Statistical evaluation of heavy metal content in some capsicum varieties available on the Romanian market

The aim of this study is to emphasis the heavy metals content in seven capsicum varieties of capsicum of the specie Capsicum annuum L., available on the Romanian market. From the analyzed Capsicum fruit samples, three Capsicum assortments were cultivated in Romania and the other four were imported from Italy and Turkey. The studied heavy metals (copper, zinc, manganese, iron, cobalt, lead, nickel, cadmium and chromium) have normal concentration values that are not of any risk to human health. Cadmium is not detectable in all studied samples. The heavy metal content associated with statistical analysis programs permits the identification of characteristics specific to the origin of products and the graphical chemical fingerprint of the studied capsicum species. The chemical fingerprinting of a plant demands the determination of a large number of elements (DJINGOVA ET AL., 2004). The study is revealing similar distribution pattern

Graphical chemical fingerprints of parsley, dill and lovage leaves

The aim of this study is to emphasis the use of thermo gravimetrical water content and trace metals analysis to identify the chemical graphical fingerprints of parsley, dill and lovage leaves. Copper, zinc, manganese, iron, nickel and lead have normal concentration values that are not of any risk to human health. Cobalt, chromium and cadmium were not detectable in all studied samples. The water and present trace metals contents associated with mathematical models permits the identification of characteristics specific to the studied vegetable leaves as well as the graphical chemical fingerprints. The study is revealing similar distribution pattern

Changes in the structure of actinomycete populations in the rhizosphere of vicia sativa species

It is a known fact that species of legumes improve the soil they are grown on, but at the same time, they produce the so-called rhizosphere effect or rhizodeposit that has a selective effect on the microorganisms which are considered "fertility effectors" for soil. From the three studied area the highest number of actinomycetes was found in edaphosphere and the lowest number in the area influenced by roots. Among the few factors under research for the purpose of this paper, humus and potassium were observed to have the strongest impact on this group. Humidity is a factor that could change the competition between soil microorganisms and plants in the soil for N and it could affect the stability of aggregates

Vegetables, fruits, honey and pollen, a natural source of zinc

This work aimed to evaluate zinc content in six common vegetables (parsley, carrot, dill, onion, cucumber and beans), three common fruits (apples, raspberry and dog rose), bees honey and pollen. Determination of zinc content in soil, raw vegetables and fruits, as well as in bees honey and pollen from local apiaries were carried out by FAAS. All experiments and analyses were performed in triplicate. Overall, the highest zinc concentration was found in the leaves (carrot 48.07 mg kg-1, parsley 46.62 mg kg-1, dog rose leaves 36.13 mg kg-1) and beans crops (41.26 mg kg-1). According to our study the highest content occurs in the plants of the Apiaceae Family and in Rosa canina leaves

Seasonal variation in nutrient content of some leafy vegetables from Banat County, Romania

The aim of this study is to investigate the effect of seasonal variation of the moisture content and trace metal composition of spinach, butter lettuce and parsley leaves. The content of bioactive compounds in green leafy vegetables at harvest has beneficial effects on human health. It was found that moisture, macro and microelement content vary from one season to another. Water content measured by thermo-gravimetric method is presenting small variation during the seasonal change, revealing the lowest value for spinach, butter lettuce and parsley leaves, in June. Calcium, magnesium and potassium concentrations in leaves are decreasing in spinach, lettuce and parsley from April to September, but the variations are small. Copper is accumulating mostly in parsley leaves and less in lettuce and spinach. Knowing the concentration of important nutrients in different seasons helps do decide the harvesting period in according to the richness of the diet for each individual

Statistical evaluation of heavy metal content in some capsicum varieties available on the Romanian market

The aim of this study is to emphasis the heavy metals content in seven capsicum varieties of capsicum of the specie Capsicum annuum L., available on the Romanian market. From the analyzed Capsicum fruit samples, three Capsicum assortments were cultivated in Romania and the other four were imported from Italy and Turkey. The studied heavy metals (copper, zinc, manganese, iron, cobalt, lead, nickel, cadmium and chromium) have normal concentration values that are not of any risk to human health. Cadmium is not detectable in all studied samples. The heavy metal content associated with statistical analysis programs permits the identification of characteristics specific to the origin of products and the graphical chemical fingerprint of the studied capsicum species. The chemical fingerprinting of a plant demands the determination of a large number of elements (DJINGOVA ET AL., 2004). The study is revealing similar distribution pattern

Vegetables, fruits, honey and pollen, a natural source of zinc

This work aimed to evaluate zinc content in six common vegetables (parsley, carrot, dill, onion, cucumber and beans), three common fruits (apples, raspberry and dog rose), bees honey and pollen. Determination of zinc content in soil, raw vegetables and fruits, as well as in bees honey and pollen from local apiaries were carried out by FAAS. All experiments and analyses were performed in triplicate. Overall, the highest zinc concentration was found in the leaves (carrot 48.07 mg kg-1, parsley 46.62 mg kg-1, dog rose leaves 36.13 mg kg-1) and beans crops (41.26 mg kg-1). According to our study the highest content occurs in the plants of the Apiaceae Family and in Rosa canina leaves

Changes in the structure of actinomycete populations in the rhizosphere of vicia sativa species

It is a known fact that species of legumes improve the soil they are grown on, but at the same time, they produce the so-called rhizosphere effect or rhizodeposit that has a selective effect on the microorganisms which are considered "fertility effectors" for soil. From the three studied area the highest number of actinomycetes was found in edaphosphere and the lowest number in the area influenced by roots. Among the few factors under research for the purpose of this paper, humus and potassium were observed to have the strongest impact on this group. Humidity is a factor that could change the competition between soil microorganisms and plants in the soil for N and it could affect the stability of aggregates

Graphical chemical fingerprints of parsley, dill and lovage leaves

The aim of this study is to emphasis the use of thermo gravimetrical water content and trace metals analysis to identify the chemical graphical fingerprints of parsley, dill and lovage leaves. Copper, zinc, manganese, iron, nickel and lead have normal concentration values that are not of any risk to human health. Cobalt, chromium and cadmium were not detectable in all studied samples. The water and present trace metals contents associated with mathematical models permits the identification of characteristics specific to the studied vegetable leaves as well as the graphical chemical fingerprints. The study is revealing similar distribution pattern

Manganese(III) Porphyrin-based Potentiometric Sensors for Diclofenac Assay in Pharmaceutical Preparations

Two manganese(III) porphyrins: manganese(III) tetraphenylporphyrin chloride and manganese(III)-tetrakis(3-hydroxyphenyl)porphyrin chloride were tested as ionophores for the construction of new diclofenac–selective electrodes. The electroactive material was incorporated either in PVC or a sol–gel matrix. The effect of different plasticizers and additives (anionic and cationic) on the potentiometric response was studied. The best results were obtained for the PVC membrane plasticized with dioctylphtalate and having sodium tetraphenylborate as a lipophilic anionic additive incorporated. The sensor response was linear in the concentration range 3 × 10−6 – 1 × 10−2 M with a slope of −59.7 mV/dec diclofenac, a detection limit of 1.5 × 10−6 M and very good selectivity coefficients. It was used for the determination of diclofenac in pharmaceutical preparations, by direct potentiometry. The results were compared with those obtained by the HPLC reference method and a good agreement was found between the two methods