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CAS No. : | 20347-71-1 | MDL No. : | MFCD01662851 |
Formula : | C30H26O13 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | HGVVOUNEGQIPMS-UHFFFAOYSA-N |
M.W : | 594.52 | Pubchem ID : | 107876 |
Synonyms : |
Procyanidin;condensed tannins
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H319-H335 | Packing Group: | N/A |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
REFERENCE EXAMPLE 3: Method for purifying procyanidin B-2 (epicatechin-(4beta?8)-epicatechin) from an apple juice An apple juice (21,120 kg) was passed through a column (diameter: 60 cm, length: 88.5 cm, 250 l in volume) packed with Diaion HP-20 Resin (manufactured by Mitsubishi Chemical Industries, Ltd.) which had been equilibrated with water. Then, the column was washed with 1,000 l of a desalted water and 500 l of a 15% (V/V) aqueous methanol solution. Subsequently, the aimed product was eluted with 500 l of a 45% (V/V) aqueous methanol solution. The elude was solidified by drying and thus 9,450 g of a dry solid matter was obtained. This dry solid matter (1,465 g) was dissolved in a 25% (V/V) aqueous methanol solution and the solution was passed through a column (diameter: 18 cm, length: 39.3 cm, 10 l in volume) packed with Sephadex LH-20 (manufactured by Pharmacia) which had been equilibrated with a 25% (V/V) aqueous methanol solution. Next, the column was washed successively with 20 l of a 25% (V/V) aqueous methanol solution and 20 l of a 50% (V/V) aqueous methanol solution and then the aimed product was eluted with 20 l of a 75% (V/V) aqueous methanol solution. The elude was solidified by drying to give 233 g of a dry solid matter. This dry solid matter (116 g) was dissolved in a desalted water and separated by preparative high-performance liquid chromatography (150 mmPhi x 1000 mm: ODS column, methanol/a 0.0001% aqueous acetic acid solution = 12/88). Thus, 16.5 g of procyanidin B-2 (purity: 94% or more) was obtained. The 1H-NMR and 13C-NMR spectra and mass spectrum of the procyanidin B-2 thus obtained agreed with the spectra of a specimen. The purity of procyanidin B-2 was analyzed by HPLC under the same conditions as in Test Example 2. | ||
Reference Example 3 Method for Purifying Procyanidin B-2 (epicatechin-(4beta?8)-epicatechin) from an Apple Juice An apple juice (21,120 kg) was passed through a column (diameter: 60 cm, length: 88.5 cm, 250 1 in volume) packed with Diaion HP-20 Resin (manufactured by Mitsubishi Chemical Industries, Ltd.) which had been equilibrated with water. Then, the column was washed with 1,000 1 of a desalted water and 500 1 of a 15% (V/V) aqueous methanol solution. Subsequently, the aimed product was eluted with 500 1 of a 45% (V/V) aqueous methanol solution. The elude was solidified by drying and thus 9,450 g of a dry solid matter was obtained. This dry solid matter (1,465 g) was dissolved in a 25% (V/V) aqueous methanol solution and the solution was passed through a column (diameter: 18 cm, length: 39.3 cm, 10 1 in volume) packed with Sephadex LH-20 (manufactured by Pharmacia) which had been equilibrated with a 25% (V/V) aqueous methanol solution. Next, the column was washed successively with 20 1 of a 25% (V/V) aqueous methanol solution and 20 1 of a 50% (V/V) aqueous methanol solution and then the aimed product was eluted with 20 1 of a 75% (V/V) aqueous methanol solution. The elude was solidified by drying to give 233 g of a dry solid matter. This dry solid matter (116 g) was dissolved in a desalted water and separated by preparative high-performance liquid chromatography (150 mmPhi*1000 mm: ODS column, methanol/a 0.0001% aqueous acetic acid solution =12/88). Thus, 16.5 g of procyanidin B-2 (purity: 94% or more) was obtained. The 1H-NMR and 13C-NMR spectra and mass spectrum of the procyanidin B-2 thus obtained agreed with the spectra of a specimen. The purity of procyanidin B-2 was analyzed by HPLC under the same conditions as in Test Example 2. |
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