FSC 325 EXAM 3 PE (SOLVED!)

Falling film evaporators are the only type that are used in the food industry due to their sanitary design. correct answers F Pasteurization is a heating process that ensures the destruction of all vegetative cells and spores of pathogenic microorganisms. correct answers F The thermal center of a container filled with peas in brine will be lower in the can than the thermal center for a can of solid, white tuna. correct answers T Probiotics are microorganisms which are believed to have beneficial effects on the host. correct answers T Thermal Conductivity is a measure of the rate of temperature change during a heating or cooling process. correct answers F A calandria or tube chest used in an evaporation system is just a large shell and tube heat exchanger. correct answers T If the D-value for the destruction of a spoilage bacteria is longer than the D-value for destruction of the most heat resistant pathogen at a given temperature, then a 12D process for the pathogen will result in less than a 12D destruction of the spoilage bacteria. correct answers T In a falling film evaporator, the vapor escapes from the top of the tube chest. correct answers F The D-values of microorganisms are generally larger than the D-values for destruction of nutrients and sensory characteristics. correct answers F Blanching is a steam or water heating process that may be used to inactivate polyphenoloxidase thus preventing enzymatic browning in cut surfaces of some fruits and vegetables. correct answers T Cellulases can be use to tenderize vegetables and nut shells. correct answers T Molds (fungi) used for the production of fermented foods like cheese or tempeh may produce proteolytic and lipolytic enzymes. correct answers T Bacteriocins are anti-microbial compounds that are produced by bacteria and are considered a natural product when included in a food product, which results in what many consider a clean label. correct answers T Proteases like chymosin are valuable to the food industry because they have a very specific target resulting little excess breakdown of the product they are used in. correct answers T