Temperature measurement and analysis of postharvest agricultural products associated with thermal disinfestations
Keywords:
hot air, hot water, fruit, postharvest treatment, heating rates, temperature measurement, thermal disinfestationAbstract
Hot air and hot water treatments are practical, environmentally-friendly and non-chemical heating methods, which are widely used for postharvest insect control and quality preservation in agricultural products. Taking apple and pear as representative fruits, this study mainly analyzed influences of their thermal properties, diameter, and medium speed on the heating rates of fruits through their real-time measured temperatures at surface and center. Based on the reported thermal death kinetic models of the target codling moth, the minimum heating time was estimated to achieve 100% insect mortality. The results showed that the heating rates in fruits decreased gradually with the increasing depth from the surface to the center. With increasing heating time, the heating rate became small. The apple was heated faster than the pear. Hot water was more effective than hot air in treating fruits. Increasing hot air speed increased the heating rate but increasing water circulating speed had no clear effects on the heating rate. Based on the measured temperature-time history of the fruit center, the minimum heating time could be effectively determined for codling moth control through the estimated total equivalent thermal lethal time. The results could provide reliable validation data for the computer simulation and a scientific basis to improve the hot air and hot water treatments.References
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[28] Yang X, Guan W, Chen D. The physiological and biochemical effect of heat treatment on insect and its research and application in the imported fruit quarantine treatment. Journal of Plant Quarantine, 2007; 21(3): 180-182. (in Chinese)
[2] Li X F, Wang W F, Yu X, Huang Y Y, Cao J. The analysis of fruits quarantine and pests epidemic situation and the prevention countermeasures of imported fruit for Guangdong Foshan seaport. Journal of Plant Quarantine, 2012; 26(5): 69-75. (in Chinese)
[3] Guo W, Wu X, Zhu X, Wang S. Temperature-dependent permittivities of chestnut and chestnut weevil from 10 to 4500 MHz. Biosystems Engineering, 2011; 110(3): 340- 347. (in Chinese with English abstract)
[4] Liu J, Sui Y, Wisniewski M, Droby S, Tian S P, Norelli J, et al. Effect of heat treatment on inhibition of Monilinia fructicola and induction of disease resistance in peach fruit. Postharvest Biology and Technology, 2012; 65: 61-68.
[5] Vicente A R, Martinez G A, Chaves A R, Civello P M. Effect of heat treatment on strawberry fruit damage and oxidative metabolism during storage. Postharvest Biology and Technology, 2006; 40(2): 116-122.
[6] Tian W N, Zeng K F. The effect of heat treatment on storage characteristics of postharvest fruits and vegetables. Science and Technology of Food Industry, 2007; 200(12): 190-192. (in Chinese with English abstract)
[7] Zhang H, Zhao L, Han Y. Application of heat treatment on storage and preservation of fruit and vegetable. Journal of Preservation and Processing, 2005; 5(2): 13-15. (in Chinese with English abstract)
[8] Liu Z Z, Xu L, Wang Q G. Effect of hot air treatment on postharvest quality of Zhonghuashou peach. Transactions of the CSAE, 2010; 26(1): 375-379. (in Chinese with English abstract)
[9] Wen Y, Feng J, Ren X. Effect of hot air treatment on softening and quality of postharvest Li Jujube fruits during cold storage. Acta Agriculturae Boreali-occidentalis Sinica, 2007; 16(6): 133-136. (in Chinese with English abstract)
[10] Wen Y Q, Feng J Y, Ren X L. Mechanism for prolonging cold storage life of Li jujube fruit by heat air treatment. Transactions of the CSAE, 2007; 123(12): 24-29. (in Chinese with English abstract)
[11] Shao X F, Tu K, Wang H, Chen Y Y, Jing W, Chen L. Effects of hot air treatment on quality and ripeness characteristics of Gala apple fruits. Food Science, 2007; 331(6): 351-355. (in Chinese with English abstract)
[12] Feng X Q, Hansen J D, Biasi B, Tang J M, Mitcham E J. Use of hot water treatment to control codling moths in harvested California 'Bing' sweet cherries. Postharvest Biology and Technology, 2004; 31(1): 41-49.
[13] Li M, Hu M J, Gao Z Y, Yang F Z. Study on effects of different heat treatments on the control of postharvest diseases and storability of mango. Journal of Fruit Science, 2010; 27(1): 88-92. (in Chinese with English abstract)
[14] Zhang H Y, Wang L, Jiang S, Dong Y, Zhang H. Control of postharvest disease of strawberries by hot-water treatments and its effects on the quality in storage period. Transactions of the CSAE, 2007; 119(8): 270-273. (in Chinese with English abstract)
[15] Forney C F. Hot-water dips extend the shelf-life of fresh broccoli. Hortscience, 1995; 30(5): 1054-1057.
[16] Chen L, Zhu S J, Zhu H, Huang S P, Huang T. Efficacy and mechanism of hot water treatment on relieving postharvest diseases of banana. Transactions of the CSAE, 2006; 22(8): 224-229. (in Chinese with English abstract)
[17] Guan J F, Peng Y H. Effects of hot water treatment on the quality and physiology of strawberry fruits during storage. Journal of Basic Science and Engineering, 2000; 8(2): 143-147. (in Chinese with English abstract)
[18] Li P X, Wang G X, Fan J S. Effect of hot-water treatment on quality of ’Dongzao’ Jujube fruit during shelf-life. Journal of Northwest Forestry University, 2004; 19(2): 119-121. (in Chinese with English abstract)
[19] Shellie K C, Mangan, R L, Ingle S J. Tolerance of grapefruit and Mexican fruit fly larvae to heated controlled atmosphere. Postharvest Biology and Technology, 1997; 10(2): 179-186.
[20] Kerbel E L, Mitchell F G, Mayer G. Effect of postharvest heat treatments for insect control on the quality and market life of avocados. HortScience, 1987; 22(1): 92-94.
[21] Smith K J, AY-Yee M. Response of ‘Royal Gala’ apple to hot water treatment for insect control. Postharvest Biology and Technology, 2000; 19(2): 111-122.
[22] Wang S, Tang J, Cavalieri R P. Modeling fruit internal heating rates for hot air and hot water treatments. Postharvest Biology and Technology, 2001; 22(3): 257-270.
[23] Hansen J D, Wang S, Tang J. A cumulated lethal time model to evaluate efficacy of heat treatments for codling moth Cydia pomonella (L.) (Lepidoptera: Tortricidae) in cherries. Postharvest Biology and Technology , 2004; 33(3): 309-317.
[24] Wang S, Ikediala J N, Tang J, Hansen J D. Thermal death kinetics and heating rate effects forfifth-instar codling moths (Cydia pomonella (L.)). Journal of Stored Products Research, 2002; 38(5): 441-453.
[25] Incropera F P, DeWitt D P. Fundamentals of Heat Transfer. John Wiley & Sons, New York. 1996, 819pp.
[26] Birla S L, Wang S, Tang J. Computer simulation of radio frequency heating of model fruit immersed in water. Journal of Food Engineering, 2008; 84(2): 270-280.
[27] Tang J, Ikediala J N, Wang S, Hansen J D, Cavalieri R P. High-temperature-short-time. thermal quarantine methods. Postharvest Biology and Technology , 2000; 21(1): 129-145.
[28] Yang X, Guan W, Chen D. The physiological and biochemical effect of heat treatment on insect and its research and application in the imported fruit quarantine treatment. Journal of Plant Quarantine, 2007; 21(3): 180-182. (in Chinese)
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Published
2013-06-18
How to Cite
Rongjun, Y., Zhi, H., Rui, L., Hankun, Z., Bo, L., & Wang, S. (2013). Temperature measurement and analysis of postharvest agricultural products associated with thermal disinfestations. International Journal of Agricultural and Biological Engineering, 6(2), 87–94. Retrieved from https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/797
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Agro-product and Food Processing Systems
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