Ultraviolet (UV) reactors used for disinfecting water and wastewater must be validated and monitored over time. The validation process requires understanding the photochemical properties of the pathogens of concern and the challenge microorganisms used to represent them. Specifically for polychromatic UV systems, the organisms' dose responses to UV light and their sensitivity across the UV spec...

This chapter presents and discusses information on the application of ultraviolet light (UV) technology in continuous and pulse modes for processing whole and fresh cut fruits, and fruit juices. It starts with a brief overview of the fundamentals of UV light generation and propagation in solid and fluid products and followed by the review of available UV sources. Recent reports are reviewed to ...

Abstract Ultrasonic sterilization is gaining progressively more attention for microbial without the drawbacks of heat, UV radiation, and chemical treatments. It crucial to understand ultrasonic cavitation in heterogeneous media order disable microorganisms efficiently by ultrasound. In this study, effect initial bacterial concentration on inactivation Escherichia coli was investigated over a wi...

A broad spectrum of possible functions of Cu-AOs, ranging from cell adhesion, cell growth regulation, to clinical applications are described. Their action may be related to the control of H 2 O 2 levels as they are reported to be inactivated by the same H 2 O 2 they produce, upon prolonged exposure to amine in excess over oxygen. This was demonstrated in pea seedling and pig kidney amine oxidas...

Phosphorus (P) plays an important role in eutrophication and algal adaptation to environmental stresses; therefore, a better understanding of the impact P is essential control cyanobacterial bloom. In this study, Microcystis aeruginosa treated with 5 h ambient irradiation culture medium different availabilities dissolved organic (DOP) matter (DOM) explore physiological responses. Compared photo...

Among spices, onion flakes (OF) and black pepper (BP) are commonly used ingredients in domestic cooking; however, spices have been shown to be highly contaminated with pathogenic bacteria bacterial spores. A novel method applying a treatments of Ozone Ultraviolet (UV, 255nm) Infra-red (IR) light different combinations was assessed for its efficiency decontaminating OF BP. In this study, untreat...