PPT-Applications of Ultraviolet Radiation in Foods

Ultraviolet light can be used to inactivate many types of organisms including viruses but it is currently known that UV light only works on surfaces or clear liquids such as water UV light radiation has been used for many years in pharmaceutical electronic and aquaculture industries as a disinfection medium . Overexposure to Ultraviolet Radiation (UV) causes skin and eye burns. UV exposure can be hazardous to your health and, in the long term, can contribute to premature skin aging and skin cancer. UV effe 
  
   
 
 

 
  
  
    



The desire to acquire a tan for fashion or cosmetic purpose Sunglasses radiation, Cancer Council Victoria recommends sunglasses that are:  close - fitting  wrap - around and cover as much of the eye area as possible  meet Australian Published by Navy Environmental Health Center 2510 Walmer Avenue Norfolk, Virginia 23513-2617 April 1992 ULTRAVIOLET RADIATION INTRODUCTION This chapter may serve as a guide to industrial hy Protection of Foods . Radiation. may be defined as the . “emission and propagation of energy through space or through a material medium”.. Because they destroy microorganisms without appreciably raising the temperature, the process is termed “. ULTRAVIOLET RADIATION SPECTRUM. UVA (Longwave Radiation). Range 320-400 nm. Erythrogenic activity is weak, however penetrates dermis. Responsible for development of slow. natural tan. Most drug-induced photosensitivity rxn occurs . Aziz AlSa’ad-Nasser Alabduljaleel-Abdulkareem AbuTaleb-Aziz AlOthman . 1.3 Vocabulary . Ultraviolet radiation:. rays of light that cannot be seen and that are a little bit shorter than the rays of violet light. Ultraviolet (UV) light falls in the range of the EM spectrum between visible light and X-rays. UV . light, which comes from the sun, is invisible to the human eye. .. It . makes black-light posters glow, and is responsible for summer tans — and sunburns. Radiation. may be defined as the . “emission and propagation of energy through space or through a material medium”.. Because they destroy microorganisms without appreciably raising the temperature, the process is termed “.  . Radiation may be defined as the emission and propagation of energy through space or through a material medium. . Radiation in Food Preservation:. 1-Nonionizing . radiations. Ultraviolet Light. Radiation refers to the process that is concerned with the passage of energy between places through space. . It is the radiation generated by sun that . regulates the temperature of earth. . . CLASSIFICATION OF RADIATION: ionizing or non-ionizing types. . Bold entries indicate new or changed listings in the Fifteenth Report on Carcinogens. Known To Be Human Carcinogens Aatoxins Alcoholic Beverage Consumption 4-Aminobiphenyl Aristolochic Acids Ars radiaton. , through different types of filters. . UV & . Sunblock. Measuring and comparing the level of ultraviolet radiation, through different types of filters.. Objective. The purpose of this activity is to study the level of ultraviolet radiation resulting from the intervention of a sunlight beam through different types of filters, creating a hypothesis and proceeding to test it using the . Sunscreen. Procedure.  . Buy . a package of UV beads that change color. . 2. You can use a pipe cleaner to make a bracelet, if you wish. . 3. The beads are still white on the inside. . 4. Check the effectiveness of your sunscreen by covering some of the pearls and then placing them in the sun. If they change color, you can add a little more sunscreen.