کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4368250 | 1616697 | 2009 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Inactivation of Alicyclobacillus acidoterrestris spores in apple juice by supercritical carbon dioxide Inactivation of Alicyclobacillus acidoterrestris spores in apple juice by supercritical carbon dioxide](/preview/png/4368250.png)
We investigated the lethal effect of supercritical carbon dioxide (SC-CO2; temperature: 65, 70 °C, pressure: 80, 100, 120 bar, time: 10–40 min) on Alicyclobacillus acidoterrestris spores (106–107 spores/ml) suspended in apple juice. A. acidoterrestris spores were completely inactivated by SC-CO2 to undetectable levels in above 65 °C, 100 bar for 40 min and 70 °C, 80 bar for 30 min. The SC-CO2 did not affect (p > 0.05) the pH and ˚Brix of apple juice. In electron microscopic observations, the surface and internal morphological changes and extraction of intracellular materials of the treated spores were observed. Our results indicate that SC-CO2 can effectively kill A. acidoterrestris spores in apple juice with no changes to the quality of the juice and also provides a complementary understanding of inactivation action of SC-CO2.
Journal: International Journal of Food Microbiology - Volume 136, Issue 1, 30 November 2009, Pages 95–100