Abstract
This research work was focused on evaluating the vacuum freezing (VF) of coffee extract under different process conditions as well as on its comparison with air freezing (AF) and contact freezing (CF). Regarding VF, extract concentration (10 to 40 oBrix) did not affect freezing time (for sufficiently high pressure drop rates), whereas extract layer thickness had significant impact, with 50% higher process times for samples arranged in 6-mm-thick layers in comparison with 4-mm-thick arrangements. Moreover, reduction of pressure drop rate (from 0.57 to 0.37 kPa s−1) caused an increase of up to 5 times of VF time. In comparison with AF and CF, VF led to significantly smaller freezing times along with higher mass losses (of 26–43% contrasting with 1–2% losses for AF and CF). This fact, allied to the extremely porous structure formed during VF, makes this method particularly interesting for soluble coffee production by freeze drying.
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References
Akyurt, M., Zaki, G., & Habeebullah, B. (2002). Freezing phenomena in ice – water systems. Energy Conversion and Management, 43(14), 1773–1789.
AOAC. (2000). Official methods of analysis (seventeenth ed.). Washington, DC: Association of Official Analytical Chemists.
Bai, Y., Rahman, M. S., Perera, C. O., Smith, B., & Melton, L. D. (2001). State diagram of apple slices: glass transition and freezing curves. Food Research International, 34(2-3), 89–95. https://doi.org/10.1016/S0963-9969(00)00128-9.
Ceballos, A. M., Giraldo, G. I., & Orrego, C. E. (2012). Effect of freezing rate on quality parameters of freeze dried soursop fruit pulp. Journal of Food Engineering, 111(2), 360–365. https://doi.org/10.1016/j.jfoodeng.2012.02.010.
Cheng, H. P., & Lin, C. T. (2007). The morphological visualization of the water in vacuum cooling and freezing process. Journal of Food Engineering, 78(2), 569–576. https://doi.org/10.1016/j.jfoodeng.2005.10.025.
Cheng, Q., & Sun, D.-W. (2006). Feasibility assessment of vacuum cooling of cooked pork ham with water compared to that without water and with air blast cooling. International Journal of Food Science and Technology, 41(8), 938–945. https://doi.org/10.1111/j.1365-2621.2005.01148.x.
Clarke, R. J., & Macrae, R. (1987). Coffee. In R. J. Clarke (Ed.), Drying (1st ed., pp. 147–197). New York: Elsevier.
Cogné, C., Nguyen, P. U., Lanoisellé, J. L., Van Hecke, E., & Clausse, D. (2013). Modeling heat and mass transfer during vacuum freezing of puree droplet. International Journal of Refrigeration, 36(4), 1319–1326. https://doi.org/10.1016/j.ijrefrig.2013.02.003.
Delgado, A. E., Zheng, L., & Sun, D.-W. (2009). Influence of ultrasound on freezing rate of immersion-frozen apples. Food and Bioprocess Technology, 2(3), 263–270. https://doi.org/10.1007/s11947-008-0111-9.
Drummond, L., Meinert, L., Koch, A. G., Würtz, J., Zhang, Z., & Sun, D.-W. (2015). Safety and quality evaluation of large meat joints cooled by a precommercial immersion vacuum cooling prototype. International Journal of Food Science and Technology, 50(9), 2066–2073. https://doi.org/10.1111/ijfs.12867.
Elia, A. M., & Barresi, A. A. (1998). Intensification of transfer fluxes and control of product properties in freeze-drying. Chemical Engineering and Processing, 37(5), 347–358.
Feng, C., Drummond, L., Zhang, Z., Sun, D.-W., & Wang, Q. (2012). Vacuum cooling of meat products: current state-of-the-art research advances. Critical Reviews in Food Science and Nutrition, 52(11), 1024–1038. https://doi.org/10.1080/10408398.2011.594186.
Ferguson, W. J., Lewis, R. W., & Tömösy, L. (1993). A finite element analysis of freeze-drying of a coffee sample. Computer Methods in Applied Mechanics and Engineering, 108(3-4), 341–352. https://doi.org/10.1016/0045-7825(93)90009-M.
Ghio, S., Barresi, A. A., & Rovero, G. (2000). A comparison of evaporative and conventional freezing prior to freeze-drying of fruits and vegetables. Food and Bioproducts Processing, 78(4), 187–192. https://doi.org/10.1205/09603080051065287.
Harnkarnsujarit, N., Kawai, K., & Suzuki, T. (2015). Effects of freezing temperature and water activity on microstructure, color, and protein conformation of freeze-dried bluefin tuna (Thunnus orientalis). Food and Bioprocess Technology, 8(4), 916–925. https://doi.org/10.1007/s11947-014-1460-1.
Hindmarsh, J. P., Russell, A. B., & Chen, X. D. (2004). Experimental and numerical analysis of the temperature transition of a freezing food solution droplet. Chemical Engineering Science, 59(12), 2503–2515. https://doi.org/10.1016/j.ces.2004.03.007.
Hindmarsh, J. P., Russell, A. B., & Chen, X. D. (2007). Fundamentals of the spray freezing of foods-microstructure of frozen droplets. Journal of Food Engineering, 78(1), 136–150. https://doi.org/10.1016/j.jfoodeng.2005.09.011.
Hottot, A., Vessot, S., & Andrieu, J. (2007). Freeze drying of pharmaceuticals in vials: Influence of freezing protocol and sample configuration on ice morphology and freeze-dried cake texture. Chemical Engineering and Processing, 46(7), 666–674. https://doi.org/10.1016/j.cep.2006.09.003.
Hua, T., Liu, B., & Zhang, H. (2010). Freeze-drying of pharmaceutical and food products (1st ed.). New York: CRC Press.
James, C., Purnell, G., & James, S. J. (2015). A review of novel and innovative food freezing technologies. Food and Bioprocess Technology, 8(8), 1616–1634. https://doi.org/10.1007/s11947-015-1542-8.
Kasper, J. C., & Friess, W. (2011). The freezing step in lyophilization: physico-chemical fundamentals, freezing methods and consequences on process performance and quality attributes of biopharmaceuticals. European Journal of Pharmaceutics and Biopharmaceutics, 78(2), 248–263. https://doi.org/10.1016/j.ejpb.2011.03.010.
Kiani, H., & Sun, D.-W. (2011). Water crystallization and its importance to freezing of foods: a review. Trends in Food Science and Technology, 22(8), 407–426. https://doi.org/10.1016/j.tifs.2011.04.011.
Kim, B. S., Shin, H. T., Lee, Y. P., & Jurng, J. (2001). Study on ice slurry production by water spray. International Journal of Refrigeration, 24(2), 176–184. https://doi.org/10.1016/S0140-7007(00)00013-X.
Kochs, M., Körber, C., Heschel, I., & Nunner, B. (1993). The influence of the freezing process on vapour transport during sublimation in vacuum-freeze-drying of macroscopic samples. International Journal of Heat and Mass Transfer, 36(7), 1727–1738. https://doi.org/10.1016/S0017-9310(05)80159-0.
MacLeod, C. S., McKittrick, J. A., Hindmarsh, J. P., Johns, M. L., & Wilson, D. I. (2006). Fundamentals of spray freezing of instant coffee. Journal of Food Engineering, 74(4), 451–461. https://doi.org/10.1016/j.jfoodeng.2005.03.034.
Mc Donald, K., & Sun, D.-W. (2001a). Pore size distribution and structure of a cooked beef product as affected by vacuum cooling. Journal of Food Process Engineering, 24(6), 381–403.
Mc Donald, K., & Sun, D.-W. (2001b). Effect of evacuation rate on the vacuum cooling process of a cooked beef product. Journal of Food Engineering, 48(3), 195–202. https://doi.org/10.1016/S0260-8774(00)00158-8.
Mc Donald, K., & Sun, D.-W. (2001c). Formation of pores and their effects in a cooked beef product on the efficiency of vacuum cooling. Journal of Food Engineering, 47, 175–183. https://doi.org/10.1016/S0260-8774(00)00111-4.
Moreno, F. L., Robles, C. M., Sarmiento, Z., Ruiz, Y., & Pardo, J. M. (2013). Effect of separation and thawing mode on block freeze-concentration of coffee brews. Food and Bioproducts Processing, 91(4), 396–402. https://doi.org/10.1016/j.fbp.2013.02.007.
Moreno, F. L., Hernández, E., Raventós, M., Robles, C., & Ruiz, Y. (2014a). A process to concentrate coffee extract by the integration of falling film and block freeze-concentration. Journal of Food Engineering, 128, 88–95. https://doi.org/10.1016/j.jfoodeng.2013.12.022.
Moreno, F. L., Raventós, M., Hernández, E., & Ruiz, Y. (2014b). Behaviour of falling-film freeze concentration of coffee extract. Journal of Food Engineering, 141, 20–26. https://doi.org/10.1016/j.jfoodeng.2014.05.012.
Muhr, A. H., Blanshard, J. M. V., & Sheard, S. J. (1986). Effects of polysaccharide stabilizers on the nucleation of ice. International Journal of Food Science and Technology, 21(5), 587–603. https://doi.org/10.1111/j.1365-2621.1986.tb00397.x.
Nakagawa, K., Hottot, A., Vessot, S., & Andrieu, J. (2011). Modeling of freezing step during vial freeze-drying of pharmaceuticals – influence of nucleation temperature on primary drying rate. Asia-Pacific Journal of Chemical Engineering, 6(2), 288–293. https://doi.org/10.1002/apj.424.
Oetjen, G. (1999). Freeze-Drying (3rd ed.). Weinheim: WILEY-VCH.
Otero, L., & Sanz, P. D. (2006). High-pressure-shift freezing: main factors implied in the phase transition time. Journal of Food Engineering, 72(4), 354–363. https://doi.org/10.1016/j.jfoodeng.2004.12.015.
Pardo, J. M., Suess, E., & Niranjan, K. (2002). An investigation into the relationship between freezing rate and mean ice crystal size for coffee extracts. Food and Bioproducts Processing, 80(3), 176–182. https://doi.org/10.1205/096030802760309197.
Rahman, M. S., Guizani, N., Al-Khaseibi, M., Ali Al-Hinai, S., Al-Maskri, S. S., & Al-Hamhami, K. (2002). Analysis of cooling curve to determine the end point of freezing. Food Hydrocolloids, 16(6), 653–659. https://doi.org/10.1016/S0268-005X(02)00031-0.
Satoh, I., Fushinobu, K., & Hashimoto, Y. (2002). Freezing of a water droplet due to evaporation - heat transfer dominating the evaporation-freezing phenomena and the effect of boiling on freezing characteristics. International Journal of Refrigeration, 25(2), 226–234. https://doi.org/10.1016/S0140-7007(01)00083-4.
Schmidt, F. C., & Laurindo, J. B. (2014). Alternative processing strategies to reduce the weight loss of cooked chicken breast fillets subjected to vacuum cooling. Journal of Food Engineering, 128, 10–16. https://doi.org/10.1016/j.jfoodeng.2013.12.006.
Schmidt, F. C., Aragão, G. M. F., & Laurindo, J. B. (2010). Integrated cooking and vacuum cooling of chicken breast cuts in a single vessel. Journal of Food Engineering, 100(2), 219–224. https://doi.org/10.1016/j.jfoodeng.2010.04.002.
Schmidt, F. C., Silva, A. C. C., Zanoelo, E., & Laurindo, J. B. (2018). Kinetics of vacuum and air cooling of chicken breasts arranged in stacks. Journal of Food Science and Technology, 16(6), 1–10. https://doi.org/10.1007/s13197-018-3146-6.
Searles, J. A., Carpenter, J. F., & Theodore, W. R. (2001). The ice nucleation temperature determines the primary drying rate of lyophilization for samples frozen on a temperature controlled shelf. Journal of Pharmaceutical Sciences, 90(7), 860–871.
Shin, H. T., Lee, Y. P., & Jurng, J. (2000). Spherical-shaped ice particle production by spraying water in a vacuum chamber. Applied Thermal Engineering, 20(5), 439–454. https://doi.org/10.1016/S1359-4311(99)00035-6.
Song, X., Guo, Z., Liu, B., & Jaganathan, G. K. (2018). Evaluation of bubbling vacuum cooling for the small-size cooked pork. Food and Bioprocess Technology, 11(4), 845–852. https://doi.org/10.1007/s11947-018-2058-9.
Sun, D.-W., & Wang, L. (2000). Heat transfer characteristics of cooked meats using different cooling methods. International Journal of Refrigeration, 23(7), 508–516. https://doi.org/10.1016/S0140-7007(99)00079-1.
Sun, D.-W., & Wang, L. (2004). Experimental investigation of performance of vacuum cooling for commercial large cooked meat joints. Journal of Food Engineering, 61(4), 527–532. https://doi.org/10.1016/S0260-8774(03)00220-6.
Wang, L., & Sun, D.-W. (2001). Rapid cooling of porous and moisture foods by using vacuum cooling technology. Trends in Food Science and Technology, 12(5-6), 174–184.
Wang, L., & Sun, D.-W. (2004). Effect of operating conditions of a vacuum cooler on cooling performance for large cooked meat joints. Journal of Food Engineering, 61(2), 231–240. https://doi.org/10.1016/S0260-8774(03)00095-5.
Zhang, Z., Drummond, L., & Sun, D.-W. (2013). Vacuum cooling in bulk of beef pieces of different sizes and shape - evaluation and comparison to conventional cooling methods. Journal of Food Engineering, 116(2), 581–587. https://doi.org/10.1016/j.jfoodeng.2012.12.036.
Zhang, Z., Gao, J., & Zhang, S. (2016). Heat and mass transfer of the droplet vacuum freezing process based on the diffusion-controlled evaporation and phase transition mechanism. Scientific Reports, 6(1), 1–8. https://doi.org/10.1038/srep35324.
Zhu, Z., Geng, Y., & Sun, D.-W. (2019). Effects of operation processes and conditions on enhancing performances of vacuum cooling of foods: a review. Trends in Food Science & Technology, 85, 67–77. https://doi.org/10.1016/j.tifs.2018.12.011.
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Silva, A.C.C., Schmidt, F.C. Vacuum Freezing of Coffee Extract Under Different Process Conditions. Food Bioprocess Technol 12, 1683–1695 (2019). https://doi.org/10.1007/s11947-019-02314-x
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DOI: https://doi.org/10.1007/s11947-019-02314-x