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Pectin has good emulsification, thickening, stabilization, and gelling effects, and has been widely used in the food, textile, printing and dyeing, tobacco, metallurgy, and other industries. Additionally, pectin possesses antibacterial, hemostatic, swelling, detoxification, hypolipidemic, anti-radiation, and other beneficial effects, making it an excellent matrix for pharmaceutical preparations. Pectin is categorized into two types: water-soluble and water-insoluble. Water-insoluble pectin can dissolve in sodium hexametaphosphate solution or inorganic acid solution. Protopectin, found in natural pectin, is insoluble in water but can be hydrolyzed into water-soluble pectin through chemical reagents such as acids, alkalis, and salts. Currently, the main extraction methods commonly used globally include acid extraction and ion exchange resin methods.
The tube-in-tube sterilizing machine is used for heating and sterilizing high-viscosity products like fruit jams and concentrated juices. For instance, it is suitable for sterilizing products such as tomato paste, mango paste, strawberry paste, and apple paste.
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