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Texto completo SciELO Brasil
Torres, Elizabeth Aparecida Ferraz da Silva
Texto completo
Id: biblio-1132175
Autor: Silva, Simone Alves da; Sampaio, Geni Rodrigues; Torres, Elizabeth Aparecida Ferraz da Silva.
Título: Phytosterols Content in Vegetable Oils of Brazil: Coconut, Safflower, Linseed and Evening Primrose
Fonte: Braz. arch. biol. technol;63:e20190216, 2020. tab, graf.
Idioma: en.
Projeto: São Paulo Research Foundation.
Resumo: Abstract In the last years phytosterols, natural components of plants, have received more attention due to association of their consumption with reducing risk of cardiovascular diseases and cancer. There are several scientific studies about phytosterols in vegetable oils, but they are scarce in unconventional oils. The objective of this research was evaluating the content of phytosterols (β-sitosterol, stigmasterol and campesterol) in vegetable oils sold in São Paulo city, in Brazil. The analysis included cold alkaline saponification, derivatization with hexamethyldisilazane and trimethylchlorosilane reagents, and quantification by gas chromatography using flame ionization detection and internal standardization. The quality control parameters indicated that the method was suitable for analysis. Total sterols were between 272.3 mg kg-1 (coconut oil) to 6169.7 mg kg-1 (evening primrose oil). β-sitosterol was the component found in higher concentrations and evening primrose oil was the most representative in quantity of phytosterols.
Descritores: Fitosteróis/análise
Óleos Vegetais/análise
Óleos Vegetais/classificação
Cromatografia Gasosa
Carthamus tinctorius
Óleo de Palmeira/análise
Responsável: BR1.1 - BIREME

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Texto completo SciELO Brasil
Texto completo
Id: biblio-886847
Título: Physiological response and productivity of safflower lines under water deficit and rehydration
Fonte: An. acad. bras. ciênc;89(4):3051-3066, Oct.-Dec. 2017. tab, graf.
Idioma: en.
Projeto: Conselho Nacional de Desenvolvimento Científico e Tecnológico.
Resumo: ABSTRACT Water deficit is one of the major stresses affecting plant growth and productivity worldwide. Plants induce various morphological, physiological, biochemical and molecular changes to adapt to the changing environment. Safflower (Carthamus tinctorius L.), a potential oil producer, is highly adaptable to various environmental conditions, such as lack of rainfall and temperatures. The objective of this work was to study the physiological and production characteristics of six safflower lines in response to water deficit followed by rehydration. The experiment was conducted in a protected environment and consisted of 30 days of water deficit followed by 18 days of rehydration. A differential response in terms of photosynthetic pigments, electrolyte leakage, water potential, relative water content, grain yield, oil content, oil yield and water use efficiency was observed in the six lines under water stress. Lines IMA 04, IMA 10, IMA 14 showed physiological characteristics of drought tolerance, with IMA 14 and IMA 16 being the most productive after water deficit. IMA 02 and IMA 21 lines displayed intermediate characteristics of drought tolerance. It was concluded that the lines responded differently to water deficit stress, showing considerable genetic variation and influence to the environment.
Descritores: Estresse Fisiológico/fisiologia
Carthamus tinctorius/fisiologia
Análise de Componente Principal
Carthamus tinctorius/crescimento & desenvolvimento
Carthamus tinctorius/metabolismo
Responsável: BR1.1 - BIREME

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