The method of the fresh-keeping fresh flower green pepper of low temperature controlled atmosphere bag
Technical field
The present invention relates to a kind of fresh flower green pepper preservation method, specifically, is that a kind of controlled atmosphere bag that under low temperature environment, utilizes carries out fresh-keeping method to the fresh flower green pepper.
Background technology
Chinese prickly ash is one of China's traditional " eight big flavouring ", has spicy aromatic odor, and can press down has a strong smell separates raw meat, is culinary art seafood delights, fishy smell, meat and the indispensable seasoning matter of stir-fried food.The fresh Chinese prickly ash aromatic flavour of plucking, color and luster is vivid and receive consumer's favor deeply, but because the Chinese prickly ash fresh fruit is organized very tenderly, the surface does not have the significant protection structure; Pluck under the normal temperature of back in three to five days; Moisture that it contains and fragrant volatile oil component will scatter and disappear in a large number, and fragrance is thin out, and color and luster deepens; The bad change of local flavor causes being difficult to as fresh flower green pepper commodity selling.Therefore, except that the Chinese prickly ash collecting period has a small amount of fresh flower green pepper appears on the market, most Chinese prickly ashes only can appear on the market with dry product.In recent years, the improving constantly of Along with people's living standard, market constantly increases the demand of fresh flower green pepper.For prolonging the freshness date of fresh flower green pepper, there is the people once to attempt adopting low-temperature cold store and controlled atmosphere storage that the fresh flower green pepper is carried out preservation and freshness.Deepfreeze mode equipment needed thereby is simple, small investment, but have storage period short (generally only can preserve 1-2 month), Chinese prickly ash goes rotten and loses serious problems.The air conditioned storage mode can be under suitable cryogenic conditions; Through changing storage environment gas componant, relative humidity; Create the fresh flower green pepper and preserve preferable environment; The storage period of significant prolongation fresh flower green pepper (generally can reach 3-4 month), but have following problem: the one, equipment investment is big, and general enterprise and individual and private business family all are difficult to realize.The 2nd, storage space is big; Key technologies such as the gas componant of storage space and proportioning thereof, temperature, humidity are difficult to accomplish accuracy controlling; Cause the quality of the Chinese prickly ash after the refrigeration to descend, gloss, color and local flavor all are difficult to compare with the Chinese prickly ash of just having plucked, and salability is relatively poor.The 3rd, complex management, time-consuming and a large amount of consume electric power, the cost of storage is too high, has increased the weight of terminal consumer's financial burden.Therefore, it is very necessary that the fresh flower green pepper preservation method that the research operating procedure is simple, cost is little, storage time is long and the Chinese prickly ash quality is descended seems.
Summary of the invention
The present invention is directed to the problem that prior art exists, provide a kind of simple, the method for the fresh-keeping fresh flower green pepper of low temperature controlled atmosphere bag that cost is little is to reach the purpose that prolongs fresh flower green pepper freshness date and can keep original quality of fresh flower green pepper and local flavor.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
The method of the fresh-keeping fresh flower green pepper of low temperature controlled atmosphere bag, this method adopts following steps:
A) the fresh Chinese prickly ash after precooling will be plucked is divided the precooling room precooling in cool place 10-15 hour, and so operation can guarantee to bring in the Chinese prickly ash fruit grain field heat to be able to evenly discharge fully;
B) sterilization charges into 40mg ± 5mg/m with ozone generator to precooling room
3The O of concentration
3, act on 0.5-1 hour and sterilize, so operation can guarantee the airborne bacterium of precooling room and thoroughly killed attached to the bacterium of green pepper fruit epidermis, to prolong the storage fresh-keeping phase;
C) be divided in the precooling room, the fresh flower green pepper after the sterilization is piled up in the polyethylene air-adjustable fresh-keeping bag, with ventilator the gas in the freshness protection package is found time then, charge into the O that volume proportion is 0.5%-1%
2With surplus be N
2Fresh-keeping gas after seal, relative humidity keeps 80%-85% in the freshness protection package, so operation; Not only can remove the acetylene in bag interior gas, restrain its dematuration, delay the after-ripening and the aging course of Chinese prickly ash Chinese prickly ash; And the low-oxygen environment of building can effectively suppress green pepper and really breathe, and reduces the nutriment loss, restrains pathogen and grows breeding; The generation of control physiological maladies, simultaneously, through increasing the relative humidity in the gas in the bag; Can reduce the transpiration that Chinese prickly ash includes moisture, for the fresh flower green pepper storage initial stage is built good environment, it is fresh-keeping to be beneficial to fresh flower green pepper long term storage;
C) warehouse-in is deposited the immigration of the Chinese prickly ash after packing low-temperature cold store, and temperature of ice house is controlled to be 2-4 ℃, and so operation helps the long term storage of green pepper fruit;
D) regularly the every 8-12 of Chinese prickly ash days of moving into behind the freezer of ventilation are changed the gas in the freshness protection package one time, and gas that each time of duration of storage changes to and parameter thereof are: change to the O that volume proportion is 0.5%-1% the 1-2 time
2With surplus be N
2Gas, the bag in relative humidity 80%-85%; Change to the O that volume proportion is 1%-1.5% for the 3-5 time
2, 1%-1.5% CO
2With surplus be N
2Gas, relative humidity 85%-90%; Change to the O that volume proportion is 1%-1.5% for the 6-8 time
2, 1.5%-2.5% CO
2With surplus be N
2Gas, relative humidity 85%-90%; Change to the O that volume proportion is 1%-2.5% after reaching for the 9th time at every turn
2, 2.5%-3.5% CO
2With surplus be N
2Gas, relative humidity 90%-95%; So operation can be each stage of fresh flower green pepper storage to build good environment, guarantees fresh flower green pepper Long-term Storage and quality and local flavor do not change;
E) outbound.
As optimization, the precooling temperature in the said precooling step is 12 hours.So, can guarantee to bring in the Chinese prickly ash fruit grain field heat to be able to evenly discharge fully.
As optimization, charge into the O of precooling room in the said sterilization steps
3Concentration is 40mg/m
3, be 45 minutes action time.So, can guarantee the airborne bacterium of precooling room and thoroughly killed attached to the bacterium of green pepper fruit epidermis.
As optimization, charge into the interior gas volume of freshness protection package in the said packing step than the O that is 0.6%
2With 99.4% N
2, relative humidity 82% in the bag.So, can be the fresh flower green pepper storage initial stage to build best storage environment, it is fresh-keeping to be beneficial to fresh flower green pepper long term storage.
As optimization, each time of duration of storage changes to the parameter of gas and be in the said timing ventilation step: the volume proportion that changes to gas for the 1-2 time is 0.8% O
2With 99.2% N
2, relative humidity 84%; The volume proportion that changes to gas for the 3-5 time is 1.2% O
2, 1.4% CO
2With 97.4% N
2, relative humidity 86%; The volume proportion that changes to gas for the 6-8 time is 1.4% O
2, 2% CO
2With 96.6% N
2, relative humidity 88%; The volume proportion that at every turn changes to gas after reaching for the 9th time is 2% O
2, 3% CO
2With 95% N
2, relative humidity 92%; So operation can be each stage of fresh flower green pepper storage to build suitable environment, guarantees fresh flower green pepper Long-term Storage and quality and local flavor do not change.
Compared with prior art; The accuracy controlling of key technologies such as gas that the present invention charges into and regularly changes to through precooling, sterilization, packing, warehouse-in and to freshness protection package and proportioning thereof, temperature, humidity; The freshness date of fresh flower green pepper was extended to more than 4 months by the 3-5 under the normal temperature days, and keep the original local flavor of fresh flower green pepper, it is thin out fragrance not occur; Quality deterioration phenomenons such as color and luster deepens possess marketing quality and marketability preferably.The method operating procedure is simple, and cost is lower, for ordinary enterprises and individual and private business family can bear.
The specific embodiment
Provide three embodiment of the present invention below
Embodiment 1
The method of the fresh-keeping fresh flower green pepper of low temperature controlled atmosphere bag, this method adopts following steps:
A) the fresh Chinese prickly ash after precooling will be plucked is divided the precooling room precooling in cool place 12 hours;
B) sterilization charges into 40mg/m with ozone generator to precooling room
3The O of concentration
3, act on 45 minutes and sterilize;
C) be divided in the precooling room, the fresh flower green pepper after the sterilization is piled up in the polyethylene air-adjustable fresh-keeping bag, with ventilator the gas in the freshness protection package is found time then, charge into volume proportion and be 0.6% O
2With 99.4% N
2Fresh-keeping gas after seal, relative humidity keeps 82% in the freshness protection package;
C) warehouse-in is deposited the immigration of the Chinese prickly ash after packing low-temperature cold store, and temperature of ice house is controlled to be 3 ℃;
D) regularly the Chinese prickly ash that moves into behind the freezer of ventilation was changed the gas in the freshness protection package in per 10 days one time, and gas that each time of duration of storage changes to and parameter thereof are: change to volume proportion for the 1-2 time and be 0.8% O
2With 99.2% N
2The gas of forming, relative humidity 84% in the bag; Change to volume proportion for the 3-5 time and be 1.2% O
2, 1.4% CO
2With 97.4% N
2The gas of forming, relative humidity 86%; Change to volume proportion for the 6-8 time and be 1.4% O
2, 2% CO
2With 96.6% N
2The gas of forming, relative humidity 88%; The 9th time and after to change to volume proportion be 2% O at every turn
2, 3% CO
2With 95% N
2The gas of forming, relative humidity 92%;
E) outbound.
Embodiment 2
The method of the fresh-keeping fresh flower green pepper of low temperature controlled atmosphere bag, this method adopts following steps:
A) the fresh Chinese prickly ash after precooling will be plucked is divided the precooling room precooling in cool place 10 hours;
B) sterilization charges into 42mg/m with ozone generator to precooling room
3The O of concentration
3, act on 35 minutes and sterilize;
C) be divided in the precooling room, the fresh flower green pepper after the sterilization piled up in the polyethylene air-adjustable fresh-keeping bag, with ventilator the gas in the freshness protection package is found time then, charge into volume proportion and be 0.5% 0
2With 99.5% N
2Fresh-keeping gas after seal, relative humidity keeps 84% in the freshness protection package;
C) warehouse-in is deposited the immigration of the Chinese prickly ash after packing low-temperature cold store, and temperature of ice house is controlled to be 2 ℃;
D) regularly the Chinese prickly ash that moves into behind the freezer of ventilation was changed the gas in the freshness protection package in per 9 days one time, and gas that each time of duration of storage changes to and parameter thereof are: change to volume proportion for the 1-2 time and be 0.9% O
2With 99.1% N
2The gas of forming, relative humidity 82% in the bag; Change to volume proportion for the 3-5 time and be 1.4% O
2, 1.2% CO
2With 97.4% N
2The gas of forming, relative humidity 88%; Change to volume proportion for the 6-8 time and be 1.2% O
2, 2.2% CO
2With 96.6% N
2The gas of forming, relative humidity 86%; The 9th time and after to change to volume proportion be 2.2% O at every turn
2, 2.6% CO
2With 95.2% N
2The gas of forming, relative humidity 94%;
E) outbound.
Embodiment 3
The method of the fresh-keeping fresh flower green pepper of low temperature controlled atmosphere bag, this method adopts following steps:
A) the fresh Chinese prickly ash after precooling will be plucked is divided the precooling room precooling in cool place 14 hours;
B) sterilization charges into 38mg/m with ozone generator to precooling room
3The O of concentration
3, act on 50 minutes and sterilize;
C) be divided in the precooling room, the fresh flower green pepper after the sterilization is piled up in the polyethylene air-adjustable fresh-keeping bag, with ventilator the gas in the freshness protection package is found time then, charge into volume proportion and be 0.8% O
2With 99.2% N
2Fresh-keeping gas after seal, relative humidity keeps 80% in the freshness protection package;
C) warehouse-in is deposited the immigration of the Chinese prickly ash after packing low-temperature cold store, and temperature of ice house is controlled to be 4 ℃;
D) regularly the every 11-of Chinese prickly ash days of moving into behind the freezer of ventilation are changed the gas in the freshness protection package one time, and gas that each time of duration of storage changes to and parameter thereof are: change to volume proportion for the 1-2 time and be 0.6% O
2With 99.4% N
2The gas of forming, relative humidity 85% in the bag; Change to volume proportion for the 3-5 time and be 1% O
2, 1.5% CO
2With 97.5% N
2The gas of forming, relative humidity 85%; Change to volume proportion for the 6-8 time and be 1.5% O
2, 1.6% CO
2With 96.9% N
2The gas of forming, relative humidity 90%; The 9th time and after to change to volume proportion be 1.5% O at every turn
2, 3.2% CO
2With 95.3% N
2The gas of forming, relative humidity 90%;
E) outbound.
Experiment showed, that to adopt such scheme that each kind fresh flower green pepper is carried out fresh-keeping, freshness date is all above 4 months, and the original local flavor of maintenance fresh flower green pepper, and it is thin out fragrance not occur, and color and luster quality deterioration phenomenon such as deepen, go rotten possesses marketing quality and marketability preferably.