Method for preparing pectin through double-effect combined extraction technology
A technology of combined extraction and pectin, which is applied in the field of pectin preparation by double-effect combined extraction method, can solve the problems of reducing the degree of gelation and esterification of pectin, the inability to extract pectin, and long production cycle, etc., so as to improve production Efficiency and product yield, overcoming the effect of long production cycle and simple production control
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[0019] A kind of double-effect joint extraction method prepares pectin, comprises the following steps:
[0020] (1) Crush one or more of fresh orange peel, lemon peel, and apple peel, pass through a 60-mesh sieve, mix the obtained raw materials with 8 times its weight in warm water at 60°C, and soak for 60 minutes;
[0021] (2) Adding hydrochloric acid to the solution, adjusting the pH value to 1.2, and extracting pectin, the hypochlorous acid generated by hydrochloric acid during the reaction decolorizes the extracted pectin;
[0022] (3) While performing step (2), add 10% of the raw material weight cation exchange resin to the solution to fully extract the pectin in the raw material;
[0023] (4) After the extraction reaction is completed, add sodium carbonate to adjust the pH to 6, filter to remove residue, and vacuum-concentrate the filtrate to obtain a concentrate;
[0024] (5) Add 1 times the volume of absolute ethanol to the concentrated solution, centrifuge after 2 ho...
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