Method for producing dephenolizing cotton protein by cottonseed cold press and mixed solvent primary leaching

Abstract

The invention discloses an once immersed dephenolizing cotton protein manufacturing method through cotton seed cold press composite solvent, which comprises the following steps: adopting cotton seed as raw material, grading, proceeding cold pressing to produce oil at 15-20%, adopting carbinol and skellysolve B as solvent once immersed fat and gossypol, squeezing, drying, grinding, separating gossypol carbinol and skellysolve B with fat from composite oil, recycling carbinol and skellysolve B, obtaining the immersed coarse oil.

Description

technical field

[0001] The invention relates to a method for producing dephenolized cotton protein, in particular to a method for producing dephenolized cotton protein by one-time leaching of cottonseed cold-pressed with a mixed solvent. Background technique

[0002] Gossypol is a poisonous substance. The cottonseed meal containing gossypol can only be used as low-grade feed or chemical fertilizer. The use of the material is relatively narrow. The content of cotton protein after dephenolization is about 50%. It can replace soybean meal as concentrated feed and has a wide range of uses. , because cottonseed contains toxic gossypol, if gossypol gossypol is produced, the content of gossypol must be reduced below the safety index, while the nutritional value of gossypol must be kept intact.

[0003] At present, there are two processes for industrialized production of dephenolized cotton protein: the second leaching method of shelled cotton blanks and the one-time leaching method...

Examples

Embodiment 1

[0043] As shown in the figure, the inventive method is as follows:

[0044] (1) Broken and peeled

[0045] Crush the cottonseed into broken pieces, and the powder degree is less than 7%, so as to ensure the next process of shelling is clean;

[0046] (2) kernel shell separation

[0047] The kernel-hull separation sieve, circular sieve and air sieve specific gravity combination separator are used to form a kernel-husk separation combination system.

[0048] (3) Low temperature cold pressing

[0049] Use a cold press with a cooling device to squeeze the oil, and obtain a cold-pressed cake with 15-20% oil at low temperature, so that 15-25% of the oil can be taken out;

[0050] (4) Mixed solvent leaching

[0051] The cold-pressed cake directly enters the shallow bed leaching device, and two solvents, n-hexane and methanol, are added according to the material-solvent ratio of 1:1.5, and the weight ratio of n-hexane and methanol is 6:2. The method of extracting gossypol to prod...

Embodiment 2

[0060] Method of the present invention is as follows:

[0061] (1) Broken and peeled

[0062] Crush the cottonseed into broken pieces, and the powder degree is less than 10%, so as to ensure the next process of shelling is clean;

[0063] (2) kernel shell separation

[0064] The kernel-hull separation sieve, circular sieve and air sieve specific gravity combination separator are used to form a kernel-husk separation combination system.

[0065] (3) Low temperature cold pressing

[0066] Use a cold press with a cooling device to squeeze the oil, and obtain a cold-pressed cake with 15% oil at low temperature, so that 15% of the oil can be taken out;

[0067] (4) Mixed solvent leaching

[0068] The cold-pressed cake directly enters the shallow bed extractor, and two solvents, n-hexane and methanol, are added according to the material-solvent ratio of 1:1.2, and the weight ratio of n-hexane and methanol is 4:2. The method of extracting gossypol to produce gossypol, in which n-h...

Embodiment 3

[0077] The inventive method is as follows:

[0078] (1) Broken and peeled

[0079] Crush the cottonseed into broken petals, and the powder degree is less than 9%, so as to ensure the next process of shelling is clean;

[0080] (2) kernel shell separation

[0081] The kernel-hull separation sieve, circular sieve and air sieve specific gravity combination separator are used to form a kernel-husk separation combination system.

[0082] (3) Low temperature cold pressing

[0083] Use a cold press with a cooling device to squeeze the oil, and obtain a cold-pressed cake with 16% oil at low temperature, so that 17% of the oil can be taken out;

[0084] (4) Mixed solvent leaching

[0085] The cold-pressed cake directly enters the shallow bed leaching device, and two solvents, n-hexane and methanol, are added according to the material-solvent ratio of 1:1.3, and the weight ratio of n-hexane and methanol is 5:2. The method of extracting gossypol to produce gossypol, wherein n-hexane...

technical field

[0001] The invention relates to a method for producing dephenolized cotton protein, in particular to a method for producing dephenolized cotton protein by one-time leaching of cottonseed cold-pressed with a mixed solvent. Background technique

[0002] Gossypol is a poisonous substance. The cottonseed meal containing gossypol can only be used as low-grade feed or chemical fertilizer. The use of the material is relatively narrow. The content of cotton protein after dephenolization is about 50%. It can replace soybean meal as concentrated feed and has a wide range of uses. , because cottonseed contains toxic gossypol, if gossypol gossypol is produced, the content of gossypol must be reduced below the safety index, while the nutritional value of gossypol must be kept intact.

[0003] At present, there are two processes for industrialized production of dephenolized cotton protein: the second leaching method of shelled cotton blanks and the one-time leaching method...

Examples

Embodiment 1

[0043] As shown in the figure, the inventive method is as follows:

[0044] (1) Broken and peeled

[0045] Crush the cottonseed into broken pieces, and the powder degree is less than 7%, so as to ensure the next process of shelling is clean;

[0046] (2) kernel shell separation

[0047] The kernel-hull separation sieve, circular sieve and air sieve specific gravity combination separator are used to form a kernel-husk separation combination system.

[0048] (3) Low temperature cold pressing

[0049] Use a cold press with a cooling device to squeeze the oil, and obtain a cold-pressed cake with 15-20% oil at low temperature, so that 15-25% of the oil can be taken out;

[0050] (4) Mixed solvent leaching

[0051] The cold-pressed cake directly enters the shallow bed leaching device, and two solvents, n-hexane and methanol, are added according to the material-solvent ratio of 1:1.5, and the weight ratio of n-hexane and methanol is 6:2. The method of extracting gossypol to prod...

Embodiment 2

[0060] Method of the present invention is as follows:

[0061] (1) Broken and peeled

[0062] Crush the cottonseed into broken pieces, and the powder degree is less than 10%, so as to ensure the next process of shelling is clean;

[0063] (2) kernel shell separation

[0064] The kernel-hull separation sieve, circular sieve and air sieve specific gravity combination separator are used to form a kernel-husk separation combination system.

[0065] (3) Low temperature cold pressing

[0066] Use a cold press with a cooling device to squeeze the oil, and obtain a cold-pressed cake with 15% oil at low temperature, so that 15% of the oil can be taken out;

[0067] (4) Mixed solvent leaching

[0068] The cold-pressed cake directly enters the shallow bed extractor, and two solvents, n-hexane and methanol, are added according to the material-solvent ratio of 1:1.2, and the weight ratio of n-hexane and methanol is 4:2. The method of extracting gossypol to produce gossypol, in which n-h...

Embodiment 3

[0077] The inventive method is as follows:

[0078] (1) Broken and peeled

[0079] Crush the cottonseed into broken petals, and the powder degree is less than 9%, so as to ensure the next process of shelling is clean;

[0080] (2) kernel shell separation

[0081] The kernel-hull separation sieve, circular sieve and air sieve specific gravity combination separator are used to form a kernel-husk separation combination system.

[0082] (3) Low temperature cold pressing

[0083] Use a cold press with a cooling device to squeeze the oil, and obtain a cold-pressed cake with 16% oil at low temperature, so that 17% of the oil can be taken out;

[0084] (4) Mixed solvent leaching

[0085] The cold-pressed cake directly enters the shallow bed leaching device, and two solvents, n-hexane and methanol, are added according to the material-solvent ratio of 1:1.3, and the weight ratio of n-hexane and methanol is 5:2. The method of extracting gossypol to produce gossypol, wherein n-hexane...

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