CN110651931A - Debitterizing device and debitterizing method of orange juicer - Google Patents
Debitterizing device and debitterizing method of orange juicer Download PDFInfo
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- 235000020971 citrus fruits Nutrition 0.000 claims abstract description 77
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- 238000001179 sorption measurement Methods 0.000 claims abstract description 67
- 239000007788 liquid Substances 0.000 claims abstract description 45
- VHLJDTBGULNCGF-UHFFFAOYSA-N Limonin Natural products CC1(C)OC2CC(=O)OCC23C4CCC5(C)C(CC(=O)C6OC56C4(C)C(=O)CC13)c7cocc7 VHLJDTBGULNCGF-UHFFFAOYSA-N 0.000 claims abstract description 30
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- 238000001514 detection method Methods 0.000 claims abstract description 22
- 239000003463 adsorbent Substances 0.000 claims description 13
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- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 9
- 230000008929 regeneration Effects 0.000 claims description 9
- 238000011069 regeneration method Methods 0.000 claims description 9
- 238000010828 elution Methods 0.000 claims description 8
- 238000004128 high performance liquid chromatography Methods 0.000 claims description 7
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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
- A23L2/00—Non-alcoholic beverages; Dry compositions or concentrates therefor; Their preparation
- A23L2/02—Non-alcoholic beverages; Dry compositions or concentrates therefor; Their preparation containing fruit or vegetable juices
- A23L2/04—Extraction of juices
- A23L2/06—Extraction of juices from citrus fruits
-
- 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
- A23L2/00—Non-alcoholic beverages; Dry compositions or concentrates therefor; Their preparation
- A23L2/70—Clarifying or fining of non-alcoholic beverages; Removing unwanted matter
- A23L2/80—Clarifying or fining of non-alcoholic beverages; Removing unwanted matter by adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/08—Selective adsorption, e.g. chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/08—Selective adsorption, e.g. chromatography
- B01D15/10—Selective adsorption, e.g. chromatography characterised by constructional or operational features
- B01D15/20—Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to the conditioning of the sorbent material
- B01D15/206—Packing or coating
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/88—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86
-
- 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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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Nutrition Science (AREA)
- Physics & Mathematics (AREA)
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- General Health & Medical Sciences (AREA)
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- Non-Alcoholic Beverages (AREA)
Abstract
The invention discloses a debitterizing device and a debitterizing method of a citrus juicer, wherein the debitterizing device comprises: the citrus juice extracting device comprises a primary squeezing tank, a lifting pump, an adsorption resin tank, a liquid storage tank, a proportional valve, a PDA detection device and a citrus juice tank, wherein the lifting pump is connected with the primary squeezing tank and the adsorption resin tank, adsorption resin for adsorbing limonin is arranged in the adsorption resin tank, the adsorption resin tank is connected with the citrus juice tank through the liquid storage tank, one end of the proportional valve is connected with the liquid storage tank, the other end of the proportional valve is connected between the lifting pump and the adsorption resin tank, and the liquid storage tank is further connected with the PDA detection device. The debitterizing device of the citrus juicer monitors the content of the citraline in the debitterizing process of the citrus juice, so that the flavor of the debitterized citrus juice is kept unchanged.
Description
Technical Field
The invention relates to the technical field of orange juicers, in particular to a debitterizing device and a debitterizing method of an orange juicer.
Background
Citrus fruits including lemon, navel orange, sweet orange, grapefruit, mandarin orange, tangerine, kumquat, etc., are one of the most prominent subtropical fruits in the world. The development and utilization of citrus products has been directed to juicing, canning, brewing, sugar curing, and extraction of essential oils and pectins. However, the development of the citrus processing industry is severely limited by the problems of bitterness, citrus juice turbidity, heat-induced off-taste, etc. of many citrus products, resulting in a certain economic loss. Bitter substances in the citrus are mainly distributed in the rind, the sponge layer, the tendons and the seeds. The formation of bitter taste in citrus juice is mainly caused by two major classes of compounds. One class of compounds is the flavonoid compounds, the main bitter of which is naringin; another class of compounds is limonoids, which are a group of triterpenoid derivatives that include twenty-nine members of the group, four of which have a strong bitter taste, namely, citraline, forchanol, nomilin, and nomilin acid, of which citraline is the most important source of bitter taste. Citrus juice can be bitter during standing and processing (such as juicing, filtering, sterilizing and the like), if the citrus juice is eaten fresh and ripe fruits or is drunk in time after juice extraction, the bitter taste is not generated, and the phenomenon of strong bitter taste after processing is commonly known as 'after-bitterness' or 'delayed bitter taste'.
The content of citraline in the citrus juice is closely related to the flavor. The citrus juice has a special flavor which is incomparable with pear juice and apple juice due to the fact that the citrus juice contains a certain amount of the citraline, and the existence of the citraline has the effect of maintaining the flavor of the citrus juice which cannot be underestimated. If the citraline is completely removed, the flavor characteristic of citrus juice is lost and is unacceptable to consumers. Therefore, the citrus products should maintain proper citraline content, and the debittering device of the existing citrus juice extractor has single function, so that the citraline content after debittering cannot be controlled, and the flavor of the debittered citrus juice is obviously poor.
Disclosure of Invention
The invention aims to provide a debittering device and a debittering method of a citrus juicer, which are used for monitoring the content of citraline in the debittering process of citrus juice so as to keep the flavor of the debittered citrus juice unchanged.
In order to achieve the above object, the present invention provides a debittering device of a citrus juicer, comprising: the citrus juice extracting device comprises a primary squeezing tank, a lifting pump, an adsorption resin tank, a liquid storage tank, a proportional valve, a PDA detection device and a citrus juice tank, wherein the lifting pump is connected with the primary squeezing tank and the adsorption resin tank, adsorption resin for adsorbing limonin is arranged in the adsorption resin tank, the adsorption resin tank is connected with the citrus juice tank through the liquid storage tank, one end of the proportional valve is connected with the liquid storage tank, the other end of the proportional valve is connected between the lifting pump and the adsorption resin tank, and the liquid storage tank is further connected with the PDA detection device.
Optionally, a filter is further disposed between the preliminary pressing tank and the lift pump.
Optionally, the adsorption resin tank is connected with an elution liquid tank.
Optionally, the adsorption resin tank is connected with a regeneration liquid tank.
The invention also provides a debittering method of citrus juice, which comprises the following steps: separating the citrus peel and initially pressing the citrus pulp to obtain a juice; adsorbing limonin in the virgin juice by using adsorption resin; detecting the limonin content in the initial juice by adopting a high performance liquid chromatography and comparing the content with the finished juice, mixing a certain proportion of the initial juice in the liquid storage tank when the limonin content is lower than the finished juice, and absorbing and debitterizing the initial juice in the liquid storage tank by adsorption resin when the limonin content is higher than the finished juice.
Optionally, the adsorbent resin comprises HP-20 adsorbent resin.
Optionally, after the adsorption resin is saturated, eluting the adsorption resin with an organic solvent, wherein the organic solvent comprises ethanol or acetone.
Optionally, after the limonin adsorbed by the adsorption resin is eluted, the adsorption resin is regenerated and cleaned by alkali or acid to recover the adsorption capacity of the adsorption resin.
Optionally, the detecting the limonin content by high performance liquid chromatography comprises: extracting certain initial juice, and preparing a detection solution by taking dichloromethane as an extraction solvent; a PDA detection device and a carbon-eighteen modified silica gel chromatographic column are adopted, acetonitrile with the volume fraction of 45% is used as a mobile phase, the flow rate is 1mL/min, the column temperature is 25 ℃, and the detection is carried out at the wavelength of 210 nm.
The invention provides a debitterizing device and a debitterizing method of a citrus juicer, wherein the debitterizing device comprises: the citrus juice extracting device comprises a primary squeezing tank, a lifting pump, an adsorption resin tank, a liquid storage tank, a proportional valve, a PDA detection device and a citrus juice tank, wherein the lifting pump is connected with the primary squeezing tank and the adsorption resin tank, adsorption resin for adsorbing limonin is arranged in the adsorption resin tank, the adsorption resin tank is connected with the citrus juice tank through the liquid storage tank, one end of the proportional valve is connected with the liquid storage tank, the other end of the proportional valve is connected between the lifting pump and the adsorption resin tank, and the liquid storage tank is further connected with the PDA detection device. The debitterizing device of the citrus juicer monitors the content of the citraline in the debitterizing process of the citrus juice, so that the flavor of the debitterized citrus juice is kept unchanged.
Drawings
FIG. 1 is a schematic view of a debittering device of a citrus juicer according to an embodiment of the present invention;
fig. 2 is a process flow diagram of a debittering device of a citrus juicer according to an embodiment of the invention.
Wherein: 1-a preliminary pressing tank, 2-a filter, 3-a lift pump, 4-an adsorption resin tank, 5-an elution liquid tank, 6-a regeneration liquid tank, 7-a liquid storage tank, 8-a proportional valve, 9-a PDA detection device and 10-a citrus juice tank.
Detailed Description
The following describes in more detail embodiments of the present invention with reference to the schematic drawings. Advantages and features of the present invention will become apparent from the following description and claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
The invention provides a debittering device of a citrus juicer, and figure 1 is a schematic diagram of the debittering device of the citrus juicer, which is provided by an embodiment of the invention, and referring to figure 1, the debittering device of the citrus juicer comprises: the citrus juice extracting device comprises a primary squeezing tank 1, a lifting pump 3, an adsorption resin tank 4, a liquid storage tank 7, a proportional valve 8, a PDA detection device 9 and a citrus juice tank 10, wherein the lifting pump 3 is connected with the primary squeezing tank 1 and the adsorption resin tank 4, adsorption resin for adsorbing limonin is arranged in the adsorption resin tank 4, the adsorption resin tank 4 is connected with the citrus juice tank 10 through the liquid storage tank 7, one end of the proportional valve 8 is connected with the liquid storage tank 7, the other end of the proportional valve 8 is connected between the lifting pump 3 and the adsorption resin tank 4, and the liquid storage tank is further connected with the PDA detection device 9. A filter 2 is arranged between the preliminary pressing pool 1 and the lifting pump 3, so that pulp in the citrus juice is prevented from being silted up when the debitterizing device is operated, and the operation of the equipment is prevented from being influenced. The adsorption resin tank 4 is connected with an elution liquid tank 5 and a regeneration liquid tank 6, wherein the elution liquid tank 5 and the regeneration liquid tank 6 are used for storing elution and a regeneration agent respectively and are used for elution of limonin adsorbed by adsorption resin and regeneration of the adsorption capacity of the adsorption resin.
Fig. 2 is a process flow diagram of a debittering device of a citrus juicer provided by an embodiment of the invention, which is combined with fig. 1 and fig. 2, and the debittering method of citrus juice provided by the invention comprises the following steps: separating mandarin orange peel, primarily squeezing juice with pulp, adsorbing limonin in the primarily squeezed juice with adsorbent resin, detecting limonin content in the primarily squeezed juice with high performance liquid chromatography, comparing with the finished juice, mixing the primarily squeezed juice with a certain proportion in a liquid storage tank when the limonin content is lower than the finished juice, and adsorbing and debittering the primarily squeezed juice in the liquid storage tank with adsorbent resin when the limonin content is higher than the finished juice. One end of the proportional valve 8 is connected with the liquid storage tank 7, the other end of the proportional valve 8 is connected between the lifting pump 3 and the adsorption resin tank 4, and the proportion of the virgin juice mixed in the liquid storage tank can be adjusted. The content of the limonin in the finished product of the juice is 7.1-8.8 mg/Kg, and the flavor of the citrus juice conforms to the taste habit of people.
The adsorbent resin comprises HP-20 adsorbent resin. After the adsorption resin is adsorbed and saturated, eluting the adsorption resin by using an organic solvent, wherein the organic solvent comprises ethanol or acetone. And after the limonin adsorbed by the adsorption resin is eluted, regenerating and cleaning the adsorption resin by alkali or acid so as to recover the adsorption capacity of the adsorption resin. After several cycles of resin use, the adsorption capacity decreases and it can be treated once with an appropriate amount of 5% sodium hydroxide solution. When the resin is polluted and the adsorption capacity is greatly reduced, the regeneration needs to be enhanced. Adding 2% -3% hydrochloric acid solution which is 10cm higher than the resin layer into a container, soaking for 2-4 hours, then passing through a column by using hydrochloric acid solution which is 3 times of the volume of the resin layer, and washing by using clean water until the resin layer is nearly neutral; and then soaking and washing the column with 5% sodium hydroxide solution for 2-4 hours, introducing 3 times of the resin volume of sodium hydroxide solution with the same concentration into the column by the same method, finally washing the column with clean water until the pH value is neutral, washing the column with 2-3 times of the resin volume of ethanol, and then washing the column with pure water to remove the ethanol, thus obtaining the product for use. Part of new resin can be added to supplement regeneration loss or reuse new and old resin.
The high performance liquid chromatography for detecting the limonin content comprises the following steps: extracting certain initial juice, preparing a detection solution by using dichloromethane as an extraction solvent, using a PDA detection device and a carbon-eighteen modified silica gel chromatographic column, using acetonitrile with volume fraction of 45% as a mobile phase, and detecting at the wavelength of 210nm, wherein the flow rate is 1mL/min, and the column temperature is 25 ℃.
In summary, in the bitter removing apparatus and the bitter removing method of the citrus juicer according to the embodiment of the present invention, the bitter removing apparatus of the citrus juicer includes: the citrus juice extracting device comprises a primary squeezing tank 1, a lifting pump 3, an adsorption resin tank 4, a liquid storage tank 7, a proportional valve 8, a PDA detection device 9 and a citrus juice tank 10, wherein the lifting pump 3 is connected with the primary squeezing tank 1 and the adsorption resin tank 4, adsorption resin for adsorbing limonin is arranged in the adsorption resin tank 4, the adsorption resin tank 4 is connected with the citrus juice tank 10 through the liquid storage tank 7, one end of the proportional valve 8 is connected with the liquid storage tank 7, the other end of the proportional valve 8 is connected between the lifting pump 3 and the adsorption resin tank 4, and the liquid storage tank is further connected with the PDA detection device 9. The debittering method of the citrus juice comprises the following steps: separating mandarin orange peel, primarily squeezing juice with pulp, adsorbing limonin in the primarily squeezed juice with adsorbent resin, detecting limonin content in the primarily squeezed juice with high performance liquid chromatography, comparing with the finished juice, mixing the primarily squeezed juice with a certain proportion in a liquid storage tank when the limonin content is lower than the finished juice, and adsorbing and debittering the primarily squeezed juice in the liquid storage tank with adsorbent resin when the limonin content is higher than the finished juice. The debitterizing device of the citrus juicer monitors the content of the citraline in the debitterizing process of the citrus juice, so that the flavor of the debitterized citrus juice is kept unchanged.
The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A debitterizing device of a citrus juicer, comprising: the citrus juice extracting device comprises a primary squeezing tank, a lifting pump, an adsorption resin tank, a liquid storage tank, a proportional valve, a PDA detection device and a citrus juice tank, wherein the lifting pump is connected with the primary squeezing tank and the adsorption resin tank, adsorption resin for adsorbing limonin is arranged in the adsorption resin tank, the adsorption resin tank is connected with the citrus juice tank through the liquid storage tank, one end of the proportional valve is connected with the liquid storage tank, the other end of the proportional valve is connected between the lifting pump and the adsorption resin tank, and the liquid storage tank is further connected with the PDA detection device.
2. A debittering device of citrus juicer according to claim 1, characterized in that a filter is further arranged between the primary cell and the lift pump.
3. A debittering device of citrus juicer according to claim 1, characterized in that an elution liquid tank is connected to the adsorption resin tank.
4. A debittering device of citrus juicer according to claim 1, characterized in that the adsorption resin tank is connected with a regeneration liquid tank.
5. A method of debittering citrus juice comprising:
separating the citrus peel and initially pressing the citrus pulp to obtain a juice;
adsorbing limonin in the virgin juice by using adsorption resin;
detecting the limonin content in the initial juice by adopting a high performance liquid chromatography and comparing the content with the finished juice, mixing a certain proportion of the initial juice in the liquid storage tank when the limonin content is lower than the finished juice, and absorbing and debitterizing the initial juice in the liquid storage tank by adsorption resin when the limonin content is higher than the finished juice.
6. A method of debittering of citrus juice according to claim 5, wherein said adsorbent resin comprises HP-20 adsorbent resin.
7. A method of debittering of citrus juice as claimed in claim 5 wherein the adsorption resin is eluted with an organic solvent after saturation of the adsorption resin, the organic solvent comprising ethanol or acetone.
8. A method of debittering of citrus juice according to claim 7, characterized in that after elution of the limonin adsorbed by the adsorbent resin, the adsorbent resin is subjected to regenerative cleaning with alkali or acid to restore the adsorption capacity of the adsorbent resin.
9. The method of debittering of citrus juice according to claim 5, wherein high performance liquid chromatography detection of limonin content comprises:
extracting certain initial juice, and preparing a detection solution by taking dichloromethane as an extraction solvent;
a PDA detection device and a carbon-eighteen modified silica gel chromatographic column are adopted, acetonitrile with the volume fraction of 45% is used as a mobile phase, the flow rate is 1mL/min, the column temperature is 25 ℃, and the detection is carried out at the wavelength of 210 nm.
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| CN201910925420.3A CN110651931A (en) | 2019-09-27 | 2019-09-27 | Debitterizing device and debitterizing method of orange juicer |
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| CN201910925420.3A CN110651931A (en) | 2019-09-27 | 2019-09-27 | Debitterizing device and debitterizing method of orange juicer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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