A kind of Maca drying method

A technology of variable temperature drying and maca, which is applied in the direction of drying solid materials, heating to dry solid materials, drying, etc., can solve the problems of large differences in appearance and internal quality, and achieve the goal of avoiding manpower consumption, reducing wrinkle degree, and reducing degradation Effect

Active Publication Date: 2017-11-14
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Thirdly, natural sun-dried maca is affected by air temperature and humidity in different places, and its appearance and internal quality vary greatly.

Method used

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  • A kind of Maca drying method
  • A kind of Maca drying method
  • A kind of Maca drying method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Wash the fresh yellow maca, place it at room temperature and drain it naturally until the surface is free of moisture; then place the Chinese medicinal materials in a hot air drying oven to dry; After one hour, uniformly heat up to 55°C at a rate of 5°C / 24 h, then uniformly heat up to 70°C at a rate of 10°C / 12 h, keep warm until dry, and the time to reach a moisture content of ≤13% is 130 h. After drying, the surface of maca is smooth without wrinkles, the overall deformation is small, and its apparent color is bright (see figure 1 , 2 , 3).

Embodiment 2

[0025] Wash the fresh purple maca, place it at room temperature and drain it naturally until there is no moisture on the surface; then put it in a Chinese herbal medicine dryer; After that, the temperature was evenly raised to 55°C at a heating rate of 3°C / 24 h, and then evenly raised to 65°C at a rate of 7.5°C / 12 h, and kept warm until dry, and the time to reach a moisture content of ≤13% was 118 h. Maca is bright in color after drying, the surface is smooth without wrinkles, and the overall deformation is small (see Figure 4 , 5 ).

Embodiment 3

[0027] Wash the fresh black maca, place it at room temperature and drain it naturally until there is no moisture on the surface; then put it in a Chinese herbal medicine dryer; After that, the temperature was evenly raised to 55°C at a heating rate of 2.5°C / 24 h, and then evenly raised to 68°C at a speed of 5°C / 12 h, and kept warm until dry, and the time to reach a moisture content of ≤13% was 123 h. After drying, the appearance of maca is better, the surface is smooth and wrinkle-free, and the overall deformation is small (see Figure 6 , 7 ).

[0028] The nutrient content of yellow, purple and black maca under variable temperature drying process is shown in Table 1;

[0029] Table 1 The contents of various nutrients in maca of each color under variable temperature drying process (%)

[0030] .

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Abstract

The invention discloses a temperature-variable drying method for maca, which belongs to the technical field of primary processing of agricultural products; the method of the invention mainly includes the following steps: draining fresh maca after washing and drying at room temperature; Compared with the traditional drying method, the invention uses hot air drying equipment and adopts a slow variable speed heating process from low temperature to high temperature, which avoids the rapid loss of maca water, reduces deformation, maintains color, and ensures that nutrients are not lost. The drying time of maca has been shortened by more than 20 days, and the drying efficiency has been significantly improved. At the same time, it has also avoided the defects of traditional sun-drying methods such as labor-intensive, large-scale occupation, and easy pollution.

Description

technical field [0001] The invention discloses a variable temperature drying method for maca, which belongs to the technical field of primary processing of agricultural products. Background technique [0002] Maca ( Lepidium meyenii ) belongs to the genus Brassicaceae ( Lepidium ), also known as beetroot or Peruvian ginseng, is a plant that is both medicinal and edible. It has the effects of enhancing physical strength, enhancing human immunity, anti-fatigue, and improving fertility. In 2011, maca powder was officially approved as a new resource food by the former Ministry of Health. More than 60% of China's maca planting bases are concentrated in Lijiang, and the annual planting area and output of maca in this area reach 175 ha respectively 2 and 780 tons, accounting for 90% and 93% of the country's total. In 2014, Lijiang's maca output value was close to 4 billion, and it has become an important source of income for local farmers. [0003] At present, maca generally...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F26B3/00
Inventor 杨野代春艳崔秀明刘迪秋王承潇杨晓艳曲媛
Owner KUNMING UNIV OF SCI & TECH
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