Abstract
There is a continuous need for thin edible coatings with excellent barrier properties, which has resulted in the quest for new coating methods. Electrospraying is a novel coating technique that is known to yield fine droplets of size down to 20 μm and even smaller ones, giving the potential of ultra-thin and uniform coatings. In this review, various process parameters are discussed that influence the coating quality and efficiency for electrospraying. The droplet size during the spraying process is a function of operational parameters and liquid properties. Successful deposition of thin films has been reported for model (conductive and non-conductive) surfaces (aluminium, Parafilm and various membranes) as well as food surfaces (apple and candies). This review article is an attempt to summarize valuable information about process optimization for food applications. The existing scaling relations are presented here relating various process and product-related parameters.
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References
Abate AR, Thiele J, Weinhart M, Weitz DA (2010) Patterning microfluidic device wettability using flow confinement. Lab Chip 10:1774–1776. doi:10.1039/C004124F
Abu-Ali J, Barringer SA (2005) Method for electrostatic atomization of emulsions in an EHD system. J Electrost 63:361–369. doi:10.1016/j.elstat.2004.11.004
Amefia A, Abu-Ali J, Barringer S (2006) Improved functionality of food additives with electrostatic coating. Innovative Food Science and Emerging Technologies 7:176–181
Andrade RD, Skurtys O, Osorio FA (2012) Atomizing spray systems for application of edible coatings. Compr Rev Food Sci Food Saf 11:323–337
Barringer SA, Abu-Ali J, Chung, HJ (2005) Electrostatic powder coating of sodium erythorbate and GDL to improve color and decrease microbial counts on meat Innovative Food Science and Emerging Technologies 6:189–193
Biehl H, Barringer S (2003) Physical properties important to electrostatic and nonelectrostatic powder transfer efficiency in a tumble drum. J Food Sci 68:2512–2515
Bock N, Dargaville TR, Woodruff MA (2012) Electrospraying of polymers with therapeutic molecules: state of the art. Prog Polym Sci 37:1510–1551
Bock N, Dargaville TR, Woodruff MA (2014) Controlling microencapsulation and release of micronized proteins using poly(ethylene glycol) and electrospraying. Eur J Pharm Biopharm 87:366–377. doi:10.1016/j.ejpb.2014.03.008
Boom R, Schroen K, Vermue M (2011) Barrier technology in food products. In: Linnemann AR, Schroen CGPH, Boekel, MAJSV (eds) Food product design. 2nd edn. Wageningen Academic Publishers, Wageningen
Bourlieu C, Guillard V, Vallès-Pamiès B, Guilbert S, Gontard N (2009) Edible moisture barriers: how to assess of their potential and limits in food products shelf-life extension? Crit Rev Food Sci Nutr 49:474–499
Brownsill R (2015) Why Electrostatics. http://www.spiceapplications.com/why-electrostatics. Accessed 8–03-2015 2015
Debeaufort F, Voilley A (2009) Lipid-based edible films and coatings. In: Embuscado, ME, Huber KC (eds) Edible films and coatings for food application. Springer New York, pp 135–164
Elayedath S, Barringer S (2002) Electrostatic powder coating of shredded cheese with antimycotic and anticaking agents. Innovative Food Science and Emerging Technologies 3:385–390
Enayati M, Chang M-W, Bragman F, Edirisinghe M, Stride E (2011) Electrohydrodynamic preparation of particles, capsules and bubbles for biomedical engineering applications. Colloids Surf A Physicochem Eng Asp 382:154–164
Gaona-Sánchez VA et al (2015) Preparation and characterisation of zein films obtained by electrospraying. Food Hydrocoll 49:1–10. doi:10.1016/j.foodhyd.2015.03.003
Gomez-Mascaraque LG, Morfin RC, Pérez-Masiá R, Sanchez G, Lopez-Rubio A (2016) Optimization of electrospraying conditions for the microencapsulation of probiotics and evaluation of their resistance during storage and in-vitro digestion. LWT Food Sci Technol 69:438–446. doi:10.1016/j.lwt.2016.01.071
Gorty AV, Barringer SA (2011) Electrohydrodynamic spraying of chocolate. Journal of Food Processing and Preservation 35:542–549. doi:10.1111/j.1745-4549.2010.00500.x
Hayati I, Bailey A, Tadros TF (1987a) Investigations into the mechanism of electrohydrodynamic spraying of liquids. II. Mechanism of stable jet formation and electrical forces acting on a liquid cone. J Colloid Interface Sci 117:222–230
Hayati I, Bailey AI, Tadros TF (1987b) Investigations into the mechanisms of electrohydrodynamic spraying of liquids. I. Effect of electric field and the environment on pendant drops and factors affecting the formation of stable jets and atomization. J Colloid Interface Sci 117:205–221
Hossein J (2011) Whey protein films and coatings: a review. Pakistan J Nutr 10:296–301
Jaworek A (2007) Electrospray droplet sources for thin film deposition. J Mater Sci 42:266–297
Jaworek A (2008) Electrostatic micro- and nanoencapsulation and electroemulsification: a brief review. J Microencapsul 25:443–468
Jaworek A, Sobczyk A, Czech T, Krupa A (2014) Corona discharge in electrospraying. J Electrost 72:166–178. doi:10.1016/j.elstat.2014.01.004
Khan MKI (2013) Electrospraying for efficient coating of foods. Wageningen UR
Khan MKI, Cakmak H, Tavman Ş, Schutyser M, Schroёn K (2013a) Anti-browning and barrier properties of edible coatings prepared with electrospraying. Innovative Food Sci Emerg Technol. doi:10.1016/j.ifset.2013.10.006
Khan MKI, Maan AA, Schutyser M, Schroёn K, Boom R (2013b) Electrospraying of water in oil emulsions for thin film coating. J Food Eng 119:776–780
Khan MKI, Mujawar LH, Schutyser MAI, Schroën K, Boom R (2013c) Deposition of thin lipid films prepared by electrospraying. Food Bioprocess Technol 6:3047–3055. doi:10.1007/s11947-012-0974-7
Khan MKI, Schutyser M, Schroën K, Boom R (2012a) Electrostatic powder coating of foods—state of the art and opportunities. J Food Eng 111:–5
Khan MKI, Schutyser M, Schroën K, Boom R (2012b) The potential of electrospraying for hydrophobic film coating on foods. J Food Eng 108:410–416. doi:10.1016/j.jfoodeng.2011.09.005
Khan MKI, Schutyser M, Schroën K, Boom R (2014) Barrier properties and storage stability of edible coatings prepared with electrospraying. Innovative Food Sci Emerg Technol 23:182–187. doi:10.1016/j.ifset.2014.03.001
Laelorspoen N, Wongsasulak S, Yoovidhya T, Devahastin S (2014) Microencapsulation of Lactobacillus acidophilus in zein–alginate core–shell microcapsules via electrospraying. J Funct Foods 7:342–349. doi:10.1016/j.jff.2014.01.026
Lin D, Zhao Y (2007) Innovations in the development and application of edible coatings for fresh and minimally processed fruits and vegetables. Compr Rev Food Sci Food Saf 6:60–75. doi:10.1111/j.1541-4337.2007.00018.x
Luo CJ, Loh S, Stride E, Edirisinghe M (2012) Electrospraying and electrospinning of chocolate suspensions. Food Bioprocess Technol 5:2285–2300. doi:10.1007/s11947-011-0534-6
Luo Y, Zhu J, Ma Y, Zhang H (2008) Dry coating, a novel coating technology for solid pharmaceutical dosage forms. Int J Pharm 358:16–22. doi:10.1016/j.ijpharm.2008.03.028
Maan AA, Sahin S, Mujawar LH, Boom R, Schroën K (2013) Effect of surface wettability on microfluidic EDGE emulsification. J Colloid Interface Sci 403:157–159. doi:10.1016/j.jcis.2013.04.036
Mayr MB, Barringer SA (2006) Corona compared with triboelectric charging for electrostatic powder coating. J Food Sci 71:E171–E177. doi:10.1111/j.1750-3841.2006.00024.x
Mazumder MK, Wankum DL, Sims RA, Mountain JR, Chen H, Pettit P, Chaser T (1997) Influence of powder properties on the performance of electrostatic coating process. J Electrost 40-41:369–374
Meng X, Zhang H, Zhu J (2009a) Characterization of particle size evolution of the deposited layer during electrostatic powder coating processes. Powder Technol 195:264–270
Meng X, Zhu J, Zhang H (2009b) Influences of different powders on the characteristics of particle charging and deposition in powder coating processes. J Electrost 67:663–671
Meng XB, Zhang H, Zhu JX (2008) The characteristics of particle charging and deposition during powder coating processes with coarse powder. J Phys D Appl Phys 41. doi:10.1088/0022–3727/41/19/195207
Pavlth AE, Orts W (2009) Edible films and coatings; why, what and how? In: Embuscado ME, Huber KC (eds) Edible films and coatings for food application. Springer, New York, pp. 1–24
Pérez-Masiá R, Lagaron JM, López-Rubio A (2014) Surfactant-aided electrospraying of low molecular weight carbohydrate polymers from aqueous solutions. Carbohydr Polym 101:249–255. doi:10.1016/j.carbpol.2013.09.032
Pérez-Masiá R, López-Nicolás R, Periago MJ, Ros G, Lagaron JM, López-Rubio A (2015) Encapsulation of folic acid in food hydrocolloids through nanospray drying and electrospraying for nutraceutical applications. Food Chem 168:124–133. doi:10.1016/j.foodchem.2014.07.051
Ratanatriwong P (2004) Sensory evaluation of electrostatically coated chips and powder physical property effects (size and food composition) on electrostatic coating improvement. PhD Thesis, The Ohio State University
Shah U, Zhu J, Zhang C, Senior JN (2006) Numerical investigation of coarse powder and air flow in an electrostatic powder coating process. Powder Technol 164:22–32
Sousa AMM, Souza HKS, Uknalis J, Liu S-C, Gonçalves MP, Liu L (2015) Electrospinning of agar/PVA aqueous solutions and its relation with rheological properties. Carbohydr Polym 115:348–355. doi:10.1016/j.carbpol.2014.08.074
Wilhelm O, Mädler L, Pratsinis SE (2003) Electrospray evaporation and deposition. J Aerosol Sci 34:815–836
Wu Y, Weller CL, Hamouz F, Cuppett SL, Schnepf M (2002) Development and application of multicomponent edible coatings and films: a review. 44
Xu Y, Hanna MA (2006) Electrospray encapsulation of water-soluble protein with polylactide: effects of formulations on morphology, encapsulation efficiency and release profile of particles. Int J Pharm 320:30–36
Xu Y, Skotak M, Hanna M (2006) Electrospray encapsulation of water-soluble protein with polylactide. I. Effects of formulations and process on morphology and particle size. J Microencaps 23:69–78
Zhang X, Kobayashi I, Uemura K, Nakajima M (2013) Direct observation and characterization of the generation of organic solvent droplets with and without triglyceride oil by electrospraying. Colloids Surf A Physicochem Eng Asp 436:937–943. doi:10.1016/j.colsurfa.2013.07.032
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Khan, M.K.I., Nazir, A. & Maan, A.A. Electrospraying: a Novel Technique for Efficient Coating of Foods. Food Eng Rev 9, 112–119 (2017). https://doi.org/10.1007/s12393-016-9150-6
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DOI: https://doi.org/10.1007/s12393-016-9150-6