CN102630742B - Ultrahigh-pressure refreshing method for maintaining quality of fresh lotus roots - Google Patents
Ultrahigh-pressure refreshing method for maintaining quality of fresh lotus roots Download PDFInfo
- Publication number
- CN102630742B CN102630742B CN 201210146582 CN201210146582A CN102630742B CN 102630742 B CN102630742 B CN 102630742B CN 201210146582 CN201210146582 CN 201210146582 CN 201210146582 A CN201210146582 A CN 201210146582A CN 102630742 B CN102630742 B CN 102630742B
- Authority
- CN
- China
- Prior art keywords
- pressure
- lotus
- ultrahigh
- bright lotus
- lotus roots
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Storage Of Fruits Or Vegetables (AREA)
Abstract
The invention discloses an ultrahigh-pressure refreshing method for maintaining the quality of fresh lotus roots. The fresh lotus roots after being pretreated and vacuum sealed and packaged are placed into an ultrahigh-pressure vessel, ultrahigh-pressure treatment on the fresh lotus roots is implemented by controlling pressure, medium temperature and pressure maintaining time of an ultrahigh-pressure device in one to three times of a circulation process of pressurizing, pressure maintaining and pressure releasing. The method comprises the steps of: harvesting fresh lotus roots, shelling, stripping, dredging core, protecting color, vacuum packaging, ultrahigh-pressure processing, packaging, and cold storing and obtaining a finished product. Due to the adoption of the method, activities of poly (phenylene oxide) deprecated (PPO) and peroxidase (POD) in the fresh lotus roots can be effectively inhibited, the browning and quality changing of the fresh lotus roots during the processing and storage period can be prevented, and the preservation period of the fresh lotus roots can be prolonged to more than 3 months under the cold storage condition. The ultrahigh-pressure treatment is a physical process. Due to the adoption of the method, the appearance quality and the nutrients of the fresh lotus roots can be adequately reserved, the technique is simple, maneuverability is strong, energy consumption is small, the method is safe and pollution-free, and a novel way is developed for the lotus industry.
Description
Technical field
The invention belongs to the food preservative technology field, be specifically related to a kind of superhigh pressure fresh-keeping process that keeps bright lotus quality.
Background technology
Lotus seeds have another name called the pellet of water, genus Nymphaeceae Nelumbo (
Nymphaeaceae Nelumbo Adans), be the important special product economic resources of China.Lotus seeds contain the trace elements such as rich in protein, carbohydrate, vitamin and multiple essential amino acid, flavonoids, water-soluble polysaccharide, superoxide dismutase (SOD) and calcium, phosphorus, iron, zinc.Therefore, lotus seeds just are regarded as a kind of high-class healthy food since ancient times.The Li Shizhen (1518-1593 A.D.) Compendium of Material Medica is carried the effects such as lotus seeds " eaten clearing heat and cooling blood raw, poly-loose merit, the prepared food beneficial gas of making light of one's life by commiting suicide makes us keeping fit, and also has the loose stasis of blood of heat-clearing, mental-tranquilization, kidney tonifying, beneficial bone, cool blood ".Bright lotus is with its full exterior quality, fresh local flavor and comprehensively nutrition and looked at by consumer's parent.But the very easily brown stain at normal temperatures of bright lotus, rot, though under 3 ℃ ~ 6 ℃ frozen states also storage tolerance not, refrigeration storage period, generally about 30 days, commercial value was low.Compare with fresh lotus seed, the not only profile shrinkage of conventional dry lotus, the nutritive value that loses bright lotus and original local flavor, and be difficult for well-done, inconvenient eating, though the quick-frozen lotus seed of exploitation can effectively keep bright lotus quality in recent years, but its production and transport cost is high, has limited to a certain extent the development of freezing lotus.
Polyphenol oxidase (PPO) is the main enzyme that causes the fruits and vegetables enzymatic browning.According to the study, Xian Lianzhong contains abundant polyphenol oxidase and substrate aldehydes matter thereof, and take Jianning flower row lotus as example, the PPO activity is up to 480U/g.The enzymatic browning that PPO causes is the key factor of the bright lotus processing of impact and storing, therefore how to suppress the key problem in technology that the PPO activity is bright lotus cold storing and fresh-keeping.And peroxidase (POD) also has direct relation with the change of lotus seeds duration of storage local flavor.Although the tradition hot-working process has the enzyme effect of well going out, can make the lotus seed starch gelatinization and then affect the commodity values such as quality, color of bright lotus.
Super-pressure process technology (ultra high pressure, UHP) belongs to non-heating power process technology, is considered to a kind of very promising green processing technology.After it refers to food is packed, be placed in water or other liquid as the pressure system of transmission medium, apply the even higher processing pressure of 100MPa ~ 1000MPa, process at a certain temperature appropriate time, to reach sterilization, blunt enzyme and to improve the purposes such as functional characteristic of food.Ultra high pressure treatment is a physical process, only non-covalent bond is exerted an influence, and substantially do not destroy covalent bond, therefore not only can effectively kill microorganism in food and the various enzymes of passivation etc., and have no significant effect for the vitamin in food, pigment and flavor substance etc., even improve flavour of food products in food sterilizing, preservation and freshness, improve the aspects such as food tissue structure, functional characteristic and have wide market prospects.
Summary of the invention
The object of the present invention is to provide a kind of superhigh pressure fresh-keeping process that keeps bright lotus quality, method of the present invention can effectively suppress PPO, POD activity in bright lotus, prevent that bright lotus from changing in brown stain and the quality of processing and duration of storage, realizes bright lotus preservation term was extended to more than 3 months.Ultra high pressure treatment is a physical process, and the present invention has fully kept exterior quality and the nutritional labeling of bright lotus, and technique is simple, workable, energy consumption is little, safety non-pollution, for the lotus seeds industry is opened up a new approach.
For achieving the above object, the present invention adopts following technical scheme:
A kind of superhigh pressure fresh-keeping process that keeps bright lotus quality, to be placed in ultrahigh pressure vessel through pretreated bright lotus vacuum sealed package, by controlling pressure, medium temperature and the dwell time of extra-high tension unit, carry out the cyclic process of 1 ~ 3 pressurization, pressurize and pressure release bright lotus is carried out ultra high pressure treatment, the step of described method comprises: bright lotus gather, shell striping, logical core, protect look, vacuum packaging, ultra high pressure treatment, packing, refrigeration and obtain finished product.Described bright lotus is that maturity reaches 9 one-tenth above lotus seeds.
Concrete preparation process is as follows:
(1) bright lotus is gathered: select full grains, size evenly, without the fresh lotus seed of disease and pest as raw material;
(2) pretreatment: shell, striping, logical core, the water of namely putting into 10 ℃ ~ 15 ℃ after processing cleans, and drains standby;
(3) dipping protects look: will make colour protecting liquid after the composite color fixative dissolving, and pretreated bright lotus be put into the colour protecting liquid dipping immediately protect look, and time 10 ~ 20min, the rear cleaning of dipping drains; Described composite color fixative is ascorbic acid and citric acid, and in colour protecting liquid, the mass fraction of ascorbic acid is 0.05% ~ 0.20%, and the mass fraction of citric acid is 0.05% ~ 0.20%.
(4) vacuum packaging: will pack in polypropylene film bag through the bright lotus of color retention, and adopt vacuum packing machine to pack;
(5) ultra high pressure treatment: the bright lotus that vacuum packet is installed is placed in ultrahigh pressure vessel and carries out ultra high pressure treatment; Described ultra high pressure treatment condition: 20 ℃ ~ 40 ℃ of pressure 100MPa ~ 600MPa, liquid pressure medium temperature, 10 minutes ~ 30 minutes dwell time, the pressurize mode is the cyclic process of 1 ~ 3 pressurization, pressurize and pressure release.
(6) packing: with the packaging bag of packing into of the bright lotus after ultra high pressure treatment, vacuum seal;
(7) refrigeration: packaged bright lotus is preserved under 3 ℃ ~ 6 ℃ refrigerated conditions.
Remarkable advantage of the present invention is:
(1) than traditional hot-working process, the super-pressure process technology belongs to non-hot-working process, and super-pressure is a physical process, only acts on non-covalent bond, and covalent bond is not destroyed substantially.Therefore, in effective killing microorganisms and inactive enzyme, the natural flavour mountaineous and nutrition that can better keep food.The present invention has fully kept the original quality characteristic of bright lotus, but preservation is more than 3 months under 3 ℃ ~ 6 ℃ conditions, and instant has commercial value.
(2) ultra high pressure treatment is the liquid compressibility process, be easy to control, and safety non-pollution, and need not to provide energy reserving pressure after reaching setting pressure, less energy consumption has promotional value.
The specific embodiment
A kind of superhigh pressure fresh-keeping process that keeps bright lotus quality, concrete steps are as follows:
(1) bright lotus is gathered: select full grains, size evenly, without the fresh lotus seed of disease and pest as raw material;
(2) pretreatment: shell, striping, logical core, namely put into water after processing and clean, drain standby;
(3) dipping protects look: will make colour protecting liquid after the composite color fixative dissolving, and pretreated bright lotus be put into the colour protecting liquid dipping immediately protect look, and time 10 ~ 20min, the rear cleaning of dipping drains;
(4) vacuum packaging: will carry out vacuum packaging through the bright lotus of color retention;
(5) ultra high pressure treatment: the bright lotus that vacuum packet is installed is placed in ultrahigh pressure vessel and carries out ultra high pressure treatment;
(6) packing: with the packaging bag of packing into of the bright lotus after ultra high pressure treatment, vacuum seal;
(7) refrigeration: packaged bright lotus is preserved under refrigerated condition.
Putting into 10 ℃ ~ 15 ℃ water after the logical core of bright lotus in step (2) cleans.
Described in step (3), dipping protects look, and composite color fixative is ascorbic acid, citric acid, and its weight ratio that accounts for colour protecting liquid is respectively 0.05% ~ 0.20% ascorbic acid, 0.05% ~ 0.20% citric acid.
Vacuum packaging described in step (4) will be for packing in polypropylene film bag through the bright lotus of color retention, and the employing vacuum packing machine packs.
Ultra high pressure treatment described in step (5) is 20 ℃ ~ 40 ℃ of pressure 100MPa ~ 600MPa, liquid pressure medium temperature, and 10 minutes ~ 30 minutes dwell time, the pressurize mode is the cyclic process of 1 ~ 3 pressurization, pressurize and pressure release.
Refrigerated storage temperature described in step (7) is 3 ℃ ~ 6 ℃.
Be below several specific embodiment of the present invention, further illustrate the present invention, but the present invention is not limited only to this enforcement.
Embodiment 1
(1) bright lotus is gathered: take " building lotus " as raw material, and full grains, size is even, and without disease and pest, maturity is more than 9 one-tenth;
(2) pretreatment: manually shell, striping, logical core, namely put into 10 ℃ ~ 15 ℃ water after processing and clean, drain standby;
(3) dipping protects look: make colour protecting liquid after quantitatively taking composite color fixative (0.1% ascorbic acid+0.1% citric acid) dissolving, pretreated bright lotus is put into the colour protecting liquid dipping immediately protect look, and time 10min, the rear cleaning of dipping drains;
(4) vacuum packaging: will carry out vacuum packaging through the bright lotus of color retention;
(5) ultra high pressure treatment: the bright lotus that vacuum packet is installed is placed in ultrahigh pressure vessel and carries out ultra high pressure treatment, 30 ℃ of processing pressure 500MPa, liquid pressure medium temperature, 1 continuous pressure, pressurize pressure release after 5 minutes;
(6) packing: with the packaging bag of packing into of the bright lotus after ultra high pressure treatment, vacuum seal;
(7) refrigeration: packaged bright lotus is refrigerated under 4 ℃.
Embodiment 2
(1) bright lotus is gathered: take " building lotus " as raw material, and full grains, size is even, and without disease and pest, maturity is more than 9 one-tenth;
(2) pretreatment: manually shell, striping, logical core, namely put into 10 ℃ ~ 15 ℃ water after processing and clean, drain standby;
(3) dipping protects look: make colour protecting liquid after quantitatively taking composite color fixative (0.15% ascorbic acid+0.1% citric acid) dissolving, pretreated bright lotus is put into the colour protecting liquid dipping immediately protect look, and time 15min, the rear cleaning of dipping drains;
(4) vacuum packaging: will carry out vacuum packaging through the bright lotus of color retention;
(5) ultra high pressure treatment: the bright lotus that vacuum packet is installed is placed in ultrahigh pressure vessel and carries out ultra high pressure treatment, 40 ℃ of processing pressure 100MPa, liquid pressure medium temperature, be pressurized to for the first time pressure release after 100MPa and pressurize 10min, be pressurized to for the second time pressure release after 100MPa and pressurize 10min;
(6) packing: with the packaging bag of packing into of the bright lotus after ultra high pressure treatment, vacuum seal;
(7) refrigeration: packaged bright lotus is refrigerated under 4 ℃.
Embodiment 3
(1) bright lotus is gathered: take " building lotus " as raw material, and full grains, size is even, and without disease and pest, maturity is 9 one-tenth;
(2) pretreatment: manually shell, striping, logical core, namely put into 10 ℃ ~ 15 ℃ water after processing and clean, drain standby;
(3) dipping protects look: make colour protecting liquid after quantitatively taking composite color fixative (0.2% ascorbic acid+0.2% citric acid) dissolving, pretreated bright lotus is put into the colour protecting liquid dipping immediately protect look, time 20min drains after dipping;
(4) vacuum packaging: will carry out vacuum packaging through the bright lotus of color retention;
(5) ultra high pressure treatment: the bright lotus that vacuum packet is installed is placed in ultrahigh pressure vessel and carries out ultra high pressure treatment, 35 ℃ of liquid pressure medium temperature, be pressurized to for the first time 100MPa and not pressure release of pressurize 10min, be pressurized to for the second time 200MPa and not pressure release of pressurize 5min, be pressurized to for the third time pressure release after 300MPa and pressurize 3min;
(6) packing: with the packaging bag of packing into of the bright lotus after ultra high pressure treatment, vacuum seal;
(7) refrigeration: packaged bright lotus is refrigerated under 4 ℃.
The above is only preferred embodiment of the present invention, and all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (1)
1. superhigh pressure fresh-keeping process that keeps bright lotus quality, it is characterized in that: will be placed in ultrahigh pressure vessel through pretreated bright lotus vacuum sealed package, by controlling pressure, medium temperature and the dwell time of extra-high tension unit, carry out the cyclic process of 1 ~ 3 pressurization, pressurize and pressure release bright lotus is carried out ultra high pressure treatment, the step of described method comprises: bright lotus gather, shell striping, logical core, protect look, vacuum packaging, ultra high pressure treatment, packing, refrigeration and obtain finished product;
Described bright lotus is that maturity reaches 9 one-tenth above lotus seeds;
Concrete preparation process is as follows:
(1) bright lotus is gathered: select full grains, size evenly, without the fresh lotus seed of disease and pest as raw material;
(2) pretreatment: shell, striping, logical core, the water of namely putting into 10 ℃ ~ 15 ℃ after processing cleans, and drains standby;
(3) dipping protects look: will make colour protecting liquid after the composite color fixative dissolving, and pretreated bright lotus be put into the colour protecting liquid dipping immediately protect look, and time 10 ~ 20min, the rear cleaning of dipping drains;
(4) vacuum packaging: will pack in polypropylene film bag through the bright lotus of color retention, and adopt vacuum packing machine to pack;
(5) ultra high pressure treatment: the bright lotus that vacuum packet is installed is placed in ultrahigh pressure vessel and carries out ultra high pressure treatment;
(6) packing: with the packaging bag of packing into of the bright lotus after ultra high pressure treatment, vacuum seal;
(7) refrigeration: packaged bright lotus is preserved under refrigerated condition;
Described in step (3), composite color fixative is ascorbic acid and citric acid, and in colour protecting liquid, the mass fraction of ascorbic acid is 0.05% ~ 0.20%, and the mass fraction of citric acid is 0.05% ~ 0.20%;
Ultra high pressure treatment condition described in step (5): 20 ℃ ~ 40 ℃ of pressure 100MPa ~ 600MPa, liquid pressure medium temperature, 10 minutes ~ 30 minutes dwell time, the pressurize mode is the cyclic process of 1 ~ 3 pressurization, pressurize and pressure release;
Refrigerated storage temperature described in step (7) is 3 ℃ ~ 6 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210146582 CN102630742B (en) | 2012-05-14 | 2012-05-14 | Ultrahigh-pressure refreshing method for maintaining quality of fresh lotus roots |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210146582 CN102630742B (en) | 2012-05-14 | 2012-05-14 | Ultrahigh-pressure refreshing method for maintaining quality of fresh lotus roots |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102630742A CN102630742A (en) | 2012-08-15 |
| CN102630742B true CN102630742B (en) | 2013-06-05 |
Family
ID=46615460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210146582 Active CN102630742B (en) | 2012-05-14 | 2012-05-14 | Ultrahigh-pressure refreshing method for maintaining quality of fresh lotus roots |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102630742B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102894074A (en) * | 2012-10-08 | 2013-01-30 | 南昌大学 | Lotus nut color protecting and freshness keeping method |
| CN103168829A (en) * | 2013-04-18 | 2013-06-26 | 重庆博智高压科技有限公司 | Ultrahigh-pressure preservation method of brasenia schrebei |
| CN103636743B (en) * | 2013-12-25 | 2016-04-27 | 长沙理工大学 | Refrigeration and preservation method of fresh lotus with shell |
| CN105410589A (en) * | 2015-11-26 | 2016-03-23 | 杨志强 | Method for processing fresh keeping filling at superhigh pressure |
| CN105941601A (en) * | 2016-04-28 | 2016-09-21 | 中国农业大学 | Method for producing fresh-cut fruits and vegetables by using gas combined with ultra-high pressure technology |
| CN106136019A (en) * | 2016-05-18 | 2016-11-23 | 彝良山益宝生物科技有限公司 | A kind of preparation method of superhigh pressure fresh-keeping Rhizoma Gastrodiae |
| CN106333289A (en) * | 2016-08-26 | 2017-01-18 | 中国农业大学 | Non-thermal processing method for Athyrium multidentatum(Doll.) Ching wild vegetable |
| CN106742371A (en) * | 2016-11-22 | 2017-05-31 | 解慧勇 | A kind of Chinese herbal medicine normal temperature fresh-keeping method |
| CN107950650A (en) * | 2017-12-11 | 2018-04-24 | 福建农林大学 | A kind of processing method of quick freezed yam |
| CN109497371A (en) * | 2018-11-26 | 2019-03-22 | 山西中医药大学 | A kind of Wild rose hip juice drink and its production method |
| CN112205460A (en) * | 2020-09-28 | 2021-01-12 | 甘肃省农业科学院农产品贮藏加工研究所 | Method for improving quality of quick-frozen oolong heads under ultrahigh pressure |
| CN113273664B (en) * | 2021-06-11 | 2023-01-10 | 天津科技大学 | Ultrahigh pressure technology-based pear juice color protection method |
| CN114946930A (en) * | 2021-12-27 | 2022-08-30 | 贺州学院 | Fresh-keeping packaging method for fresh-cut water chestnut |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1600149A (en) * | 2003-09-28 | 2005-03-30 | 北京高才科技开发有限公司 | Extra high-pressure method for preserving foodstuff |
| CN101731310A (en) * | 2008-11-21 | 2010-06-16 | 李庆领 | Ultrahigh isostatic pressing sterilization and refreshment method of asparagus |
| CN101579013B (en) * | 2009-06-11 | 2011-12-14 | 福建农林大学 | Microwave vacuum drying process for lotus seed |
-
2012
- 2012-05-14 CN CN 201210146582 patent/CN102630742B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102630742A (en) | 2012-08-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102630742B (en) | Ultrahigh-pressure refreshing method for maintaining quality of fresh lotus roots | |
| CN104872564B (en) | A kind of production method of non-fried puffing cool humid zone crisp chip | |
| CN103907845B (en) | Processing method of novel nutrition blended cedrela sinensis | |
| CN103082273B (en) | Tricholoma matsutake dried product with nutrients and flavor fully preserved, and preparation method thereof | |
| CN102499278A (en) | Fresh-keeping technology of microwave enzyme inactivation for leafy vegetables | |
| CN101965860B (en) | Method for processing quick-frozen fresh lotus | |
| CN103636743B (en) | Refrigeration and preservation method of fresh lotus with shell | |
| CN101744045A (en) | Fresh bamboo shoot coating preservative prepared by edible material | |
| CN101797032A (en) | Method for frying purple yam under vacuum condition | |
| Jiang et al. | Effect of modified atmosphere packaging combined with plant essential oils on preservation of fresh-cut lily bulbs | |
| CN103876202A (en) | Method for processing fresh castanea mollissima packaged products | |
| CN106305988A (en) | United fresh-keeping method for prolonging storage period of Xianghe colocasia esculenta | |
| CN104273215A (en) | Processing method for keeping Chinese yam fresh | |
| CN101919440B (en) | Natural preserving agent of day lilies, preparation method and application method thereof | |
| CN105053873B (en) | Preparation method of black tomato freeze-dried powder | |
| CN103564420B (en) | A kind of production technology of canned mushroom | |
| CN104126654A (en) | Blueberry preservation method | |
| CN103315241A (en) | Preparation method of canned pear in syrup | |
| CN103636773B (en) | Preservation and freshness-keeping method for winter jujubes | |
| CN105123902A (en) | Fresh-keeping method of fresh lotus seedpod | |
| CN112137010A (en) | Biological color-protecting and fresh-keeping method for fresh green peppers | |
| CN106962453A (en) | A kind of freeze preservation method of instant natural car shrimp living | |
| CN105614775A (en) | Preparing method for freeze-dried waxberry buccal tablets | |
| CN102415439A (en) | Method for preserving red date by coating | |
| CN103355466A (en) | Method for making preserved potatoes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |