A kind of preparation method of cottonseed meal protein powder of reducing phenol by high-voltage corona electric field

Abstract

The invention discloses a method for preparing cottonseed meal albumen powder by adopting high-voltage corona electric field phenol reduction. The method comprises the following steps: (1) grinding cottonseed meal; (2) adding water into screened cottonseed meal according to a weight ratio of 1:0.8-1, infiltrating, adding cellulase which accounts for 0.08-0.12 percent of the cottonseed meal in weight and hemicellulase which accounts for 0.05-0.1 percent of the cottonseed meal in weight, uniformly mixing, controlling the temperature to be 50-60 DEG C, wherein the temperature preserving time is 10.0-14.0 hours; (3) arranging cottonseed meal powder subjected to enzymolysis in a high-voltage corona field with the voltage of 25000-200000V for 8.0-16.0 hours, wherein the thickness of the cottonseed meal is 5-20mm, and performing spray drying so as to obtain the cottonseed meal albumen powder, wherein the spray flow is 20-30mL / min, the feeding temperature is 36-41 DEG C, and the air inlet temperature is 160-190 DEG C. The method is feasible and is simple and convenient to operate. The cottonseed meal albumen powder prepared by adopting the method is low in cost and good in effect and is not polluted by other substances, and according to measurement, the content of free gossypol in the detoxified cottonseed meal albumen powder is less than 0.04 percent.

Description

technical field

[0001] The invention belongs to the field of food processing, and more specifically relates to a method for preparing cottonseed meal protein powder with phenol reduced in a high-voltage corona electric field. Background technique

[0002] Cottonseed meal is a by-product of cottonseed oil extraction. The by-products of extracting oil from cottonseed after husking are called cottonseed cake and meal, the cake after oil extraction by pressing, and the meal after pre-press extraction or direct extraction. In cottonseed cake, crude protein content is 20-44%, crude fat is 1-7%, crude fiber is 10-20%, crude ash is 5-8%, free gossypol is 1.0-4.8%, and cottonseed protein It is close to soybean protein in quality, and its nutritional value is also higher than that of cereal protein. It has 8 essential amino acids, especially the lysine content is as high as 6%. At present, my country's annual output of cottonseed is more than 8 million tons, and the annual output of...

Examples

Embodiment 1

[0020] A preparation method of cottonseed meal protein powder for reducing phenol in a high-voltage corona electric field, the steps are as follows:

[0021] (1) Cottonseed cake is crushed to pass through a 100 or 110 or 120 or 130 or 140 mesh sieve;

[0022] (2) Take 1 kg of sieved cottonseed cake, add 0.8 kg of water, soak for 3.0 h, add 0.8 g of cellulase and 0.5 g of hemicellulase, mix well, control the temperature at 50°C, and hold for 10.0 h.

[0023] (3) The enzymatically hydrolyzed cottonseed cake is placed in a high-voltage corona field of 40,000 volts for 9.0 hours. The thickness of the cottonseed cake is 10mm, and the distance between the parallel metal wires is 70mm. The distance between the vertically downward metal discharge needles is 70mm, and the distance between the bottom plate and the metal mesh is 110mm. The detoxified cottonseed cake is crushed through 100 sieves, and then spray-dried (spray flow rate 20mL / min, feed temperature 36℃ , inlet air temperatur...

Embodiment 2

[0025] Cottonseed meal protein powder with high-voltage corona electric field for reducing phenol of Preparation method, its steps are as follows:

[0026] (1) Cottonseed cake, crushed and passed through a 100-mesh sieve.

[0027] (2) Take 1kg of cottonseed cake powder that has passed through a 100-mesh sieve, add 0.9kg of water, soak for 3.5h, add 1.0g of cellulase and 0.75g of hemicellulase, mix well, control the temperature at 55°C, and keep warm for 11.0h.

[0028] (3) The enzymatically hydrolyzed cottonseed cake is placed in a 50,000-volt high-voltage corona field for 11.0 hours, and the thickness of the cottonseed cake is 10mm. The distance between the parallel metal wires is 70mm, and the vertical The distance between the downward metal discharge needles is 70mm, the distance between the bottom plate and the metal mesh is 110mm, and the detoxified cottonseed cake is spray-dried (spray flow rate 20mL / min, feed temperature 38°C, air inlet temperature 170°C) , to obtain ...

Embodiment 3

[0031] Cottonseed meal protein powder with high-voltage corona electric field for reducing phenol of Preparation method, its steps are as follows:

[0032] (1) Take the cottonseed cake, crush it, and pass it through a 100-mesh sieve.

[0033] (2) Take 1kg of cottonseed cake powder that has passed through a 100-mesh sieve, add 1kg of water, soak for 4.0h, add 1.2g of cellulase and 0.9g of hemicellulase, mix well, control the temperature at 57°C, and keep warm for 13.0h.

[0034] (3) The enzymatically hydrolyzed cottonseed cake is placed in a 100,000-volt high-voltage corona field for 12.0 hours. The thickness of the cottonseed cake is 10mm, and the distance between the parallel metal wires is 70mm. The distance between the downward metal discharge needles is 70mm, the distance between the bottom plate and the metal mesh is 110mm, and the detoxified cottonseed cake is spray-dried (spray flow rate 25mL / min, feed temperature 36°C, air inlet temperature 190°C) , to obtain cottons...

technical field

[0001] The invention belongs to the field of food processing, and more specifically relates to a method for preparing cottonseed meal protein powder with phenol reduced in a high-voltage corona electric field. Background technique

[0002] Cottonseed meal is a by-product of cottonseed oil extraction. The by-products of extracting oil from cottonseed after husking are called cottonseed cake and meal, the cake after oil extraction by pressing, and the meal after pre-press extraction or direct extraction. In cottonseed cake, crude protein content is 20-44%, crude fat is 1-7%, crude fiber is 10-20%, crude ash is 5-8%, free gossypol is 1.0-4.8%, and cottonseed protein It is close to soybean protein in quality, and its nutritional value is also higher than that of cereal protein. It has 8 essential amino acids, especially the lysine content is as high as 6%. At present, my country's annual output of cottonseed is more than 8 million tons, and the annual output of...

Examples

Embodiment 1

[0020] A preparation method of cottonseed meal protein powder for reducing phenol in a high-voltage corona electric field, the steps are as follows:

[0021] (1) Cottonseed cake is crushed to pass through a 100 or 110 or 120 or 130 or 140 mesh sieve;

[0022] (2) Take 1 kg of sieved cottonseed cake, add 0.8 kg of water, soak for 3.0 h, add 0.8 g of cellulase and 0.5 g of hemicellulase, mix well, control the temperature at 50°C, and hold for 10.0 h.

[0023] (3) The enzymatically hydrolyzed cottonseed cake is placed in a high-voltage corona field of 40,000 volts for 9.0 hours. The thickness of the cottonseed cake is 10mm, and the distance between the parallel metal wires is 70mm. The distance between the vertically downward metal discharge needles is 70mm, and the distance between the bottom plate and the metal mesh is 110mm. The detoxified cottonseed cake is crushed through 100 sieves, and then spray-dried (spray flow rate 20mL / min, feed temperature 36℃ , inlet air temperatur...

Embodiment 2

[0025] Cottonseed meal protein powder with high-voltage corona electric field for reducing phenol of Preparation method, its steps are as follows:

[0026] (1) Cottonseed cake, crushed and passed through a 100-mesh sieve.

[0027] (2) Take 1kg of cottonseed cake powder that has passed through a 100-mesh sieve, add 0.9kg of water, soak for 3.5h, add 1.0g of cellulase and 0.75g of hemicellulase, mix well, control the temperature at 55°C, and keep warm for 11.0h.

[0028] (3) The enzymatically hydrolyzed cottonseed cake is placed in a 50,000-volt high-voltage corona field for 11.0 hours, and the thickness of the cottonseed cake is 10mm. The distance between the parallel metal wires is 70mm, and the vertical The distance between the downward metal discharge needles is 70mm, the distance between the bottom plate and the metal mesh is 110mm, and the detoxified cottonseed cake is spray-dried (spray flow rate 20mL / min, feed temperature 38°C, air inlet temperature 170°C) , to obtain ...

Embodiment 3

[0031] Cottonseed meal protein powder with high-voltage corona electric field for reducing phenol of Preparation method, its steps are as follows:

[0032] (1) Take the cottonseed cake, crush it, and pass it through a 100-mesh sieve.

[0033] (2) Take 1kg of cottonseed cake powder that has passed through a 100-mesh sieve, add 1kg of water, soak for 4.0h, add 1.2g of cellulase and 0.9g of hemicellulase, mix well, control the temperature at 57°C, and keep warm for 13.0h.

[0034] (3) The enzymatically hydrolyzed cottonseed cake is placed in a 100,000-volt high-voltage corona field for 12.0 hours. The thickness of the cottonseed cake is 10mm, and the distance between the parallel metal wires is 70mm. The distance between the downward metal discharge needles is 70mm, the distance between the bottom plate and the metal mesh is 110mm, and the detoxified cottonseed cake is spray-dried (spray flow rate 25mL / min, feed temperature 36°C, air inlet temperature 190°C) , to obtain cottons...