Method for preparing mashed purple sweet potato solid beverage

Abstract

The invention discloses a method for preparing mashed purple sweet potato solid beverage. The method comprises the following steps of: pretreating purple sweet potatoes; cooking the pretreated purple sweet potatoes; preparing the cooked purple sweet potatoes into mashed potatoes; performing saccharification and glue milling on the mashed potatoes; and packaging to obtain a mashed purple sweet potato solid beverage product. In the method, the purple sweet potatoes are taken as a raw material and treated by a specific process so that the starch content of the raw material can be reduced, the soluble solid content, in particular the small-molecule sugar content of the raw material is increased, the solubility of the mashed purple sweet potatoes is enhanced and reconstitution performance is improved; and moreover, the method has the advantages of simple process flow, low requirement on equipment and capability of keeping constituents such as anthocyanin and the like of the purple sweet potatoes to the maximum extent, keeping the bright color of a prepared product and the inherent purple color of the raw material and making the product have high reconstitution performance and deliciousflavor.

Description

technical field [0001] The invention belongs to the technical field of intensive processing of agricultural products purple sweet potatoes, and in particular relates to a preparation method of purple sweet potato puree solid drink. Background technique [0002] Purple sweet potato, referred to as "purple sweet potato", also known as "black potato", belongs to the annual herbaceous plant of Convolvulaceae. In addition to the nutrients of ordinary sweet potatoes and the functions of softening blood vessels, lowering blood pressure, moisturizing the intestines, and laxatives, it is also rich in selenium, anthocyanins and other substances that enhance the immune function of the human body. Regular consumption of purple sweet potatoes can significantly enhance human immunity, and has high preventive effects on digestive tract, cardiovascular and cerebrovascular diseases. The anti-cancer and anti-cancer ability of purple sweet potatoes ranks first among all kinds of foods. [000...

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to solve the problems in the above-mentioned prior art that the brewable beverage made from purple sweet potato has poor solubility due to high starch content, great loss of color and nutrients, or complicated process and high requirements for equipment, and provides A preparation method of purple sweet potato puree solid beverage, the method uses purple sweet potato as raw material, through specific process treatment, reduces the starch content in the raw material, increases the content of soluble solids, especially the content of small molecule sugar, and improves the purple sweet potato puree Solubility, so as to improve the brewability; and the process is simple, low equipment requirements, and at the same time, the anthocyanin and other components of purple sweet potato can be retained to the greatest extent, so that the color of the obtained product is bright and the inherent purple of the raw material, and the brewability and flavor