Loading...
4 results
Search Results
Now showing 1 - 4 of 4
- Heat inactivation of Listeria innocua in broth and parsley under non-isothermal conditionsPublication . Miller, Fátima A.; Ramos, Bárbara F.; Brandão, Teresa R. S.; Teixeira, Paula; Silva, Cristina L. M.
- Recovery of heat-injured Listeria innocuaPublication . Miller, Fátima A.; Brandão, Teresa R. S.; Teixeira, Paula; Silva, Cristina L. M.
- UV-C light processing of Cantaloupe melon juice: evaluation of the impact on microbiological, and some quality characteristics, during refrigerated storagePublication . Fundo, Joana F.; Miller, Fátima A.; Mandro, Gabriela F.; Tremarin, Andréia; Brandão, Teresa R. S.; Silva, Cristina L. M.UV-C light is a non-thermal technology with potential application in food industries. The objective was to assess UV-C radiation effect (13.44 W/m2) on microbiological decontamination and some quality characteristics of Cantaloupe melon juice, during refrigerated storage. Juice was inoculated with Listeria innocua (non-pathogenic surrogate of L. monocytogenes) and Alicyclobacillus acidoterrestris spores (spoilage indicators) used as indicators of the UV-C treatment efficacy. Total mesophylls and yeasts and molds were also enumerated. Results demonstrated that 5 min of exposure allowed 3.7 ± 0.3 log10 cycles reduction of L. innocua, while for A. acidoterrestris, 20 min were required to decrease 4.7 ± 0.1 log10 cycles. At the end of refrigerated storage for 13 days, UV-C treated juices retained color, total phenolics content and antioxidant activity, and yeast and molds did not grow. Since UV-C process was effective on microbial inactivation and allowed juice quality maintenance, it can be considered as a promising alternative to thermal pasteurization.
- On the assessment of an agar overlay method for the recovery of heat-injured Listeria innocua in parsleyPublication . Miller, Fátima A.; Ramos, Bárbara F.; Brandão, Teresa R. S.; Teixeira, Paula; Silva, Cristina L. M.