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Trabajos de Investigación
Determinação de folatos em espinafre – avaliação da influência do tipo de cultivo, época de colheita e cozimento
Juliana Azevedo Lima-Pallone, Rodrigo Ramos Catharino, Helena Teixeira Godoy
Centro de Ciências Exatas, Ambientais e de Tecnologias, Faculdade de Química, Pontifícia Universidade Católica de Campinas. Brasil, UNICAMP, Faculdade de Engenharia de Alimentos, Departamento de Ciência de Alimentos, Campinas, SP, Brasil
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SUMMARY
Folate determination in spinach. Influence of cultivation, harvest and cooking methods.
The aim of this work was to determine vitamin contents in spinach produced by different cultivation type (organic and traditional), harvesting period and after cooking in water. The determination was carried out by High Performance Liquid Chromatography. There was no significant difference in folate contents between spinach cultivated by traditional and organic method and there was also no significant difference between the values obtained at different periods of the year. Folate levels determined as 5-methylTHF and 5-formylTHF varied from 226 to 527 µg/100g and 4.6 to 10 µg/100g, respectively. Cooking in water resulted in approximately 74% of losses of 5-methylTHF and 56% of 5-formylTHF. The mainly losses occurred by leaching.
Key words: Folates, spinach, type of cultivation, cooking, harvesting period, analytical methods.
Recibido: 15/08/2007
Aceptado: 22/11/2007
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PRIVACIDAD | ACCESIBILIDAD
ALAN-VE ISSN 0004-0622 - Depósito Legal: pp 199602DF83
Sociedad Latinoamericana de Nutrición
Producción editorial en Venezuela: Capítulo Venezolano - RIF: J-30843129-0
Urbanización Santa María, primera transversal, No. 417-214, Planta Alta
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