Method for preparing easily atomized lutein feed for catfish
A lutein catfish and feed technology, applied in animal feed, animal feed, climate change adaptation, etc., can solve problems such as graying and blackening, waste of resources, difficulty in pure lutein, etc., to improve dark body color, improve The effect of utilization
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example 1
[0020] Take 1kg lettuce, peel and cut into 1cm 3 Put the small pieces of lettuce into a juicer to squeeze the juice, take 200mL of freshly squeezed lettuce juice and pour it into a 2L beaker, add 800mL of n-hexane, put it into an ultrasonic extractor for ultrasonic extraction for 20min, and obtain the extract; put the extract into a rotating Evaporator, rotary steamed at 40°C to form a viscous liquid, add potassium hydroxide solution with a mass concentration of 5% to the rotary steamed viscous liquid at a volume ratio of 5:3, put it in a water bath, and heat up to 45 ℃, saponify in water bath for 1 hour to obtain saponified product; put 10 g of saponified product into a 250 mL beaker, add 100 mL of distilled water, stir and dilute with a glass rod, adjust pH to 6 with 30% acetic acid solution, add 50 mL of ethyl acetate For extraction, put the extraction phase into a rotary evaporator, heat up to 80°C, remove ethyl acetate by rotary evaporation, and precipitate lutein powder ...
example 2
[0024] Take 1kg lettuce, peel and cut into 1cm 3Put the small pieces of lettuce into a juicer to squeeze the juice, take 250mL of freshly squeezed lettuce juice and pour it into a 2L beaker, add 1000mL of n-hexane, put it into an ultrasonic extractor for ultrasonic extraction for 25min, and obtain the extract; put the extract into a rotating Evaporator, rotary steamed at 45°C to form a viscous liquid, add potassium hydroxide solution with a mass concentration of 5% to the rotary steamed viscous liquid at a volume ratio of 5:3, put it in a water bath, and heat up to 50 Saponify in a water bath for 1 hour at ℃ to obtain saponified product; put 13g of saponified product into a 250mL beaker, add 150mL of distilled water, stir and dilute with a glass rod, adjust the pH to 6 with 30% acetic acid solution, add 80mL of ethyl acetate For extraction, put the extraction phase into a rotary evaporator, heat up to 85°C, remove ethyl acetate by rotary evaporation, and precipitate lutein pow...
example 3
[0028] Take 2kg lettuce, peel and cut into 2cm 3 Put the small pieces of lettuce into a juicer to squeeze the juice, take 300mL of freshly squeezed lettuce juice and pour it into a 2L beaker, add 1200mL of n-hexane, put it into an ultrasonic extractor for ultrasonic extraction for 30min, and obtain the extract; put the extract into a rotating Evaporator, rotary steamed at 50 ° C to form a viscous liquid, add potassium hydroxide solution with a mass concentration of 5% to the rotary steamed viscous liquid at a volume ratio of 5:3, put it in a water bath, and heat up to 55 ℃, saponify in water bath for 2 hours to obtain saponified product; put 15g of saponified product into a 250mL beaker, add 200mL of distilled water, stir and dilute with a glass rod, then use 30% acetic acid solution to adjust the pH to 7, add 100mL of ethyl acetate For extraction, put the extract phase into a rotary evaporator, heat up to 90°C, remove ethyl acetate by rotary evaporation, and precipitate lutei...
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