جستجوی مقالات مرتبط با کلیدواژه « فرآوری » در نشریات گروه « پیراپزشکی »
تکرار جستجوی کلیدواژه «فرآوری» در نشریات گروه «بهداشت و درمان»-
One of the modern techniques used in ultrasound is composed of sound waves with frequency beyond the limit of human hearing. Ultrasound techniques are relatively cheap, simple and energy saving. Low-intensity ultrasound is a non-destructive technique that provides information about physicochemical properties, such as composition, structure, physical state and flow rate. High-intensity ultrasound is used to alter, either physically or chemically, the properties of foods, for example to generate emulsions, disrupt cells, promote chemical reactions, inactivation microorganisms, tenderize meat and modify crystallization processes. Ultrasonic waves at high intensity alone can destroy the cell walls of microbes but when it is combined with a rapid thermal process for sterilizing foods to improve. Ultrasonic processing is still in its infancy and requires a great deal of future research in order to develop the technology on an industrial scale, and to more fully elucidate the effect of ultrasound on the properties of foods.
Keywords: Ultrasound, Extraction, Processing, Food, Microbial inactivation} -
The first laboratory use of plasma in the food industry was to study the possibility of inactivating undesirable microorganisms from the surface of heat-sensitive foods such as fresh fruits and vegetables, meat, and eggs. Plasma treatment can be considered as a potential alternative to chemicals (eg chlorine treatment) or physical methods (eg high pressure, pulsed electric field, irradiation) for surface disinfection. Advantages of using plasma processes include high efficiency at low temperatures (generally <70 ° C), instantaneous production, low impact on the internal matrix of the product, no need for water or solvent and no waste left. Plasma processing can also have several benefits, such as cleaning surfaces, increasing surface energy, improving moisture, increasing printing and dyeability, and creating very thin coatings on films used in the packaging industry.
Keywords: Plasma, food industry, processing}
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