Tea leaf dietary fiber powder and preparation method thereof

The invention belongs to the field of meals, and particularly relates to tea leaf dietary fiber powder and a preparation method thereof. The mass percentage of dietary fibers in the tea leaf dietary fiber powder is 50-69%, and the mass percentage of protein is 15-25%. The content of the dietary fibers in the tea leaf dietary fiber powder prepared by the method disclosed by the invention reaches 50-69%, and the increase range is about 50-70%; but the protein content is basically kept unchanged. The dietary fiber content of the tea leaf dietary fiber powder is far higher than that (4.5%) of daily foods namely cereals, that (20.2%) of beans and that (2.7%) of vegetables, is also higher than that (7.6%) of corn, that (28.2%) of dried soybeans, that (12.6%) of whole wheat flour, that (42.3%) ofwheat bran, that (10.3%) of oatmeal that of other foods, which are regarded as high-fiber foods by people daily; and the protein content is apparently higher than that (7.2%) of rice and that (10.7%)of wheat flour, which are