پالس های نوری

پالس های نوری

اسلاید 1: pulsed light1

اسلاید 2: 2

اسلاید 3: Inactivation of Listeria innocua on packaged meat products by pulsed lightObjectivethe applicability of PL for disinfection of packaged meat productsMaterials and methodspackaged frankfurter sausages,sliced boiled ham and chicken cold cuts20 μl of bacterial suspension was then individually sprayed on the samples Discharge voltages of 1.5, 2.0, 2.5, 3.0 kV were applied. The samples were placed under the flash lamp at a distance of 5 cm which resulted in fluences ranging from 0.35 to 3.6J/cm² per light flash on the packaging surface. 3

اسلاید 4: Inactivation of Listeria innocua on packaged meat products by pulsed lightResultIt was shown that PL treatments allow reductions of L.innocua by about 1 log on the surface of sliced boiled ham and chicken cold cuts while 3–4 log can be achieved on frankfurter sausages. However, in both cases, significant bacterial inactivation by about 2–3 log (frankfurter sausages) and about 0.8 log (ham, chicken cold cuts) can be provided with a comparably low fluence of 0.35 J/cm², which is more than 20 times beneath the limit permitted by the FDA.The initial count reduction was maintained over 12 days of chilled storage (5 °C) and no impact on product color and appearance was observed. 4

اسلاید 5: Your Subtopics Go Here5

اسلاید 6: Effect of Pulsed Light treatment on β-lactoglobulin immunoreactivityObjectiveThis study investigates the effects of different Pulsed Light (PL) treatments on the immunoreactivity and digestibility of β-lactoglobulin (β-lg), one of the main allergens in milkMaterials and methodsβ-lactoglobulin lyophilized powder (L0130) from bovine milkProtein solutions of 2000 μg/mL of β-lactoglobulin (β-lg) were prepared with PH (4.6 / 6.8/ 7.4)300 μL of the different β-lg solutions were poured in a quartz cuvette and were placed at 6 cm from the upper Xenon lampSamples received four different total fluences: 3.85 J/cm2 (7pulses), 8.25 J/cm2 (15 pulses), 12.1 J/cm2 (22 pulses) and 15.95 J/cm2 (29 pulses). 6

اسلاید 7: Effect of Pulsed Light treatment on β-lactoglobulin immunoreactivityResultfindings show that PL significantly decreases the recognition of β-lg by both IgG and IgE, up to an average 85% and 45% of reduction, respectively, compared to the untreated protein, especially when the protein is treated in a solution at pH 6.8. 7

اسلاید 8: 8