Frozen and dried maca

Abstract

The invention relates to frozen and dried maca. The preparation of the maca comprises the following steps of: cleaning maca, airing moisture on the surface of the maca, feeding the maca into a vacuum freezing and drying machine, and cooling and freezing the maca to -35 to -40 DEG C; and drying the frozen maca in vacuum for 15-25 hours at a vacuum degree of 3-10 Pa, thus obtaining the frozen and dried maca, wherein the final drying temperature is controlled to be less than 35-40 DEG C. According to the invention, more than 95%-99% of moisture in the maca can be eliminated, other components in the maca are reserved in an original ecological manner, and particularly, many thermosensitive substances, such as protein, amino acid and volatile substances, are effectively reserved; because the maca is dried with in vacuum with little oxygen, some easily oxidized substances are also protected; and the original shape and properties of the maca is kept, the maca can be preserved for a long time, and thus the effects of maca health-care foods are ensured.

Description

Technical field [0001] The invention relates to a freeze-dried product, in particular to a freeze-dried maca, belonging to the technical field of food processing. Background technique [0002] Maca is a natural medicinal and edible plant fruit. For a long time, Maca has been an important food and health product widely consumed by residents in the Andes of South America. International botanists and medical experts have discovered through long-term research that Maca contains four alkaloids, glucosinolates, multiple vitamins, proteins, amino acids, polysaccharides, minerals and a variety of natural plant active ingredients. Maca has been proven to have various health care effects such as anti-fatigue, anti-depression, improving fertility, and regulating endocrine. Maca has been successfully introduced and cultivated in my country, and has been on the market. At present, some of the maca products on the market are sold on the original plants, because their shelf life is short, th...

AI Technical Summary

Problems solved by technology

At present, among the Maca products on the market, some are sold as raw plants, which are easy to perish due to their short shelf life; some are sold after drying the original plants of Maca by drying, boiling, baking, etc. Some process dried Maca into powder, and then make capsules and tablets for sale; some sell Maca wine after brewing

Since most of the above methods are carried out at a temperature above 60°C or higher, it is inevitable that some of the effective substances will be volatilized and oxidized during the processing, especially some heat-sensitive substances, such as proteins, vitamins, etc. Wait for a qualitative change