Statistical differentiation of bananas according to their mineral composition.
The concentrations of Na, K, Ca, Mg, Fe, Cu, Zn, and Mn were determined in banana cultivars Gran enana and Pequeña enana cultivated in Tenerife and in cv. Gran enana bananas from Ecuador. The mineral concentrations in the bananas from Tenerife and from Ecuador were clearly different. The cultivar did not influence the mineral concentrations except in the case of Fe. Variations according to cultivation method (greenhouse and outdoors) and farming style (conventional and organic) in the mineral concentrations in the bananas from Tenerife were observed. The mineral concentrations in the internal part of the banana were higher than those in the middle and external parts. Representation of double log correlations K-Mg and Zn-Mn tended to separate the banana samples according to origin. Applying factor and cluster analysis, the bananas from Ecuador were well separated from the bananas produced in Tenerife, and therefore, these are useful tools for differentiating the origin of bananas.
The Mineral Content of Mexican Fruits and Vegetables
As part of the development of new food composition tables for Mexico, a number of fruit and vegetable samples, grown in Mexico, were purchased fresh from the main market in Mexico City. After washing and drying to remove contaminants, the samples were freeze dried and analyzed for the major elements (Na, K, Ca, P, Mg, Fe) by flame photometric and spectrophotometric procedures and for the minor and trace elements (Cu, Zn, Mn, Co, Cr, Cd, Pb) by atomic absorption spectrophotometry. The results are compared with those from the United Kingdom and German food composition tables. In general there were no consistent differences between the European and Mexican data, though the P content of Mexican fruits tended to be lower. There were noticeably higher Pb levels in Mexican fruits than those of United Kingdom origin, while root and green vegetables showed similar Pb levels.
Encuesta de alimentacion y valoracion nutricional de la comunidad canaria
SE REALIZO UNA ENCUESTA DE ALIMENTACION FAMILIAR POR EL METODO DE LA LISTA DE ALIMENTOS SOBRE UNA RELACION CERRADA DE FRECUENCIA Y CANTIDADES CONSUMIDAS A TRAVES DEL INTERROGATORIO DE LA PERSONA RESPONSABLE DE LA COMPRA DE ALIMENTOS Y DE LA ELABORACION DE LOS MENUS FAMILIARES GENERALMENTE EL AMA DE CASA. SE REALIZARON 2.025 ENCUESTAS EN TODA CANARIAS. LOS OBJETIVOS PROPUESTOS Y ALCANZADOS FUNDAMENTALES FUERON: 1 AVERIGUAR QUE COMEN EN CANTIDAD Y CALIDAD LAS FAMILIAS DE LA POBLACION CANARIA. 2 VALIDAR UN MODELO DE ENCUESTA UNA METODOLOGIA DE MUESTREO Y DE EXPLOTACION TODO ELLO DE ELABORACION PROPIA EN LA REALIZACION DE INVESTIGACIONES NUTRICIONALES. 3 CALCULAR LA INGESTA DE ENERGIA Y NUTRIENTES Y VALORAR EL ESTADO NUTRICIONAL DEL INDIVIDUO MEDIO REPRESENTATIVO DE NUESTRA COMUNIDAD AUTONOMA DE CADA PROVINCIA ISLA Y COMARCA Y DE LOS DIVERSOS SUBGRUPOS DE POBLACION SOCIALES ECONOMICOS Y CULTURALES. 4 SENTAR LAS BASES PARA LA PROGRAMACION DE PREVENCION O CORRECCION DE LOS PROBLEMAS NUTRICIONALES Y PARA COLABORAR EN LA EDUCACION EN ALIMENTACION. CALCULADAS LAS RECOMENDACIONES DIETETICAS PARA EL CANARIO MEDIO SE OBSERVA QUE LAS INGESTAS EN ENERGIA Y CASI TODOS LOS NUTRIENTES SUPERAN CON CRECES AQUELLAS.LOS PROBLEMAS ALIMENTARIOS SON LOS COMUNES DE LAS COMUNIDADES DESARROLLADAS.