title: Isolation of β-Cryptoxanthin-epoxides, Precursors of Cryptocapsin and 3'-Deoxycapsanthin, from Red Mamey (Pouteria sapota).
abstract: From an extract of red mamey (Pouteria sapota) β-cryptoxanthin-5,6-epoxide, β-cryptoxanthin-5',6'-epoxide, 3'-deoxycapsanthin, and cryptocapsin were isolated and characterized by UV-vis spectroscopy, electronic circular dichroism (ECD), nuclear magnetic resonance (NMR) spectroscopy, and mass spectrometry (MS). Epoxidation of β-cryptoxanthin delivered the β-(5'R,6'S)- and (5'S,6'R)-cryptoxanthin-5',6'-epoxides, which were identified by HPLC-ECD analysis. These carotenoids among others are quite common in the fruits of Central America, and as they are natural provitamins A, they should play an important role in the diet of the mostly vitamin A deficient population of this region.
authors.affiliation: †Department of Biochemistry and Medical Chemistry, Medical School, University of Pécs, Szigeti út 12, 7624 Pécs, Hungary.
authors.forename: Erika
authors.initials: E
authors.lastname: Turcsi
authors.affiliation: ‡Department of Biochemistry, Faculty of Exact Natural Sciences and Technology, University of Panamá, 074637 Panamá City, Panamá
authors.forename: Enrique
authors.initials: E
authors.lastname: Murillo
authors.affiliation: §Department of Organic Chemistry, Faculty of Sciences, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary.
authors.forename: Tibor
authors.initials: T
authors.lastname: Kurtán
authors.affiliation: §Department of Organic Chemistry, Faculty of Sciences, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary.
authors.forename: Ádám
authors.initials: Á
authors.lastname: Szappanos
authors.affiliation: §Department of Organic Chemistry, Faculty of Sciences, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary.
authors.forename: Tünde-Zita
authors.initials: TZ
authors.lastname: Illyés
authors.affiliation: #Department of Pharmacognosy, Medical School, University of Pécs, Rókus utca 2, 7624 Pécs, Hungary.
authors.forename: Gergely
authors.initials: G
authors.lastname: Gulyás-Fekete
authors.affiliation: †Department of Biochemistry and Medical Chemistry, Medical School, University of Pécs, Szigeti út 12, 7624 Pécs, Hungary.
authors.forename: Attila
authors.initials: A
authors.lastname: Agócs
authors.affiliation: †Department of Biochemistry and Medical Chemistry, Medical School, University of Pécs, Szigeti út 12, 7624 Pécs, Hungary.
authors.forename: Péter
authors.initials: P
authors.lastname: Avar
authors.affiliation: †Department of Biochemistry and Medical Chemistry, Medical School, University of Pécs, Szigeti út 12, 7624 Pécs, Hungary.|#Department of Pharmacognosy, Medical School, University of Pécs, Rókus utca 2, 7624 Pécs, Hungary.
authors.forename: József
authors.initials: J
authors.lastname: Deli
mesh_terms: D002211:Capsaicin / Q000737:chemistry* / Q000302:isolation & purification; D002338:Carotenoids / Q000737:chemistry* / Q000302:isolation & purification; D002942:Circular Dichroism; D065366:Cryptoxanthins / Q000737:chemistry* / Q000302:isolation & purification; D004852:Epoxy Compounds / Q000737:chemistry* / Q000302:isolation & purification; D005638:Fruit / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification; D032132:Pouteria / Q000737:chemistry*
chemical_list: C555381:3'-deoxycapsanthin; D065366:Cryptoxanthins; D004852:Epoxy Compounds; D010936:Plant Extracts; D002338:Carotenoids; D002211:Capsaicin
keywords: HPLC-ECD analysis; carotenoids; mamey; tropical fruit