CN101791095B - Comprehensive utilization method of wasted onion peels - Google Patents
Comprehensive utilization method of wasted onion peels Download PDFInfo
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- CN101791095B CN101791095B CN2010100463024A CN201010046302A CN101791095B CN 101791095 B CN101791095 B CN 101791095B CN 2010100463024 A CN2010100463024 A CN 2010100463024A CN 201010046302 A CN201010046302 A CN 201010046302A CN 101791095 B CN101791095 B CN 101791095B
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- Preparation Of Fruits And Vegetables (AREA)
- Coloring Foods And Improving Nutritive Qualities (AREA)
- Storage Of Fruits Or Vegetables (AREA)
Abstract
The invention relates to a comprehensive utilization method of wasted onion peels. The method comprises the following steps: firstly, sorting and rinsing onion peels and then performing dewatering through vibration to obtain dewatered onion peels; secondly, feeding the dewatered onion peels into a vacuum freeze dryer so as to freeze dry the onion peels until the water content of the freeze-dried object is less than 7 percent to obtain the freeze-dried onion peels; thirdly, crushing the freeze-dried onion peels to obtain the onion peel powder; and finally packaging the onion peel powder to obtain the onion peel powder product. The comprehensive utilization method produces the onion peel powder by combining vacuum freeze drying technology and jet milling technology and therefore ensures that the thermally sensitive nutritive material is not decomposed or lost, maintains the nutritive materials in the onion skin and peel, reduces the production cost and ensures the product quality.
Description
Technical field
The present invention relates to onion deep processing field, relate in particular to the method for comprehensive utilization of wasted onion peels.
Background technology
Onion has another name called ball green onion, round onions, Onion, onion, belongs to 2 years these plants of sward of Liliaceae allium, and it is as the history in existing 5,000 years of vegetables.Onion distributes very wide in China, planting area mainly is distributed in ground such as Gansu, the Inner Mongol, Xinjiang, Shandong.Though the onion smell is pungent but nutritious, onion bulb stem and leaf contain a kind of oil volatile matter that is called allyl sulfides, have acid, and this material can be cold-resistant, resists influenza virus, also has stronger bactericidal action; The extract of onion can suppress multiple microbial growths such as staphylococcus, streptococcus, arc coccus, bacillus.Modern medicine proves, and onion has that anti-inflammatory is antibacterial, prevention chronic bronchitis, angiocardiopathy preventing, the effect of minimizing artery sclerosis.
Onion is edible part with the meat bulb, and it is nutritious.According to surveying and determination, the bright onion bulb of per 100 grams contains about moisture 88 grams, protein 1-1.8 gram, fatty 0.3-0.5 gram; Carbohydrate 5-8 gram, crude fibre 0.5 gram, heat 130 is done burnt, 12 milligrams of calcium; 46 milligrams in phosphorus, 0.6 milligram of iron, 14 milligrams of vitamin Cs, 0.5 milligram of niacin; 0.05 milligram in riboflavin, 0.08 milligram of thiamine, trailing plants L is plain 1.2 milligrams recklessly.Also contain caffeic acid, sinapic acid, cinnamic acid, citrate, polysaccharide and several amino acids.Be rich in allicin, mercaptan, trisulfide etc. in the volatile oil.Bud, pollen, flower pesticide etc. all contain carrotene.The tear composition that causes of onion is a cycloalliin, the precursor that contained S-acrylic-L-half dirty propylhomoserin sulfohydrate is a cycloalliin in the onion, and under alkali condition, but cyclization becomes cycloalliin.
Local in Jiuquan; Because outlet or for satisfying different regions, Various Seasonal people demand to onion; Annual have 55% fresh onion to be processed to dehydrated onion to sell approximately, but when processing onion goods, must the crust of bright onion be separated; Unnecessary onion-skin slag is then wasted as waste material, and this waste accounts for about 5% of the bright onion total amount of dehydration.In 400,000 tons of the bright onions of year dehydration processing, will there be every year 20000 tons onion-skin slag to be wasted, with the 800 yuan of calculating per ton of bright onion, 1,600 ten thousand yuan huge waste will be arranged.Simultaneously, if a large amount of discarded onion-skin slags are not treated, not only pollute the environment but also waste resource.
Summary of the invention
Technical problem to be solved by this invention provides the method for comprehensive utilization of a kind of abundant nutrients, wasted onion peels that production efficiency is high.
For addressing the above problem, the method for comprehensive utilization of a kind of wasted onion peels of the present invention may further comprise the steps:
(1) the onion-skin slag is carried out vibrated and dehydrated after sorting, rinsing, obtain dehydrated onion skin slag;
(2) get into the vacuum freeze-drying machine after dehydrated onion skin slag is refrigerated to-28～-35 ℃, carry out lyophilization, be lower than 7%, obtain freeze-drying onion-skin slag until the lyophilized products water content;
(3) freeze-drying onion-skin slag at room temperature is crushed to 50～80 orders after, ultramicro grinding to 180～200 orders under 40～45 ℃ of temperature obtain the onion-skin powder again;
(4) with promptly getting onion-skin powder product after the onion-skin powder packing.
Cooling time in the said step (2) is 2～3 hours.
The temperature of heating plate of vacuum freeze-drying machine is 70～110 ℃ in the said step (2), and vacuum is 110～130Pa.
Relative air humidity≤40% when packing in the said step (4).
The present invention compared with prior art has the following advantages:
1, since the present invention with onion enterprise production discarded object---the onion-skin slag is a raw material; The new and high technology of utilizing the pulverizing of vacuum freeze-drying and air-flow to combine is produced the onion-skin powder; Guaranteed that the thermal sensitivity nutriment does not decompose, do not lose in the product; At utmost kept the nutritional labeling in onion crust and the skin slag, so the onion-skin pink colour of gained of the present invention pool evenly, protein wherein, vitamins and other nutritious components content are higher than dehydrated onion product (referring to table 1); Make the product holding time of adopting the inventive method to obtain be higher than the onion powder that utilizes onion to produce simultaneously.
Table 1: the dehydrated onion powder and the onion-skin slag nutrition table of comparisons
| Sequence number | Interventions Requested | Dehydrated onion powder (every 100g contains g) | Onion-skin powder (every 100g contains g) |
| 1 | Protein | 5.5 | 30.76 |
| 2 | Fat | 0.4 | 0.01 |
| 3 | Moisture content | 9.1 | 10.43 |
| 4 | Ash content | 3.1 | 11.94 |
| 5 | Crude fibre | 5.7 | 27.35 |
| 6 | Cobastab 1(mg) | - | 0.15 |
| 7 | Vitamin C (mg) | 0.5 | 0.76 |
| 8 | Carotenoid (mg) | 20.0 | 2.58 |
| 9 | Potassium (g/kg) | 9.1 | 8.46 |
| 10 | Sodium (g/kg) | 7.7 | 1.85 |
| 11 | Calcium (g/kg) | 35.1 | 25 |
2, because the present invention utilizes the freeze drying production line to produce product of high quality and at a reasonable price to the onion-skin slag; Therefore, not only avoided environmental pollution simultaneously, improved resource utilization effectively in reservation onion original nutrient contents; And reduced production cost, guaranteed product quality.
3, because the present invention adopts vacuum freeze drying technology production freeze-drying onion-skin powder, therefore, improve production efficiency effectively, made the finished product yield rate reach 95%.
4, enforcement of the present invention; Not only promoted the onion secondary industry; Promotion China food processing industry develops towards the direction of deep processing, convenient purification, natural health; And strengthened the international competitiveness and the occupation rate of market of other dehydrated vegetables industries of China, also can increase peasant's income simultaneously.
The specific embodiment
A kind of method of comprehensive utilization of wasted onion peels may further comprise the steps:
(1) the onion-skin slag is adopted artificial separation, remove behind the impurity water that is equal to or less than 250BAR with pressure it is carried out abundant rinsing; Send into then in the ternary dehydrated vegetables vibratory sieve that Xinxiang City's promise lion vibrating machine factory produces and carry out vibrated and dehydrated, obtain dehydrated onion skin slag.
(2) dehydrated onion skin slag is refrigerated to-28～-35 ℃ in the quick freezing repository that Bo Ze refrigerating equipment corporation, Ltd in Beijing produces; Get into the JDG type vacuum freeze-drying machine that Lanzhou Kejin Vacuum Freeze Drying Technology Co., Ltd. produces after freezing 2～3 hours; At the temperature of heating plate of vacuum freeze-drying machine is that 70～110 ℃, vacuum are to carry out freeze-drying under the condition of 110～130Pa; The dried material surface temperature is no more than 60 ℃ during freeze-drying; Be lower than at 7% o'clock until the lyophilized products water content after the lyophilization and finish freeze-drying, obtain freeze-drying onion-skin slag.
(3) after the grates vegetables machine of freeze-drying onion-skin slag at room temperature being produced with prestige machinery Co., Ltd of Jiangsu section is crushed to 50～80 orders; Get into again in the collision type airslide disintegrating mill of Sichuan Mianyang Gaoxin Zone Juzi Ultramicro Technology Co., Ltd. production; Adopt water circulation system control to be stabilized in and carry out ultramicro grinding under 40～45 ℃; Be crushed to 180～200 orders, obtain the onion-skin powder.
(4) the onion-skin powder is promptly being got onion-skin powder product after the packing under the environment of relative air humidity≤40%.
Claims (1)
1. the method for comprehensive utilization of a wasted onion peels may further comprise the steps:
(1) the onion-skin slag is carried out vibrated and dehydrated after sorting, rinsing, obtain dehydrated onion skin slag;
(2) get into the vacuum freeze-drying machine after dehydrated onion skin slag is refrigerated to-28～-35 ℃, carry out lyophilization, be lower than 7%, obtain freeze-drying onion-skin slag until the lyophilized products water content; Cooling time is 2～3 hours; The temperature of heating plate of vacuum freeze-drying machine is 70～110 ℃, and vacuum is 110～130Pa;
(3) freeze-drying onion-skin slag at room temperature is crushed to 50～80 orders after, ultramicro grinding to 180～200 orders under 40～45 ℃ of temperature obtain the onion-skin powder again;
(4) with promptly getting onion-skin powder product after the onion-skin powder packing; Relative air humidity during packing≤40%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100463024A CN101791095B (en) | 2010-01-02 | 2010-01-02 | Comprehensive utilization method of wasted onion peels |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100463024A CN101791095B (en) | 2010-01-02 | 2010-01-02 | Comprehensive utilization method of wasted onion peels |
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| CN101791095A CN101791095A (en) | 2010-08-04 |
| CN101791095B true CN101791095B (en) | 2012-07-25 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102181335B (en) * | 2011-04-11 | 2013-01-09 | 山东轻工业学院 | Purple skin onion wine and preparation process thereof |
| CN102342504B (en) * | 2011-08-23 | 2012-10-10 | 徐州绿之野生物食品有限公司 | Bio-fermentation onion skin extractum and production method thereof |
| CN102835634A (en) * | 2012-09-19 | 2012-12-26 | 民勤县潭龙食品有限公司 | Process for producing dried onion through dewatering |
| CN107549713A (en) * | 2017-09-27 | 2018-01-09 | 甘肃银河食品集团有限责任公司 | A kind of processing method of onion freeze-dried powder |
| WO2020099179A1 (en) * | 2018-11-16 | 2020-05-22 | Unilever N.V. | Onion flavour composition and method for the preparation thereof |
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