A kind of extraction method of phenolic substances in turmeric

Abstract

The invention discloses a method for extracting phenolic substances in turmeric. After the turmeric is pulverized into turmeric powder, it is infiltrated with 30wt%-60wt% ethanol solution, and then 80-100°C hot water is added for extraction. , filtered, and the obtained filter residue was extracted repeatedly once, and then the filtrate was combined, recovered under reduced pressure to remove the solvent, and then vacuum-dried to constant weight. The invention adopts an internal boiling method to extract curcuminoid phenolic substances in turmeric, which not only has the advantages of fast extraction speed and simple operation, but also has a high extraction rate and has good application prospects.

Description

technical field

[0001] The invention belongs to the technical field of extraction of traditional Chinese medicine components, and in particular relates to a method for extracting phenolic substances in turmeric. Background technique

[0002] Turmeric is the dry rhizome of Turmeric, a plant in the Zingiberaceae family. It has the effects of promoting qi and relieving pain, dysmenorrhea and breaking blood, dispelling wind and treating numbness, etc. Curcuminoids are a phenolic compound extracted from turmeric, which is also one of the main bioactive components of turmeric. Recent studies have shown that curcuminoids have anti-oxidation, anti-inflammation, scavenging free radicals, and inhibiting tumor growth, etc., and have great development prospects in health care products and medicines.

[0003] The internal boiling method is to use a small amount of organic solvent with low boiling point to wet the extracted material to fully desorb the active ingredients, and then add a ...

Examples

Embodiment 1

[0048] 1) Grind turmeric and pass through a 100-200 mesh sieve to obtain turmeric powder;

[0049] 2) Add 50wt% ethanol solution (containing 4wt% ether) to the obtained turmeric powder in an amount of 6mL / g, and infiltrate in a sealed container for 10-20 minutes;

[0050] 3) Add 40mL / g turmeric powder to the feed liquid obtained in step 1), add hot water at 90°C, extract for 2 minutes, then filter, and collect the filtrate and filter residue respectively;

[0051] 4) Repeat the extraction of the obtained filter residue once according to steps 2) and 3);

[0052] 5) The filtrate obtained from the two extractions was combined, recovered under reduced pressure to remove the solvent, and then vacuum-dried to constant weight; the yield of curcuminoids was 7.32%.

Embodiment 2

[0054] 1) Grind turmeric and pass through a 100-200 mesh sieve to obtain turmeric powder;

[0055] 2) Add 30wt% ethanol solution (containing 2wt% ether) to the obtained turmeric powder in an amount of 5mL / g, and infiltrate it in a sealed container for 10-20 minutes;

[0056] 3) Add 50mL / g turmeric powder to the feed liquid obtained in step 1) with hot water at 100°C, extract for 5 minutes, then filter, and collect the filtrate and filter residue respectively;

[0057] 4) Repeat the extraction of the obtained filter residue once according to steps 2) and 3);

[0058] 5) The filtrate obtained from the two extractions was combined, recovered under reduced pressure to remove the solvent, and then vacuum-dried to constant weight; the yield of curcuminoids was 7.59%.

Embodiment 3

[0060] 1) Grind turmeric and pass through a 100-200 mesh sieve to obtain turmeric powder;

[0061] 2) Add 40wt% ethanol solution (containing 1wt% ether) to the obtained turmeric powder in an amount of 8mL / g, and infiltrate in an airtight manner for 10~20min;

[0062] 3) Add 30mL / g turmeric powder to the feed solution obtained in step 1) with hot water at 80°C, extract for 3 minutes, then filter, and collect the filtrate and filter residue respectively;

[0063] 4) Repeat the extraction of the obtained filter residue once according to steps 2) and 3);

[0064] 5) The filtrate obtained from the two extractions was combined, recovered under reduced pressure to remove the solvent, and then vacuum-dried to constant weight; the yield of curcuminoids was 7.83%.

technical field

[0001] The invention belongs to the technical field of extraction of traditional Chinese medicine components, and in particular relates to a method for extracting phenolic substances in turmeric. Background technique

[0002] Turmeric is the dry rhizome of Turmeric, a plant in the Zingiberaceae family. It has the effects of promoting qi and relieving pain, dysmenorrhea and breaking blood, dispelling wind and treating numbness, etc. Curcuminoids are a phenolic compound extracted from turmeric, which is also one of the main bioactive components of turmeric. Recent studies have shown that curcuminoids have anti-oxidation, anti-inflammation, scavenging free radicals, and inhibiting tumor growth, etc., and have great development prospects in health care products and medicines.

[0003] The internal boiling method is to use a small amount of organic solvent with low boiling point to wet the extracted material to fully desorb the active ingredients, and then add a ...

Examples

Embodiment 1

[0048] 1) Grind turmeric and pass through a 100-200 mesh sieve to obtain turmeric powder;

[0049] 2) Add 50wt% ethanol solution (containing 4wt% ether) to the obtained turmeric powder in an amount of 6mL / g, and infiltrate in a sealed container for 10-20 minutes;

[0050] 3) Add 40mL / g turmeric powder to the feed liquid obtained in step 1), add hot water at 90°C, extract for 2 minutes, then filter, and collect the filtrate and filter residue respectively;

[0051] 4) Repeat the extraction of the obtained filter residue once according to steps 2) and 3);

[0052] 5) The filtrate obtained from the two extractions was combined, recovered under reduced pressure to remove the solvent, and then vacuum-dried to constant weight; the yield of curcuminoids was 7.32%.

Embodiment 2

[0054] 1) Grind turmeric and pass through a 100-200 mesh sieve to obtain turmeric powder;

[0055] 2) Add 30wt% ethanol solution (containing 2wt% ether) to the obtained turmeric powder in an amount of 5mL / g, and infiltrate it in a sealed container for 10-20 minutes;

[0056] 3) Add 50mL / g turmeric powder to the feed liquid obtained in step 1) with hot water at 100°C, extract for 5 minutes, then filter, and collect the filtrate and filter residue respectively;

[0057] 4) Repeat the extraction of the obtained filter residue once according to steps 2) and 3);

[0058] 5) The filtrate obtained from the two extractions was combined, recovered under reduced pressure to remove the solvent, and then vacuum-dried to constant weight; the yield of curcuminoids was 7.59%.

Embodiment 3

[0060] 1) Grind turmeric and pass through a 100-200 mesh sieve to obtain turmeric powder;

[0061] 2) Add 40wt% ethanol solution (containing 1wt% ether) to the obtained turmeric powder in an amount of 8mL / g, and infiltrate in an airtight manner for 10~20min;

[0062] 3) Add 30mL / g turmeric powder to the feed solution obtained in step 1) with hot water at 80°C, extract for 3 minutes, then filter, and collect the filtrate and filter residue respectively;

[0063] 4) Repeat the extraction of the obtained filter residue once according to steps 2) and 3);

[0064] 5) The filtrate obtained from the two extractions was combined, recovered under reduced pressure to remove the solvent, and then vacuum-dried to constant weight; the yield of curcuminoids was 7.83%.

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