CN103340451A - Superfine peeled walnut thick pulp and preparation method thereof - Google Patents
Superfine peeled walnut thick pulp and preparation method thereof Download PDFInfo
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- CN103340451A CN103340451A CN2013102514753A CN201310251475A CN103340451A CN 103340451 A CN103340451 A CN 103340451A CN 2013102514753 A CN2013102514753 A CN 2013102514753A CN 201310251475 A CN201310251475 A CN 201310251475A CN 103340451 A CN103340451 A CN 103340451A
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Abstract
The application of the invention provides superfine peeled walnut thick pulp and a preparation method thereof. The preparation method comprises the following steps of: grinding walnut kernels to obtain pulped walnut sauce with particle size less than 150 microns; and removing skins and dregs of the pulped walnut sauce in a sedimentation and centrifugation manner so as to obtain the superfine peeled walnut thick pulp which has the weight percent of over 98% and is allowed to pass through a 300-mesh screen. The preparation method disclosed by the application can be used for removing the walnut skins with strong bitterness so as to prepare the superfine peeled walnut thick pulp from the walnut kernels, is economic, has an environmental protection effect, and facilitates industrialized production.
Description
Technical field
The application relates to food processing field, particularly relates to a kind of ultra-fine decortication walnut underflow and preparation method thereof.
Background technology
Ultra-fine walnut underflow is a kind of ultra-fine walnut cream with certain flowability that is made by the walnut kernel deep processing, does not add any food auxiliary material and additive, and batching is 100% walnut kernel.
As everyone knows, the walnut kernel nutritive value is high, but the walnut kernel fur clothing has very strong bitter taste.For a long time and since the existence of walnut kernel fur clothing and fur clothing be difficult to remove, influenced the extensive use of walnut kernel as food ingredient.
At present, the decortication mode of walnut kernel generally has two classes, one class is the wet method decortication, as be soaked in water and heat and boil decortication or peel with certain density processing aid caustic soda (NaOH) aqueous solution soaking, its shortcoming is the energy consumption height of processing, and environmental pollution is serious, has lost the walnut nutritious of a part, and the product needed that obtains preservation again after the drying again, or undried chilled storage; Another kind of is dry method decortication, generally be walnut kernel earlier through overbaking and cooling, hand rubbing peeling then, its shortcoming is the decortication weak effect, efficient is low, manual operations is wayward, so unsuitable wide-scale adoption in producing.
Summary of the invention
The application's purpose provides a kind of preparation method of ultra-fine decortication walnut underflow.
Particularly, the application provides a kind of preparation method of ultra-fine decortication walnut underflow, and described method comprises: grind the walnut kernel raw material, obtain particle diameter less than 150 microns slurry shape walnut cream; Make described slurry shape walnut cream remove the skin slag in the centrifugal mode of sedimentation, obtaining weight fraction can be by the ultra-fine decortication walnut underflow of 300 eye mesh screens more than 98%.
The fineness of the ultra-fine decortication walnut underflow among the application is to measure according to the method that the wet method filter cloth sieves, with reference to the measuring method of the fineness among the agricultural industry criteria NY/T958 of the People's Republic of China (PRC) (2006).
Wherein, because the walnut fat content is higher, therefore, when walnut kernel was crushed to particle diameter less than 150 microns, the walnut kernel particulate had presented the pulpous state form with good fluidity.Therefore, the used term " slurry shape walnut cream " of the application refers to that walnut kernel has the walnut kernel slurry of certain flowability when being ground to particle diameter less than 150 microns.
Simultaneously, in this application, term " walnut " includes but not limited to: walnut, hickory nut, U.S.'s walnut, green fruit, fibert etc.
Another purpose of the application provides a kind of ultra-fine decortication walnut underflow, its walnut kernel by 100% makes, the weight fraction of described ultra-fine decortication walnut underflow can pass through 300 eye mesh screens more than 98%, protein content is more than or equal to weight fraction 15%, fat content is more than or equal to weight fraction 60%, moisture is smaller or equal to weight fraction 2.5%, and described ultra-fine decortication walnut underflow prepares by aforesaid preparation method.Prepared ultra-fine decortication walnut underflow is the slurry of color and luster homogeneous, and tissue is fine and smooth, and the impurity sense that no walnut kernel fur clothing brings has strong baking walnut fragrance, and delicate mouthfeel is soft and smooth, the bitter taste that no walnut kernel fur clothing brings.
In some embodiments, described grinding can comprise corase grind and correct grinding.
In some embodiments, described corase grind can be finished with colloid mill, and described correct grinding can be finished with three-stage roll mill.
Certainly, used corase grind and correct grinding can also be finished by alternate manner known in the art among the application, such as finish corase grind and correct grinding with two colloid mills of series connection.
In some embodiments, the centrifugal mode of described sedimentation can realize by sedimentation centrifuge.
In some embodiments, the centrifugal mode of described sedimentation can realize by dull and stereotyped sedimentation centrifuge.
In some embodiments, the centrifugal mode of described sedimentation can realize by horizontal spiral discharge sedimentation centrifuge.
In some embodiments, the centrifugal separation factor of described sedimentation can be 600-6000.Computing formula F according to separation factor
r=ω
2(ω represents the angular velocity of rotation of sedimentation centrifuge to r/g, r represents the radius of sedimentation centrifuge, g is acceleration of gravity), separation factor depends on radius and the angular velocity of rotation of used sedimentation centrifuge, therefore, can the angular speed of centrifuge be set according to radius and the selected separation factor of centrifuge.
Wherein, when selecting the separation factor of sedimentation centrifuge, what mainly consider is centrifugation time, if select higher separation factor, centrifugation time just should be shorter, otherwise the process of the decortication while also can be removed the protein in the walnut; If select lower separation factor, centrifugation time just should be longer, otherwise the decortication effect is bad.Therefore the selection of separation factor is the result that centrifugation time and centrifugal effect are taken all factors into consideration.
In some embodiments, described method can be included in grinds before the walnut kernel raw material, the step of baking walnut kernel raw material.
In some embodiments, wherein said walnut kernel raw material can be baked to moisture smaller or equal to weight fraction 2.5%.Wherein, can achieve this end by manner known in the art, such as baking in the multifunctional oven of temperature in 120-180 ℃ scope 10-20 minute, just can make the moisture of walnut kernel raw material smaller or equal to weight fraction 2.5% basically.
Test is found, baking walnut kernel raw material helps to guarantee that the moisture of the decortication walnut underflow that finally obtains is smaller or equal to weight fraction 2.5% before grinding the walnut kernel raw material, this is conducive to guarantee the decortication walnut underflow normal temperature placement 1 year that finally obtains and never degenerate, the reduction of moisture more is conducive to the reduction of underflow viscosity on the other hand, and more low more being conducive to of viscosity removes the skin slag in the centrifugal mode of sedimentation.
The decortication walnut underflow that obtains according to the application's method can be used as that the food industry batching is used or is directly edible as food, is particularly useful for the processing of food such as walnut milk, walnut beverage and seasoning walnut cream.
Compared with prior art, the application's technical scheme has following benefit:
1, the application adopts the centrifugal mode of sedimentation, has not only removed the walnut kernel fur clothing with very strong bitter taste, has realized making decortication walnut underflow from walnut kernel, and has been convenient to the industrialization use;
2, compare with wet method peeling of the prior art, the application's method does not need consume water resources, do not need processing aid caustic soda (NaOH), and owing to do not need to be soaked in water, so the follow-up consumes energy that do not need to store after the drying again, or the undried chilled storage, therefore, the application's the economic environmental protection of ultra-fine decortication walnut underflow preparation method;
3, compare with manual dry method peeling of the prior art, the application's method has been saved manually-operated, has shortened process time, and has guaranteed the decortication effect of final products, is convenient to suitability for industrialized production;
4, product fineness thin (close with chocolate fineness), delicate mouthfeel is soft and smooth.Because after the sedimentation centrifugation decortication slagging-off product cut size is obviously diminished, therefore the preparation method with the application can obtain ultra-fine product, and because the walnut kernel fur clothing is mainly fibre composition, certain toughness is arranged, be difficult for grinding to form ultramicro powder, therefore especially the grinding under the oil-containing conditions of higher is more difficult, is the resulting fineness of preparation method that can't obtain the application with the mode of tradition grinding.
The specific embodiment
Describing the application's embodiment below by embodiment, one of ordinary skill in the art appreciates that these specific embodiments only show the technical application scheme of selecting for the purpose that reaches the application, is not the restriction to technical scheme.According to the application's instruction, be obvious in conjunction with prior art to the improvement of present techniques scheme, all belong to the scope of the application's protection.
Embodiment 1
(the Qingdao peanut machinery Co., Ltd that newly plants, model: baking walnut kernel raw material 10min (the walnut kernel raw material originates from Yunnan) DGKX-B) makes the moisture of cooled walnut kernel raw material smaller or equal to weight fraction 2.5% at 180 ℃ multifunctional ovens.Then through colloid mill (Langfang General Machinery Co. Ltd., model: JMS-180A) corase grind, and use three-stage roll mill (Bangbu Lv Yuan fine gtinding equipment Co., Ltd subsequently, model: S320) correct grinding, to obtain particle diameter less than 150 microns slurry shape walnut cream, (Jiangsu Hu Jiang centrifuge is made Co., Ltd finally by crossing dull and stereotyped sedimentation centrifuge, model: the PSC800-N) slagging-off of peeling, continue 2 minutes, can be by the ultra-fine decortication walnut underflow of 300 eye mesh screens more than 98% to obtain weight fraction.
Wherein, because the separation factor that sedimentation is centrifugal is chosen as 1006, the diameter of dull and stereotyped sedimentation centrifuge is 800mm, and therefore the rotating speed of dull and stereotyped sedimentation centrifuge is set to 1500r/min.
The quality index of the ultra-fine decortication walnut concentrated slurry product that obtains is: the product color uniformity, tissue is fine and smooth, the impurity sense that no walnut kernel fur clothing brings, have strong baking walnut fragrance, delicate mouthfeel is soft and smooth, the bitter taste that no walnut fur clothing brings, the weight fraction of product can pass through 300 eye mesh screens more than 98%, the protein of product is more than or equal to weight fraction 15%, and the fat of product is more than or equal to weight fraction 60%, and moisture is smaller or equal to weight fraction 2.5%.
The sealing of product normal temperature was placed 1 year, and is not rotten.
Embodiment 2
In 120 ℃ multifunctional ovens (the Qingdao peanut machinery Co., Ltd that newly plants, model: baking walnut kernel raw material (the walnut kernel raw material originates from Yunnan) DGKX-B), continue 20min, make the moisture of cooled walnut kernel raw material smaller or equal to weight fraction 2.5%.Then through colloid mill (Langfang General Machinery Co. Ltd., model: JMS-180A) corase grind, and use three-stage roll mill (Bangbu Lv Yuan fine gtinding equipment Co., Ltd subsequently, model: S320) correct grinding, to obtain particle diameter less than 150 microns slurry shape walnut cream, finally by horizontal spiral discharge sedimentation centrifuge (big centrifuge Co., Ltd during the Zhangjiagang is prosperous, model: the LW220*880) slagging-off of peeling, can be by the ultra-fine decortication walnut underflow of 300 eye mesh screens more than 98% to obtain weight fraction.
Wherein, the separation factor of horizontal spiral discharge sedimentation centrifuge is 3038, and roller diameter is 220mm, rotary drum length 880mm, so the rotary drum rotating speed is 5000r/min.
The quality index of the ultra-fine decortication walnut concentrated slurry product that obtains is: the product color uniformity, tissue is fine and smooth, the impurity sense that no walnut kernel fur clothing brings, have strong baking walnut fragrance, delicate mouthfeel is soft and smooth, the bitter taste that no walnut fur clothing brings, the weight fraction of product can pass through 300 eye mesh screens more than 98%, the protein of product is more than or equal to weight fraction 15%, and the fat of product is more than or equal to weight fraction 60%, and moisture is smaller or equal to weight fraction 2.5%.
The sealing of product normal temperature was placed 1 year, and is not rotten.
Claims (9)
1. the preparation method of a ultra-fine decortication walnut underflow, described method comprises:
Grind the walnut kernel raw material, obtain particle diameter less than 150 microns slurry shape walnut cream;
Make described slurry shape walnut cream remove the skin slag in the centrifugal mode of sedimentation, obtain weight fraction passes through 300 eye mesh screens more than 98% ultra-fine decortication walnut underflow.
2. preparation method according to claim 1, wherein, described grinding comprises corase grind and correct grinding.
3. preparation method according to claim 2, wherein, described corase grind is finished with colloid mill, and described correct grinding is finished with three-stage roll mill.
4. preparation method according to claim 1, wherein, the centrifugal mode of described sedimentation realizes by sedimentation centrifuge.
5. preparation method according to claim 4, wherein, described sedimentation centrifuge is dull and stereotyped sedimentation centrifuge or horizontal spiral discharge sedimentation centrifuge.
6. according to claim 4 or 5 described preparation methods, wherein, the separation factor of described sedimentation centrifuge is 600-6000.
7. preparation method according to claim 1, described method are included in and grind before the walnut kernel raw material, the step of baking walnut kernel raw material.
8. preparation method according to claim 7, wherein, described walnut kernel raw material is baked to moisture smaller or equal to weight fraction 2.5%.
9. ultra-fine decortication walnut underflow, its walnut kernel by 100% makes, the weight fraction of described ultra-fine decortication walnut underflow passes through 300 eye mesh screens more than 98%, protein content is more than or equal to weight fraction 15%, fat content is more than or equal to weight fraction 60%, moisture is smaller or equal to weight fraction 2.5%, and described ultra-fine decortication walnut underflow prepares by each described method among the claim 1-8.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101099570A (en) * | 2007-07-24 | 2008-01-09 | 庄玲伶 | Intelligence developmental nutritive oral liquid and its preparation method |
| CN101731681A (en) * | 2008-11-05 | 2010-06-16 | 北京朔方尚德科技发展有限公司 | Method for producing walnut main agent |
| CN102771843A (en) * | 2012-07-11 | 2012-11-14 | 广元棒仁食品有限公司 | Dry process walnut sauce and production method of dry process walnut sauce |
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2013
- 2013-06-24 CN CN201310251475.3A patent/CN103340451B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101099570A (en) * | 2007-07-24 | 2008-01-09 | 庄玲伶 | Intelligence developmental nutritive oral liquid and its preparation method |
| CN101731681A (en) * | 2008-11-05 | 2010-06-16 | 北京朔方尚德科技发展有限公司 | Method for producing walnut main agent |
| CN102771843A (en) * | 2012-07-11 | 2012-11-14 | 广元棒仁食品有限公司 | Dry process walnut sauce and production method of dry process walnut sauce |
Non-Patent Citations (1)
| Title |
|---|
| 周凌霄等: "驻颜益寿――风味核桃酱", 《上海调味品》, no. 03, 31 December 2000 (2000-12-31), pages 31 * |
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Address after: 102212 Beijing city Changping District Xingshou Xiao Cun strawberry exposition processing center Patentee after: BEIJING SHUOFANG SCIENCE AND TECHNOLOGY DEVELOPMENT CO., LTD. Address before: 102212 Beijing city Changping District Xingshou Xiao Cun strawberry exposition processing center Patentee before: Beijing Shuofang Shangde Technology Development Co., Ltd. |