CN105076374A - Fresh keeping method of Chinese yam - Google Patents

Fresh keeping method of Chinese yam Download PDF

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Publication number
CN105076374A
CN105076374A CN201510439179.5A CN201510439179A CN105076374A CN 105076374 A CN105076374 A CN 105076374A CN 201510439179 A CN201510439179 A CN 201510439179A CN 105076374 A CN105076374 A CN 105076374A
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chinese yam
blower fan
fresh
preservation
preservation method
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CN201510439179.5A
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CN105076374B (en
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不公告发明人
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Nanguo Agricultural Capital Industrial Development Hainan Group Co ltd
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Tianquan Xishuyahe Ecology Agriculture Development Co Ltd
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Abstract

The present invention discloses a fresh keeping method of Chinese yam, and includes pretreatment: washing the Chinese yam, cutting off tails to expose clean sectional surface, and using an air blower to dry moisture on the surface of the Chinese yam; root hair removal; removing root hair on the surface of the Chinese yam; disinfection treatment: soaking the Chinese yam in 75% ethanol for 10-20 seconds, removing the Chinese yam, and using an air blower to dry moisture on the surface of the Chinese yam; fresh keeping treatment: soaking the Chinese yam in fresh keeping solution (starch solution containing sodium dehydroacetate) for 50-70 seconds, removing the Chinese yam, and using an air blower to dry moisture on the surface of the Chinese yam; and packaging: bagging the Chinese yam for storage. The fresh keeping method can prolong the shelf life of the Chinese yam to 9 months, realize less loss of nutritional ingredients, and keep the taste of fresh Chinese yam.

Description

The preservation method of a kind of Chinese yam
Technical field
The present invention relates to postharvest technology of fruits and vegetables field, be specifically related to the preservation method of a kind of Chinese yam.
Background technology
Chinese yam all has cultivation in national most area, it is a typical healthcare crop planting vegetables medicine dual-purpose, average containing crude protein 14.48%, crude fat 3.78%, starch 43.79%, full sugar 1.14%, ash content 5.51%, potassium 2.62%, phosphorus pentoxide 0.72%, iron 53.75mg/kg, zinc 19.22mg/kg, copper 10.85mg/kg, magnesium 0.14%, calcium 0.12%, manganese 5.38mg/kg in Chinese yam fresh goods, and various vitamin, particularly free arginine content is up to 1.15%.Simultaneously, containing many secondary metabolites in Chinese yam, as hormonal precursors such as allantoin, sapogenin, choline, dopamines, Chinese yam is easy to change into the various hormone that needed by human body is wanted in vivo, become the material base that Chinese yam has special medical health care, making Chinese yam have tonifying spleen stomach invigorating, tonify the lung to relieve cough, nourishing and strengthening vital, prolong life in appearance, anticancer, prevent and treat the effects such as diabetes, clinically planting disease for preventing and treating more than 200.
Chinese yam was gathered in the crops about annual November, tradition adopts cellar to store or dewater and makes dry Chinese yam, but the storage of current each Chinese yam producing region Chinese yam, there is serious rotten problem in preservation process, the Chinese yam of some Chinese yam producing regions results in storage rotting rate up to more than 90%; And mouthfeel is poor after adopting conventional dehydration processing method to make dry product, without the delicate flavour of Chinese yam; In addition, the mucus that Chinese yam is oozed out is the important component of nutritive yam composition and health care, and after dry product is made in dehydration, active ingredient has greater loss.
Summary of the invention
In view of this, the application provides the preservation method of a kind of Chinese yam, and adopt described preservation method can extend the freshness date to 9 month of Chinese yam, nutrient component damages is few, and can keep the mouthfeel of fresh Chinese yam.
For solving above technical problem, technical scheme provided by the invention is the preservation method of a kind of Chinese yam, said method comprising the steps of:
(1) pretreatment: after being cleaned by Chinese yam, cut afterbody, expose clean section, adopts blower fan to be dried up by the moisture on described Chinese yam surface;
(2) except coring: get step (1) described moisture dry up after Chinese yam, the coring on described Chinese yam surface is removed;
(3) disinfect: the ethanol immersion that the Chinese yam after step (2) removing coring is placed in 75% was taken out after 10-20 seconds, dries up the surface moisture of described Chinese yam with blower fan;
(4) Preservation Treatment: the Chinese yam after step (3) being disinfected is placed in fresh-keeping liquid immersion and takes out after 50-70 seconds, dries up the surface moisture of described Chinese yam with blower fan; Described fresh-keeping liquid is the starch solution containing dehydro sodium acetate;
(5) pack: the Chinese yam after step (4) Preservation Treatment is carried out bagging storage.
Preferably, the afterbody of Chinese yam described in step (1) is have climing one end in Chinese yam.
Preferably, the time that described in step (1), blower fan dries up is 4 hours.
Preferably, the method for operating except coring described in step (2) is: described Chinese yam is placed in movement fast above flame, repeats 2-3 times, clear up the dust on described Chinese yam.
By removing the mode of coring on flame, Chinese yam can be avoided to form section at coring place, or form cut, the simultaneously loss of the nutritious mucus of tool in Chinese yam, plays better protection and preservation.
Preferably, the time that in described step (3), blower fan dries up is 5-10 minutes.
Preferably, described in step (4), the collocation method of fresh-keeping liquid is: added by starch in the water of 95-100 DEG C, stir and make starch solution, and described starch solution is cooled to normal temperature, add the dehydro sodium acetate that percentage by weight is 1.5%, stir and get final product.
More preferred, the addition of described starch is: every 1Kg water adds starch 30g.
Preferably, the time that in described step (4), blower fan dries up is 4-6 hours.
Described in the application, starch, ethanol all come from commercially available, and described dehydro sodium acetate to be felt at ease biological products Co., Ltd purchased from Guangzhou.
In addition, it should be noted that, in whole operating process, Chinese yam will be handled with care, especially finally want careful operation during packaging, avoid due to Chinese yam break rear directly in the place of breaking rotten.
Compared with prior art, it is described in detail as follows the application:
Technical scheme provides the preservation method of a kind of Chinese yam, specifically comprises the following steps:
(1) pretreatment: after being cleaned by Chinese yam, cut afterbody, expose clean section, adopts blower fan to be dried up by the moisture on described Chinese yam surface;
(2) except coring: get step (1) described moisture dry up after Chinese yam, the coring on described Chinese yam surface is removed;
(3) disinfect: the ethanol immersion that the Chinese yam after step (2) removing coring is placed in 75% was taken out after 10-20 seconds, dries up the surface moisture of described Chinese yam with blower fan;
(4) Preservation Treatment: the Chinese yam after step (3) being disinfected is placed in fresh-keeping liquid immersion and takes out after 50-70 seconds, dries up the surface moisture of described Chinese yam with blower fan; Described fresh-keeping liquid is the starch solution containing dehydro sodium acetate;
(5) pack: the Chinese yam after step (4) Preservation Treatment is carried out bagging storage.
By except coring, disinfect, Preservation Treatment, simultaneously all adopt blower fan to dry up described Chinese yam after each step, dried up by the air-flow of normal temperature, the loss of moisture in Chinese yam can be avoided as far as possible; , Chinese yam is carried out disinfection meanwhile, the bacterium that Chinese yam exists, fungi are killed, self occur when preventing the later stage from storing to rot; In addition; described Chinese yam is carried out Preservation Treatment; described fresh-keeping liquid is the starch solution containing dehydro sodium acetate; form the diaphragm of one deck densification on Chinese yam surface after described starch solution drying; at utmost reduce the aerobic respiration of Chinese yam; reduce the loss of moisture, therefore can reduce the nutrient consumption of Chinese yam self, adopt dehydro sodium acetate can ensure freshness and the mouthfeel thereof of Chinese yam.Prove through test, adopt technical scheme to carry out the Preservation Treatment of Chinese yam, can extend its shelf-life to 9 month, nutrient component damages is few, and can keep the mouthfeel of fresh Chinese yam.
Detailed description of the invention
In order to make those skilled in the art understand technical scheme of the present invention better, below in conjunction with specific embodiment, the present invention is described in further detail.
Embodiment one
It is fresh-keeping that the present embodiment employing technical scheme carries out Chinese yam, comprises the following steps:
(1) pretreatment: after being cleaned by Chinese yam, has climing one to cut Chinese yam, exposes clean section, adopts blower fan to be dried up by the moisture on described Chinese yam surface, about 4 hours;
(2) except coring: get step (1) described moisture dry up after Chinese yam, be placed in movement fast above flame, repeat 2-3 times, clear up the dust on described Chinese yam and coring;
(3) disinfect: the ethanol immersion that the Chinese yam after step (2) removing coring is placed in 75% was taken out after 10-20 seconds, dries up the surface moisture of described Chinese yam with blower fan, about 5-10 minutes;
(4) Preservation Treatment: the Chinese yam after step (3) being disinfected is placed in fresh-keeping liquid immersion and takes out after 50-70 seconds, dries up the surface moisture of described Chinese yam, about 4-6 hours with blower fan; The collocation method of wherein said fresh-keeping liquid is: added by starch in the water of 95-100 DEG C, stir and make starch solution, and described starch solution is cooled to normal temperature, adds the dehydro sodium acetate that percentage by weight is 1.5%, stirs and get final product;
(5) pack: the Chinese yam after step (4) Preservation Treatment is put mesh bag, is placed on shelf or cases.
Above-mentioned processing mode carries out fresh-keeping Chinese yam at least can store 9 months.
Embodiment two
Chinese yam after fresh-keeping in Example one, after Preservation Treatment, stores after 1,2,3,4,5,6,7,8,9 month, and detect the content of each composition of Chinese yam, result is as table 1.
Table 1 embodiment two Chinese yam each stage Chinese yam component content
Moisture/% Crude protein content/% Crude fat content/% Content of starch/% Sugar contents/%
After Preservation Treatment 75.00 14.48 3.78 43.79 1.14
After 1 month 75.00 14.48 3.78 43.74 1.13
After 2 months 75.00 14.46 3.76 43.70 1.11
After 3 months 74.55 14.40 3.70 43.70 1.10
After 4 months 74.35 14.35 3.70 43.67 1.09
After 5 months 74.30 14.23 3.65 43.60 1.09
After 6 months 74.12 14.20 3.60 43.60 1.08
After 7 months 74.00 14.18 3.52 43.54 1.05
After 8 months 73.69 14.12 3.49 43.52 1.02
After 9 months 73.51 14.08 3.40 43.50 1.00
As known from Table 1, adopt technical scheme to carry out Chinese yam fresh-keeping, can prolong storage period to 9 months or more, its each main component rate of change is all less.
Below be only the preferred embodiment of the present invention, it should be pointed out that above-mentioned preferred embodiment should not be considered as limitation of the present invention, protection scope of the present invention should be as the criterion with claim limited range.For those skilled in the art, without departing from the spirit and scope 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 (8)

1. a preservation method for Chinese yam, is characterized in that: said method comprising the steps of:
(1) pretreatment: after being cleaned by Chinese yam, cut afterbody, expose clean section, adopts blower fan to be dried up by the moisture on described Chinese yam surface;
(2) except coring: get step (1) described moisture dry up after Chinese yam, the coring on described Chinese yam surface is removed;
(3) disinfect: the ethanol immersion that the Chinese yam after step (2) removing coring is placed in 75% was taken out after 10-20 seconds, dries up the surface moisture of described Chinese yam with blower fan;
(4) Preservation Treatment: the Chinese yam after step (3) being disinfected is placed in fresh-keeping liquid immersion and takes out after 50-70 seconds, dries up the surface moisture of described Chinese yam with blower fan; Described fresh-keeping liquid is the starch solution containing dehydro sodium acetate;
(5) pack: the Chinese yam after step (4) Preservation Treatment is carried out bagging storage.
2. the preservation method of a kind of Chinese yam according to claim 1, is characterized in that: the afterbody of Chinese yam described in step (1) is have climing one end in Chinese yam.
3. the preservation method of a kind of Chinese yam according to claim 1, is characterized in that: the time that described in step (1), blower fan dries up is 4 hours.
4. the preservation method of a kind of Chinese yam according to claim 1, is characterized in that: the method for operating except coring described in step (2) is: described Chinese yam is placed in movement fast above flame, repeats 2-3 times, clear up the dust on described Chinese yam.
5. the preservation method of a kind of Chinese yam according to claim 1, is characterized in that: the time that in described step (3), blower fan dries up is 5-10 minutes.
6. the preservation method of a kind of Chinese yam according to claim 1, it is characterized in that: described in step (4), the collocation method of fresh-keeping liquid is: added by starch in the water of 95-100 DEG C, stir and make starch solution, described starch solution is cooled to normal temperature, add the dehydro sodium acetate that percentage by weight is 1.5%, stir and get final product.
7. the preservation method of a kind of Chinese yam according to claim 6, is characterized in that: the addition of described starch is: every 1Kg water adds starch 30g.
8. the preservation method of a kind of Chinese yam according to claim 1, is characterized in that: the time that in described step (4), blower fan dries up is 4-6 hours.
CN201510439179.5A 2015-07-23 2015-07-23 A kind of preservation method of Chinese yam Active CN105076374B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105747075A (en) * 2016-04-14 2016-07-13 合肥本盛生物科技有限公司 Premna microphylla fruit jelly preservation method
CN108850136A (en) * 2018-08-06 2018-11-23 徐州康汇百年食品有限公司 It is a kind of Yu zero son preservation method
CN108850134A (en) * 2018-08-06 2018-11-23 徐州康汇百年食品有限公司 A kind of preservation method of iron rod yam
CN111685172A (en) * 2020-06-24 2020-09-22 北京市农林科学院 Preservation method of Tiegun yam

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102318666A (en) * 2011-06-19 2012-01-18 徐州建华食品有限公司 Method for making fresh yam
CN103931753A (en) * 2014-05-05 2014-07-23 甘肃省农业科学院农产品贮藏加工研究所 Preservative special for tuber storage as well as preparation method and application method of preservative
CN104365828A (en) * 2014-10-14 2015-02-25 山东农业大学 Method for preventing novel browning of fresh-cut Chinese yam
CN104642512A (en) * 2013-11-19 2015-05-27 孟玉蓉 Preservation technology of Chinese yam
CN104663874A (en) * 2015-01-23 2015-06-03 广西大学 Coating preservation method of fresh-cut Chinese yam

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102318666A (en) * 2011-06-19 2012-01-18 徐州建华食品有限公司 Method for making fresh yam
CN104642512A (en) * 2013-11-19 2015-05-27 孟玉蓉 Preservation technology of Chinese yam
CN103931753A (en) * 2014-05-05 2014-07-23 甘肃省农业科学院农产品贮藏加工研究所 Preservative special for tuber storage as well as preparation method and application method of preservative
CN104365828A (en) * 2014-10-14 2015-02-25 山东农业大学 Method for preventing novel browning of fresh-cut Chinese yam
CN104663874A (en) * 2015-01-23 2015-06-03 广西大学 Coating preservation method of fresh-cut Chinese yam

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105747075A (en) * 2016-04-14 2016-07-13 合肥本盛生物科技有限公司 Premna microphylla fruit jelly preservation method
CN108850136A (en) * 2018-08-06 2018-11-23 徐州康汇百年食品有限公司 It is a kind of Yu zero son preservation method
CN108850134A (en) * 2018-08-06 2018-11-23 徐州康汇百年食品有限公司 A kind of preservation method of iron rod yam
CN111685172A (en) * 2020-06-24 2020-09-22 北京市农林科学院 Preservation method of Tiegun yam

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Effective date of registration: 20240429

Address after: Room 1004, 10th Floor, Shengda Business Plaza, No. 61 Guoxing Avenue, Meilan District, Haikou City, Hainan Province, 570100

Patentee after: Nanguo Agricultural Capital Industrial Development (Hainan) Group Co.,Ltd.

Country or region after: China

Address before: No. 185 Jianshe Road, Chengxiang Town, Tianquan County, Ya'an City, Sichuan Province, 625599

Patentee before: TIANQUAN XISHUYAHE ECOLOGICAL AGRICULTURE DEVELOPMENT CO.,LTD.

Country or region before: China