Method for extracting corn flavochrome by microwave-ultrasonic
A corn yellow pigment and ultrasonic technology, applied in the field of corn yellow pigment, can solve the problems of difficult industrial production, low pigment yield, long extraction time, etc., and achieve the effects of low toxicity, short extraction time, and easy industrialization
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[0010] Example 1:
[0011] Raw material: Corn gluten meal, a by-product of corn starch produced by wet process with a particle size of 0.19 mm.
[0012] 1. Preparation of extractant: take 90% ethanol and petroleum ether at 60°C to 90°C, mix them in a ratio of 1:1 (volume ratio), and prepare for later use.
[0013] 2. Microwave-ultrasonic extraction: Weigh 10 g of corn gluten meal and extractant at a material-to-liquid ratio of 1:6 (weight-volume ratio) and place them in a microwave-ultrasonic generator. Microwave power 600w, microwave treatment for 50s, then ultrasonic power is 300w, ultrasonic treatment for 30min, the temperature of the whole treatment process is controlled at 47 ° C; suction filtration and collection of the filtrate, the filtrate is evaporated under reduced pressure at 35 ± 5 ° C until there is no distillation The obtained orange-red paste was eluted with n-hexane, filtered to remove insoluble protein, vacuum dried at 40±5°C to constant weight, weighed the ...
Example Embodiment
[0014] Example 2:
[0015] Raw material: Corn gluten meal, a by-product of corn starch produced by wet process with a particle size of 0.25mm.
[0016] 1. Preparation of extractant: take 95% ethanol and petroleum ether with a fraction of 60°C to 90°C, mix them in a ratio of 1:1 (volume ratio), and prepare for later use.
[0017] 2. Microwave-ultrasonic extraction: Weigh 10 g of corn gluten meal and extractant and mix them at a material-to-liquid ratio of 1:13 (weight-volume ratio) and place them in a microwave-ultrasonic generator. The microwave power was 800w, and the microwave treatment was performed for 30s. Then, the ultrasonic power was 450w, and the ultrasonic treatment was performed for 20min. The temperature of the whole extraction process was controlled at 50°C. Finally, suction filtration and collect the filtrate, evaporate the filtrate under reduced pressure at 35±5°C until there is no distillate, the obtained orange-red paste is eluted with n-hexane, filtered to r...
Example Embodiment
[0018] Example 3:
[0019] Raw material: Corn gluten meal, a by-product of corn starch produced by wet process with a particle size of 0.36 mm.
[0020] 1. Preparation of extractant: take 99% ethanol and petroleum ether with a fraction of 60° C. to 90° C., mix them in a ratio of 1:1 (volume ratio), and prepare for later use.
[0021] 2. Microwave-ultrasonic extraction: Weigh 10 g of corn gluten meal and extractant and mix them at a material-to-liquid ratio of 1:15 (weight-volume ratio) and place them in a microwave-ultrasonic generator. The microwave power was 1000w, and the microwave treatment was performed for 20s. Then, the ultrasonic power was 600w, and the ultrasonic treatment was performed for 40min. The temperature of the whole extraction process was controlled at 52 °C. Finally, suction filtration and collect the filtrate, evaporate the filtrate under reduced pressure at 35±5°C until there is no distillate, the obtained orange-red paste is eluted with n-hexane, filter...
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