Method for extraction of carrot pigment from carrots
A technology of carrot pigment and carrot, applied in chemical instruments and methods, azo dyes, organic dyes, etc., can solve problems such as high energy consumption, lower color scale, and unsatisfactory effects
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Embodiment 1
[0017] A method for extracting carotene from carrots, through the following process steps:
[0018] a. Raw material selection and processing: choose dark red carrots with tight texture and high pigment content as raw materials, and shred them after cleaning to obtain shredded carrots for subsequent use;
[0019] B, alcohol extraction Take 100kg of shredded carrot that step (a) obtains and place in extraction tank, add the ethanol solution that concentration is 55% as extraction agent, the addition is 1.2 times of shredded carrot quality, with 0.5mol / L hydrochloric acid to adjust the pH value to 4.8, control the temperature to 63°C, extract for 1.5 hours, and collect the pigment extract; continue to extract twice according to the above-mentioned process method; combine the pigment extract for three times;
[0020] c. Filtration The pigment extraction solution obtained in step (b) is filtered with a plate and frame filter press to remove impurities and obtain a pigment filtrate;...
Embodiment 2
[0027] A method for extracting carotene from carrots, through the following process steps:
[0028] a. Raw material selection and processing: choose dark red carrots with tight texture and high pigment content as raw materials, and shred them after cleaning to obtain shredded carrots for subsequent use;
[0029]b. Alcohol extraction Weigh 200 kg of carrot shreds obtained in step (a) and place in an extraction tank, add a concentration of 60% ethanol solution as an extraction agent, and the addition amount is 1 time of the carrot shreds quality, with 0.5mol / L hydrochloric acid to adjust the pH value to 4.5, control the temperature to 60°C, extract for 2 hours, and collect the pigment extract; continue to extract twice according to the above-mentioned process method; combine the pigment extract for three times;
[0030] c. Filtration The pigment extraction solution obtained in step (b) is filtered with a plate and frame filter press to remove impurities to obtain the pigment fil...
Embodiment 3
[0037] A method for extracting carotene from carrots, through the following process steps:
[0038] a. Raw material selection and processing: choose dark red carrots with tight texture and high pigment content as raw materials, and shred them after cleaning to obtain shredded carrots for subsequent use;
[0039] B, alcohol extraction 100kg of shredded carrots obtained in step (a) is placed in an extraction tank, adding a concentration of 50% ethanol solution as an extraction agent, the addition is 1.5 times the quality of shredded carrots, with 0.5mol / L Adjust the pH value to 5.0 with hydrochloric acid, control the temperature at 65°C, extract for 1 hour, and collect the pigment extract; continue to extract twice according to the above-mentioned process method; combine the pigment extract for three times;
[0040] c. Filtration The pigment extraction solution obtained in step (b) is filtered with a plate and frame filter press to remove impurities to obtain the pigment filtrat...
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