84results about How to "Effective decolorization" patented technology

The invention belongs to the technical field of pectin extraction, and particularly relates to a high-efficiency pectin extraction process, which comprises the steps of (1) preprocessing pericarp; (2)adding dry ice into the pericarp, stirring and mixing, putting an obtained mixture into a liquid nitrogen system, then standing the mixture of the dry ice and the pericarp at 20 to 40 DEG C, preserving the pericarp after the dry ice is sublimated; (3) adding an acid solution into the pericarp, regulating the pH to be 1.5 to 2.0, raising the temperature to 90 to 100 DEG C, performing heat preservation for 1 to 2h, filtering while the solution is hot to obtain pectin extract liquor; after cooling to 50 DEG C, adding amylase, stirring and mixing for 20 to 30min, then raising the temperature to 80 DEG C for enzyme deactivation; adding a decolorising agent, performing heat preservation for 20 to 30min, filtering to obtain discolored filter liquor; (4) concentrating the discolored filter liquor; (5) performing spray drying to obtain pectin powder. According to the high-efficiency pectin extraction process, the conventional breaking and squeezing extraction method is abandoned, the extraction of the pectin is facilitated; the method not only improves the extraction efficiency of the pectin, but also reduces the content of impurity in the pectin extract liquor.