Cold fresh pulp preparation method

Abstract

The present invention relates to a cold fresh pulp preparation method. The technical problem solved by the present invention is to reduce oxidation during a fresh keeping process, improve pulp freshness and improve original taste. A super micron fiber fruit dissolving technology is adopted, such that the pulp is instantly dissolved in water, layering and precipitation are not easily generated, and nutrition is easily absorbed by human body. The preparation method comprises the following steps: 1) preparing a material; 2) adopting a colloid mill to prepare a coarse pulp; 3) preparing fruit dissolving fibers, wherein the coarse pulp is grinded into fruit dissolving fibers through a super high pressure homogenizer, a particle size is less than or equal to 800 nm, super high pressure homogenizer working pressure is 60-80 Mpa, and a grinding temperature is controlled to less than or equal to 20 DEG C; 4) carrying out vacuum liquid state sub-packaging; 5) carrying out super high pressure low temperature sterilization; 6) carrying out low temperature quick partial-freezing, wherein the sterilized pulp is placed into a low temperature quick partial-freezing machine, a freezing temperature is -30 to -35 DEG C, and a freezing time is 6-15 min; and 7) carrying out low temperature cold preservation, wherein a temperature is less than or equal to -18 DEG C.

Description

technical field [0001] The invention relates to a fruit post-processing technology, in particular to a preparation method of cold fresh fruit pulp. Background technique [0002] Fresh melons, fruits and vegetables are rich in nutrition but cannot be preserved; some beans, tubers and nuts are nutritious but not easily absorbed by the body. For a long time, the preservation of dried and fresh fruits and vegetables has been based on the technology of high-temperature sterilization and low-temperature freezing. For example, Chinese patent document CN1846541 adopts a high-temperature enzymatic sterilization process in the process of preparing fruit pulp. The deep processing of dried and fresh fruits and vegetables is nothing more than making cans or squeezing juice to make pulp. The pulp preparation method using high-pressure homogeneous treatment represented by Chinese patent document CN1099949 is particularly effective in retaining nutrients and promoting human body absorption....

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved in the present invention is to reduce the oxidation factor in the fresh-keeping process, improve the freshness of the fruit pulp and the original taste; adopt the ultra-micron fiber fruit-dissolving technology, so that the fruit pulp can be dissolved in water immediately, and it is not easy to stratify and precipitate , more conducive to human nutrient absorption