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99% L-Histidine 71-00-1 For Food Additives CAS NO.71-00-1
- Min.Order: 10 Gram
- Payment Terms: T/T,
- Product Details
Keywords
- 99% L-Histidine
- L-Histidine Manufacturer
- For Food Additives
Quick Details
- ProName: 99% L-Histidine 71-00-1 For Food Addit...
- CasNo: 71-00-1
- Molecular Formula: C6H9N3O2
- Appearance: White Powder
- Application: It Can Be Used As Pharmaceutical Inte...
- DeliveryTime: 2-4 days after confirming your payment...
- PackAge: 100g/ bag, 2 kg/ bag, 25kg/ carton or ...
- Port: Wuhan
- ProductionCapacity: 10000 Metric Ton/Month
- Purity: 99%
- Storage: Store in sealed containers at cool & d...
- Transportation: By DHL, TNT, FedEx, HKEMS, UPS, Etc
- LimitNum: 10 Gram
Superiority
Advantages:
Hubei XinRunde Chemical Co., Ltd is a renowned pharmaceutical manufacturer. We can offer high quality products at competitive price in quick delivery with 100% custom pass guaranteed. Never stop striving to offer our best service is our philosophy. We have Flexible and Untraceable payment terms. As a leading manufacture, our products have been exported to Germany, Norway, Poland, Finland, Spain, UK, France, Russia, USA, Brazil, Mexico, Australia, Japan, Korea, Thailand, Indonesia, Uruguay and many other countries.
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Details
| L-Histidine Basic information |
| Product Name: | L-Histidine |
| Synonyms: | (s)-1h-imidazole-4-alanin;(s)-1h-imidazole-4-propanoicaci;(s)-4-(2-amino-2-carboxyethyl)imidazole;(s)-alpha-amino-1h-imidazole-4-propanoicacid;1H-Imidazole-4-propanoic acid, alpha-amino-, (S)-;3-(1h-imidazol-4-yl)-l-alanin;4-(2-Amino-2-carboxyethyl)imidazole;alpha-amino-4(or5)-imidazolepropionicacid |
| CAS: | 71-00-1 |
| MF: | C6H9N3O2 |
| MW: | 155.15 |
| EINECS: | 200-745-3 |
| Product Categories: | Amino Acids;Histidine [His, H];Amino Acids and Derivatives;alpha-Amino Acids;Biochemistry;Nutritional Supplements;Amino Acids;amino |
| Mol File: | 71-00-1.mol |
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| L-Histidine Chemical Properties |
| Melting point | 282 °C (dec.)(lit.) |
| alpha | 12.4 º (c=11,6N HCl) |
| refractive index | 13 ° (C=11, 6mol/L HCl) |
| FEMA | 3694 | L-HISTIDINE |
| storage temp. | Store at RT. |
| solubility | H2O: 50 mg/mL |
| form | powder |
| pka | 1.8(at 25℃) |
| color | White to off-white or pale yellow |
| PH | 7.0-8.0 (25℃, 0.1M in H2O) |
| Water Solubility | 41.6 g/L (25 ºC) |
| Merck | 14,4720 |
| BRN | 4673585 |
| Stability: | Stable. Incompatible with strong oxidizing agents. |
| CAS DataBase Reference | 71-00-1(CAS DataBase Reference) |
| NIST Chemistry Reference | L-Histidine(71-00-1) |
| EPA Substance Registry System | L-Histidine(71-00-1) |
| Safety Information |
| Hazard Codes | Xn |
| Risk Statements | 22-36/37/38 |
| Safety Statements | 24/25-36/37-26-22 |
| WGK Germany | 2 |
| RTECS | MS3070000 |
| F | 10-23 |
| TSCA | Yes |
| HS Code | 29332990 |
| Hazardous Substances Data | 71-00-1(Hazardous Substances Data) |
| L-Histidine Usage And Synthesis |
| Chemical properties |
White crystalline or crystalline powder,odorless,slightly bitter taste. Melting and decomposition at about 277~288 ℃. The imidazole and metal ions are easy to form complex salt. Dissolve in water (4.3g/100ml, 25 ℃), very difficult to dissolve in ethanol, insoluble in ether. It is commonly used for its hydrochloride, because of minimal solubility and other reasons. |
| Uses |
(1) nutritional supplements. It is the very important components of Amino acid infusion and comprehensive amino acid preparations. It can be used in the treatment of gastric ulcer, anemia, allergies and so on. (2) It is used for biochemical research, medicine for the treatment of gastric ulcer, anemia, allergies and so on. (3) It is used as amino acid drugs. It is the main components of amino acid infusion and amino acid preparations, for the treatment of gastric ulcer, anemia and angina, aortitis, heart failure and other cardiovascular system disorders. Adverse reactions and contraindications: low toxicity, adult poisoning>64g/day, such as the injection of hydrochloric acid histidine with headache, flushing and heat. (4) It is used as a nutrient enhancer, the important component of amino acid infusion and amino acid preparations. It can be used for the treatment of gastric ulcer and biochemical researchment. (5) It is used for pharmaceutical raw materials and food additives. |
| Production methods |
(1) It is eatracted from pig blood, bovine blood. Pig blood is spraied drying and then obtained blood powder, 100kg pig blood have 18kg blood power. L-histidine is commonly used as its hydrochloride salt ([7048-02-4]). The L-histidine containing eluent was concentrated to the appearance of crystals, adjusted to pH 2.5 with hydrochloric acid, and immediately added with 2 times the amount of ethanol in the solution, standing, precipitating and filtering to obtain L-group ammonia Acid hydrochloride crude, after decolorization, recrystallization, drying in the finished product. L-histidine can also be extracted from hydrolysates of defatted soybeans. There are two main production methods. First one is direct fermentation, with carbon source of glucose and an inducible drug-resistant strain of corynebacterium glutamicum. Second one is protein hydrolysis. The hydrolysis method is described in detail below. Pig and cattle blood , pig hair or hoof were raw materials, hydrolyzed by acid , separated and purificated to get L-histidine. Hydrolysis:50kg of pig blood powder and 4 times amout of 6mol/L HCl were put into a hydrolysis tank and heated at 110-120 ℃ for 24 hours. Preparation of the dilution of the column: The hydrolysis solution of the previous step was concentrated under reduced pressure, distilled water was added again, and the acid was repeatedly distilled for 3-4 times until the distillate did not flow out of the hydrochloric acid. Concentrated solution diluted with distilled water to 500L,adjusted pH to 3.5-4 with concentrated ammonia, plused 20% of the amount of blood powder activated carbon, heated, decolorizated and stirred at 90 ℃ for 6h.Then filtered when it is hot, and take the filtrate standing overnight precipitate. Filtering again, the filtrate was diluted with distilled water to 2.5% (according to the blood powder dosage), and adjusted to pH 2.5 with concentrated HCl, which was column dilution. The column dilution was separated, washed with water and eluted. Column is Ф300mm×2000 mm, PVC material, packed with 001 × 7 (732) strong acidic styrene cation exchange resin 1730mm, flow rate 1L/ min, stopping to upper column until the outflow of L histidine. Washing with water 500L, flow rate 1.5L /min. The pH 7.0-10.0 fraction was collected. After the collection, the resin was recoated for 15 min, and then regenerated with twice the amount of 1.5-2 mol/L HCl, the flow rate was 5-13 L/min. After regeneration, Washing with water untill PH 4 or so, waiting for the next column. Purification: L-histidine acid eluent, removing ammonia with vacuum, concentrated to dry, and then dissolved with 40L distilled water, adjusted pH with 3-3.26 mol/L HCl, add 1kg activated carbon, heated and decolorizated at 90 ℃ for 30min.The filtrate was concentrated in a thin film evaporator and allowed to stand for 48 hours to precipitate crystals. The crystals were collected by filtration, washed with 95% ethanol and dried at 80 oC with vacuum for 4 hours to give L-histidine hydrochloride. (2) Dry flour and hydrochloric acid as raw material reflux for several hours, filtrated,washed and handled with activated carbon to get L-histidine monohydrochloride crude, then purified to obtain the pure product. (3) separated with ion exchange resin from the protein hydrolyzate of the basic amino acid. |
| Content analysis | Sample is accurately weighed about 105 rag, dried at 105 ℃ for 3h, then dissolved in 3ml formic acid and 50ml glacial acetic acid, and titrated with 0.1mol/L perchloric acid, and the end point was determined by potentiometric method. At the same time a blank test and the necessary amendments should be made. Per Ml0.1mol/L perchloric acid equates to 15.52mg L-histidine (C6H9N3O2). |
| Toxicity | It is safe for using in food products (FDA § 172.320, 2000). |
| Using limits |
Accounting for 2.4% of total protein in food (FDA § 172.320, 2000). FEMA: bakery products, meat products, dairy products, candy, frosting, are 150mg/kg. |
| Chemical Properties | White crystalline powder |
| Uses | L-Histidine is an essential amino acid for human development which the body cannot produce on its own. L-Histidine is one of the 22 proteinogenic amino acids. L-Histidine precursor to histamine (H4365 00) and a component of carnosine. |