2011) Thermal resistance of Salmonella enterica serovar Anatum on cabbage surfaces during drying: effects of drying methods and conditions. Intl J Food Microbiol 147(2):127–133
Phungamngoen C, Chiewchan N, Devahastin S (2013) Effects of various pretreatments and drying methods on Salmonella resistance and physical properties of cabbage. J Food Eng 115(2):237–244
Podolak R, Enache E, Stone W, Black DG, Elliott PH (2010) Sources and risk factors for contamination, survival, persistence, and heat resistance of Salmonella in low-moisture foods. J Food Protect 73(10):1919–1936
Potter NN, Hotchkiss JH (1995) Food science. Chapman & Hall, New York, NY
Puupponen-Pimiä R, Häkkinen ST, Aarni M, Suortti T, Lampi A-M, Eurola M, Piironen V, Nuutila AM, Oksman-Caldentey K-M (2003) Blanching and long-term freezing affect various bioactive compounds of vegetables in different ways. J Sci Food Agric 83(14):1389–1402
Quéguiner C, Dumay E, Cavalier C, Cheftel JC (1989) Reduction of Streptococcus thermophilus in a whey protein isolate by low moisture extrusion cooking without loss of functional properties. Intl J Food Sci Technol 24(6):601–612
Ratti C (2001) Hot air and freeze-drying of high-value foods: a review. J Food Eng 49(4):311–319
Sagoo SK, Little CL, Greenwood M, Mithani V, Grant KA, McLauchlin J, de Pinna E, Threlfall EJ (2009) Assessment of the microbiological safety of dried spices and herbs from production and retail premises in the United Kingdom. Food Microbiol 26(1):39–43
Sandu C (1986) Infrared radiative drying in food engineering: a process analysis. Biotechnol Prog 2(3):109–119
Sangi D (2011) Heading for the future. Diagram (official magazine) of Buleher (158)
Schweiggert U, Carle R, Schieber A (2007) Conventional and alternative processes for spice production – a review. Trends Food Sci Technol 18(5):260–268
Smith JP, Daifas DP, El-Khoury W, Koukoutsis J, El-Khoury A (2004) Shelf life and safety concerns of bakery products – a review. Crit Rev Food Sci Nutr 44(1):19–55
Sohail M, Ayub M, Ahmad I, Ali B, Dad F (2011) Physicochemical and microbiological evaluation of sun dried tomatoes in comparison with fresh tomatoes. Pakistan J Biochem Mol Biol 44(3):106–109
Staack N, Ahrne L, Borch E, Knorr D (2008) Effects of temperature, pH, and controlled water activity on inactivation of spores of Bacillus cereus in paprika powder by near IR radiation. J Food Eng 89:319–324
Standing CN (1974) Individual heat transfer modes in band oven biscuit baking. J Food Sci 39(2):267–271
Therdthai N, Zhou W, Adamczak T (2004) Three-dimensional cfd modelling and simulation of the temperature profiles and airflow patterns during a continuous industrial baking process. J Food Eng 65(4):599–608
Toğrul İT, Pehlivan D (2004) Modelling of thin layer drying kinetics of some fruits under open-air sun drying process. J Food Eng 65(3):413–425
Torlak E, Sert D, Serin P (2013) Fate of Salmonella during sesame seeds roasting and storage of tahini. Intl J Food Microbiol 163(2–3):214–217
Uesugi AR, Harris LJ (2006) Growth of Salmonella Enteritidis phage type 30 in almond hull and shell slurries and survival in drying almond hulls. J Food Protect 69(4):712–718
Ukuku DO, Onwulata C, Mukhopadhyay S (2012) Behavior of Escherichia coli bacteria in whey protein concentrate and corn meal during twin screw extrusion processing at different temperatures. J Food Process Technol 3(4):150
Vorria E, Giannou V, Tzia C (2004) Hazard analysis and critical control point of frying – safety assurance of fried foods. Eur J Lipid Sci Technol 106(11):759–765
Walker C, Li A (1993) Impingement oven technology. Part III: combining impingement with microwave. Am Inst Baking Technol Bull 15:1–6
Walsh DE, Funke BR (1975) The influence of spaghetti extruding, drying and storage on survival of Staphylococcus aureus. J Food Sci 40(4):714–716
Walsh DE, Funke BR, Graalum KR (1974) Influence of spaghetti extruding conditions, drying and storage on the survival of Salmonella typhimurium. J Food Sci 39(6):1105–1106
Yang J, Bingol G, Pan Z, Brandl MT, McHugh TH, Wang H (2010) Infrared heating for dry-roasting and pasteurization of almonds. J Food Eng 101(3):273–280
Yesair J, Williams OB (1942) Spice contamination and its control. J Food Sci 7:118–126
Yoon Y, Geornaras I, Kendall PA, Sofos JN (2009) Modeling the effect of marination and temperature on Salmonella inactivation during drying of beef jerky. J Food Sci 74(4):M165–M171
Yoon Y, Stopforth JD, Kendall PA, Sofos JN (2004) Inactivation of Salmonella during drying and storage of roma tomatoes exposed to predrying treatments including peeling, blanching, and dipping in organic acid solutions. J Food Protect 67(7):1344–1352
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Grasso, E.M., Stam, C.N., Anderson, N.M., Krishnamurthy, K. (2014). Heat and Steam Treatments. In: Gurtler, J., Doyle, M., Kornacki, J. (eds) The Microbiological Safety of Low Water Activity Foods and Spices. Food Microbiology and Food Safety(). Springer, New York, NY. https://doi.org/10.1007/978-1-4939-2062-4_21
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