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Process for synthetically utilizing sweet potato for multi-stage co-production of starch and concentrated clear juice

A sweet potato and clear juice technology, applied in the field of food processing, can solve the problems affecting the production cost of enterprises, high cost of sewage treatment, and difficult treatment, and achieve the effects of ensuring production continuity, high product market acceptance, and strong operability.

Inactive Publication Date: 2019-04-02
JINAN INST OF FRUIT PRODS CHINA GENERAL SUPPLY & MARKETING COOP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0029] The method focus of CN106551309A and CN105054079A all lies in carrying out sweet potato starch extraction, repeated washing repeatedly, although starch extraction yield is higher, but the waste water that finally produces is more; Contain more sugar and protein in these waste waters, and processing difficulty is big, and treatment The cost is about 7-10 yuan / m 3 , the cost of sewage treatment is high, which ultimately affects the production cost of the enterprise

Method used

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  • Process for synthetically utilizing sweet potato for multi-stage co-production of starch and concentrated clear juice
  • Process for synthetically utilizing sweet potato for multi-stage co-production of starch and concentrated clear juice
  • Process for synthetically utilizing sweet potato for multi-stage co-production of starch and concentrated clear juice

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] The process of comprehensively utilizing sweet potato for multi-stage co-production of starch and concentrated clear juice comprises the following steps:

[0085] (1) Carry out two-stage cleaning and draining of the sweet potato raw material, hammer crushing to 40 mesh, and obtain the sweet potato raw material after crushing;

[0086] (2) Add water to the crushed sweet potato raw material in step (1), the crushed sweet potato raw material and water mass ratio are 1:2, after stirring for about 10min, filter through a 60 mesh vibrating screen to obtain the crude filtrate respectively and sweet potato residue;

[0087] (3) The crude filtrate is separated by a disc centrifuge, the centrifuge disc rotating speed is 7500r / min, the supernatant and sweet potato wet starch are obtained after centrifugation, and the sweet potato wet starch is dried at a drying temperature of 120°C. The drying time is 5 hours, and the sweet potato dry starch is obtained, and the moisture content ...

Embodiment 2

[0100] The process of comprehensively utilizing sweet potato for multi-stage co-production of starch and concentrated clear juice comprises the following steps:

[0101] (1) Carry out two-stage cleaning and draining of the sweet potato raw material, hammer crushing to 40 mesh, and obtain the sweet potato raw material after crushing;

[0102] (2) Add water to the crushed sweet potato raw material in step (1), the crushed sweet potato raw material and water mass ratio are 1:2, after stirring for about 10min, filter through a 60 mesh vibrating screen to obtain the crude filtrate respectively and sweet potato residue;

[0103] (3) The crude filtrate is separated by a disc centrifuge, the centrifuge disc rotating speed is 6000r / min, the supernatant and sweet potato wet starch are obtained after centrifugation, and the sweet potato wet starch is dried at a drying temperature of 120°C. The drying time is 5 hours, and the sweet potato dry starch is obtained, and the moisture content ...

Embodiment 3

[0115] The process of comprehensively utilizing sweet potato for multi-stage co-production of starch and concentrated clear juice comprises the following steps:

[0116] (1) Carry out two-stage cleaning and draining of the sweet potato raw material, hammer crushing to 40 mesh, and obtain the sweet potato raw material after crushing;

[0117] (2) Add water to the crushed sweet potato raw material in step (1), the crushed sweet potato raw material and water mass ratio are 1:2, after stirring for about 10min, filter through a 60 mesh vibrating screen to obtain the crude filtrate respectively and sweet potato residue;

[0118] (3) The crude filtrate is separated by a disc centrifuge, the centrifuge disc speed is about 5500r / min, and the supernatant and sweet potato wet starch are obtained after centrifugation, and the sweet potato wet starch is dried at a drying temperature of 120°C , the drying time is 5 hours, and the sweet potato dry starch is obtained, and the moisture conten...

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Abstract

The invention belongs to the technical field of food processing, and in particular, relates to a process for synthetically utilizing sweet potato for multi-stage co-production of starch and a concentrated clear juice. The process includes the following steps: (1) cleaning, draining and crushing a sweet potato raw material; (2) adding water, stirring and filtering; (3) carrying out centrifugal separation of a crude filtrate and drying wet starch; and mixing the supernatant with the sweet potato raw material, and continuing to produce a crude filtrate and sweet potato residues; (4) adding pure water to the sweet potato residue, adding alpha-high temperature amylase, and carrying out enzymolysis to obtain a sweet potato turbid juice I; (5) adding an acid to the sweet potato turbid juice I, and carrying out secondary enzymolysis, to obtain a sweet potato turbid juice II; (6) carrying out ultrafiltration of the sweet potato turbid juice II; and (7) concentrating the sweet potato clear juicein vacuum and sterilizing to obtain the concentrated sweet potato clear juice product. The process has the advantages of simple process, high operability, and high product market acceptance, solves the disadvantages of complicated process of a part of researched by-products and low market acceptance of products, greatly reduces wastewater discharge and saves the production cost.

Description

technical field [0001] The invention belongs to the technical field of food processing, and in particular relates to a process for comprehensively utilizing sweet potato for multi-stage co-production of starch and concentrated clear juice. Background technique [0002] Due to the high added value of sweet potato starch, the production of sweet potato starch in the food field is currently mostly done by crushing the sweet potato and washing it repeatedly to collect the starch. This traditional processing method will produce a large amount of industrial wastewater that is difficult to treat. The treatment of this wastewater not only requires a large investment in sewage treatment, but also requires more time and complicated treatment processes. At present, many scholars in China have conducted research on this industrial problem. The relevant reports mainly include the use of waste water to extract protein and produce microbial oil, polysaccharide or lactic acid. These proces...

Claims

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Application Information

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IPC IPC(8): A23L2/04A23L2/08A23L2/74A23L2/84C08B30/04
CPCA23L2/04A23L2/08A23L2/087A23L2/74A23L2/84C08B30/04
Inventor 马寅斐和法涛赵岩初乐丁辰葛邦国
Owner JINAN INST OF FRUIT PRODS CHINA GENERAL SUPPLY & MARKETING COOP
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