Extraction and purification method of purple potato anthocyanin
A purification method, purple potato technology, applied in the direction of organic chemistry, can solve the problems of low purity and inability to meet the wide application of anthocyanins, and achieve the effect of high product purity
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Embodiment 1
[0039] A method for extracting and purifying purple potato anthocyanins, comprising the following steps:
[0040] (1) 500g of fresh and non-rotten purple potatoes are washed with pure water, and cut into pieces to obtain processed purple potatoes;
[0041] After the processed purple potato is mixed with 1000g mass concentration of 1.5% citric acid aqueous solution, it is beaten through beating and filtered through a 80-mesh sieve, and the filter residue is mixed with 1000g mass concentration of 1.5% citric acid aqueous solution. Sieve filtration, merge the filtrate of secondary filtration;
[0042] Centrifuge the filtrate obtained above at 5000r / m for 5 minutes, take the supernatant, wash the precipitate twice, combine the supernatant and the washing liquid to obtain the potato anthocyanin extract, and dry the precipitate at 80°C to produce get potato starch;
[0043] The above washing steps are as follows: add 200 ml of citric acid aqueous solution with a mass concentration...
Embodiment 2
[0051] A method for extracting and purifying purple potato anthocyanins, comprising the following steps:
[0052] (1) 500g of fresh and non-rotten purple potatoes are washed with pure water, and cut into pieces to obtain processed purple potatoes;
[0053] After the processed purple potato is mixed with 1000g mass concentration of 1% citric acid aqueous solution, it is beaten through beating and filtered through a 80-mesh sieve, and the filter residue is mixed with 1000g mass concentration of 1% citric acid aqueous solution, beaten, and filtered through an 80-mesh sieve. Sieve filtration, merge the filtrate of secondary filtration;
[0054] Centrifuge the filtrate obtained above at 5000r / m for 5 minutes, take the supernatant, wash the precipitate once, combine the supernatant and washing liquid to obtain the potato anthocyanin extract, and dry the precipitate at 80°C to produce get potato starch;
[0055] The above washing steps are as follows: add 200 ml of citric acid aque...
Embodiment 3
[0063] A method for extracting and purifying purple potato anthocyanins, comprising the following steps:
[0064] (1) 500g of fresh and non-rotten purple potatoes are washed with pure water, and cut into pieces to obtain processed purple potatoes;
[0065] After the processed purple potato is mixed with 1000g mass concentration of 2% citric acid aqueous solution, it is beaten through beating and filtered through a 80-mesh sieve, and the filter residue is mixed with 1000g mass concentration of 2% citric acid aqueous solution, beaten, and filtered through 80 mesh Sieve filtration, merge the filtrate of secondary filtration;
[0066] The filtrate obtained above was centrifuged at 5000r / m for 5 minutes, the supernatant was taken, and the precipitate was washed 3 times. get potato starch;
[0067] The above washing steps are as follows: add 200 ml of citric acid aqueous solution with a mass concentration of 2% to the precipitate, mix well, and centrifuge at 5000 r / m for 5 minutes...
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