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- W2891396177 abstract "Food powders provide convenience and nutritional value for consumers while also providing manufacturers a manageable food form with a long shelf life and easy transportation. Food powders, however, carry food safety risks because of their high nutritional value, which has led to food out breaks in the past. Due to the high nutritional and aroma requirements of food powders,thermal decontamination methods are not suitable. Furthermore, it is not easy to remove the chemical residue because of the special physical properties of dry food powder. Pulsed light (PL) technology effectively inactivate the spoilage microorganisms while maintaining the quality of the products. In the present study, the efficacy of PL inactivation on Bacillus subtilis and investigated the molds and yeast and total aerobic counts (TAC) has been evaluated on wheat flour and black pepper. Wheat flour and black pepper were inoculated with B.subtilis and treated with PL (3pulses/s) at distances of 6 cm and 9 cm from the quartz window of the PL system. Wheat flour samples were treated for15 s, 30 s, 60 s and 90 s. For black pepper, reduced times were viable and therefore the times were 5 s, 10 s, 15 s and 30 s. Natural flora were used in the molds and yeast counts and TAC. All the trials were conducted at the room temperatures(25 °C), and the temperature was monitored during PL treatment. The quality parameters assessed were changes in color and water activity. Results reveal significant reduction (pBacillus subtilis is as high as 4.1 ±0.2 log CFU/g on wheat flour and 4.3 ± 0.1 log CFU/g on black pepper after 90 sand 30 s, respectively, with a distance from quartz window to sample at 6 cm.Likewise, temperature increased significantly (p0.05) observed in color and water activity. In conclusion, PL may be an effective and practical method for enhancing the safety of food powder and dry ingredients while preserving the food quality, which would have apositive impact on food safety and public health. ( en )" @default.
- W2891396177 created "2018-09-27" @default.
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- W2891396177 date "2013-01-01" @default.
- W2891396177 modified "2023-09-27" @default.
- W2891396177 title "Effects of Pulsed Light on Microbial Decontamination of Dry Food Powder and Food Processing Aids" @default.
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