Method for extracting salvia chinensis anthocyanin
An extraction method and technology of purple ginseng potato, applied in chemical instruments and methods, food science, azo dyes, etc., can solve the problems of difficult separation, lack of detail, low product purity, etc., to ensure natural characteristics, ensure safety, Guaranteed effect of purity
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Embodiment 1
[0029] (1) Raw material pretreatment: Weigh 100g of fresh, non-rotten and non-browning purple ginseng potato tubers, wash, peel, mechanically mash to pulp, and set aside;
[0030] (2) Enzymatic hydrolysis treatment: mix the slurry raw material in step (1) with α-amylase and water in a ratio of 100g by weight and volume: 0.06g: 400ml in a 1000ml beaker, adjust the pH of the mixture to 6.0 with citric acid, Perform enzymatic hydrolysis treatment for 30 minutes in a water bath at 40°C;
[0031] (3) Extraction of ginseng and potato anthocyanins: Add step (2) 400ml of dehydrated alcohol with 1 times the volume of water to the above-mentioned enzymatic hydrolysis mixture and mix evenly, so that the ethanol concentration in the whole extraction mixture reaches 50%. After adjusting the pH to 3.0, extract in a water bath at 50°C for 30 minutes, and collect the extraction mixture after the end;
[0032] (4) Separation and concentration of the extraction mixture: centrifuge the above ex...
Embodiment 2
[0036] In this example, step (2) enzymatic hydrolysis treatment: slurry raw material and α-amylase and water are mixed in the ratio of 100g by weight volume: 0.1g: 400ml in the beaker of 2000ml, adjust mixture pH to 6.5 with citric acid, in Carry out enzyme hydrolysis treatment 40min under 50 ℃ of water baths; Step (3) extraction of ginseng potato anthocyanins: add step (2) to the enzymatic hydrolysis mixture 1000ml of dehydrated alcohol 2.5 times of water volume, make the ethanol concentration in the whole extraction mixture reach 71%, adjust the pH to 4.0 with citric acid, and extract in a water bath at 60° C. for 50 minutes; step (4) separation and concentration of the extraction mixture: the extraction mixture is centrifuged at 8000 r / min for 10 minutes to implement solid-liquid separation; The clear liquid was concentrated under reduced pressure at a temperature of 60°C and a vacuum of 0.09Mpa to 1 / 30 of the original volume; step (5) elution, purification and drying of the...
Embodiment 3
[0038] In this example, step (2) enzymatic hydrolysis treatment: slurry raw material and α-amylase and water are mixed in the ratio of 100g by weight volume: 0.08g: 400ml in the beaker of 2000ml, adjust mixture pH to 6.2 with citric acid, in Under 45 ℃ of water baths, carry out enzymatic hydrolysis treatment 35min; Step (3) extraction of ginseng potato anthocyanins: add step (2) to the enzymatic hydrolysis mixture 720ml of dehydrated alcohol 1.8 times of water volume, make the ethanol concentration in the whole extraction mixture reach 64%, adjust the pH to 3.5 with citric acid, and extract in a water bath at 55° C. for 40 minutes; step (4) separation and concentration of the extraction mixture: the extraction mixture is centrifuged at 6000 r / min for 10 minutes to implement solid-liquid separation; The clear liquid is concentrated under reduced pressure at a temperature of 55°C and a vacuum of 0.07Mpa to 1 / 20 of the original volume; step (5) elution, purification and drying of ...
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