alpha-胡萝卜素
Carotene
CAS: 7488-99-5
Molecular Formula: C40H56
alpha-胡萝卜素 - Names and Identifiers
| Name | Carotene |
| Synonyms | Carotene A-CAROTENE CAROTENE, A- ALPHA-CAROTENE (6R)-beta,epsilon-carotene ALPHA-CAROTENE FROM CARROTS |
| CAS | 7488-99-5 |
| EINECS | 200-838-9 |
alpha-胡萝卜素 - Physico-chemical Properties
| Molecular Formula | C40H56 |
| Molar Mass | 536.882 |
| Density | 0.9380 (estimate) |
| Melting Point | 187.50° (evacuated tube) |
| Boling Point | 644.94°C (rough estimate) |
| Specific Rotation(α) | +385 (C6H6) |
| Solubility | Insoluble in water, slightly soluble in ethanol, easily soluble in petroleum ether and other organic solvents |
| Appearance | morphology neat |
| Storage Condition | -20°C |
| Refractive Index | 1.5630 (estimate) |
| MDL | MFCD00136012 |
alpha-胡萝卜素 - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R40 - Limited evidence of a carcinogenic effect R67 - Vapors may cause drowsiness and dizziness R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S36/37 - Wear suitable protective clothing and gloves. S24/25 - Avoid contact with skin and eyes. S23 - Do not breathe vapour. |
| UN IDs | UN 1593 6.1/PG 3 |
| WGK Germany | 3 |
| HS Code | 32041990 |
alpha-胡萝卜素 - Upstream Downstream Industry
| Raw Materials | β,β-Carotene, 5,8-epoxy-5,8-dihydro- 15,15'-didehydro-12'-apo-beta,psi-carotenal alpha-Ionone Iodine |
alpha-胡萝卜素 - Reference
| Reference Show more | 1. Li Xiaoli, Liang Yuanxue, Yu Lingchao, etc. Changes of carotenoid content in oil palm fruit at different developmental stages [J]. Journal of Huazhong Agricultural University, 2015, 34(1):23-27. 2. Yu Feng, Sun Zhi-Gao, Fang Ming, et al. Effect of sterilization on carotenoids and color of citrus juice [J]. Journal of Food and Fermentation Industry, 238, 45(07):225-232. 3. Wang, YH., li, T., zhang, RR. et al. Male three tree carrot cultivars with variable taproot colors. Protoplasma 257, 949-963 (2020). https://doi.org/10.1007/s00709-020-01482-4 4. [IF=4.539] Xueliang Liu et al."Polyvinylpyrrolidone-stabilized Pt nanoclusters as robust oxidase mimics for selective detection of ascorbic acid."Colloid Surface A. 2021 Sep;625:126985 5. [IF=4.379] Song Hongxia et al."The genes crucial to carotenoid metabolism under elevated CO2 levels in carrot (Daucus carota L.)."Sci Rep-Uk. 2021 Jun;11(1):1-13 6. [IF=3.356] Wang Ya-Hui et al."Transcript profiling of genes involved in carotenoid biosynthesis among three carrot cultivars with various taproot colors."Protoplasma. 2020 May;257(3):949-963 |
alpha-胡萝卜素 - Uses and synthesis methods
introduction
α-carotene (Alpha-carotene) is a member of the carotenoid family and is one of the most abundant carotenoids in a healthy diet. The body can convert alpha-and beta-carotene into vitamin A needed to maintain healthy skin and bones, good eyesight and a strong immune system. Since the body converts α-carotene into vitamin A, α-carotene is called the precursor form of vitamin A. However, as a vitamin A precursor, α-carotene is only half as effective as β-carotene, which is another well-known carotenoid. But on the other hand, as an antioxidant, α-carotene is more potent than β-carotene.
function
Antioxidants are enzymes that prevent free radicals from decomposing or oxidizing cells. Powerful antioxidants such as alpha-carotene can wipe out free radicals before they damage the body and cause chronic diseases such as heart disease and cancer. In addition, α-carotene also plays a role in preventing cancer by stimulating cell-to-cell communication, which is a process needed to ensure proper cell division.
food sources
α-carotene contains flavonoids, which are antioxidants that provide color and fragrance to many orange or red fruits and vegetables. Vegetables and fruits such as carrots, sweet potatoes, pumpkin, broccoli, cabbage, cantaloupe, spinach, mango, kiwi fruit and pumpkin are the best sources of α-carotene.
efficacy
carrot has the effects of relieving asthma, removing phlegm, promoting digestion and swelling. Experiments have proved that the ability of α-carotene to inhibit tumor cells is 10 times that of β-carotene, and it has a strong effect on preventing abnormal changes in DNA (deoxyribonucleic acid). As early as more than ten years ago, studies found that the higher the concentration of α-carotene in the blood, the lower the risk of heart disease in the subjects. According to a 14-year follow-up survey conducted by researchers from the US Centers for Disease Control and Prevention, people with higher blood alpha-carotene content have longer lives.
synthesis method
A method for preparing α-carotene, which comprises: under the protection of nitrogen, in an organic solvent, in the presence of a base, 3-methyl -5-(2,6, 6-trimethyl-2-cyclohexene-1-yl)-1, 4-pentadienyl phosphonic acid diethyl ester is rearranged at -30-30°C; then, to the mixture after the rearrangement reaction of step (I), decaparbaldehyde is added to carry out a Wittig-Horner condensation reaction at a temperature of 0-30°C to obtain α-carotene.
production method
1. The best sources of α-carotene and β-carotene are carrots, palm oil and various green leaves.
Last Update：2024-04-09 21:01:54
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Raw Materials for alpha-胡萝卜素