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Preparation method of rosebud through vacuum freeze drying

A vacuum freeze-drying and rosebud technology, which is applied in botany equipment and methods, flower treatment, plant preservation, etc., can solve the problems of rose flower aroma loss, high heating temperature, and no rose aroma, so as to reduce volatility and Loss of heat-sensitive substances, high sugar content, ease of transportation and effects of long-term storage

Active Publication Date: 2015-04-08
GANSU INSPECTION & QUARANTINE SCI & TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the high heating temperature, the aroma of rose flowers is almost completely lost, and there is no rose aroma to be smelled after the dried flower buds are soaked in water.

Method used

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  • Preparation method of rosebud through vacuum freeze drying
  • Preparation method of rosebud through vacuum freeze drying

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: a kind of preparation method of vacuum freeze-dried rosebud, its main feature is that step comprises:

[0019] a. Rosebud picking: use fresh rosebuds picked within 24 hours, keep them in buds, store them in the shade, and keep the relative humidity of the environment less than 50%;

[0020] c. Vacuum freeze-drying: Put the roses in a vacuum freeze-dryer and press 10KG / M 2 Spread the material, close the airtight door, turn on the switch of the vacuum pump and the freeze dryer, evacuate to 15kPa, start refrigeration at the same time, reduce the temperature of the cold trap of the vacuum freeze dryer to -40°C within 2 hours, and keep it for 2 hours; The heating system under the partition heats the product slowly to supply the heat required by the product during the sublimation process, and raises the temperature of the roses to 15°C within 30 hours to dry the roses. The dried roses maintain their original bright colors, and their nutrients and health care fu...

Embodiment 2

[0021] Embodiment 2: a kind of preparation method of vacuum freeze-dried rosebud, its main feature is that step comprises:

[0022] a. Rosebud picking: use fresh rosebuds picked within 24 hours, keep them in buds, store them in the shade, and keep the relative humidity of the environment less than 50%;

[0023] c. Vacuum freeze-drying: Put the roses in a vacuum freeze-dryer and press 15KG / M 2 Spread the material, close the airtight door, turn on the switch of the vacuum pump and the freeze dryer, evacuate to 20kPa, start refrigeration at the same time, reduce the temperature of the cold trap of the vacuum freeze dryer to -50°C within 3 hours, and keep it for 1 hour; The heating system under the partition heats the product slowly to supply the heat required by the product during the sublimation process, and raises the temperature of the roses to 10°C within 20 hours to dry the roses. The dried roses maintain their original bright colors, and their nutrients and health care fun...

Embodiment 3

[0023] c. Vacuum freeze-drying: Put the roses in a vacuum freeze-dryer and press 15KG / M 2 Spread the material, close the airtight door, turn on the switch of the vacuum pump and the freeze dryer, evacuate to 20kPa, start refrigeration at the same time, reduce the temperature of the cold trap of the vacuum freeze dryer to -50°C within 3 hours, and keep it for 1 hour; The heating system under the partition heats the product slowly to supply the heat required by the product during the sublimation process, and raises the temperature of the roses to 10°C within 20 hours to dry the roses. The dried roses maintain their original bright colors, and their nutrients and health care functions are preserved to the greatest extent. Embodiment 3: a kind of preparation method of vacuum freeze-dried rosebud, its main feature is that the steps include:

[0024] a. Rosebud picking: use fresh rosebuds picked within 24 hours, keep them in buds, store them in the shade, and keep the relative humi...

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Abstract

The invention belongs to the field of health care food processing, in particular to a process method of a rosebud through vacuum freeze drying. A preparation method of the rosebud through vacuum freeze drying is mainly characterized by comprising the steps of a, rosebud picking; c, vacuum freeze drying: vacuum pumping is carried out to be 15-25kPa, refrigeration is started, the cold trap temperature of a vacuum freeze drying machine is reduced to minus 40 DEG C to minus 65 DEG C within 2-4 hours, and the holding time is 0.5-2 hours, the product is slowly heated by a heating system below a separator plate for supplying the product with the heat needed in the process of subliming, the temperature of the rosebud is raised to 0-15 DEG C within 9-30 hours for drying the rosebud; the original bright color of the dried rosebud is maintained, and the nutritional ingredient and the health care function of the rosebud are kept to the greatest degree. The preparation method has the advantages that the damage to the active ingredient of biological activity of the dried rosebud is minimal, the appearance is well preserved, the nutritional ingredient and the active substances of rose are kept, the moisture content is low, the sugar content is high, and the rose is reddish bright in color and crystal clear and is convenient for transportation and long-term storage.

Description

technical field [0001] The invention belongs to the field of health food processing, and in particular relates to a process for vacuum freeze-drying rosebuds. Background technique [0002] Rose is a perennial shrub plant in the family Rosaceae. Its buds are used as medicine. It has a long history of medicinal use and is one of the precious medicinal materials in my country. There are records of herbal medicines in the past dynasties, and it was first recorded in Yao Kecheng's "Food Materia Medica", saying: "Rose flowers are mainly beneficial to the lungs and spleen, benefit the liver and gallbladder, and ward off evil spirits. The fragrance of food is sweet and refreshing." "Qunfangpu" contains: "Roses are called wandering flowers, shrubs, thin leaves, dolly, rose-like, short stems; flowers are also rose-like... This flower is the most widely used, because of its fragrance, or as a fan pendant sachet; or smashed with icing sugar and ebony , called rose sauce." "Compendium o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G5/00A01N3/00
Inventor 周围王波张雅珩
Owner GANSU INSPECTION & QUARANTINE SCI & TECH RES INST