Identification of carotenoid isomers in crude and bleached palm oils by mass spectrometry

Autor(es)

Ribeiro, Jose A. A. ^[1] ; Almeida, Erislene S. ^[2] ; Neto, Brenno A. D. ^[2] ; Abdelnur, Patricia V. ^{[1, 3]} ; Monteiro, Simone ^[2]

Afiliação do(s) autor(es)

^[1] EMBRAPA Agroenergia, Brasilia, DF - Brazil

^[2] Univ Brasilia, Inst Chem, Brasilia, DF - Brazil

^[3] Univ Fed Goias, Inst Chem, Goiania, Go - Brazil

• Tipo de documento: Artigo Científico
• Fonte: LWT-FOOD SCIENCE AND TECHNOLOGY; v. 89, p. 631-637, MAR 2018.
• Citações Web of Science: 1

Resumo

In this work, a method for identification of alpha- and beta-carotene isomers in palm oil samples was developed by UHPLC-MS/MS. The fragmentation patterns of both isomers were studied and a diagnostic ion was assigned to a carotene (m/z 388). The developed method was used to identify isomers in crude palm oils from two cultivars (E. guineensis, here so-called native oil and E. guineensis x E. oleifera, here so-called interspecific hybrid) and bleached oil with two types of commercial bleaching earths (neutral and acid activated). It was noticed that a and beta-isomers are present in both crude oils, nevertheless beta-carotene is the most abundant. The reduction of a and beta-isomers in the bleached native oil was very similar after treatment with the two different types of adsorbents. For the interspecific hybrid oil, the acid adsorbent provided a reduction of the two forms, while the neutral adsorbent reduced mostly the beta-form. (AU)

• Processo FAPESP: 14/21252-0 - Equilíbrio e processos de produção de biocombustíveis e bioprodutos
• Beneficiário: Antonio José de Almeida Meirelles
• Modalidade de apoio: Auxílio à Pesquisa - Temático