CN104522146A - Preservation method of tricholoma matsutake - Google Patents

Abstract

The invention discloses a preservation method of tricholoma matsutake (tricholoma matsutake (ItoetImai)Sing.). The preservation method comprises the following steps: firstly precooling tricholoma matsutake at 2-8 DEG C in a refrigeration house, sealing the tricholoma matsutake in an air-conditioning preservation box, and refrigerating the air-conditioning preservation box at 2-8 DEG C in the refrigeration house, wherein in the air-conditioning preservation box, the concentration of nitrogen is 80%-96%, the oxygen concentration is 2%-10%, and the carbon dioxide concentration is 2%-10%. The storage period of the tricholoma matsutake processed by virtue of the preservation method is 15-20 days longer than that of the unpreserved tricholoma matsutake stored at 2-4 DEG C in summer and is 20-25 days longer than that of the unpreserved tricholoma matsutake stored at the low temperature of 10-16 DEG C; furthermore, the preservation method has the beneficial effects that the toxicity, smell and the pollution are avoided, the efficiency is high, and the environment is protected, and the unresolved preservation problem in the extension of industrial chains of the tricholoma matsutake is effectively solved; the preservation method has wide application prospect.

Description

A kind of preservation method of matsutake

Technical field

The invention belongs to edible fungus fresh-keeping technical field, be specifically related to a kind of preservation method of matsutake.

Background technology

Matsutake (Tricholoma matsutake (ItoetImai) Sing.) is the wild edible fungi of Precious, Rare, Endangered, nutritious, delicious flavour, pleasant aroma, and there is stronger antitumaous effect, therefore deeply welcomed by the people, especially in Japan and Korea S, be one of noble food.In China, matsutake is not only ticbit, is also one of important exporting, has important economic worth, become the source of finance that remote mountain areas villager is important.In the existing industry chain of Tricholoma spp chain process of circulation, storage adopts deepfreeze more, namely under the low temperature of 2-4 DEG C and under the relative humidity of 90-95%, preserves 3-5 days.The fresh-keeping transport of long distance generally all adopts special cold chain car and air transportation mode, transportation and packing require strict, not only to close heat insulation, also need to add ice bag cooling simultaneously, haulage time generally can not more than 1 day, otherwise fresh matsutake can go bad, mouthfeel is turned sour, yellowish, nutrient loss.Therefore, in current logistics progress, being badly in need of one can effectively extend the matsutake shelf-life, and within the shelf-life, never degenerate, preservation method that not spoiled, nutriment does not run off.At present in the controlled atmosphere research of matsutake, domesticly to there is not yet carrying out UV treatment before matsutake storage and in conjunction with the report of cryopreservation.

Summary of the invention

The object of the present invention is to provide a kind of efficient, practical matsutake preservation method, extensive, the long distance commercial distribution of matsutake can be applied to, especially export abroad trade, to solve in industry chain of Tricholoma spp chain extension unsolved fresh-keeping problem always.

For achieving the above object, the present invention adopts following technical scheme:

A preservation method for matsutake, comprise the precooling treatment of matsutake, sterilizing, vacuumize, inflate, cryopreservation is fresh-keeping.

As described in preservation method, comprise the steps:

1) precooling treatment: by Tricholoma matsutake (lto et lmai) Singer sporophore constant temperature precooling treatment 1-6 hour at 2-8 DEG C;

2) sterilizing: after step (1), Tricholoma matsutake (lto et lmai) Singer sporophore concentration is 1-methyl cyclopropene 2-6 DEG C of stifling 4-12 hour of 0.3-1.2 μ l/L, then be placed in air-conditioning preservation box, air-conditioning preservation box is placed in freezer 2-6 DEG C precooling, use disinfection by ultraviolet light 2-5 time simultaneously, each 15-20 minute, every minor tick 20-40 minute;

3) vacuumize, inflate: after step (2), air in air-conditioning preservation box is exhausted to vacuum, and be filled with the nitrogen of 80-96%, the oxygen of 2-10%, the carbon dioxide of 2-10%;

4) cryopreservation: matsutake is housed in the freezer of 2-6 DEG C.

As described in a kind of preservation method of matsutake, wherein pre-coo time is 0.5-1 hour.

Compared with prior art, the present invention has following excellent benefit:

1) matsutake after process of the present invention, the situation such as weightlessness, brown stain, pathology of duration of storage can significantly improve, and maintains the organoleptic qualities such as good outward appearance, local flavor.

2) show through comparative test, matsutake after preservation method process of the present invention, than without Preservation Treatment, the storage period prolongation 15-20 days depositing matsutake at summer 2-4 DEG C, extends 20-25 days than the storage period of the matsutake without Preservation Treatment, 10-16 DEG C low-temp storage.

Physiological and Biochemical Metabolism reaction after adopting preservation method process matsutake of the present invention to suppress Tricholoma matsutake (lto et lmai) Singer sporophore to be adopted preferably, reduce its respiratory rate, suppress the Growth and reproduction of the mould class in Tricholoma matsutake (lto et lmai) Singer sporophore surface, the problem that effective solution matsutake storage period is short, greatly promotes the extension of industry chain of Tricholoma spp chain.

Detailed description of the invention

Further illustrate essentiality content of the present invention with embodiments of the invention below, but do not limit the present invention with this.

Embodiment 1

Matsutake fresh-keeping:

1) precooling treatment of matsutake: choose bacteria cover diameter >=5cm, not parachute-opening, free from insect pests, stem length >=7cm, the Tricholoma matsutake (lto et lmai) Singer sporophore of stem diameter >=3cm 10 kilograms, is laid on pallet or in frame of plastic, constant temperature precooling treatment 2 hours at 4 DEG C.

2) disinfect: after described precooling step, before putting into air-conditioning preservation box step, first fumigate 10 hours with the 1-methyl cyclopropene 6 DEG C that concentration is 0.5 μ l/L, Tricholoma matsutake (lto et lmai) Singer sporophore is placed in described air-conditioning preservation box, again air-conditioning preservation box is placed in freezer 4 DEG C of precoolings, also use disinfection by ultraviolet light 3 times, each 15 minutes, 30 minutes, interval simultaneously.

3) vacuumize, inflate process: after described precooling step, sterilization suddenly, air in air-conditioning preservation box is exhausted to vacuum, and is filled with the nitrogen of 90%, the oxygen of 5%, the carbon dioxide of 5%.

4) cryopreservation: packaged matsutake is housed in the freezer of 2 DEG C.

Embodiment 2

Matsutake fresh-keeping:

1) precooling treatment of matsutake: choose bacteria cover diameter >=5cm, not parachute-opening, free from insect pests, stem length >=7cm, the Tricholoma matsutake (lto et lmai) Singer sporophore of stem diameter >=3cm 20 kilograms, is laid on pallet or in frame of plastic, constant temperature precooling treatment 3 hours at 6 DEG C.

2) disinfect: after described precooling step, before putting into air regulating box step, first fumigate 12 hours with the 1-methyl cyclopropene 2 DEG C that concentration is 0.6 μ l/L, Tricholoma matsutake (lto et lmai) Singer sporophore is placed in described air regulating box, again air-conditioning preservation box is placed in freezer 4 DEG C of precoolings, use disinfection by ultraviolet light 2 times, each 20 minutes, 40 minutes, interval simultaneously.

3) vacuumize, inflate process: after described precooling step, sterilization suddenly, air in air regulating box is exhausted to vacuum, and is filled with the nitrogen of 84%, the oxygen of 7%, the carbon dioxide of 9%.

4) cryopreservation: packaged matsutake is housed in the freezer of 4 DEG C.

Embodiment 3

Matsutake fresh-keeping:

1) precooling treatment of matsutake: choose bacteria cover diameter >=5cm, not parachute-opening, free from insect pests, stem length >=7cm, the Tricholoma matsutake (lto et lmai) Singer sporophore of stem diameter >=3cm 20 kilograms, is laid on pallet or in frame of plastic, constant temperature precooling treatment 6 hours at 2 DEG C.

2) disinfect: after described precooling step, before putting into air-conditioning preservation box step, first fumigate 5 hours with the 1-methyl cyclopropene 4 DEG C that concentration is 0.3 μ l/L, Tricholoma matsutake (lto et lmai) Singer sporophore is placed in described air-conditioning preservation box, again air-conditioning preservation box is placed in freezer 6 DEG C of precoolings, use disinfection by ultraviolet light 4 times, each 18 minutes, 20 minutes, interval simultaneously.

3) vacuumize, inflate process: after described precooling step, sterilization suddenly, air in air-conditioning preservation box is exhausted to vacuum, and is filled with the nitrogen of 90%, the oxygen of 5%, the carbon dioxide of 5%.

4) cryopreservation: packaged matsutake is housed in the freezer of 5 DEG C.

Embodiment 4

Matsutake fresh-keeping:

1) precooling treatment of matsutake: choose bacteria cover diameter >=5cm, not parachute-opening, free from insect pests, stem length >=7cm, the Tricholoma matsutake (lto et lmai) Singer sporophore of stem diameter >=3cm 20 kilograms, is laid on pallet or in frame of plastic, constant temperature precooling treatment 1 hour at 5 DEG C.

2) disinfect: after described precooling step, before putting into air regulating box step, first fumigate 8 hours with the 1-methyl cyclopropene 3 DEG C that concentration is 1.2 μ l/L, Tricholoma matsutake (lto et lmai) Singer sporophore is placed in described air regulating box, again air-conditioning preservation box is placed in freezer 5 DEG C of precoolings, use disinfection by ultraviolet light 5 times, each 15 minutes, 25 minutes, interval simultaneously.

3) vacuumize, inflate process: after described precooling step, sterilization suddenly, air in air regulating box is exhausted to vacuum, and is filled with the nitrogen of 96%, the oxygen of 2%, the carbon dioxide of 2%.

4) cryopreservation: packaged matsutake is housed in the freezer of 6 DEG C.

Claims (3)

1. a preservation method for matsutake, it is characterized in that the method comprises the precooling treatment of matsutake, sterilizing, vacuumize, inflate, cryopreservation is fresh-keeping.

2. preservation method as claimed in claim 1, is characterized in that the method comprises the steps:

1) precooling treatment: by Tricholoma matsutake (lto et lmai) Singer sporophore in 2 ?at 8 DEG C constant temperature precooling treatment 1 ?6 hours;

2) sterilizing: after step (1), Tricholoma matsutake (lto et lmai) Singer sporophore concentration be 0.3 ?1.2 μ l/L 1 ?methyl cyclopropene 2 ?6 DEG C stifling 4 ?12 hours, then be placed in air-conditioning preservation box, air-conditioning preservation box is placed in freezer 2-6 DEG C precooling, use disinfection by ultraviolet light 2-5 time simultaneously, each 15-20 minute, every minor tick 20-40 minute;

3) vacuumize, inflate: after step (2), air in air-conditioning preservation box is exhausted to vacuum, and be filled with the nitrogen of 80-96%, the oxygen of 2-10%, the carbon dioxide of 2-10%;

4) cryopreservation: matsutake is housed in the freezer of 2-6 DEG C.

3. the preservation method of a kind of matsutake as claimed in claim 1 or 2, is characterized in that wherein pre-coo time is 0.5-1 hour.