CN103340451B - 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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- CN103340451B CN103340451B CN201310251475.3A CN201310251475A CN103340451B CN 103340451 B CN103340451 B CN 103340451B CN 201310251475 A CN201310251475 A CN 201310251475A CN 103340451 B CN103340451 B CN 103340451B
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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 thick pulp and preparation method thereof.
Background technology
Ultra-fine walnut thick pulp is a kind of ultra-fine walnut cream with certain fluidity obtained by walnut kernel deep processing, and do not add any food auxiliary material and additive, batching is the walnut kernel of 100%.
As everyone knows, walnut kernel high nutritive value, but walnut kernel fur clothing has very strong bitter taste.For a long time, due to the existence of walnut kernel fur clothing and fur clothing be difficult to remove, have impact on the extensive use of walnut kernel as food ingredient.
At present, the decortication mode of walnut kernel generally has two classes, one class is wet method decortication, boil decortication as being soaked in water and heating or peel by certain density processing aid caustic soda (NaOH) aqueous solution soaking, its shortcoming is that the energy consumption of processing is high, and environmental pollution is serious, have lost the walnut nutritious of a part, and the product needed obtained preservation again after drying again, or undried chilled storage; Another kind of is dry method decortication, and be generally that walnut kernel is first through overbaking and cooling, then hand rubbing peeling, its shortcoming is that exfoliant effect is poor, and efficiency is low, and manual operations is wayward, therefore should not adopt on a large scale in producing.
Summary of the invention
The object of the application is to provide a kind of preparation method of ultra-fine decortication walnut thick pulp.
Particularly, the application provides a kind of preparation method of ultra-fine decortication walnut thick pulp, and described method comprises: grinding walnut kernel raw material, obtains the slurry shape walnut cream that particle diameter is less than 150 microns; Make described slurry shape walnut cream remove skin slag in the mode that sedimentation is centrifugal, obtaining weight fraction more than 98% can by the ultra-fine decortication walnut thick pulp of 300 eye mesh screens.
The fineness of the ultra-fine decortication walnut thick pulp in the application is that the method for sieving according to wet method filter cloth is measured, with reference to the measuring method of the fineness in People's Republic of China (PRC) agricultural industry criteria NY/T958 (2006).
Wherein, because walnut fat content is higher, therefore, when walnut kernel be crushed to particle diameter be less than 150 microns time, walnut kernel particulate has presented the slurry form with good fluidity.Therefore, the term " slurry shape walnut cream " that the application is used refers to that walnut kernel has the walnut kernel slurry of certain fluidity when being ground to particle diameter and being less than 150 microns.
Meanwhile, in this application, term " walnut " includes but not limited to: walnut, hickory nut, U.S.'s walnut, green fruit, fibert etc.
Another object of the application is to provide a kind of ultra-fine decortication walnut thick pulp, it is obtained by the walnut kernel of 100%, the weight fraction more than 98% of described ultra-fine decortication walnut thick pulp can pass through 300 eye mesh screens, protein content is more than or equal to weight fraction 15%, fat content is more than or equal to weight fraction 60%, moisture is less than or equal to weight fraction 2.5%, and described ultra-fine decortication walnut thick pulp is prepared by preparation method as above.Obtained ultra-fine decortication walnut thick pulp is the homogeneous slurry of color and luster, and tissue is fine and smooth, and without the impurity sense that walnut kernel fur clothing brings, have strong baking walnut fragrance, delicate mouthfeel is soft and smooth, without the bitter taste that walnut kernel fur clothing brings.
In some embodiments, described grinding can comprise corase grind and fine grinding.
In some embodiments, described corase grind can come with colloid mill, and described fine grinding can come by three-stage roll mill.
Certainly, corase grind used in the application and fine grinding can also have been come by alternate manner known in the art, have such as come corase grind and fine grinding with two colloid mills of series connection.
In some embodiments, the mode that described sedimentation is centrifugal can be realized by sedimentation centrifuge.
In some embodiments, the mode that described sedimentation is centrifugal can be realized by dull and stereotyped sedimentation centrifuge.
In some embodiments, the mode that described sedimentation is centrifugal can be realized by horizontal spiral discharge sedimentation centrifuge.
In some embodiments, the separation factor that described sedimentation is centrifugal can be 600-6000.According to the computing formula F of 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 sedimentation centrifuge used, therefore, according to the radius of centrifuge and selected separation factor, the angular speed of centrifuge can be set.
Wherein, when selecting the separation factor of sedimentation centrifuge, main it is considered that centrifugation time, if select higher separation factor, centrifugation time just should be shorter, otherwise the process of decortication also can remove the protein in walnut simultaneously; If select lower separation factor, centrifugation time just should be longer, otherwise exfoliant effect is bad.Therefore the selection of separation factor is the result considered centrifugation time and centrifugal effect.
In some embodiments, before described method can be included in grinding 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 and is less than or equal to weight fraction 2.5%.Wherein, can be achieved this end by manner known in the art, such as in the multifunctional oven of temperature in the scope of 120-180 DEG C, toast 10-20 minute, the moisture of walnut kernel raw material substantially just can be made to be less than or equal to weight fraction 2.5%.
Test finds, the moisture toasting the decortication walnut thick pulp that walnut kernel raw material contributes to ensureing finally to obtain before grinding walnut kernel raw material is less than or equal to weight fraction 2.5%, this decortication walnut thick pulp normal temperature being conducive to ensureing finally to obtain is placed 1 year and never degenerates, the reduction of moisture is more conducive to the reduction of underflow viscosity on the other hand, and viscosity more low being more conducive to removes skin slag in the mode that sedimentation is centrifugal.
Can use or directly eat as food as food industry batching according to the decortication walnut thick pulp that the method for the application obtains, be particularly useful for the processing of the food such as walnut milk, walnut beverage and seasoning walnut cream.
Compared with prior art, the technical scheme of the application has following benefit:
1, the application's mode of adopting sedimentation centrifugal, is not only stripped of the walnut kernel fur clothing with very strong bitter taste, achieves and make decortication walnut thick pulp from walnut kernel, and is convenient to industrialization and uses;
2, compared with removing the peel with wet method of the prior art, the method of the application does not need to consume water resource, do not need processing aid caustic soda (NaOH), and owing to not needing to be soaked in water, store again do not need the consumption energy dry so follow-up after, or undried chilled storage, therefore, the economic environmental protection of ultra-fine decortication walnut thick pulp preparation method of the application;
3, compared with removing the peel with manual dry method of the prior art, the method for the application saves manual operation, shortens process time, and ensure that the exfoliant effect of final products, is convenient to suitability for industrialized production;
4, product fineness thin (close with contact angle'), delicate mouthfeel is soft and smooth.Product cut size can be made obviously to diminish after removing the gred with the decortication of sedimentation centrifugation, therefore ultra-fine product can be obtained by the preparation method of the application, and be mainly fibre composition due to walnut kernel fur clothing, there is certain toughness, not easily grind to form ultramicro powder, especially the grinding under the condition that oil-containing is higher more not easily, is therefore the fineness that obtains of the preparation method that cannot obtain the application by the mode of tradition grinding.
Detailed description of the invention
Describe the embodiment of the application below by embodiment, one of ordinary skill in the art appreciates that these specific embodiments only show object in order to reach the application and the enforcement technical scheme selected, is not the restriction to technical scheme.According to the instruction of the application, be obvious in conjunction with the improvement of prior art to technical scheme, all belong to the scope of the application's protection.
Embodiment 1
In the multifunctional ovens of 180 DEG C (Qingdao Xin Yi mechanical peanut Co., Ltd, model: DGKX-B) middle baking walnut kernel raw material 10min (walnut kernel raw material originates from Yunnan), make the moisture of cooled walnut kernel raw material be less than 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) fine grinding, to obtain the slurry shape walnut cream that particle diameter is less than 150 microns, eventually pass dull and stereotyped sedimentation centrifuge (Jiangsu Hu Jiang centrifuge Manufacturing Co., Ltd, model: PSC800-N) carry out decortication slagging-off, continue 2 minutes, can by the ultra-fine decortication walnut thick pulp of 300 eye mesh screens to obtain weight fraction more than 98%.
Wherein, due to separation factor centrifugal for sedimentation is chosen as 1006, the diameter of dull and stereotyped sedimentation centrifuge is 800mm, therefore the rotating speed of dull and stereotyped sedimentation centrifuge is set to 1500r/min.
The quality index of the ultra-fine decortication walnut thick pulp product obtained is: product color uniformity, tissue is fine and smooth, without the impurity sense that walnut kernel fur clothing brings, have strong baking walnut fragrance, delicate mouthfeel is soft and smooth, without the bitter taste that walnut fur clothing brings, the weight fraction more than 98% of product can pass through 300 eye mesh screens, 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 less than or equal to weight fraction 2.5%.
Product normal temperature sealing placement 1 year, not rotten.
Embodiment 2
In the multifunctional ovens of 120 DEG C (Qingdao Xin Yi mechanical peanut Co., Ltd, model: DGKX-B) middle baking walnut kernel raw material (walnut kernel raw material originates from Yunnan), continue 20min, make the moisture of cooled walnut kernel raw material be less than 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) fine grinding, to obtain the slurry shape walnut cream that particle diameter is less than 150 microns, finally by horizontal spiral discharge sedimentation centrifuge (Zhangjiagang Xin Zhong great centrifuge Co., Ltd, model: LW220*880) carry out decortication slagging-off, can by the ultra-fine decortication walnut thick pulp of 300 eye mesh screens to obtain weight fraction more than 98%.
Wherein, the separation factor of horizontal spiral discharge sedimentation centrifuge is 3038, and roller diameter is 220mm, rotary drum length 880mm, and therefore rotary drum rotating speed is 5000r/min.
The quality index of the ultra-fine decortication walnut thick pulp product obtained is: product color uniformity, tissue is fine and smooth, without the impurity sense that walnut kernel fur clothing brings, have strong baking walnut fragrance, delicate mouthfeel is soft and smooth, without the bitter taste that walnut fur clothing brings, the weight fraction more than 98% of product can pass through 300 eye mesh screens, 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 less than or equal to weight fraction 2.5%.
Product normal temperature sealing placement 1 year, not rotten.
Claims (7)
1. a preparation method for ultra-fine decortication walnut thick pulp, described method comprises:
Baking walnut kernel raw material is less than or equal to weight fraction 2.5% to moisture;
Grind the walnut kernel raw material of described baking, obtain the slurry shape walnut cream that particle diameter is less than 150 microns;
Make described slurry shape walnut cream remove skin slag in the mode that sedimentation is centrifugal, obtain the ultra-fine decortication walnut thick pulp of weight fraction more than 98% by 300 eye mesh screens, the moisture of wherein said ultra-fine decortication walnut thick pulp is less than or equal to weight fraction 2.5%.
2. preparation method according to claim 1, wherein, described grinding comprises corase grind and fine grinding.
3. preparation method according to claim 2, wherein, described corase grind colloid mill has come, and described fine grinding three-stage roll mill has been come.
4. preparation method according to claim 1, wherein, the centrifugal mode of described sedimentation is realized 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. the preparation method according to claim 4 or 5, wherein, the separation factor of described sedimentation centrifuge is 600-6000.
7. a ultra-fine decortication walnut thick pulp, it is obtained by the walnut kernel of 100%, the weight fraction more than 98% of described ultra-fine decortication walnut thick pulp is by 300 eye mesh screens, protein content is more than or equal to weight fraction 15%, fat content is more than or equal to weight fraction 60%, moisture is less than or equal to weight fraction 2.5%, and described ultra-fine decortication walnut thick pulp is prepared by the method according to any one of claim 1-6.
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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 |
|---|
| 驻颜益寿――风味核桃酱;周凌霄等;《上海调味品》;20001231(第03期);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. |