Preparation method of water-insoluble tamarind fruit dietary fiber

A preparation method of water-insoluble tamarind fruit dietary fibers comprises the following steps: shelling tamarind fruits, drawing, cleaning, adding water into tamarind fruits, mixing, softening and stirring, so that tamarind fruit pulp is separated from tamarind fruit seeds and is fused with water; separating tamarind pulp from tamarind seeds to obtain tamarind pulp; carrying out superfine grinding on the tamarind pulp, and then separating most of tissue fibers in the tamarind pulp from the tamarind pulp with small tissue fibers; drying a large part of separated tissue fibers, cooling, and crushing to 100-120 meshes; the separated tamarind pulp with small tissue fibers is separated again, and a soluble liquid part and an insoluble solid part are separated out; and drying the separated solid part, and crushing to 100-120 meshes to obtain the water-insoluble tamarind fruit dietary fiber. According to the method, the non-water-soluble tamarind fruit dietary fibers in the tamarind fruit pulp can be fully ext