CN103478221B - Dehydrated pumpkin processing method - Google Patents
Dehydrated pumpkin processing method Download PDFInfo
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- CN103478221B CN103478221B CN201310408805.5A CN201310408805A CN103478221B CN 103478221 B CN103478221 B CN 103478221B CN 201310408805 A CN201310408805 A CN 201310408805A CN 103478221 B CN103478221 B CN 103478221B
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Abstract
The invention relates to a dehydrated pumpkin processing method, belonging to the technical field of food processing. The processing method comprises the steps of selecting raw pumpkin material, performing ultrasonic cleaning to peel off, blanching, cooling, cutting by a machine, drying, cooling, grading by a machine, performing steam explosion, drying, sorting and packaging. Compared with the prior art, the processing method adopts the ultrasonic cleaning to peel off, has high peeling-off efficiency and small waste amount of raw materials, and adopts steam explosion after drying of the raw materials, so as to reduce the transportation cost, achieve sanitary effect and good grinding effect.
Description
Technical field
The present invention relates to a kind of dehydration pumpkin processing method, belong to food processing technology field.
Background technology
Dehydrated vegetables refers to except a certain amount of moisture preserves the original dried product of learning 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.Dehydrated vegetables instant, water content is few, easily transport, storage time is long, can effectively regulate dish to produce dull and rush season.
According to the applicant understood, there is following problem in the process of existing dehydrated vegetables:
1, in the process of dehydrated vegetables, generally contain boiling manufacturing procedure, boiling is longer process time, generally, with between hour clocking, wastes energy and the time; Meanwhile, the step after boiling manufacturing procedure, need to can be used the dehydrated vegetables cooling after boiling, has further wasted the energy and time.
2, when processing dehydrated vegetables adopts low temperature drying, need in advance dehydrated vegetables cooling can be used, the production cycle is long, and production efficiency is low.
3, traditional skinning machine adopts drum-type seperator rolling friction peeling, after peeling, still has the problems such as raw material peeling efficiency is low, wastage of material is high.
Summary of the invention
The technical problem that the present invention solves is: propose the dehydration pumpkin processing method that a kind of production efficiency is high, the method can improve peeling efficiency, reduce wastage of material and cost of transportation.
In order to solve the problems of the technologies described above, the technical scheme that the present invention proposes is: a kind of dehydration pumpkin processing method, comprises the following steps:
(1) selection pumpkin raw material: select fresh pumpkin, reject the defective products in pumpkin;
(2) Ultrasonic Cleaning peeling: will be placed in the sodium chloride solution that contains diameter 1.0～5mm gravel through the pumpkin of selection, utilize ultrasonic generator to apply ultrasonic wave to described sodium chloride solution, hyperacoustic frequency and the sound intensity are respectively 5KHz～1MHz and 0.2～10W/cm
2;
(3) blanching is cooling: the pumpkin of removing the peel through cleaning with the hot water blanching of 95～100 DEG C of temperature 3～5 minutes, then pull nature out cooling;
(4) machine is cut: use cutting machine that the pumpkin of blanching is cut into pumpkin fourth;
(5) dry: the pumpkin fourth after machine is cut is put into baking oven dries, 75 ± 5 DEG C for the treatment of temperatures, processing time 2-4 hour;
(6) cooling: the pumpkin fourth after drying to be used to air blast quenching, in 15 minutes, make temperature be down to below 40 DEG C;
(7) machine choosing: according to the granularity requirements of product, the pumpkin fourth after the screen cloth of selection dimension is cut machine is screened, and then carries out magnetic separation, removes light impurity, metal object, powder and rectangular;
(8) steam blasting: pumpkin fourth is sent into steam blasting device and carry out steam blasting, the pressure of steam blasting is 1.0～2MPa, temperature while controlling the steam blasting of steam blasting device is 200～250 DEG C, and dimension presses 1～5 minute, and the pumpkin fourth after steam blasting is down to room temperature;
(9) dry: collect the pumpkin fourth after steam blasting, pumpkin fourth is placed in vacuum freeze dryer, controlling temperature is-80 DEG C, and vacuum is 133 × 10
-3mBar, drying time 2～4h, moisture≤7.0% in raw material;
(10) go-on-go packaging: collect dried pumpkin fourth and pack.
Further improving of technique scheme is: after described (10) step completes, be also provided with
Artificial selective examination: the requirement that pumpkin fourth moisture content, microorganism and client are specified is tested;
The qualified pumpkin fourth of selective examination warehouse-in is deposited: storage temperature≤12 DEG C, relative humidity≤70%, warehouse for finished product need clean, is dried, health, directly do not expose to sunlight, the line identifier of going forward side by side.
Further improving of technique scheme is: in described (2) step, described hyperacoustic frequency and the sound intensity are respectively 50KHz～70KHz and 8～10W/cm
2.
Further improving of technique scheme is: in described (8) step, the pressure of described steam blasting is 1.0～1.6MPa, and the dimension pressure time is 4～5 minutes.
Further improving of technique scheme is: in described (1) step, in the time that pumpkin is collected in non-register orchard, regularly pumpkin is carried out to the residual sampling observation of agriculture, and according to pumpkin acceptance criteria, its specification and quality are verified, reject underproof pumpkin raw material.
Further improving of technique scheme is: in described (2) step, described sodium chloride solution is that mass percent is that the diameter of gravel is 1.5～3.0mm described in 1.0～1.5% sodium chloride solution, and described ultrasonic generator is piezoelectric-type ultrasonic wave generating device.
The invention has the beneficial effects as follows:
(1) this dehydration pumpkin processing method adopts Ultrasonic Cleaning peeling, and peeling efficiency is high, wastage of material is few.
(2) pumpkin fourth is adopted steam blasting by this dehydration pumpkin processing method, in the process of steam blasting, transfer heat energy to mechanical energy, lignin is separated with cellulose and amylopectin dissolving, also supervene the physical process of the cooling of expanding simultaneously, be down to room temperature for 200～250 DEG C from explosion, can directly match with low temperature drying operation, processing does not need to lower the temperature, save a large amount of time and the energy, realized the continuity of dehydration pumpkin processing.
Detailed description of the invention
Embodiment mono-
The dehydration pumpkin processing method of the present embodiment, its concrete steps are:
(1) selection pumpkin raw material: select fresh pumpkin, reject the defective products in pumpkin;
(2) Ultrasonic Cleaning peeling: will be placed in the sodium chloride solution that contains diameter 1.0～5mm gravel through the pumpkin of selection, utilize ultrasonic generator to apply ultrasonic wave to described sodium chloride solution, hyperacoustic frequency and the sound intensity are respectively 5KHz～1MHz and 0.2～10W/cm
2;
(3) blanching is cooling: the pumpkin of removing the peel through cleaning with the hot water blanching of 95～100 DEG C of temperature 3～5 minutes, then pull nature out cooling;
(4) machine is cut: use cutting machine that the pumpkin of blanching is cut into pumpkin fourth;
(5) dry: the pumpkin fourth after machine is cut is put into baking oven dries, 75 ± 5 DEG C for the treatment of temperatures, processing time 2-4 hour;
(6) cooling: the pumpkin fourth after drying to be used to air blast quenching, in 15 minutes, make temperature be down to below 40 DEG C;
(7) machine choosing: according to the granularity requirements of product, the pumpkin fourth after the screen cloth of selection dimension is cut machine is screened, and then carries out magnetic separation, removes light impurity, metal object, powder and rectangular;
(8) steam blasting: pumpkin fourth is sent into steam blasting device and carry out steam blasting, the pressure of steam blasting is 1.0～2MPa, temperature while controlling the steam blasting of steam blasting device is 200～250 DEG C, and dimension presses 1～5 minute, and the pumpkin fourth after steam blasting is down to room temperature;
(9) dry: collect the pumpkin fourth after steam blasting, pumpkin fourth is placed in vacuum freeze dryer, controlling temperature is-80 DEG C, and vacuum is 133 × 10
-3mBar, drying time 2～4h, moisture≤7.0% in raw material;
(10) go-on-go packaging: collect dried pumpkin fourth and pack.The present embodiment is the requirement according to client, uses electronic platform scale packaging, quantitative, the outer carton of interior double-layer plastic bag.
The dehydration pumpkin processing method of the present embodiment can also be spot-check after (10) step has been packed, and the pumpkin fourth after packaging is carried out to the requirement inspection that material moisture content, microorganism and client specify; The qualified packaging pumpkin fourth of selective examination warehouse-in is deposited, material storage temperature≤12 DEG C, relative humidity≤70%, warehouse for finished product need clean, is dried, health, directly do not expose to sunlight, the line identifier of going forward side by side.
In addition, the dehydration pumpkin processing method of the present embodiment, in described (1) step, in the time that pumpkin is collected in non-register orchard, needs regularly pumpkin to be carried out to the residual sampling observation of agriculture, and according to pumpkin acceptance criteria, its specification and quality are verified, reject underproof pumpkin raw material.Non-register orchard in the present embodiment is not declare the pumpkin planting base of putting on record to each inspection and quarantine mechanism inside the province in accordance with the law.
Embodiment bis-
The dehydration pumpkin processing method of the present embodiment is the improvement on embodiment mono-basis, its difference is: in described (2) step, described sodium chloride solution is that mass percent is that the diameter of gravel is 1.5～3.0mm described in 1.0～1.5% sodium chloride solution, and described ultrasonic generator is piezoelectric-type ultrasonic wave generating device.
Embodiment tri-
The dehydration pumpkin processing method of the present embodiment is that the another kind on embodiment mono-basis improves, and its difference is: in described (2) step, described hyperacoustic frequency and the sound intensity are respectively 50KHz～70KHz and 8～10W/cm
2.
Embodiment tetra-
The dehydration pumpkin processing method of the present embodiment is another improvement on embodiment mono-basis, and its difference is: in described (8) step, the pressure of described steam blasting is 1.0～1.6MPa, and the dimension pressure time is 4～5 minutes.The steam blasting device of the present embodiment is numerical-control full-automatic Steam explosive machine.
Dehydration pumpkin processing method of the present invention is not limited to the concrete technical scheme described in above-described embodiment, and the technical scheme that all employings are equal to replacement formation is the protection domain that the present invention requires.
Claims (6)
1. a dehydration pumpkin processing method, comprises the following steps:
(1) selection pumpkin raw material: select fresh pumpkin, reject the defective products in pumpkin;
(2) Ultrasonic Cleaning peeling: will be placed in the sodium chloride solution that contains diameter 1.0～5mm gravel through the pumpkin of selection, utilize ultrasonic generator to apply ultrasonic wave to described sodium chloride solution, hyperacoustic frequency and the sound intensity are respectively 5KHz～1MHz and 0.2～10W/cm
2;
(3) blanching is cooling: the pumpkin of removing the peel through cleaning with the hot water blanching of 95～100 DEG C of temperature 3～5 minutes, then pull nature out cooling;
(4) machine is cut: use cutting machine that the pumpkin of blanching is cut into pumpkin fourth;
(5) dry: the pumpkin fourth after machine is cut is put into baking oven dries, 75 ± 5 DEG C for the treatment of temperatures, 2～4 hours processing times;
(6) cooling: the pumpkin fourth after drying to be used to air blast quenching, in 15 minutes, make temperature be down to below 40 DEG C;
(7) machine choosing: according to the granularity requirements of product, the pumpkin fourth after the screen cloth of selection dimension is cut machine is screened, and then carries out magnetic separation, removes light impurity, metal object, powder and rectangular;
(8) steam blasting: pumpkin fourth is sent into steam blasting device and carry out steam blasting, the pressure of steam blasting is 1.0～2MPa, temperature while controlling the steam blasting of steam blasting device is 200～250 DEG C, and dimension presses 1～5 minute, and the pumpkin fourth after steam blasting is down to room temperature;
(9) dry: collect the pumpkin fourth after steam blasting, pumpkin fourth is placed in vacuum freeze dryer, controlling temperature is-80 DEG C, and vacuum is 133 × 10
-3mBar, drying time 2～4h, moisture≤7.0% in raw material;
(10) go-on-go packaging: collect dried pumpkin fourth and pack.
2. dehydration pumpkin processing method according to claim 1, is characterized in that: after described (10) step completes, be also provided with
Artificial selective examination: moisture content and microorganism to pumpkin fourth are tested;
The qualified pumpkin fourth of selective examination warehouse-in is deposited: storage temperature≤12 DEG C, relative humidity≤70%, warehouse for finished product need clean, is dried, health, directly do not expose to sunlight, the line identifier of going forward side by side.
3. dehydration pumpkin processing method according to claim 1 and 2, is characterized in that: in described (2) step, described hyperacoustic frequency and the sound intensity are respectively 50KHz～70KHz and 8～10W/cm
2.
4. dehydration pumpkin processing method according to claim 1 and 2, is characterized in that: in described (8) step, the pressure of described steam blasting is 1.0～1.6MPa, and the dimension pressure time is 4～5 minutes.
5. dehydration pumpkin processing method according to claim 1 and 2, it is characterized in that: in described (2) step, described sodium chloride solution is that mass percent is that the diameter of gravel is 1.5～3.0mm described in 1.0～1.5% sodium chloride solution, and described ultrasonic generator is piezoelectric-type ultrasonic wave generating device.
6. dehydration pumpkin processing method according to claim 1 and 2, it is characterized in that: in described (1) step, in the time that pumpkin is collected in non-register orchard, regularly pumpkin is carried out to the residual sampling observation of agriculture, and according to pumpkin acceptance criteria, its specification and quality are verified, reject underproof pumpkin raw material.
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|---|---|---|---|
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| CN104738430A (en) * | 2015-03-06 | 2015-07-01 | 江苏振亚食品有限公司 | Barley seedling clear juice powder processing method |
| CN104872573A (en) * | 2015-05-29 | 2015-09-02 | 兴化市绿禾食品有限公司 | Carrot powder processing method |
| CN107232291A (en) * | 2017-05-17 | 2017-10-10 | 安徽禾泉农庄生态农业有限公司 | A kind of fresh-keeping treating method of bamboo shoots |
| CN107258891A (en) * | 2017-05-17 | 2017-10-20 | 安徽禾泉农庄生态农业有限公司 | A kind of fresh-keeping process technique of pleurotus eryngii |
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| CN102308869B (en) * | 2011-08-12 | 2012-11-14 | 江南大学 | Production method of evaporated vegetables |
| CN102742797A (en) * | 2012-07-05 | 2012-10-24 | 福建农林大学 | Processing method for instant crisp pumpkin chip |
| CN103222531B (en) * | 2013-04-19 | 2015-06-17 | 李友志 | Preserved pumpkin and preparation method thereof |
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