Análisis de algunos aspectos físicos, químicos y microbiológicos de las muestras de miel producidas y consumidas en Turquía

Analysis of honey produced in the western part of Turkey was carried out in this study. Fifty honey samples, collected from the local market in this region were analyzed for their physicochemical parameters including hydroxymethylfurfural (HMF), electrical conductivity, sucrose, free acidity, moisture and water insoluble impurities, in addition to pathogenic microorganisms present. HMF amounts determined in 47 samples were found to be between 1.9 and 98.0 mg/kg with good reproducibilities (%RSD: 3.2% or better). There were no pathogenic microorganisms in any of the investigated samples. Electrical conductivity that gives information about their mineral contents was measured, and the mean value was found to be 0.33 mS/cm (N=34). In general, most of the samples were considered to meet the requirements of Turkish Food Codex and European Commission Directives.En este estudio se analizó muestras de miel producida en la zona oeste de Turquía. Se trabajó con 50 muestras del mercado local de la región, en las cuales se determinaron parámetros físico-químicos incluyendo el hidroximetilfurfural (HMF), conductividad eléctrica, sacarosa, acidez libre, humedad e impurezas insolubles en agua además de microorganismos patógenos presentes. Las cantidades de HMF determinadas en 47 muestras oscilaron entre 1,9 y 98,0 mg/kg con buena desviación estándar de la reproducibilidad (% de RSD/DSR 3,2% o mejor). No se encontraron microorganismos patógenos en ninguna de las muestras analizadas. La conductividad eléctrica, que aporta información sobre el contenido mineral, resulta en un promedio de 0,33 mS/cm (N=34). En general se encontró que la mayoría de las muestras cumple los requerimientos del Codex alimentario turco y de las directivas de la Comisión Europea.Fil: Bakirdere, Sezgin. Universidad Técnica de Yıldız (Turquía)Fil: Yaroglu, Tolga. Universidad de Ankara (Turquía)Fil: Tirik, Nihan. Ondokuz Mayıs University (Turquía)Fil: Demiroz, Mehmet. Uludag University (Turquía)Fil: Karaca, Abdullah. Fırat University (Turquía

Scar Formation and Tuberculin Skin Test Response After Bacillus Calmette-Guerin Vaccination: Does Prematurity or Low Birth Weight Have an Impact?

Objectives: The present studyaimed at evaluating factors affecting scar formation and tuberculin skin test (TST) response in Bacillus Calmette-Guerin (BCG) vaccinated infants

Seroprotection status of hepatitis B and measles vaccines in children with type 1 diabetes mellitus

Background: Type 1 diabetes mellitus (T1DM) is speculated to have an impaired immunological response to vaccines. This paper aimed to investigate the presence of specific antibodies against hepatitis B virus (HBV) and measles in diabetic children who had been immunized according to the standard national calendar of immunization

Determination of As, Cd, and Pb in tap water and bottled water samples by using optimized GFAAS system with Pd-Mg and Ni as matrix modifiers

Arsenic, lead, and cadmium were determined in tap and bottled water samples consumed in the west part of Turkey at trace levels. Graphite furnace atomic absorption spectrometry (GFAAS) was used in all detections. All of the system parameters for each element were optimized to increase sensitivity. Pd-Mg mixture was selected as the best matrix modifier for As, while the highest signals were obtained for Pb and Cd in the case of Ni used as matrix modifier. Detection limits for As, Cd, and Pb were found to be 2.0, 0.036, and 0.25 ng/mL, respectively. 78 tap water and 17 different brands of bottled water samples were analyzed for their As, Cd, and Pb contents under the optimized conditions. In all water samples, concentration of cadmium was found to be lower than detection limits. Lead concentration in the samples analyzed varied between N.D. and 12.66 ± 0.68 ng/mL. The highest concentration of arsenic was determined as 11.54 ± 2.79 ng/mL. Accuracy of the methods was verified by using a certified reference material, namely, Trace Element in Water, 1643e. Results found for As, Cd, and Pb in reference materials were in satisfactory agreement with the certified values. © 2013 Sezgin Bakirdere et al