What is it about?
Titanium dioxide–UVC photocatalysis (TUVP), a nonthermal technique capable of microbial inactivation via generation of hydroxyl radicals, was used to decontaminate orange surfaces. Levels of spot-inoculated Escherichia coli O157:H7 (initial level of 7.0 log CFU/cm^2) on oranges (12 cm^2) were reduced by 4.3 log CFU/ml when treated with TUVP (17.2 mW/cm^2).
Featured Image
Why is it important?
Nonpasteurized orange juice is manufactured by squeezing juice from fruit without peel removal. Fruit surfaces may carry pathogenic microorganisms that can contaminate squeezed juice.
Perspectives
Titanium dioxide–UVC photocatalysis (TUVP) disinfection of orange surfaces is an innovative technique for inactivation of pathogenic bacteria. TUVP surface disinfection before HHP treatment of freshly squeezed orange juice increased the inactivation of E. coli O157:H7 in the final juice product. I hope the TUVP non-thermal disinfection process can be used as a substitute for chlorine disinfection.
Jiyong Park
Yonsei University
Read the Original
This page is a summary of: Inactivation of Escherichia coli O157:H7 on Orange Fruit Surfaces and in Juice Using Photocatalysis and High Hydrostatic Pressure, Journal of Food Protection, June 2015, International Association for Food Protection,
DOI: 10.4315/0362-028x.jfp-14-522.
You can read the full text:
Contributors
The following have contributed to this page
