CN104824153A - Chinese chestnut controlled atmosphere storage fresh-keeping technology - Google Patents
Chinese chestnut controlled atmosphere storage fresh-keeping technology Download PDFInfo
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- CN104824153A CN104824153A CN201510178621.3A CN201510178621A CN104824153A CN 104824153 A CN104824153 A CN 104824153A CN 201510178621 A CN201510178621 A CN 201510178621A CN 104824153 A CN104824153 A CN 104824153A
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Abstract
The invention provides a Chinese chestnut controlled atmosphere storage fresh-keeping technology. The technology comprises the following steps: 1, pre-cooling harvested Chinese chestnut fruits in a sectional pre-cooling mode; 2, carrying out controlled atmosphere storage on pre-cooled fruits under the following conditions: the content of oxygen in the storage building envelope of a controlled atmosphere store is 3-5%, the content of carbon dioxide is 5-8%, the relative humidity is 90-95%, and the storage temperature of environment in the store is -2-0DEG C; and 3, carrying out atmosphere control according to natural breathing energy saving adjustment of the Chinese chestnut fruits in the arrival period, continuous or intermittent deoxidation nitrogen production by using a nitrogen production machine in the middle-late storage period which is the stable storage period of the Chinese chestnut fruits, and preset removal of carbon dioxide. The storage fresh-keeping technology can effectively prolong the storage period of Chinese chestnut to above 240d, makes the quality indexes of the fruits stable and good, maintains good flavor and mouthfeel, controls the total loss to be below 3%, and is a safe and effective Chinese chestnut storage fresh-keeping method.
Description
Technical field
The present invention relates to the controlled atmosphere storage technical field of fruits and vegetables, be specifically related to the controlled atmosphere storage technique of a kind of Chinese chestnut.
Background technology
Chinese chestnut is one of China's special product, and it is nutritious, except containing except a large amount of carbohydrate, also be rich in protein and fat, there is the peculiar flavours such as sweet, fragrant, glutinous, the dark welcome by the masses, also be that the current agricultural products in China rate of earning exchange in terms of exports of products is higher, the product that quantity is larger.Therefore, improve storing quality, extend the Chinese chestnut marketing fresh phase, have very important meaning to promotion Chinese chestnut prodution and development, the amount of expanding export.The preservation and freshness of the fresh Chinese chestnut of current China comprises simple and easy storage, husky Tibetan, refrigeration and air-cooler storage, the modes such as bag film storage and air conditioned storage.Chestnut storage is very wide in China's distribution, and all there is production various places, north and south, as preserving process falls behind and mismanagement, often damages by worms, germinates, dehydration and the phenomenon such as mildew and rot, causes orchard worker and trade company to be subject to great economic loss.
Summary of the invention
The object of the present invention is to provide the controlled atmosphere storage technique of a kind of Chinese chestnut, solution Chinese chestnut because of fresh-keeping improper, cause the weightlessness of Chinese chestnut, germinates and rot, reduce the loss and waste in storage.
The storage technology that the present invention takes is:
A controlled atmosphere storage technique for Chinese chestnut, its step requires as follows:
(1) adopt the mode of segmentation precooling that the Chinese chestnut fruit after gathering is carried out precooling treatment;
(2) fruit after above-mentioned steps (1) precooling treatment is carried out air conditioned storage, the condition of air conditioned storage is: in air-conditioned cold store storage building enclosure, oxygen gas component content is 3% ~ 5%, carbon dioxide component content is 5% ~ 8%, relative humidity 90% ~ 95%, storehouse environment reserve temperature is-2 ~ 0 DEG C.
(3) gas regulation mode is the general breathing energy-conservation adjustment of chestnut fruit for entering delivery date, and the storage middle and later periods is the chestnut fruit storage-stable phase, gas regulation mode be nitrogen making machine continuously or batch (-type) deoxidation nitrogen, carbon dioxide is that setting removes.
As preferred embodiment, described step (1) is further: after the fresh Chinese chestnut fruit cleaning Screening Treatment after plucking, precooling 6 ~ 12 hours in 10 ~ 15 DEG C of pre-freezers, and then precooling 12 ~ 24 hours in the pre-freezer of 2 ~ 5 DEG C.
As preferred embodiment, described step (1) is further: the Chinese chestnut fruit after precooling is carried out spontaneous controlled-atmosphere state, and when piling up neatly code amount and exceeding 75% of controlled atmosphere storage capacity, Chinese chestnut controlled atmosphere storage storehouse should be in hermetic seal storehouse state immediately.
As preferred embodiment, in described step (2), the condition of air conditioned storage is: in air-conditioned cold store storage building enclosure, oxygen gas component content is 3% ~ 5%, carbon dioxide component content is 5% ~ 8%, relative humidity 90% ~ 95%, and storehouse environment reserve temperature is-2 ~ 0 DEG C.
As preferred embodiment, described step (3) gas regulation mode terminates as the energy-conservation adjustment of chestnut fruit general breathing for entering delivery date, the storage middle and later periods is the chestnut fruit storage-stable phase, gas regulation mode be nitrogen making machine continuously or batch (-type) deoxidation nitrogen, carbon dioxide is that setting removes.
As preferred embodiment, described step (3) further gas regulation mode to be Chinese chestnut terminate as the energy-conservation adjustment of chestnut fruit general breathing entering delivery date, gas regulation, without the need to by mechanical adjustment, relies on the general breathing of Chinese chestnut fruit, consumes oxygen and produces carbon dioxide.General breathing energy-saving type regulates the phase to be 21 ~ 28 days.
As preferred embodiment, described step (3) further gas regulation mode is the chestnut fruit storage-stable phase for preserving the middle and later periods, gas regulation mode be nitrogen making machine continuously or batch (-type) deoxidation nitrogen, carbon dioxide eliminating is that when in set environment, carbon dioxide component content is 8%, automatic absorbing removes.
As mentioned above, the controlled atmosphere storage technique of a kind of Chinese chestnut of the present invention, has following effect: adopt the mode of segmentation precooling to carry out precooling treatment to the Chinese chestnut fruit after adopting and can reduce the generation that Fruits in Chinese Chestnut damages to plants caused by sudden drop in temperature; Preservation and freshness general breathing energy-conservation adjustment in early stage effectively reduces the operation cost of air-conditioned cold store, storage middle and later periods gas regulation mode be nitrogen making machine continuously or batch (-type) deoxidation nitrogen, carbon dioxide is that setting removes, and makes Fruits in Chinese Chestnut maintain good quality; This preserving process effectively can extend the storage period of Chinese chestnut more than 240 days, and the index of quality of fruit is stable good, and maintain good local flavor and mouthfeel, total losses control below 3%, are one Chinese chestnut preserving methods safely and effectively.
Detailed description of the invention
For making the technical problem to be solved in the present invention, technical scheme and advantage clearly, will be described in detail for specific embodiment below.
A kind of Chinese chestnut controlled atmosphere storage technique, comprises the following steps:
Step 1, the fresh Chinese chestnut fruit after adopting is rejected rot fruit, wormy fruit and impurity, and fully clean;
Step 2, the Chinese chestnut fruit that will clean after Screening Treatment, be placed on precooling in 10 ~ 15 DEG C of pre-freezers and carry out preliminary precooling in 6 ~ 12 hours;
Step 3, the Chinese chestnut after preliminary precooling is placed on 2 ~ 5 DEG C pre-freezer in precooling within 1 ~ 24 hour, carry out secondary precooling;
Step 4, in advance controlled atmosphere Kuku temperature is modulated to ± 0.5 DEG C, and the Chinese chestnut after secondary precooling is placed in modified atmosphere fresh-keeping storage;
Step 5, when Chinese chestnut buttress code amount exceedes 75% of controlled atmosphere storage capacity, Chinese chestnut controlled atmosphere storage storehouse should be in hermetic seal storehouse state immediately, and the Chinese chestnut fruit after pre-cold seal storehouse is carried out spontaneous controlled-atmosphere state.
Step 6, along with the breathing of Chinese chestnut fruit is in plateau, arranging your storehouse of modified atmosphere fresh-keeping storage environment reserve temperature is-2 ~ 0 DEG C.
Step 7, spontaneous controlled-atmosphere state terminate, and to set oxygen gas composition parameter in air-conditioned cold store storage building enclosure be content be 3% ~ 5%, and setting carbon dioxide composition parameter content is 5% ~ 8%, and setting relative humidity is 90% ~ 95%;
The gas regulation mode in step 8, Chinese chestnut controlled atmosphere storage storehouse be nitrogen making machine continuously or batch (-type) deoxidation nitrogen, oxygen gas component content is 3% ~ 5% and keeps steady state value, carbon dioxide de gas componant content lower than 8% time, when content is that automatic absorbing removes higher than setting value.
The relative humidity in step 9, Chinese chestnut controlled atmosphere storage storehouse is 90% ~ 95%, takes supersonic atomizing humidifier, and keeps steady state value;
Step 10, regularly sampling observation and mensuration Chinese chestnut outward appearance really, quality comparison and fresh-keeping fresh fruit;
The present invention is directed to the easy means such as backward for Chinese chestnut preserving process in prior art and the simple and easy storage of mismanagement, husky Tibetan, refrigeration, air-cooler storage and bag film storage, often to damage by worms, germinate, dehydration and the phenomenon such as to go rotten, cause orchard worker and trade company to be subject to the phenomenons such as great economic loss.Provide a kind of preserving process, and the storage period that effectively can extend Chinese chestnut was more than 240 days, the index of quality of fruit is stable good, and maintain good local flavor and mouthfeel, total losses control below 3%, are one Chinese chestnut preserving methods safely and effectively.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. a Chinese chestnut controlled atmosphere storage technique, is characterized in that, comprises the steps:
(1) adopt the mode of segmentation precooling that the Chinese chestnut fruit after gathering is carried out precooling treatment;
(2) fruit after precooling treatment is carried out air conditioned storage, the condition of air conditioned storage is: in air-conditioned cold store storage building enclosure, oxygen gas component content is 3% ~ 5%, carbon dioxide component content is 5% ~ 8%, relative humidity 90% ~ 95%, storehouse environment reserve temperature is-2 ~ 0 DEG C.
(3) gas regulation mode terminates as the general breathing energy-conservation adjustment of chestnut fruit for entering delivery date, and the storage middle and later periods is the chestnut fruit storage-stable phase, gas regulation mode be nitrogen making machine continuously or batch (-type) deoxidation nitrogen, carbon dioxide is that setting removes.
2. Chinese chestnut controlled atmosphere storage technique according to claim 1, it is characterized in that: described step (1) is further for by after the fresh Chinese chestnut fruit cleaning Screening Treatment after plucking, just precooling 6 ~ 12 hours in 10 ~ 15 DEG C of pre-freezers, to be then put in the pre-freezer of 2 ~ 5 DEG C precooling 12 ~ 24 hours.
3. Chinese chestnut controlled atmosphere storage technique according to claim 1, it is characterized in that: described step (1) is further for carrying out spontaneous controlled-atmosphere state by the Chinese chestnut fruit after precooling, when piling up neatly code amount and exceeding 75% of controlled atmosphere storage capacity, Chinese chestnut controlled atmosphere storage storehouse should be in hermetic seal storehouse state immediately.
4. Chinese chestnut controlled atmosphere storage technique according to claim 1, it is characterized in that: in described step (2), the condition of air conditioned storage is: in air-conditioned cold store storage building enclosure, oxygen gas component content is 3% ~ 5%, carbon dioxide component content is 5% ~ 8%, relative humidity 90% ~ 95%, storehouse environment reserve temperature is-2 ~ 0 DEG C.
5. Chinese chestnut controlled atmosphere storage technique according to claim 1, it is characterized in that: in described step (3), gas regulation mode terminates as the energy-conservation adjustment of chestnut fruit general breathing for entering delivery date, the storage middle and later periods is the chestnut fruit storage-stable phase, gas regulation mode be nitrogen making machine continuously or batch (-type) deoxidation nitrogen, carbon dioxide is that setting removes.
6. Chinese chestnut controlled atmosphere storage technique according to claim 1, it is characterized in that: described step (3) further gas regulation mode to be Chinese chestnut terminate as the energy-conservation adjustment of chestnut fruit general breathing entering delivery date, gas regulation is without the need to by mechanical adjustment, rely on the general breathing of Chinese chestnut fruit, consume oxygen and produce carbon dioxide.General breathing energy-saving type regulates the phase to be 21 ~ 28 days.
7. Chinese chestnut controlled atmosphere storage technique according to claim 1, it is characterized in that: described step (3) further gas regulation mode is the chestnut fruit storage-stable phase for preserving the middle and later periods, gas regulation mode be nitrogen making machine continuously or batch (-type) deoxidation nitrogen, carbon dioxide is that setting removes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510178621.3A CN104824153A (en) | 2015-04-15 | 2015-04-15 | Chinese chestnut controlled atmosphere storage fresh-keeping technology |
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| CN201510178621.3A CN104824153A (en) | 2015-04-15 | 2015-04-15 | Chinese chestnut controlled atmosphere storage fresh-keeping technology |
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| CN201510178621.3A Pending CN104824153A (en) | 2015-04-15 | 2015-04-15 | Chinese chestnut controlled atmosphere storage fresh-keeping technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108576206A (en) * | 2018-04-17 | 2018-09-28 | 西南科技大学 | Blood orange low temperature preservative |
| CN109430377A (en) * | 2018-10-15 | 2019-03-08 | 广州粒上皇食品有限公司 | Chinese chestnut and its storage practice |
| CN112268400A (en) * | 2020-10-23 | 2021-01-26 | 醉好科技运营(深圳)集团有限公司 | Wave band type ventilation system for adjusting gas content |
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| JPH0716048A (en) * | 1992-08-11 | 1995-01-20 | Hyogo Pref Gov | Preparation of cooked chestnut suppliable all the year round |
| JP2009284901A (en) * | 2008-05-01 | 2009-12-10 | Iwami Ginzan Nogyo Kyodo Kumiai | Method for insecticiding and preserving chestnut |
| CN102084894A (en) * | 2010-12-14 | 2011-06-08 | 天津科技大学 | Chinese chestnut brown stain preventing processing technology |
| CN102550660A (en) * | 2012-01-16 | 2012-07-11 | 山东省农业科学院农产品研究所 | Composite preservation method for prolonging preservation period of fresh chestnut kernels |
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2015
- 2015-04-15 CN CN201510178621.3A patent/CN104824153A/en active Pending
Patent Citations (4)
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| JPH0716048A (en) * | 1992-08-11 | 1995-01-20 | Hyogo Pref Gov | Preparation of cooked chestnut suppliable all the year round |
| JP2009284901A (en) * | 2008-05-01 | 2009-12-10 | Iwami Ginzan Nogyo Kyodo Kumiai | Method for insecticiding and preserving chestnut |
| CN102084894A (en) * | 2010-12-14 | 2011-06-08 | 天津科技大学 | Chinese chestnut brown stain preventing processing technology |
| CN102550660A (en) * | 2012-01-16 | 2012-07-11 | 山东省农业科学院农产品研究所 | Composite preservation method for prolonging preservation period of fresh chestnut kernels |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108576206A (en) * | 2018-04-17 | 2018-09-28 | 西南科技大学 | Blood orange low temperature preservative |
| CN109430377A (en) * | 2018-10-15 | 2019-03-08 | 广州粒上皇食品有限公司 | Chinese chestnut and its storage practice |
| CN109430377B (en) * | 2018-10-15 | 2022-08-02 | 广州粒上皇食品有限公司 | Chestnut and its storage method |
| CN112268400A (en) * | 2020-10-23 | 2021-01-26 | 醉好科技运营(深圳)集团有限公司 | Wave band type ventilation system for adjusting gas content |
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Application publication date: 20150812 |