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<abstract language="eng">This paper reports on the development of a simple and fast procedure for &#946;-carotene extraction from carrots and its quantification by UV/Vis spectroscopy. Carotenoids extracted from carrots may also be used as alternative reagents for TLC (thin layer chromatography) detection of natural compounds with antioxidant properties, replacing the commercial p.a. grade &#946;-carotene. Although this reagent had around 10% b-carotene, it proved to be as efficient for TLC analysis as the commercial p.a. grade &#946;-carotene. This practice is a useful alternative for teaching undergraduate organic chemistry laboratory classes

Extração de β-caroteno de cenouras: uma proposta para disciplinas experimentais de química