5,5',6,6'-Tetrahydroxy-3,3'-biindoIyl from Beetroot {Beta vulgaris) Peel Extract
نویسندگان
چکیده
Recently, plant material extracts containing phe nolic compounds have been screened as potential new sources of natural antioxidants. Beet extracts, especially the extracts from the peel, have shown strong antioxidant activity in these evaluations re sulting in increased attention to the natural pro ducts present in beetroot (Vinson et al., 1998; Kähkönen et al., 1999). As part of our ongoing investigation into the distribution and properties of known phenolics in red beetroot peel (Kähkönen et al., 1999; Kujala et al., 2000), a novel compound, 5,5',6,6'-tetrahydroxy-3,3'-biindolyl (1, Fig. 1), was isolated. It was shown to be a phenolic compound by a modified Folin-Ciocalteu phenol test (Nurmi et al., 1996) and was thus of prime interest to our work despite its highly unstable na ture when isolated.
منابع مشابه
5,5',6,6'-Tetrahydroxy-3,3'-biindolyl from beetroot (Beta vulgaris) peel extract.
A compound of unusual structure was isolated from red beetroot (Beta vulgaris) peel extract and identified as 5,5',6,6'-tetrahydroxy-3,3'-biindolyl based on the combination of NMR and MS studies.
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