CN105557985B - Fresh-keeping method for gastrodia elata with soil - Google Patents

Fresh-keeping method for gastrodia elata with soil Download PDF

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Publication number
CN105557985B
CN105557985B CN201610044690.XA CN201610044690A CN105557985B CN 105557985 B CN105557985 B CN 105557985B CN 201610044690 A CN201610044690 A CN 201610044690A CN 105557985 B CN105557985 B CN 105557985B
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gastrodia elata
fresh
soil
ozone
environment
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CN105557985A (en
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王瑞
曹森
吉宁
谢国芳
刘志刚
马立志
高蓬明
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Guiyang University
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Guiyang University
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    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23BPRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B7/00Preservation or chemical ripening of fruit or vegetables
    • A23B7/14Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10
    • A23B7/144Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of gases, e.g. fumigation; Compositions or apparatus therefor
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23BPRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B7/00Preservation or chemical ripening of fruit or vegetables
    • A23B7/04Freezing; Subsequent thawing; Cooling
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23VINDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
    • A23V2002/00Food compositions, function of food ingredients or processes for food or foodstuffs

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Storage Of Fruits Or Vegetables (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)

Abstract

The invention discloses a fresh-keeping method of gastrodia elata with soil, belonging to a fresh-keeping method of medicinal and edible plants; aims to provide a fresh-keeping method for gastrodia elata, which has long fresh-keeping time, good effect and low cost. The method comprises the following steps: ventilating and healing the gastrodia elata with soil, filling the gastrodia elata with soil into a microporous film freshness protection bag, introducing mixed gas of ozone and carbon dioxide for sterilization, pre-cooling, storing at low temperature, and periodically introducing ozone for bacteriostasis. The method has simple and convenient operation, effective storage for 150 days, small loss of water and nutrient components and edibility rate of more than or equal to 90 percent; is a storage method of fresh rhizoma gastrodiae with soil.

Description

Fresh-keeping method for gastrodia elata with soil
Technical Field
The invention relates to a fresh-keeping method of a plant used as both medicine and food, in particular to a fresh-keeping method of gastrodia elata; belongs to a method for keeping agricultural products fresh.
Background
Along with the improvement of living standard, people pay more and more attention to health preservation. The fresh ginseng, the tuber fleeceflower root, the tall gastrodia tuber and other food and medicine dual-purpose foods are popular among more and more consumers and become a new favorite for dining tables. Rhizoma Gastrodiae is warm in nature, and has effects of resisting hypertension, resisting aging, dilating blood vessel, protecting heart, caring skin, etc.
The fresh gastrodia elata product has extremely high nutritive value, but soil and a large amount of water are attached to the surfaces of the harvested tubers; and the microorganisms in the soil are easy to grow rapidly in the preservation process, so that the gastrodia elata is mildewed, rotten and deteriorated, and difficult to preserve for a long time. At present, the low-temperature fresh-keeping is usually carried out after cleaning, draining and blow-drying, but not only can the loss of effective components such as gastrodin and polysaccharide be caused, but also the cleaning equipment and labor cost can be greatly increased. In order to reduce labor cost and comply with the market returning requirements, the method also adopts the modes of blanching, microwave sterilization, vacuum packaging, quick freezing, biological or chemical preservation solution soaking and the like to preserve the gastrodia elata with soil, but also has the defects of high operation cost, complex working procedures and the like. In addition, in the blanching and sterilization links of the gastrodia elata, gastrodin, polysaccharide, vitamin A, glycosides, alkaloids, vanillin and the like are lost to different degrees. Therefore, it is urgently needed to develop a fresh-keeping method for gastrodia elata with long fresh-keeping time, good fresh-keeping effect and low cost.
Ozone is a strong oxidant and catalyst with broad-spectrum and high-efficiency sterilization effects; the method is mainly used for drinking water disinfection, sewage treatment, air disinfection, food preservation, cold storage and frozen article sterilization and the like, and has no residue after sterilization and disinfection. The spontaneous modified atmosphere packaging technology can regulate the gas concentration and the relative humidity in the storage environment, and is the most economic, most widely applied and most reliable fresh-keeping storage technology for food safety at present.
If the ozone sterilization and modified atmosphere film packaging technologies can be organically combined for gastrodia tuber preservation, the method undoubtedly has very important significance for reducing the gastrodia tuber preservation cost, simplifying the preservation method, avoiding the loss of nutrient components and the like.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the fresh-keeping method for the gastrodia elata with soil, which has long fresh-keeping time, good effect and low cost.
In order to achieve the purpose, the technical scheme of the invention is as follows:
1) spreading and airing the dug gastrodia elata with the soil in a ventilation environment at 10-20 ℃ until the surface is dry;
2) putting the dried gastrodia elata into a freshness protection package, placing the freshness protection package in a closed sterilization environment at the temperature of 10-20 ℃, and introducing ozone and carbon dioxide mixed gas for sterilization for 24 hours; wherein the concentration of ozone is 15-40 mg/m3The concentration of carbon dioxide is 85-98%;
3) placing the sterilized gastrodia elata in an environment with the temperature of 2-3 ℃ for precooling for 24 hours, fastening a bag opening, and placing in an environment with the temperature of 1.5-4.5 ℃ and the humidity of 70-90% for storage; ozone is introduced into the storage environment once every three days to ensure that the ozone concentration of the storage environment reaches 40-60 mg/m3
The freshness protection package has a thickness of 20-40 μm and an oxygen permeability coefficient of 7-10 x 108mL×m-2•d-1•atm-1The polyethylene microporous film fresh-keeping bag; the rhizoma Gastrodiae is radix Aconiti KusnezoffiiRhizoma Gastrodiae, or rhizoma Gastrodiae mixed with WUHONG.
Compared with the prior art, the invention adopts the technical scheme, organically combines the prior mature ozone sterilization, the spontaneous modified atmosphere film packaging technology and the low-temperature storage and preservation technology, and introduces the distribution gas into the sterilization environment; therefore, most microorganisms such as the rotting bacteria and the like are killed or inhibited under the dual actions of the ozone and the high-concentration carbon dioxide, so that the important factors of rotting and deteriorating the gastrodia elata are eliminated. However, the strong oxidation of ozone also destroys plant cells, and can quickly diffuse and penetrate into the cells to damage the plants and accelerate the decay of the plants; therefore, in the technical scheme, the concentration of ozone in the mixed gas is controlled to be 15-40 mg/m3Controlling the concentration of ozone introduced into the storage environment to be 40-60 mg/m3Is more reasonable. Experiments prove that the gastrodia elata has better tolerance to carbon dioxide, so that the carbon dioxide with the concentration of 85-98% is reasonably adopted in the mixed gas.
In addition, the microporous film freshness protection package is used for storage, so that the water transpiration of the plant tissue can be inhibited, and the microporous film has good permeability to oxygen molecules and certain barrier property to carbon dioxide, so that the plant tissue can be in a high-concentration carbon dioxide environment in the packaging bag, the breathing of the plant tissue and microorganisms is inhibited, and the aims of delaying the physiological metabolism of the tissue and prolonging the freshness protection period are fulfilled.
The method has the advantages of simple and convenient operation, long fresh-keeping period, less nutrient loss, low cost and the like.
Detailed Description
The invention is further illustrated by the following specific examples:
example 1
1) Spreading and airing the harvested gastrodia elata with soil in a room at the temperature of 10-20 ℃, ventilating for 2-3 days, and naturally healing and drying the surface of the gastrodia elata;
2) loading dried rhizoma Gastrodiae into a container with a thickness of 20 μm and an oxygen permeability coefficient of 10 × 108mL×m-2•d-1•atm-1The polyethylene material microporesPlacing the film freshness protection bag in a closed sterilization environment at the temperature of 10-20 ℃, and introducing ozone and carbon dioxide mixed gas for sterilization for 24 hours; wherein the ozone concentration is 15mg/m3The concentration of carbon dioxide is 98 percent;
3) placing the sterilized gastrodia elata Blume in an environment with the temperature of 2-3 ℃ for precooling for 24 hours, fastening a bag opening, and placing the bag opening in an environment with the temperature of 2 +/-0.5 ℃ and the humidity of 70% for storage; ozone is introduced into the storage environment once every three days to ensure that the ozone concentration of the storage environment reaches 40mg/m3
Detection shows that the fresh-keeping treatment of the gastrodia elata with soil is carried out for 150 days (relative to the day of excavation) by adopting the method, the water content of the gastrodia elata is reduced by 4%, the gastrodin content is reduced by 5%, and the edible rate is 93%.
Example 2
1) Spreading and airing the harvested gastrodia elata with the clay in a room at the temperature of 10-20 ℃, ventilating for 2-3 days, and naturally healing and drying the surface of the gastrodia elata;
2) loading dried rhizoma Gastrodiae into a container of 40 μm with oxygen permeability coefficient of 7 × 108mL×m-2•d-1•atm-1Placing the polyethylene microporous film fresh-keeping bag in a closed sterilization environment at 10-20 ℃, and introducing ozone and carbon dioxide mixed gas for sterilization for 24 hours; wherein the ozone concentration is 40mg/m3The concentration of carbon dioxide is 90 percent;
3) placing sterilized rhizoma Gastrodiae in an environment of 3 deg.C for precooling for 24h, tightening the bag mouth, and storing in an environment of 4 + -0.5 deg.C and humidity of 90%; ozone is introduced into the storage environment once every three days to ensure that the ozone concentration of the storage environment reaches 60mg/m3
The detection shows that the fresh-keeping treatment of the Gastrodia elata Blume with soil is carried out for 150 days (relative to the current day of mining and digging), the water content of the Gastrodia elata Blume is reduced by 2%, the gastrodin content is reduced by 3%, and the edible rate is 95%.
Example 3
1) Spreading and airing the harvested dark red hybrid gastrodia elata with soil in a room at 10-20 ℃, ventilating for 2-3 days, naturally healing the gastrodia elata and drying the surface of the gastrodia elata;
2) hybridizing the dried dark redThe rhizoma Gastrodiae is packed into a container with a diameter of 32 μm and an oxygen permeability coefficient of 8.6 × 108mL×m-2•d-1•atm-1Placing the polyethylene microporous film fresh-keeping bag in a closed sterilization environment at 10-20 ℃, and introducing ozone and carbon dioxide mixed gas for sterilization for 24 hours; wherein the ozone concentration is 28mg/m3The concentration of carbon dioxide is 85 percent;
3) placing sterilized hybrid rhizoma Gastrodiae under 3 deg.C environment for precooling for 24h, tightening bag mouth, and storing in 3 + -0.5 deg.C environment with humidity of 85%; ozone is introduced into the storage environment once every three days to ensure that the ozone concentration of the storage environment reaches 45mg/m3
Detection shows that the method can keep fresh for 150 days (relative to the day of mining and digging), the water content of rhizoma Gastrodiae is reduced by 5%, gastrodin content is reduced by 7%, and edible rate is 92%.

Claims (2)

1. A fresh-keeping method for gastrodia elata with soil is characterized by comprising the following steps:
1) spreading and airing the dug gastrodia elata with the soil in a ventilation environment at 10-20 ℃ until the surface is dry;
2) putting the gastrodia elata with the dried surface into a freshness protection package, placing the freshness protection package in a closed sterilization environment at the temperature of 10-20 ℃, and introducing ozone and carbon dioxide mixed gas for sterilization for 24 hours; wherein the concentration of ozone is 15-40 mg/m3The concentration of carbon dioxide is 85-98%; the freshness protection package has a thickness of 20-40 μm and an oxygen permeability coefficient of 7-10 x 108mL×m-2·d-1·atm-1The polyethylene microporous film fresh-keeping bag;
3) placing the sterilized gastrodia elata in an environment with the temperature of 2-3 ℃ for precooling for 24 hours, fastening a bag opening, and placing in an environment with the temperature of 1.5-4.5 ℃ and the humidity of 70-90% for storage; ozone is introduced into the storage environment once every three days to ensure that the ozone concentration of the storage environment reaches 40-60 mg/m3
2. The method for preserving gastrodia elata with soil as claimed in claim 1, wherein the method comprises the following steps: the rhizoma Gastrodiae is Gastrodia elata Blume, or Gastrodia elata Blume and Gastrodia elata Blume hybrid.
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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107173430A (en) * 2017-06-09 2017-09-19 贵阳学院 A kind of preservation method of the native ternip fresh fruit of band
CN107373279B (en) * 2017-08-16 2018-09-25 贵州省科创气体有限公司 A kind of fresh-keeping gas of fresh Rhizoma Gastrodiae and its preparation method
CN107788099A (en) * 2017-11-02 2018-03-13 贵阳学院 A kind of composite fresh-keeping method for eating rhizoma Gastrodiae raw
CN108902640A (en) * 2018-07-11 2018-11-30 贵阳学院 A kind of composite fresh-keeping method of fresh Rhizoma Gastrodiae
CN110771773B (en) * 2019-09-24 2023-06-09 昭通市天麻研究院 Compound processing method for cold chain preservation of gastrodia elata

Citations (4)

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Publication number Priority date Publication date Assignee Title
CN102793003A (en) * 2012-07-26 2012-11-28 苏州亚和保鲜科技有限公司 Modified atmosphere freshness-retaining method for vegetables
CN104026215A (en) * 2014-06-18 2014-09-10 贵阳学院 Fresh-keeping method for prolonging shelf life of fresh beans
CN104938614A (en) * 2015-06-02 2015-09-30 天津市洋裕生物技术有限公司 Preservation method for transport and storage of potatoes
CN105028619A (en) * 2015-07-23 2015-11-11 成都市农林科学院 Modified-atmosphere preservation method for bitter gourds

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102793003A (en) * 2012-07-26 2012-11-28 苏州亚和保鲜科技有限公司 Modified atmosphere freshness-retaining method for vegetables
CN104026215A (en) * 2014-06-18 2014-09-10 贵阳学院 Fresh-keeping method for prolonging shelf life of fresh beans
CN104938614A (en) * 2015-06-02 2015-09-30 天津市洋裕生物技术有限公司 Preservation method for transport and storage of potatoes
CN105028619A (en) * 2015-07-23 2015-11-11 成都市农林科学院 Modified-atmosphere preservation method for bitter gourds

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