CN103461464B - Method for processing dewatered tomatoes - Google Patents
Method for processing dewatered tomatoes Download PDFInfo
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- CN103461464B CN103461464B CN201310408665.1A CN201310408665A CN103461464B CN 103461464 B CN103461464 B CN 103461464B CN 201310408665 A CN201310408665 A CN 201310408665A CN 103461464 B CN103461464 B CN 103461464B
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Abstract
The invention relates to a method for processing dewatered tomatoes, and belongs to the technical field of food processing. The method comprises the steps: sorting, cleaning, blanching, machine-cutting, spin-drying, stoving, cooling, sorting by a machine, manually sorting, and packaging. Compared with the prior art, the method has the advantages of high peeling efficiency and small raw material waste because the tomatoes are cleaned and peeled by adopting ultrasonic waves.
Description
Technical field
The present invention relates to a kind of processing method of dewatered tomato, belong to food processing technology field.
Background technology
Dehydrated vegetables refers to except a certain amount of moisture and preserves the original dried product learnt through hearsay of vegetables as far as possible.The effect of dehydration is the moisture in vegetables to reduce, and improves the concentration of solable matter, suppresses microbial activities, and the activity of the contained enzyme of vegetables itself is also suppressed simultaneously, and product can be preserved for a long time.
What the drying Application comparison of current dewatering vegetable was many is heated-air drying dehydration and vacuum freezedrying dehydration, wherein heated-air drying dewatering process is as follows: 1, raw material selection: select to have the vegetable variety enriching meat, excellent roguing be should strictly select before dehydration, ill worm, rotten, shrivelled part rejected.Be advisable with eighty per cant maturity, overdone or not yet done also should choose, except melon remove seed flesh except, other types vegetables can be rinsed well with clear water, then put and dry in the cool, but should not tan by the sun in the sun.2, cut, blanching: the raw material of wash clean to be cut into slices respectively according to product requirement, the shape such as silk, bar.When precooking, different because raw material is different, easily well-done putting in boiling water scalds, and not easily well-done putting in boiling water slightly boils a moment, and general blanching time is 2 ~ 4 minutes.3, cooling, draining: the vegetables after process of precooking should carry out cooling (general employing cold water shower) immediately, make it be down to normal temperature rapidly.After cooling, for shortening drying time, available centrifuge water dumping, also with simple hand method pressure drop, after water drop is most, just can spreads air dry a little out, toast in order to sabot.4, dry: moisture content when should determine different temperature, time, color and luster according to different cultivars and dry.Dry and generally carry out in drying room.Drying room roughly has three kinds: the first simple and easy drying room, adopts adverse current forced air drying; The second is the drying room combined with two layers of twin tunnel, concurrent-countercurrent; The third is van-type stainless steel air flow dryer, and bake out temperature scope is 65 DEG C ~ 85 DEG C, and point different temperatures is dry, progressively lowers the temperature.When adopting first, second kind of drying room, spread equably by vegetables in dish, be then put on the shelf established in advance, keep room temperature about 50 DEG C, constantly will stir simultaneously, make it accelerate drying, general drying time is 5 hours.5, go-on-go, packaging: dehydrated vegetables reaches food hygiene law requirement through inspection, can be divided in polybag, and carry out sealing, casing, then go on the market.
At present, traditional skinning machine adopts drum-type seperator rolling friction peeling, because the shape size of raw material differs, so such peeling mode wastage of material rate is very high, and peeling efficiency is low, and can not remove the peel at some distorted regions.Especially the vegetables that tomato is such, in its pericarp, content of cellulose is high, and mouthfeel is poor, and its pulp is softer, therefore removes the peel very difficult.
Summary of the invention
The technical problem that the present invention solves is: the processing method proposing a kind of dewatered tomato, and the method adopts Ultrasonic Cleaning, grit abrasion peeling, thus improves peeling efficiency, minimizing wastage of material.
In order to solve the problems of the technologies described above, the technical scheme that the present invention proposes is: a kind of processing method of dewatered tomato, comprises the following steps:
(1) choose raw tomatoes material, reject the defective products in tomato;
(2) Ultrasonic Cleaning peeling: the tomato through selection is placed in the saturated aqueous common salt containing diameter 1.5 ~ 2.0mm gravel, utilize ultrasonic generator to apply ultrasonic wave to described saturated aqueous common salt liquid, hyperacoustic frequency and the sound intensity are 25KHZ ~ 50KHZ and 1.5 ~ 3W/cm respectively
2, 60 to 150 seconds duration, then tomato taking-up clear water is rinsed, and stalk;
(3) blanching cools: tomato 3 ~ 5 min removed the peel through cleaning with the hot water blanching of temperature 95 ~ 100 DEG C, then pulls out to insert in cold water to cool;
(4) machine is cut: use cutting machine, by diced for the tomato of blanching;
(5) dry: the tomato fourth cut is sent to centrifuge and dry;
(6) first drying: the tomato fourth after centrifuge dripping is put into baking oven and dries, treatment temperature 75 ± 5 DEG C, processing time 2 ~ 4h;
(7) cool: the tomato fourth after drying is used air blast quenching, makes temperature be down to less than 40 DEG C;
(8) first time machine choosing: according to the granularity requirements of product, select the screen cloth of dimension to screen tomato fourth, then carry out magnetic separation, removing light impurity, metal object, powder and rectangular;
(9) manually sort: mainly remove foreign matter, worm fly, Huang Ye, Lao Genjiqian road sieve not removed bar;
(10) weigh, pack.
Improving further of technique scheme is: after described step (6), if the water content of tomato fourth is higher than 7%, then carry out secondary drying; Bake out temperature 70 ± 5 DEG C, processing time 2 ~ 4h, makes tomato fourth water content lower than 7%.
Improving further of technique scheme is: also have the choosing of second time machine after described step (9): use screening, selection by winnowing, magnetic separation, metal detection, removes the hair, mudstone and the metal object that manually sort and fail to remove.
Improving further of technique scheme is: after described step (10), also have selective examination: carry out the requirement inspection that material moisture content, microorganism and client specify; Warehouse-in after selective examination is deposited: material storage temperature≤12 DEG C, relative humidity≤70%, warehouse for finished product need clean, drying, health, directly not expose to sunlight, line identifier of going forward side by side.
Improving further of technique scheme is: in described step (2), described ultrasonic generator is piezoelectric-type ultrasonic wave generating device.
Improving further of technique scheme is: in described step (7), and described manually sorting is carried out in the toilet that room temperature controls 20 ± 2 DEG C and relative humidity control≤50%.
Improving further of technique scheme is: described defective products is straw, metal, hair and foreign matter, and starts to decay and immature tomato.
The invention has the beneficial effects as follows:
The processing method of dewatered tomato provided by the invention adopts grit, saturated aqueous common salt coordinates with ultrasonic wave, and (density is at 1.2 ~ 1.4g/cm for the grit choosing compared with lightweight
3between), grit is suspended in saturated aqueous common salt, under hyperacoustic vibrations, continuous shock tomato surface, in the short time, clean being somebody's turn to do can be removed in tomato surface, the processing method of dewatered tomato provided by the invention adopts Ultrasonic Cleaning peeling, and peeling efficiency is high, wastage of material is few.
Detailed description of the invention
Embodiment
A processing method for dewatered tomato, comprises the following steps:
(1) choose raw tomatoes material, reject the defective products in tomato: the foreign matters such as that rot, not mature immature tomato, straw, metal, hair;
(2) Ultrasonic Cleaning peeling: the tomato through selection is placed in the saturated aqueous common salt containing diameter 1.5 ~ 2.0mm gravel, utilize piezoelectric-type ultrasonic wave generating device to apply ultrasonic wave to described saturated aqueous common salt liquid, hyperacoustic frequency and the sound intensity are 25KHZ ~ 50KHZ and 1.5 ~ 3W/cm respectively
2, 60 to 150 seconds duration, then tomato taking-up clear water is rinsed;
(3) blanching cools: tomato ~ 5 min removed the peel through cleaning with the hot water blanching of temperature 95 ~ 100 DEG C, then pulls out to insert in cold water to cool;
(4) machine is cut: use cutting machine, by diced for the tomato of blanching;
(5) dry: the tomato fourth cut is sent to centrifuge and dry;
(6) first drying: the tomato fourth after centrifuge dripping is put into baking oven and dries, treatment temperature 75 ± 5 DEG C, processing time 2 ~ 4h;
(7) secondary drying: by water content in upper step higher than 7% batch tomato fourth put into baking oven and dry, treatment temperature 70 ± 5 DEG C, processing time 2 ~ 4h, guarantees that water content is lower than 7%;
(8) cool: the tomato fourth after drying is used air blast quenching, makes temperature be down to less than 40 DEG C;
(9) first time machine choosing: according to the granularity requirements of product, select the screen cloth of dimension to screen the tomato fourth of drying, then carry out magnetic separation, removing light impurity, metal object, powder and rectangular;
(10) manually sort: mainly remove foreign matter, worm fly, Huang Ye, Lao Genjiqian road sieve not removed bar;
(11) second time machine choosing: use screening, selection by winnowing, magnetic separation, metal detection, main removal manually sorts hair, mudstone and the metal object failing to remove.
(12) weigh, pack.
Originally be in embodiment, in step (10), manually sorting is carry out in the toilet that room temperature controls 20 ± 2 DEG C and relative humidity control≤50%; After having sorted, use uviol lamp, ozone generator carry out disinfection to the room of sorting at every turn.
Also spot-check after step (12): carry out the requirement inspection that material moisture content, microorganism and client specify; Warehouse-in after selective examination is deposited: material storage temperature≤12 DEG C, relative humidity≤70%, warehouse for finished product need clean, drying, health, directly not expose to sunlight, line identifier of going forward side by side.
In step (2) first small lot trial run, confirms this batch of design parameter definite value according to trial run situation furnishing, then produces in enormous quantities, and monitor the condition of production at any time, and adjust parameter.
Originally be that grit in embodiment is chosen compared with lightweight glutenite (density is 1.2 ~ 1.4g/cm
3), through smashing the particle of going into 1.5mm ~ 2.0mm, often running 6 ~ 12 hours and changing once.
The concrete technical scheme be not limited to described in above-described embodiment of the present invention, all employings are equal to replaces the protection domain that the technical scheme formed is application claims.
Claims (6)
1. a processing method for dewatered tomato, is characterized in that comprising the following steps:
(1) choose raw tomatoes material, reject the defective products in tomato; Described defective products is straw, metal, hair and foreign matter, and starts to decay and immature tomato;
(2) Ultrasonic Cleaning peeling: being placed in by the tomato through selection containing diameter 1.5 ~ 2.0mm, density is the saturated aqueous common salt of the gravel of 1.2 ~ 1.4g/ cubic centimetre, utilize ultrasonic generator to apply ultrasonic wave to described saturated aqueous common salt liquid, hyperacoustic frequency and the sound intensity are 25kHz ~ 50kHz and 1.5 ~ 3W/cm respectively
2, 60 to 150 seconds duration, then tomato taking-up clear water is rinsed, and stalk;
(3) blanching cools: tomato 3 ~ 5 min removed the peel through cleaning with the hot water blanching of temperature 95 ~ 100 DEG C, then pulls out to insert in cold water to cool;
(4) machine is cut: use cutting machine, by diced for the tomato of blanching;
(5) dry: the tomato fourth cut is sent to centrifuge and dry;
(6) first drying: the tomato fourth after centrifuge dripping is put into baking oven and dries, treatment temperature 75 ± 5 DEG C, processing time 2 ~ 4h;
(7) cool: the tomato fourth after drying is used air blast quenching, makes temperature be down to less than 40 DEG C;
(8) first time machine choosing: according to the granularity requirements of product, select the screen cloth of dimension to screen tomato fourth, then carry out magnetic separation, removing light impurity, metal object, powder and rectangular;
(9) manually sort: remove the bar that foreign matter, worm fly, Huang Ye, old root and preceding working procedure are not removed;
(10) weigh, pack.
2. the processing method of dewatered tomato according to claim 1, is characterized in that: after described step (6), if the water content of tomato fourth is higher than 7%, then carries out secondary drying; Bake out temperature 70 ± 5 DEG C, processing time 2 ~ 4h, makes tomato fourth water content lower than 7%.
3. the processing method of dewatered tomato according to claim 1, it is characterized in that: also have the choosing of second time machine after described step (9): use screening, selection by winnowing, magnetic separation, metal detection, remove the hair, mudstone and the metal object that manually sort and fail to remove.
4. the processing method of dewatered tomato according to claim 1, is characterized in that: after described step (10), also have selective examination: carry out the requirement inspection that material moisture content, microorganism and client specify; Warehouse-in after selective examination is deposited: material storage temperature≤12 DEG C, relative humidity≤70%, warehouse for finished product need clean, drying, health, directly not expose to sunlight, line identifier of going forward side by side.
5., according to the processing method of arbitrary described dewatered tomato of Claims 1 to 4, it is characterized in that: in described step (2), described ultrasonic generator is piezoelectric-type ultrasonic wave generating device.
6. according to the processing method of arbitrary described dewatered tomato of Claims 1 to 4, it is characterized in that: in described step (9), described manually sorting is carried out in the toilet that room temperature controls 20 ± 2 DEG C and relative humidity control≤50%.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104938612A (en) * | 2015-07-17 | 2015-09-30 | 句容市老方葡萄科技示范园 | Raisin processing method |
| CN106595231A (en) * | 2016-12-14 | 2017-04-26 | 张世文 | Grain drying facility for grain processing |
| CN107996684A (en) * | 2017-12-26 | 2018-05-08 | 安徽省东乾食品有限公司 | A kind of preparation method of the dewatered tomato based on heated-air drying |
| CN108419966B (en) * | 2018-03-26 | 2021-08-03 | 湖南化工职业技术学院（湖南工业高级技工学校） | Tomato and kiwi fruit composite fruit and vegetable juice and production process thereof |
| CN109590050A (en) * | 2018-12-04 | 2019-04-09 | 唐山市如辉玉米产品技术开发有限公司 | Refine the production technology of hominy grits |
| CN109549062A (en) * | 2018-12-20 | 2019-04-02 | 西南大学 | A kind of ultrasonic wave added lye tomato barking method and product |
| CN114886130A (en) * | 2022-04-08 | 2022-08-12 | 临沂兴诺食品有限公司 | Vegetable dehydration processing technology |
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