CN112273574A - Method for preparing selenium-rich nutritional rice paste food suitable for children and the elderly - Google Patents
Method for preparing selenium-rich nutritional rice paste food suitable for children and the elderly Download PDFInfo
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L7/00—Cereal-derived products; Malt products; Preparation or treatment thereof
- A23L7/10—Cereal-derived products
- A23L7/115—Cereal fibre products, e.g. bran, husk
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L33/00—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
- A23L33/10—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof using additives
- A23L33/16—Inorganic salts, minerals or trace elements
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L7/00—Cereal-derived products; Malt products; Preparation or treatment thereof
- A23L7/10—Cereal-derived products
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L7/00—Cereal-derived products; Malt products; Preparation or treatment thereof
- A23L7/10—Cereal-derived products
- A23L7/104—Fermentation of farinaceous cereal or cereal material; Addition of enzymes or microorganisms
- A23L7/107—Addition or treatment with enzymes not combined with fermentation with microorganisms
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23P—SHAPING OR WORKING OF FOODSTUFFS, NOT FULLY COVERED BY A SINGLE OTHER SUBCLASS
- A23P30/00—Shaping or working of foodstuffs characterised by the process or apparatus
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
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- Life Sciences & Earth Sciences (AREA)
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- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
- Biotechnology (AREA)
- Microbiology (AREA)
- Inorganic Chemistry (AREA)
- Mycology (AREA)
- Cereal-Derived Products (AREA)
Abstract
The application relates to the field of food processing, and particularly discloses a method for preparing selenium-rich nutritional rice paste food suitable for children and old people, wherein the preparation process comprises the steps of preparing enzymolysis rice bran powder, and the steps are as follows: (a) pulverizing rice bran, sieving to obtain rice bran powder, adding the rice bran powder into an emulsifying barrel, adding water into the emulsifying barrel, and stirring to obtain emulsion; extracting emulsion, adding complex enzyme, mixing, reacting at 40-50 deg.C and pH of 4.0-5.5 for 0.5-1 hr, and inactivating enzyme to obtain suspension; (b) and (b) centrifuging, drying, crushing and sieving the suspension obtained in the step (a) to obtain the enzymatic rice bran powder. In the step (a), the emulsion is prepared by the emulsion preparation device, and the complex enzyme can be mixed into the emulsion during the process of extracting the emulsion, so that the preparation and extraction efficiency of the emulsion can be improved.
Description
Technical Field
The invention relates to the field of food processing, in particular to a method for preparing selenium-rich nutritional rice paste food suitable for children and old people.
Background
Insufficient selenium intake in human body can cause hypothyroidism and weak immune system function, and some endemic diseases, such as keshan disease, Kaschin-Beck disease, endemic anemia and the like are caused. The selenium deficiency can directly lead to the reduction of the immunity of human bodies, and more than forty diseases threatening the health and the life of human bodies are proved to be related to the selenium deficiency of human bodies by clinical medicine, such as cancers, cardiovascular diseases, liver diseases, cataract, pancreatic diseases, diabetes, reproductive system diseases and the like. Therefore, selenium supplementation has become a trend for our health pursuit.
The selenium supplement has two modes, namely, the oral sodium selenite tablets, the sodium selenite fortified salt and the like are prepared by taking inorganic salt sodium selenite as an enhancer to supplement the deficiency of selenium in the diet; and secondly, organic selenium is adopted to supplement the deficiency of selenium in the diet. The organic selenium is selenium-containing macromolecular polymer formed by combining inorganic selenium with biomacromolecule protein, saccharides, lipids and other substances. Research shows that the utilization rate of inorganic selenium in human body is only 25%, and the bioavailability of organic selenium can reach 60% -80%. Meanwhile, inorganic selenium (such as sodium selenite and selenate) has short retention time in vivo, is discharged out of the body through excretion path quickly after entering the human body, causes selenium loss of the body, and cannot achieve the due effect. The organic selenium stays in the organism for a long time, can be stored under the condition of good selenium nutrition condition of a human body, and can be supplemented to physiological metabolism when the selenium nutrition of the human body is not enough, so that the selenium requirement of the organism is met.
The rice is used as a main grain crop in China, has wide sources and low cost and has reproducibility. The refined rice contains 70-80% of starch and 8% of protein. The rice protein contains rich essential amino acids, is easy to digest and absorb by human bodies, is low in antigenicity, does not produce anaphylactic reaction, is suitable for common people, and is particularly beneficial to producing foods for infants, old people, athletes and people with easily-allergic constitution. The modified rice starch is commonly used for preparing slowly digestible starch, and as a novel functional food, SDS has the special physiological functions of slowly digesting and absorbing, continuously releasing energy, maintaining postprandial blood sugar stability, and preventing and treating various chronic diseases related to diet, so the modified rice starch is increasingly a research hotspot in the fields of food science and modern nutrition. The rice bran of the brown rice is rich in vitamin, oleic acid, linoleic acid, phospholipid and selenium mineral element nutrient substances, and the method of modifying the rice bran and adding the modified rice bran can improve the selenium content in the rice paste and the overall nutritive value of the rice paste. The modified and strengthened selenium-rich pregelatinized nutritional rice paste develops and utilizes rich rice resources in China to a certain extent, improves the economic value of rice, increases the contents of selenium nutrient elements and SDS in food, and has important significance for improving the nutritional value of the rice paste and the food quality of the rice paste. At present, the rice paste rich in mineral elements is prepared by directly adding inorganic salt, so that the utilization rate of a human body is low and the absorption effect is poor.
The Chinese patent No. 201610397384.4, a method for producing starch selenium polysaccharide and selenium-rich pre-gelatinized nutritional rice paste by using pulse proxy growth, can obviously improve the selenium content in starch/rice paste, improve the per-capita intake of the public, increase the content of other mineral elements and reduce the gelatinization temperature of the rice paste. The disclosed method steps indicate that: after the selenium-rich pre-gelatinized nutritious rice flour is obtained, the selenium-rich pre-gelatinized nutritious rice flour and the enzymatic rice bran powder are uniformly mixed to obtain the selenium-rich pre-gelatinized nutritious brown rice flour. The preparation method of the enzymatic rice bran powder comprises the following specific steps: (1) pulverizing testa oryzae, sieving, mixing with water to obtain emulsion, adding complex enzyme, mixing, reacting at 40-50 deg.C and pH of 4.0-5.5 for 0.5-1 hr, and inactivating enzyme to obtain suspension; (2) and centrifuging, drying, crushing and sieving the obtained suspension to obtain the enzymatic rice bran powder.
In the disclosed method, rice bran and water are required to be prepared into emulsion at present, and the adopted method mainly comprises the steps of putting rice bran powder into a container, then flushing the water into the container, and stirring to form the emulsion; since part of the particulate matter in the rice bran settles in the emulsion during this process, the emulsion is formed and then poured out after waiting for a period of time for the particulate matter to settle again, resulting in a slower extraction efficiency of the emulsion.
Disclosure of Invention
The invention aims to provide a method for preparing selenium-rich nutritional rice paste food suitable for children and the old to solve the problem that emulsion is slow in preparation and extraction efficiency in the process of preparing enzymatic rice bran powder.
The preparation method of the selenium-rich nutritional rice paste food suitable for children and the old comprises the following steps of preparing enzymolysis rice bran powder:
(a) pulverizing rice bran, sieving to obtain rice bran powder, adding the rice bran powder into an emulsifying barrel, adding water into the emulsifying barrel, and stirring to obtain emulsion; extracting emulsion, adding complex enzyme, mixing, reacting at 40-50 deg.C and pH of 4.0-5.5 for 0.5-1 hr, and inactivating enzyme to obtain suspension;
(b) centrifuging, drying, crushing and sieving the suspension obtained in the step (a) to obtain enzymolysis rice bran powder;
the step (a) is to prepare emulsion by an emulsion preparation device,
the emulsion preparation device comprises an emulsification barrel, the bottom of the emulsification barrel is provided with a stirrer, the center of the emulsification barrel is provided with a material guide pipe along the vertical direction, and the lower end of the material guide pipe is connected with the stirrer through a spline;
a pressing plate which can only slide in a reciprocating manner in the vertical direction is arranged in the emulsifying barrel, a sealing ring for sealing a gap between the pressing plate and the inner wall of the emulsifying barrel is arranged on the periphery of the pressing plate, a spiral groove and a spiral rib which are mutually matched are arranged between the material guide pipe and the pressing plate, and the material guide pipe rotates in a reciprocating manner when the pressing plate slides up and down relative to the material guide pipe;
the length of the material guide pipe is smaller than the height of the emulsifying barrel, a wedge block is arranged on the side wall of the lower section of the material guide pipe, the wedge block is compressed when the pressing plate moves from top to bottom and passes through the wedge block, and the wedge block is popped out to block the pressing plate to move upwards relative to the material guide pipe after the pressing plate passes over the wedge block;
install the liquid-fetching tube on the outer wall of emulsification bucket, the upper end connecting hose of liquid-fetching tube, the tip downwardly extending of hose reaches the upper surface of clamp plate, and the hose constitutes the siphon with the liquid-fetching tube, and the bend section at siphon top is less than the last edge of emulsification bucket.
The friendship effect of this foundation scheme lies in:
(1) the rice bran powder is put into an emulsifying barrel, and the mixture of the rice bran and water can be stirred by using the power formed by flushing water in a manner of being matched with the flushing water; thereby being beneficial to emulsifying and dissolving the substances in the rice bran in water and shortening the subsequent stirring operation.
(2) Preparing emulsion by using an emulsion preparation device, and after rice bran is added into an emulsion barrel and water flushing is finished; utilize the power unit of outside setting to impress the clamp plate in the emulsification bucket, at this in-process, because be equipped with spiral recess and the spiral bead of mutually supporting between clamp plate and the passage, then at the in-process of clamp plate gliding downwards, the passage will take place to rotate to the passage will drive the agitator and rotate, then the agitator has the effect of stirring the rice bran of emulsification bucket bottom, emulsify, dissolve in aqueous with the part composition that promotes in the rice bran.
(3) In the process of pressing the pressing plate downwards, the emulsifying barrel is sealed by the pressing plate, and the space at the lower part of the emulsifying barrel is gradually extruded by the pressing plate, so that emulsion in the emulsifying barrel enters the material guide pipe and is discharged from the top of the material guide pipe, and is collected in the space of the emulsifying barrel above the pressing plate; in addition, the stirrer stirs the liquid below the pressing plate, so that the liquid is in a rotating state, the centrifugal force applied to the solid rice bran particles is large, and the solid rice bran particles move close to the side wall of the emulsifying barrel, so that the content of the solid rice bran particles around the rotation center of the stirrer is reduced, and the content of excessive emulsion doped in the extracted emulsion is avoided.
(4) Mixing rice bran powder with water to form an emulsion, wherein part of the materials in the rice bran are emulsified and distributed in the water to form the emulsion, and part of the solid materials in the rice bran are precipitated in the liquid; the rice bran powder and the water are mixed in a common container to form emulsion, so that the emulsion is poured out or drained after solid substances are settled during the extraction of the emulsion to ensure less impurities, and the settlement needs longer time, so that the preparation efficiency of the emulsion is lower; in the technical scheme, after the rice bran powder and the water are mixed and stirred, the emulsion with low impurity content can be extracted immediately by pressing the pressing plate, so that the preparation efficiency of the emulsion is improved.
The first preferred scheme is as follows: as further optimization to the basic scheme the passageway of the lower extreme of passage is equipped with the throat, and the cross section of throat is less than the cross-sectional area of the passageway at throat both ends, and throat department is equipped with the suction hole that runs through the passage lateral wall, and the last pot head of passage is equipped with the sleeve pipe, and the inner wall of sleeve pipe is equipped with the annular, is connected with the straw of one end intercommunication annular on the sleeve pipe, and the periphery at emulsification barrel top is equipped with enzyme liquid storage tank, and the other end of straw extends to in the enzyme liquid storage tank, is equipped with the check valve on the straw, and the entrance point of check valve communicates enzyme liquid storage tank, and the exit end of check valve communicates with the annular in the sleeve pipe, and the cracking.
In the basic scheme, complex enzyme is added when emulsion is extracted; in the first preferred embodiment, the pressing plate is pressed downwards, and simultaneously, emulsion in the emulsification barrel below the pressing plate enters the space of the emulsification barrel above the pressing plate through the material guide pipe, and in the process, fluid flowing upwards is formed in the material guide pipe. And the lower part of the material guide pipe is provided with the throat part, so that the lower part of the material guide pipe is in a Venturi tube shape, the flow velocity of fluid passing through the throat part is accelerated, the pressure intensity at the throat part is reduced, the enzyme liquid can be sucked from the enzyme liquid storage tank through the suction pipe by the suction hole arranged at the throat part, and the enzyme liquid is mixed with the emulsion in the process of discharging the emulsion from the material guide pipe, so that the addition of the compound enzyme is realized.
The preferred scheme II is as follows: as a further optimization of the first preferred scheme, the diameter of the lower end of the emulsifying barrel is larger than that of the upper end of the emulsifying barrel, and a stop block for limiting the pressure plate is fixed on the inner wall of the lower end of the emulsifying barrel. The lower end of the emulsification barrel is arranged to be larger than the upper end, so that when the emulsion at the lower end of the emulsification barrel rotates to be distributed to the periphery through centrifugal force, the lower part of the emulsification barrel has enough space to be beneficial to the emulsion in the middle of the emulsification barrel and the emulsion at the edge of the emulsification barrel to have obvious boundary.
The preferable scheme is three: as a further optimization of the second preferred embodiment, a weight is fixed to the end of the flexible tube. The end of the flexible tube can be positioned on the pressure plate under the action of the weight to completely drain the emulsion in the emulsification barrel above the pressure plate.
The preferable scheme is four: as a further optimization of the third preferred scheme, a retainer ring fixed with the emulsifying barrel is arranged above the emulsifying barrel, the pressing plate is positioned below the retainer ring, the inner diameter of the retainer ring is equal to the outer diameter of the material guide pipe, and a valve penetrating through the pressing plate is arranged on the pressing plate. When the wedge block is positioned below the pressing plate, the pressing plate is pressed downwards, the wedge block is compressed when the pressing plate passes through the wedge block, and the wedge block is popped up after the pressing plate passes through the wedge block, so that the pressing plate is pulled upwards, and the pressing plate pushes the material guide pipe upwards through the wedge block; the pressing plate is lifted upwards, after the pressing plate is contacted with the check ring, the wedge block is extruded in the check ring, and no supporting force for the material guide pipe is formed between the wedge block and the pressing plate, so that the material guide pipe falls under the action of gravity, and the material guide pipe is matched with the stirrer; therefore, the baffle ring is arranged to facilitate the separation of the guide tube and the pressure plate. In addition, through setting up the valve, after the valve is opened, the clamp plate slides from top to bottom in the emulsification bucket, forms the fluid in the passage, and it can only make the passage rotate to through vibrations clamp plate from top to bottom, can realize the effect of stirring the emulsion.
The preferable scheme is five: as a further optimization of the preferred embodiment, the operation steps of the emulsion preparation device are as follows:
(1) pressing the pressing plate downwards to enable the pressing plate to cross the wedge block at the lower end of the material guide pipe, and then lifting the pressing plate out of the emulsifying barrel;
(2) adding rice bran powder into an emulsification barrel, and flushing water into the emulsification barrel through a material guide pipe;
(3) the pressing plate is pulled upwards to enable the pressing plate to be in contact with the retainer ring, after the material guide pipe falls to be matched with the stirrer, the valve is opened, the pressing plate is moved downwards, and after the pressing plate is matched with the material guide pipe, the pressing plate is vibrated up and down repeatedly;
(4) and lifting the pressing plate to the top end of the emulsifying barrel, closing the valve, pressing the pressing plate downwards, lifting the pressing plate after the pressing plate is contacted with the stop dog, so that the liquid level of the emulsion in the emulsifying barrel crosses the bent section at the top of the siphon pipe, and extracting the emulsion through the liquid taking pipe.
In the preferred embodiment five, the step (1) is to prepare for adding the rice bran powder and flushing water into the emulsifying barrel, and the rice bran powder is added firstly and then added by flushing water, so that the emulsion is formed. In step (3), the rice bran may be further stirred by repeating the up and down shaking, thereby sufficiently emulsifying the related substances in the rice bran.
In the step (4), the pressing plate is pressed downwards, so that emulsion can be transferred from the lower part to the upper part of the emulsifying barrel, and solid impurities are kept at the bottom of the emulsifying barrel; after the pressure plate crosses the wedge block, the pressure plate is lifted upwards, the guide pipe can be moved upwards through the matching of the pressure plate and the wedge block, so that the liquid level of the emulsion extracted above the pressure plate can be lifted, and the emulsion can be transferred through the siphoning action after the liquid level crosses the bent section of the siphon pipe; meanwhile, the material guide pipes are also moved upwards synchronously, so that the backflow of the emulsion through the material guide pipes can be avoided.
Drawings
FIG. 1 is a schematic view of an apparatus for preparing an emulsion according to an embodiment of the present invention;
FIG. 2 is a view showing the state of the emulsion preparing apparatus when the retainer ring is in contact with the pressing plate;
fig. 3 is an enlarged view of a portion a in fig. 1.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises an emulsification barrel 10, a stirrer 11, a sleeve 12, a ring groove 121, an enzyme liquid storage tank 20, a suction pipe 21, a one-way valve 22, a guide pipe 30, a throat 31, a wedge 32, a spiral groove 33, a pressure plate 40, a valve 41, a retainer ring 50, a liquid taking pipe 61, a hose 62 and a weight 63.
In the process of preparing the selenium-rich nutritional rice paste by the pulsed electric field, the selenium-rich pre-gelatinized nutritional rice flour needs to be prepared firstly; and then uniformly mixing the selenium-rich pre-gelatinized nutritional rice flour and the enzymatic rice bran powder to obtain the nutritional value of the selenium-rich nutritional rice paste finally. Therefore, the process of preparing the selenium-rich nutritional rice paste specifically comprises the preparation of the selenium-rich pre-gelatinized nutritional rice flour and the preparation of the enzymolysis rice bran powder.
The preparation process of the enzymatic rice bran powder comprises the following steps:
(a) crushing and sieving rice bran to form rice bran powder, putting the rice bran powder into an emulsification barrel 10, adding water into the emulsification barrel 10, and stirring to prepare emulsion; extracting emulsion, adding complex enzyme, mixing, reacting at 45 deg.C and pH of 5.0 for 1 hr, and inactivating enzyme to obtain suspension;
(b) centrifuging, drying, crushing and sieving the suspension obtained in the step (a) to obtain enzymolysis rice bran powder;
the step (a) is to prepare emulsion by an emulsion preparation device,
as shown in fig. 1, the emulsion preparing apparatus includes an emulsifying barrel 10, a stirrer 11 is provided at the bottom of the emulsifying barrel 10, a material guiding pipe 30 is provided at the center of the emulsifying barrel 10 along the vertical direction, and the lower end of the material guiding pipe 30 is spline-connected to the stirrer 11, so that the material guiding pipe 30 can be separated from the stirrer 11; when the material guiding pipe 30 is connected to the stirrer 11, the stirrer 11 is driven to rotate by the rotation of the material guiding pipe 30. The emulsifying barrel 10 is arranged in a barrel shape, the inner wall of the emulsifying barrel 10 is provided with a guide edge parallel to a vertical plane, a pressing plate 40 which can seal the emulsifying barrel 10 and can slide in the emulsifying barrel 10 is arranged in the emulsifying barrel 10, and the outer edge of the pressing plate 40 is provided with a groove matched with the guide edge, so that the pressing plate 40 can only slide in the emulsifying barrel 10 along the vertical direction; the periphery of the pressing plate 40 is provided with a sealing ring for sealing a gap between the pressing plate 40 and the inner wall of the emulsification barrel 10, so that the sealing performance of the pressing plate 40 on the emulsification barrel 10 after the pressing plate 40 enters the emulsification barrel 10 is enhanced. The guide tube 30 and the pressing plate 40 are provided with a spiral groove 33 and a spiral rib which are matched with each other, which adopts the principle similar to a rotating mop, that is, when the pressing plate 40 moves in the vertical direction in the emulsification barrel 10, the pressing plate 40 also moves relative to the guide tube 30, and since the pressing plate 40 cannot rotate at this time, the pressing plate 40 drives the guide tube 30 to rotate, so that the guide tube 30 drives the stirrer 11 to rotate.
The length of the material guide tube 30 is less than the height of the emulsification barrel 10, so that the top of the material guide tube 30 does not exceed the mouth of the emulsification barrel 10 after the material guide tube 30 is connected with the stirrer 11. As shown in fig. 3, a wedge 32 is installed on a side wall of a lower section of the guide tube 30, a mounting groove is formed in the side wall of the lower section of the guide tube 30, the wedge 32 is arranged in the mounting groove, an upper end of the wedge 32 is hinged to a side wall of the mounting groove, a pressure spring is arranged between a lower end of the wedge 32 and the bottom of the mounting groove, a lower end of the wedge 32 protrudes out of the mounting groove under the pressure action of the pressure spring, and a limiting part for limiting the rotation angle of the wedge 32 is arranged at an upper end of the mounting groove. When the pressing plate 40 moves from top to bottom to pass through the wedge 32, the wedge 32 is pressed into the mounting groove by the pressing plate 40, so that after the pressing plate 40 passes through the wedge 32, the wedge 32 is ejected again to block the pressing plate 40 from moving upwards relative to the material guide pipe 30, namely, at the moment, if the pressing plate 40 moves upwards, the pressing plate 40 simultaneously drives the material guide pipe 30 to move upwards.
A liquid taking pipe 61 is fixedly installed on the outer wall of the emulsification barrel 10, the liquid taking pipe 61 extends downwards along the vertical direction, the upper end of the liquid taking pipe 61 is connected with a hose 62, the end part of the hose 62 extends downwards to the upper surface of the pressing plate 40, so that the hose 62 and the liquid taking pipe 61 form a siphon 21, and the bent section of the top of the siphon 21 is lower than the upper edge of the emulsification barrel 10. In order to prevent the end of the flexible tube 62 from being separated from the pressure plate 40, a weight 63 is fixed to the end of the flexible tube 62, and the end of the flexible tube 62 is hung on the pressure plate 40 by the weight 63. In addition, in order to prevent the hose 62 from being excessively squeezed when the pressing plate 40 is removed from the emulsification barrel 10, a protrusion is provided at the mouth of the emulsification barrel 10 corresponding to the liquid taking tube 61 to accommodate the connection between the hose 62 and the liquid taking tube 61.
The passage of the lower end of the guide tube 30 is provided with a throat 31, and the cross section of the throat 31 is smaller than the cross section of the passages at both ends of the throat 31, so that the lower end of the guide tube 30 is of a venturi structure. A suction hole penetrating through the side wall of the material guiding pipe 30 is formed in the throat part 31, the sleeve 12 is sleeved at the upper end of the material guiding pipe 30, and the annular groove 121 is formed in the inner wall of the sleeve 12, so that the throat part 31 at the lower end of the material guiding pipe 30 and the sleeve 12 form a connecting structure similar to a rotary joint; and the sleeve 12 is connected with a suction pipe 21 with one end communicated with the annular groove 121, the periphery of the top of the emulsifying barrel 10 is provided with an enzyme liquid storage tank 20, the other end of the suction pipe 21 extends into the enzyme liquid storage tank 20, the suction pipe 21 is provided with a one-way valve 22, the inlet end of the one-way valve 22 is communicated with the enzyme liquid storage tank 20, the outlet end of the one-way valve 22 is communicated with the annular groove 121 in the sleeve 12, and the opening pressure of the one-way valve 22 is set to be 1.1 atmospheric pressure. When the fluid in the material guide pipe 30 passes through rapidly, the flow speed at the throat 31 is fastest, so that the pressure in the throat 31 is lower, after the pressure formed by the throat 31 is superposed with the atmospheric pressure of the throat 31, the one-way valve 22 is opened, so that the throat 31 sucks the complex enzyme in the enzyme liquid storage tank 20 into the throat 31 through the suction pipe 21, the enzyme liquid enters the fluid, and the enzyme is mixed into the fluid.
The diameter of the lower end of the emulsification barrel 10 is larger than that of the upper end of the emulsification barrel 10, so that when the stirrer 11 rotates, a stirring effect is formed on the liquid in the emulsification barrel 10, so that the liquid in the emulsification barrel 10 rotates along the center of the emulsification barrel 10, and the solid impurities in the liquid are diffused to the outer periphery, and the larger the diameter of the lower part of the emulsification barrel 10, the farther the distance between the solid impurities and the center. The inner wall of the lower end of the emulsification barrel 10 is fixed with a stop block, and after the pressing plate 40 moves downwards to abut against the stop block, the pressing plate 40 cannot move downwards continuously, namely, the stop block plays a role in limiting the pressing plate 40.
The upper part of the emulsification barrel 10 is provided with a retainer ring 50, the retainer ring 50 forms a fixed connection relation with the emulsification barrel 10 through a connecting rod and the like, the pressing plate 40 is positioned below the retainer ring 50, the inner diameter of the retainer ring 50 is equal to the outer diameter of the material guide pipe 30, and the pressing plate 40 is provided with a valve 41 penetrating through the pressing plate 40. When the wedge 32 is located below the pressing plate 40, by pressing the pressing plate 40 downwards, when the pressing plate 40 passes through the wedge 32, the wedge 32 will be compressed, and after the pressing plate 40 passes through the wedge 32, the wedge 32 will be ejected again, at this time, by pulling the pressing plate 40 upwards, the pressing plate 40 will push the material guiding pipe 30 upwards through the wedge 32; as shown in fig. 2, the pressing plate 40 is pulled upward, and after the pressing plate 40 contacts the retainer 50, the wedge 32 is pressed into the retainer 50, and no supporting force for the guide tube 30 is formed between the wedge 32 and the pressing plate 40, so that the guide tube 30 falls down under the action of gravity, and the guide tube 30 is engaged with the stirrer 11 again; separation of the guide tube 30 and the pressure plate 40 is facilitated by the provision of the retainer ring 50. In addition, by providing the valve 41, after the valve 41 is opened, the pressing plate 40 slides up and down in the emulsification barrel 10, and a fluid is formed in the guide tube 30, which only rotates the guide tube 30, so that the emulsion can be stirred by vibrating the pressing plate 40 up and down.
The operation steps of the emulsion preparation device are as follows:
(1) pressing the pressing plate 40 downward such that the pressing plate 40 goes over the wedge 32 at the lower end of the guide duct 30, and then lifting the pressing plate 40 out of the emulsification barrel 10;
(2) rice bran powder is put into the emulsification barrel 10, and water is filled into the emulsification barrel 10 through the material guide pipe 30;
(3) the pressing plate 40 is pulled upwards to enable the pressing plate 40 to be in contact with the retainer ring 50, after the material guide pipe 30 falls and is matched with the stirrer 11, the valve 41 is opened, the pressing plate 40 is moved downwards, and after the pressing plate 40 is matched with the material guide pipe 30, the pressing plate 40 is vibrated up and down repeatedly;
(4) lifting the pressure plate 40 to the top end of the emulsification barrel 10, closing the valve 41, pressing the pressure plate 40 downwards, lifting the pressure plate 40 after the pressure plate 40 contacts with the stop, making the liquid level of the emulsion in the emulsification barrel 10 cross the bent section at the top of the siphon 21, and extracting the emulsion through the liquid-taking pipe 61.
In the process of preparing the emulsion by using the emulsion preparing apparatus of the embodiment, after the pressing plate 40 enters the emulsifying barrel 10, when the valve 41 on the pressing plate 40 is in the closed state, the pressing plate 40 and the emulsifying barrel 10 are in the closed state; after the pressing plate 40 is contacted with the stop block, the pressing plate 40 is pulled upwards to lift the liquid level of the emulsion above the pressing plate 40, at this time, as the popped wedge 32 is abutted against the upper surface of the pressing plate 40, the pressing plate 40 simultaneously pushes the material guide pipe 30 to move upwards, and as the top of the material guide pipe 30 is lower than the opening of the emulsifying barrel 10, the pressing plate 40 and the material guide pipe 30 move upwards simultaneously, so that the liquid level of the emulsion can be prevented from overflowing the top end of the material guide pipe 30, and the emulsion can be prevented from flowing back; in addition, the material guiding pipe 30 also has the function of communicating the lower part of the emulsification barrel 10 with the outside, so that the formation of negative pressure at the bottom of the emulsification barrel 10 can be avoided, and the complex enzyme can directly enter the lower part of the emulsification barrel 10.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (6)
1. A method for preparing selenium-rich nutritional rice paste food suitable for children and the old, which is characterized by comprising the following steps of preparing enzymolysis rice bran powder:
(a) pulverizing rice bran, sieving to obtain rice bran powder, adding the rice bran powder into an emulsifying barrel, adding water into the emulsifying barrel, and stirring to obtain emulsion; extracting emulsion, adding complex enzyme, mixing, reacting at 40-50 deg.C and pH of 4.0-5.5 for 0.5-1 hr, and inactivating enzyme to obtain suspension;
(b) centrifuging, drying, crushing and sieving the suspension obtained in the step (a) to obtain enzymolysis rice bran powder;
the step (a) is to prepare emulsion by an emulsion preparation device,
the emulsion preparation device comprises an emulsification barrel, the bottom of the emulsification barrel is provided with a stirrer, the center of the emulsification barrel is provided with a material guide pipe along the vertical direction, and the lower end of the material guide pipe is connected with the stirrer through a spline;
a pressing plate which can only slide in a reciprocating manner in the vertical direction is arranged in the emulsifying barrel, a sealing ring for sealing a gap between the pressing plate and the inner wall of the emulsifying barrel is arranged on the periphery of the pressing plate, a spiral groove and a spiral rib which are mutually matched are arranged between the material guide pipe and the pressing plate, and the material guide pipe rotates in a reciprocating manner when the pressing plate slides up and down relative to the material guide pipe;
the length of the material guide pipe is smaller than the height of the emulsifying barrel, a wedge block is arranged on the side wall of the lower section of the material guide pipe, the wedge block is compressed when the pressing plate moves from top to bottom and passes through the wedge block, and the wedge block is popped out to block the pressing plate to move upwards relative to the material guide pipe after the pressing plate passes over the wedge block;
install the liquid-fetching tube on the outer wall of emulsification bucket, the upper end connecting hose of liquid-fetching tube, the tip downwardly extending of hose reaches the upper surface of clamp plate, and the hose constitutes the siphon with the liquid-fetching tube, and the bend section at siphon top is less than the last edge of emulsification bucket.
2. The method for preparing the selenium-enriched nutritional rice paste food suitable for children and the elderly according to claim 1, wherein the method comprises the following steps: the utility model discloses an emulsion tank, including emulsion tank, feed guide, the passageway of the lower extreme of feed guide is equipped with the throat, the cross section of throat is less than the cross-sectional area of the passageway at throat both ends, throat department is equipped with the suction hole that runs through the feed guide lateral wall, the last pot head of feed guide is equipped with the sleeve pipe, the sheathed tube inner wall is equipped with the annular, be connected with the straw of one end intercommunication annular on the sleeve pipe, the periphery at emulsion tank top is equipped with enzyme liquid storage tank, the other end of straw extends to in the enzyme liquid storage tank, be equipped with the check valve on the straw, the entrance point intercommunication enzyme liquid storage tank of check valve, the exit end and the.
3. The method for preparing the selenium-enriched nutritional rice paste food suitable for children and the elderly according to claim 2, wherein the method comprises the following steps: the diameter of the lower end of the emulsifying barrel is larger than that of the upper end of the emulsifying barrel, and a stop dog for limiting the pressing plate is fixed on the inner wall of the lower end of the emulsifying barrel.
4. The method for preparing the selenium-enriched nutritional rice paste food suitable for children and the elderly according to claim 3, wherein the method comprises the following steps: and a weight is fixed at the end part of the hose.
5. The method for preparing the selenium-enriched nutritional rice paste food suitable for children and the elderly according to claim 4, wherein the method comprises the following steps: the top of emulsification bucket is equipped with the retaining ring fixed with emulsification bucket, and the clamp plate is located the below of retaining ring, and the internal diameter of retaining ring equals the external diameter of passage, be equipped with the valve that link up the clamp plate on the clamp plate.
6. The method for preparing the selenium-enriched nutritional rice paste food suitable for children and the elderly according to claim 5, wherein the method comprises the following steps: the operation steps of the emulsion preparation device are as follows:
(1) pressing the pressing plate downwards to enable the pressing plate to cross the wedge block at the lower end of the material guide pipe, and then lifting the pressing plate out of the emulsifying barrel;
(2) adding rice bran powder into an emulsification barrel, and flushing water into the emulsification barrel through a material guide pipe;
(3) the pressing plate is pulled upwards to enable the pressing plate to be in contact with the retainer ring, after the material guide pipe falls to be matched with the stirrer, the valve is opened, the pressing plate is moved downwards, and after the pressing plate is matched with the material guide pipe, the pressing plate is vibrated up and down repeatedly;
(4) and lifting the pressing plate to the top end of the emulsifying barrel, closing the valve, pressing the pressing plate downwards, lifting the pressing plate after the pressing plate is contacted with the stop dog, so that the liquid level of the emulsion in the emulsifying barrel crosses the bent section at the top of the siphon pipe, and extracting the emulsion through the liquid taking pipe.
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Cited By (1)
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