Preparation method of vacuum freeze drying roses

A vacuum freeze-drying technology for roses, applied in botany equipment and methods, flower treatment, plant preservation, etc., can solve the problems of rose fragrance loss, no rose fragrance, high heating temperature, etc., to facilitate transportation and long-term storage , ruddy color and high sugar content

Active Publication Date: 2013-12-25
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 compl...

Method used

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  • Preparation method of vacuum freeze drying roses
  • Preparation method of vacuum freeze drying roses

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Experimental program
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Effect test

Embodiment 1

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

[0019] a. Picking roses: use fresh roses picked within 24 hours, and store them in the shade, the relative humidity of the environment should be less than 50%;

[0020] c. Vacuum freeze-drying: Put the roses into the vacuum freeze dryer and spread the material according to 10KG / M2, close the airtight door, turn on the switch of the vacuum pump and the switch of the freeze dryer, vacuumize to 15kPa, and start the refrigeration at the same time, within 2 hours Reduce the temperature of the cold trap of the vacuum freeze dryer to -40°C and keep it for 2 hours; slowly heat the product through the heating system under the partition to supply the heat required by the product during the sublimation process, and within 30 hours The roses are heated up to 15°C to dry the roses. The dried roses maintain their original bright colors, and their nutrients and health ca...

Embodiment 2

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

[0022] a. Picking roses: use fresh roses picked within 24 hours, and store them in the shade, the relative humidity of the environment should be less than 50%;

[0023] c. Vacuum freeze-drying: Put the roses into the vacuum freeze dryer and spread the material according to 15KG / M2, close the airtight door, turn on the switch of the vacuum pump and the switch of the freeze dryer, vacuumize to 20kPa, and start the refrigeration at the same time, within 3 hours Lower the temperature of the cold trap of the vacuum freeze dryer to -50°C and keep it for 1 hour; slowly heat the product through the heating system under the partition to supply the heat required by the product during the sublimation process, and within 20 hours The roses are heated to 10°C to dry the roses. The dried roses maintain their original bright colors, and their nutrients and health care fu...

Embodiment 3

[0024] Embodiment 3: a kind of preparation method of vacuum freeze-dried rose, its main feature is that the steps include:

[0025] a. Picking roses: use fresh roses picked within 24 hours, and store them in the shade, the relative humidity of the environment should be less than 50%;

[0026] c. Vacuum freeze-drying: put the roses into the vacuum freeze dryer and spread the material according to 20KG / M2, close the airtight door, turn on the switch of the vacuum pump and the switch of the freeze dryer, vacuumize to 25kPa, and start the refrigeration at the same time, within 4 hours Reduce the temperature of the cold trap of the vacuum freeze dryer to -65°C and keep it for 0.5 hours; slowly heat the product through the heating system under the partition to supply the heat required by the product during the sublimation process, and within 9 hours The roses are heated to 0°C to dry the roses. The dried roses maintain their original bright colors, and their nutrients and health ca...

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Abstract

The invention belongs to the field of health-care food processing and particularly relates to a technical method of vacuum freeze drying roses. A reparation method of the vacuum freeze drying roses is mainly characterized by comprising the following steps of a, picking roses; c, performing vacuum freeze drying on the roses, i.e. vacuumizing until the pressure is 15 to 25kPa, meanwhile, starting refrigeration, reducing the cold trap temperature of a vacuum freeze drier to 40 DEG C below zero to 65 DEG C below zero within 2 to 4 hours, keeping for 0.5 to 2 hours, and raising the temperature of the roses to 0 to 15 DEG C within 9 to 30 hours to dry the roses. The original bright-colored color of the roses is kept, and the nutritional ingredients and the health-care effect of the roses are kept to the greatest degree. The method has the advantages that the damage to the effective components for bioactivity of the dried roses is very low, the appearance of the dried roses is well kept, the nutritional ingredients and the active substances of the roses are kept, the moisture content is low, sugar content is high, and the roses are reddish and bright in color and luster, crystal clear and convenient to convey and store for a long time.

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 roses. 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 of M...

Claims

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Application Information

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IPC IPC(8): A01G5/00A01N3/00
Inventor 周围王波周小平郑红文
Owner GANSU INSPECTION & QUARANTINE SCI & TECH RES INST
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