Pectin is a natural compound polysaccharide polymer compound that has a wide range of uses in the food, pharmaceutical and household chemical industries. The specific operation method for extracting pectin from watermelon rind is described as follows:
1. Steam press. Fresh, non-toxic, non-corrosive watermelon rind is used to remove soil and put it in a steamer cage. After steaming for 30-40 minutes, the watermelon rind is steamed, softened, precipitated, and dripped appropriately (to kill live cells). Pectinase). It is then squeezed in a bag to remove moisture from the tissue cells.
2. Hydrolysis filtration. Put the dried ingredients into a corrosion-resistant container, add water 3-4 times, add acid to a pH of about 2, heat and boil, keep for a certain period of time, squeeze with a cloth bag and collect the filtrate. The filter residue was further added with water twice and the hydrolysis filtration was repeated once, and the two filtrates were combined. When the initial hydrolysis, we must carefully grasp the relationship between acidity, temperature and time, acidity, high temperature, then the time is short, the temperature is low, the acidity is small for a long time.
3. Decolorize and concentrate. 0.3%-0.5% of activated carbon was added to the filtrate and kept at 55-60°C. After decolorization for 30 minutes, it was concentrated to about 3% of the original volume.
4. Alcohol processing. A 90% ethanol solution is first added to the concentrate, and the amount added is 1 or more of the concentrated volume. After the addition, the pectin flocculated, and after a while, the flocculated pectin was placed in a fine cloth bag, the liquid was squeezed and the ethanol in the liquid was recovered. The squeezed pectin was then washed with a 95% ethanol solution (1 times the amount of pectin). Wait for a while and squeeze out the ethanol solution.
5. Crush the package. The solid pectin was placed in an enamel pan and baked at 65-75°C. Bake until the moisture is about 8%, dry, grind and grind and pass through a 60 mesh sieve. After a batch of tests, different grades of products are rationally allocated according to the regulations, and then sealed and packaged in polyethylene plastic bags.
Sweetener is a food additive that provides a sweet taste like that of sugar while containing significantly less food energy. Some sugar substitutes are natural and some are synthetic. It allows you to enjoy sweet tasting foods without the extra kilojoules from sugar. It can be beneficial for anyone trying to lose weight and control their sugar intake. Sweetener also does not contribute to tooth decay, as they are not broken down to acid by bacteria in dental plaque.
Food Sweeteners
Natural Sweeteners,Xylitol Sweetener,Healthy Sweeteners,Food Sweeteners
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