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Method of utilizing soybean aqueous enzymatic method hydrolysate and residue to prepare Qianye tofu

A technology of thousand-sheet tofu and hydrolyzate, which is applied in the field of preparing thousand-sheet tofu, can solve the problems of easy loss of nutrients and moisture, and achieve the effects of shortening freezing time, improving elasticity and water absorption, and reducing the growth of microorganisms.

Inactive Publication Date: 2017-09-05
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a method for preparing thousand-leaf tofu using enzymatic hydrolyzate and residue, so as to solve the problem of easy loss of nutrients and water in the preparation process of thousand-leaf tofu , and apply the hydrolyzate and waste residue produced in the process of extracting soybean oil by enzymatic method to improve the added value of its products

Method used

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  • Method of utilizing soybean aqueous enzymatic method hydrolysate and residue to prepare Qianye tofu

Examples

Experimental program
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Effect test

Embodiment 1

[0023] The cleaned and pulverized soybeans are extruded and extruded for pretreatment, and the extruded extruded product is mixed with water at a volume ratio of 1:6 to obtain a mixed solution. Under the condition that Ph is 9, alkaline protease Protex 6L is added thereto, Keeping the Ph value constant, under stirring in a water bath at 55°C, perform enzymolysis for 3 hours to obtain an enzymolysis solution, centrifuge the enzymolysis solution to obtain free oil, emulsion, hydrolyzate and residue, collect the hydrolyzate, and keep the inlet temperature at 160°C , spray drying at an outlet temperature of 67°C to obtain aqueous enzymatic soybean protein. Homogenize 67 to 70 parts by weight of ice water, 14 to 17 parts by weight of soybean protein by water enzymatic method, and 6 to 8 parts by weight of residue of water enzymatic method for 10 minutes, add 2 to 3 parts by weight of soybean oil, 0.12 to 0.21 parts by weight of grain aminoacyltransaminase, 4-7 parts by weight of ca...

Embodiment 2

[0025] The cleaned and pulverized soybeans are extruded and extruded for pretreatment, and the extruded extruded product is mixed with water at a volume ratio of 1:6 to obtain a mixed solution. Under the condition that Ph is 9, alkaline protease Protex 6L is added thereto, Keeping the Ph value constant, under stirring in a water bath at 55°C, perform enzymolysis for 3 hours to obtain an enzymolysis solution, centrifuge the enzymolysis solution to obtain free oil, emulsion, hydrolyzate and residue, collect the hydrolyzate, and keep the inlet temperature at 160°C , spray drying at an outlet temperature of 67°C to obtain aqueous enzymatic soybean protein. Homogenize 67 to 70 parts by weight of ice water, 14 to 17 parts by weight of soybean protein by water enzymatic method, and 6 to 8 parts by weight of residue of water enzymatic method for 10 minutes, add 2 to 3 parts by weight of soybean oil, 0.12 to 0.21 parts by weight of grain aminoacyltransaminase, 4-7 parts by weight of ca...

Embodiment 3

[0027] The cleaned and pulverized soybeans are extruded and extruded for pretreatment, and the extruded extruded product is mixed with water at a volume ratio of 1:6 to obtain a mixed solution. Under the condition that Ph is 9, alkaline protease Protex 6L is added thereto, Keeping the Ph value constant, under stirring in a water bath at 55°C, perform enzymolysis for 3 hours to obtain an enzymolysis solution, centrifuge the enzymolysis solution to obtain free oil, emulsion, hydrolyzate and residue, collect the hydrolyzate, and keep the inlet temperature at 160°C , spray drying at an outlet temperature of 67°C to obtain aqueous enzymatic soybean protein. Homogenize 67 to 70 parts by weight of ice water, 14 to 17 parts by weight of soybean protein by water enzymatic method, and 6 to 8 parts by weight of residue of water enzymatic method for 10 minutes, add 2 to 3 parts by weight of soybean oil, 0.12 to 0.21 parts by weight of grain aminoacyltransaminase, 4-7 parts by weight of ca...

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Abstract

The invention belongs to the technical field of food and mainly relates to a method of utilizing soybean aqueous enzymatic method hydrolysate and residue to prepare Qianye tofu. The method includes following steps: adopting an aqueous enzymatic method to extract soybean to obtain free oil, emulsion, hydrolysate and residue; spray-drying the hydrolysate to obtain aqueous enzymatic method soybean protein; homogenizing ice water, the aqueous enzymatic method soybean protein and the aqueous enzymatic method residue, adding soybean oil, glutamine transaminase, tapioca modified starch, edible salt, gourmet powder and white sugar, mixing, and pulping to obtain paste; scraping the surface of the paste to be flat; putting in a disc, freezing at high pressure to obtain a formed product, dicing, and freeze-storing at normal pressure to obtain Qianye tofu. High-pressure freezing technology is utilized, so that compared with Qianye tofu produced by conventional processing modes, ice crystals formed by freezing are small in size and uniform in distribution in the Qianye tofu, water loss is small, and quality and taste of the Qianye tofu are improved effectively.

Description

technical field [0001] The invention discloses a method for preparing thousand-sheet bean curd by utilizing soybean water enzymatic hydrolyzate and residue, and belongs to the technical field of soybean product processing. Background technique [0002] Aqueous enzymatic method is a new way of extracting oil from oil plants by using the water phase containing biological enzymes as the extraction medium. Aqueous enzymatic method, as a green and environment-friendly oil extraction method, has received extensive attention. In the process of extracting oil by aqueous enzymatic method, four parts will be produced: free oil, emulsion, hydrolyzate and residue. Hydrolyzate and residue are the by-products of the water enzymatic method, which are rich in protein, sugar and dietary fiber, but there are few studies on it at this stage, and the degree of commercialization is also low. [0003] Thousand-page tofu, also known as fennel tofu, is a soy product that has become popular in rec...

Claims

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Application Information

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IPC IPC(8): A23C20/02A23L11/45
CPCA23C20/025
Inventor 齐宝坤江连洲徐靓李杨隋晓楠王中江丁俭陈思
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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