D-glucose pentakis[3,4-dihydroxy-5-[(trihydroxy-3,4,5-benzoyl)oxy]benzoate]
D-glucose pentakis[3,4-dihydroxy-5-[(trihydroxy-3,4,5-benzoyl)oxy]benzoate]
CAS: 72401-53-7
Molecular Formula: C76H52O46
D-glucose pentakis[3,4-dihydroxy-5-[(trihydroxy-3,4,5-benzoyl)oxy]benzoate] - Names and Identifiers
| Name | D-glucose pentakis[3,4-dihydroxy-5-[(trihydroxy-3,4,5-benzoyl)oxy]benzoate] |
| Synonyms | D-glucose pentakis[3,4-dihydroxy-5-[(trihydroxy-3,4,5-benzoyl)oxy]benzoate] |
| CAS | 72401-53-7 |
| EINECS | 276-638-0 |
D-glucose pentakis[3,4-dihydroxy-5-[(trihydroxy-3,4,5-benzoyl)oxy]benzoate] - Physico-chemical Properties
| Molecular Formula | C76H52O46 |
| Molar Mass | 1701.2 |
| Density | 2.12±0.1 g/cm3(Predicted) |
| pKa | 6.00±0.50(Predicted) |
| Physical and Chemical Properties | Amorphous powder with yellowish white to light brown, or flaky, sponge-like lumps. There is a special smell. The taste is astringent and has convergence. General commodities contain about 10% water. It will gradually oxidize into brown in air and light, and decomposes into pyrogallol and carbon dioxide gas when heated to 210~215 ℃. Protein, starch, gelatin, most alkaloids and metal sodium salts can be precipitated. When trivalent iron salts are found, they are black pigments and precipitated. Soluble in water (300%), hot glycerin (1:1), ethanol, acetone, etc., almost insoluble in benzene, chloroform, ether and hexane solvents, insoluble in absolute ethanol. The aqueous solution is acidic. Natural products are widely found in the roots, skins, rods, leaves and fruits of plants. |
D-glucose pentakis[3,4-dihydroxy-5-[(trihydroxy-3,4,5-benzoyl)oxy]benzoate] - References
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| identification test | take 10% sample aqueous solution and add a small amount of ferric chloride test solution (TS-101), which should be blue-black or precipitated. Adding human albumin or gelatin solution to tannic acid solution should be precipitated. Solubility soluble in water, acetone and ethanol, insoluble in benzene, chloroform and ether, 1g soluble in 1ml of warm glycerin (OT-42). Gallic acid (after hydrolysis) was directly identified by thin layer chromatography (GT-10). The sample solution was prepared in 100ml of 1:1000 sample solution, 20mg of tannase was added and kept at 37 ℃ for 2 hours. Preparation of standard samples 1:1000 gallic acid aqueous solution. The expanded solvent is prepared by chloroform + ethyl formate + formic acid -5:4:1 (volume meter). The spray consists of ferric chloride (FeCl.) 1 part of 50% ethanol solution (1:100) and potassium ferrocyanide [K3Fe(CN).] 50% ethanol solution (1:100) is mixed with 1 part. Adsorbent silica gel. The sample size of the operating sample and the standard sample is 10 μd. When the solvent rises to about 15cm, stop unfolding and spray with spray. The RJ value of the specimen should be consistent with the standard sample. |
| content analysis | sample test accurately weigh about 2.0g of sample, move a 500ml volumetric flask, add water to dissolve and fix the volume. Take 100ml of the liquid and move it to a 300ml flask, and add Hide Powder (pure skin powder, available from L H.Kincoln & Son,Inc. Obtained, address: Coudersport,Pennsylvania,16915,USA)7.2g. Shake for 20min, let stand for 10min, and filter by Gt filter. The filtrate must be clarified. Absorb 50ml of the filtrate and move into a weighed crystal dish. Evaporate in a steam bath to dryness, then dry in an oven at 105 ℃ for 1h, cool in a dryer and weigh, with weight difference (g) as a. The blank test weighs Hide Powder7.2 g, moves it into a flask containing 300ml of water, and then operates according to the above sample test procedure, and the obtained weight difference (g) is taken as B. Calculate tannic acid (%)=[(A-B)× 1000]/W where w-sample amount (on a dry basis),g. |
| toxicity | ADI value is not specified (FAO/WHO,2001). GRAS(FDA,§ 184.1097,2000). LD50 2260mg/kg (rat, oral). |
| usage limit | $GB 2760-96: low alcohol wine, fruit wine, GMP. GB 2760-96: Processing aids. FDA, 184.1097(2000): Baked products 0.01%; Alcohol-containing beverage 0.015%; Alcohol-free beverage 0.005%; Frozen dairy dessert 0.04%; Hard candy 0.013%; Meat products 0.001%; All used as flavoring agents. FEMA(mg/kg): soft drink 1.1~4.5; Cold drink 160; Candy 0.20~100; Baked food 40; Alcohol-containing beverage 6.0~1000. |
| use | clarifier (used to remove suspended substances such as protein in turbid state such as sake and beer, etc., can solve abiotic stability such as beer, and can reduce acetaldehyde content and prolong the shelf life of wine); astringent; crude oil deodorant; fragrance aid. as a protein adsorbent, China's regulations can be used for fruit wine and low alcohol wine, according to the production needs of appropriate use. |
| production method | tannins are found in the skins and fruits of various trees, usually using gallnut as raw material and extracted with water or ethanol. Breaking the air-dried gallnut to 0.5~1.0cm, sieving off the insect powder, and leaching with 4 times water at 40~60 ℃ for 18h. The reverse cycle method was used to extract 4 times to make the final extract reach the relative density 1.06. The leaching solution was decolorized with 5% activated carbon at 50~60 ℃ for 4 hours, filtered while hot, and the filter residue was washed with water for 4 times. The filtrate and lotion were combined, concentrated under reduced pressure at 60°C, and dried to obtain powder. The yield is 50% ~ 70%. Natural tannins are fixed on insoluble carriers to make solidified tannins. Galla Chinensis is used as raw material, extracted with ethanol or ethyl acetate or ethanol-ether extraction, refined by chromatography and the like to remove pigment and resin, then concentrated in vacuum and dried to form a powder with an yield of about 50% ~ 70%. It is called "Tannin of Kaki", which is obtained by repeatedly adding a small amount of water to squeeze raw persimmons. It is a light yellow liquid of 5.4~7.9, containing tannin 4.7~6.3%, sugar about 2.4%, and the pH value of the liquid is 3.2~3.9. |
Last Update：2024-04-09 21:04:16
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