貨號(hào)：sigma C9750
規(guī)格：5G
產(chǎn)品說明：
β-胡蘿卜素 β-Carotene
別名：β,β-胡蘿卜素 維生素原 A
Related Categories Antioxidant and Free Radical Scavengers, Bioactive Small Molecules, Biochemicals Found in Plants - sorted by compound type, Biochemicals Found in Plants - sorted by plant name, C-CH,
Cancer Research, Carotenoid, Cell Biology, Chemopreventive Agents, Cofactor, Isoprenoid, Metabolic Pathways, Metabolites and Cofactors on the Metabolic Pathways Chart, Metabolomics, Nutrition Research, Theobroma cacao, Vitamin A, Vitamins
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biological source：synthetic 
type：Type I 
assay：≥93% （UV） 
form ：powder 
potency： ~1,600,000 units vitamin A per g 
color：dark red to brown 
solubility：hexane: soluble1.1 mg/mL 
包裝：
Packaged in serum vials.
Biochem/physiol Actions
維生素原 A，即 β-胡蘿卜素能分類作為抗氧化劑的zui重要的原因就是它可以在體外抑制自由基引發(fā)的過氧化。然而，它在體內(nèi)究竟表現(xiàn)為抗氧化劑或是促氧化劑卻取決于細(xì)胞環(huán)境。它可以降低許多癌癥的發(fā)病率，卻會(huì)增加吸煙者患肺癌的幾率。