کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4560080 | 1330487 | 2009 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Comparison of aluminum thermal-death-time disks with a pilot-scale pasteurizer on the thermal inactivation of Escherichia coli K12 in apple cider
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش تغذیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This study was conducted to compare thermal inactivation kinetics obtained using a pilot-scale pasteurizer and a bench-scale processing system. Pilot-scale pasteurizers are useful for product development, but comparisons on thermal inactivation kinetics with smaller scale systems are lacking. Using an Armfield pilot-scale pasteurizer and aluminum thermal-death-time (TDT) disks, the D-values and z-values of Escherichia coli K12 in apple cider were determined in the temperature range of 54-62 °C. Come-up times to 58 °C were also measured and were 35 and 61 s for the TDT disks and pasteurizer, respectively. The D-values from the TDT disks were 9.66, 4.01, 1.44 and 0.44 min at temperatures of 54, 56, 58, and 60 °C, respectively. The D-values from the pasteurizer were 3.48, 1.22, 0.10 and 0.05 min at temperatures of 56, 58, 60, and 62 °C, respectively. The z-values from the TDT disks and the pasteurizer were 4.68 and 3.60 °C, respectively. There was no significant (P > 0.05) difference in the D-values of the TDT disks and pasteurizer at 56 and 58 °C, while there was a significant (P < 0.05) difference in the D-value at 60 °C and in the z-value. This study revealed that the thermal inactivation kinetics obtained using bench scale TDT disks and an Armfield pilot-scale pasteurizer under certain conditions are similar. However, based on ease of use and other factors, TDT disks are preferable for acquiring thermal inactivation kinetics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Control - Volume 20, Issue 11, November 2009, Pages 1053-1057
Journal: Food Control - Volume 20, Issue 11, November 2009, Pages 1053-1057
نویسندگان
Hyun-Gyun Yuk, David J. Geveke, Howard Q. Zhang, Tony Z. Jin,