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Abstract

Hydroponic systems are highly appreciated today, due to their potential to protect the environment and ensure a high level of food safety. In general, aromatic plants play a very important role in the food, pharmacy, cosmetics, perfumery and aromatherapy industries, all these products being highly appreciated by consumers. Due to their importance, different hydroponic systems are put in place to grow at different levels, these aromatic plants. In the present study, is analyzed the influence of three different hydroponic systems (two vertical and one horizontal) on minerals content and nutritional quality of two varieties of Occimum basilicum and one Mentha piperita variety. In this study are presented dry matter content, ash, micro and macro elements and contaminants content of leaves are presented. The results showed that the vertical system without foil had the best results, followed by the vertical system with foil comparative to the horizontal system that had the lowest content in nutritious principles. The vertical eco-sustainable systems proved to be a promising innovation for growing aromatic plants at the household level and a promising start for the intensive growing.

Abstract

In a nanobiotechnology world with many applications in biomedicine, a novel combination of inorganic-organic materials is needed to prove a novel functionality. Natural compounds from bee pollen extract coated on magnetite nanoparticles could open up a new way in apitherapy field. Iron oxide nanoparticles have proved special requirements for biological applications like superparamagnetic properties, high biocompatibility and nontoxic material. Magnetite nanoparticles functionalized with natural bioactive substances extracted from bee pollen have been characterised and investigated for antimicrobial activity. Previous findings demonstrate that magnetite nanoparticles (MNPs) and pollen ethanolic extracts (PEE) exhibited antimicrobial activity against a large antimicrobial spectrum, including Grampositive, Gram-negative and antifungal microorganisms.

Abstract

During the last years, in Romania and Bulgaria, an acceleration of existent disparities took place compared to the European Union countries as regards the occupational labor structures and an decreased evolution of the active population migration to other EU states. Starting from these considerations, the present paper shows an analysis of general and specific aspects of the labor market in the two neighbouring countries, starting from the general analysis, at national level, continuing with the regional analysis until the local analysis of the labor market, at cross border level. In Romania, in 2016, an employment rate of the population at work age (15-64 years old) was of 61.6%, to an active population of 8,979 thousand persons, of which 8,449 thousand employed persons and 530 thousand were unemployed. In Bulgaria, in 2016 the active population was of 3,264 thousand persons, respectively, 53.3%, of which 3,199.6 thousand employed persons and 64.4 thousand unemployed. The employment rate of the work was of 68.7%.. There are still signs that in the two countries the legislation complies to the realities and needs in practice.

Abstract

The aim of the study was to assess the absorbtion degree of different nitrogen forms (ammonium, nitric, amidic) from soil into the plant by using nuclear techniques and 15N isotope as a tracer. In the same time, the effect of foliar fertilization on increasing the efficiency of nitrogen use by biostimulating the plant up-take was highlighted. Urea and ammonium nitrate labeled with 15N isotope (10% from total nitrogen content of the fertilizers being covered by 15N isotope) were incorporated in soil. In order to highlight the efficiency of foliar fertilization, fertilizers having NPK matrix with mezo and microelements and proteic organic compounds (animal and vegetal) were designed and obtained. The effects of experimental treatments on isotopic indicators (15N/14N isotopic rate, δ 15N isotopic accumulation degree, 15N isotope export, absorbtion degree of 15N isotope) from plant were assessed. The tested plant was maize (Cortes hybrid). The values obtained were statistically analyzed by using variance analyze, with two factors, Duncan test of multiple comparison, multiple comparison threshold α= 0.05. The results of agrochemical testing showed that the absorbtion degree of 15N isotope from soil into maize plant was highest for the amidic (N-NH2) form of the nitrogen comparing with the other forms (N-NO3, N-NH4).

Abstract

This paper aims to show the importance of knowing the health status of fish populations in their natural environment and its influence on fish stocks at the Romanian coast. To assess the interrelationship between fish health status and the state of stocks, the following fish species: turbot, sprat, anchovies and horse mackerel were analysed from the pathological point of view. Pathological analyses performed between 2015 and 2017 revealed the presence of infections caused by bacteria of the genus Aeromonas and Vibrio and parasitic diseases Trichodinosis, Botriocephalosis and Nematodosis. The presence of these diseases in natural fish populations may represent a real danger to the state of existing stocks, but also to their evolution.

Abstract

Faba bean (Vicia faba L.) is one of the most important legume crop and cultivated nearly all parts of the world. Present study was aimed to investigate the variation in the micro and macronutrients concentration in the Turkish faba bean germplasm. A total of 200 landraces and 3 commercial cultivars were collected from the different geographical regions of Turkey. Study was conducted at the research and experimental area of Department of Crop and Animal Production, Vocational School of Sivas, University of Cumhuriyet, Sivas, Turkey in 2016. Result of this study reflected higher level of diversity for studies nutrients; (N) (5.21-8.15 %), phosphorus (P) (0.1-0.98 %), potassium (K) (0.94-5.6 %), magnesium (mg) (0.32-0.42), calcium (Ca) (0.50-1.50), copper (Cu) (8.13-34.23 mg kg-1), zinc (Zn) (28.42-64.33 mg kg-1), iron (Fe) (44.86-128.53 mg kg-1), and manganese (Mn) (16.56-35.76 mg kg-1). Average concentrations of micro and macronutrients were found higher in the landraces as compared to the commercial cultivars. Principal component analysis grouped the studied germplasm into two groups on the basis of their Zn concentrations. Results from this study expressed the presence of high range of diversity in the Turkish faba bean germplasm for micro and macronutrient elements. Findings of this study will serves as starting point for the development of improved faba bean varieties through conventional and modern breeding technologies and these variations will be helpful for the identification of linked markers through the genome wide association studies and identifying diverse parents for quantitative trait locus (QTL) mapping.

Abstract

Our bibliographic insights have shown that although thermographic imaging in small animals has been poorly studied, the empirical use of thermographic images in dogs suggests that thermographic imaging could be a useful method in assessing walking anomalies. The study aims to identify existing thermal asymmetries between the thermal paw prints of the hind limbs in healthy dogs (right versus left). For thermal investigations, the Flir E50 thermal camera with a resolution of 240×180, thermal sensitivity of 0.05ºC, 45º×34ºA visual field and unbalanced microbolometer was used. Acclimatization of the animals in the space for examination was 30 minutes (at a room temperature of 20-23°C). The resulting images were recorded, processed and analyzed with the Flir tools 2017 software. The average, maximum and minimum temperature of each image was calculated using the program. The results obtained show that between the thermal paws marks of the posterior limbs in healthy dogs there is an average thermal asymmetry comprised between 0.2 and 1.4°C. Our study suggested that, under controlled conditions, thermographic paws prints could be used to diagnose locomotor abnormalities in dogs..

Abstract

The aim was to evaluate the influence of the Arapaho, Thornfree and Triple Crown varieties in condition of the Republic of Moldova on main phenophases of the development of the blackberries plants, quantity of fruits, their average weight, productivity of the blackberry plantation and their economic productivity according to the biological particularities of the variety. The study subject of the experience was the Arapaho, Thornfree and Triple Crown blackberry varieties. The distance of plantation is 3.0 × 1.5 m. The experimental plot it was placed in the „Pomrubus” Ltd. founded in 2014 year. The research was conducted during years 2016-2017. During the research, it was studied the phenophases of the development of the blackberries plants, quantity of fruits and their average weight, productivity of the plantation and economic efficiency of the production of blackberries. During the analyzed period, it was established that the phenophases of the development of the blackberries plants, quantity of fruits, their average weight, productivity of the plantation and economic efficiency of the production was in direct correlation with the biological particulates of the studied varieties of the blackberry.

Abstract

Among bioactive constituents occurring in mushrooms, phenolic compounds focus attention due to their antioxidant activity. Also, a special attention is given to mushrooms secreting extra cellular enzymes such as lignin peroxidases (LiP), manganese peroxidase (MnP) and laccase (Lac), enzymes which can be used in biodegradation processes. The aim of the present study was to investigate ten mushroom species for total phenolic compounds, lignocellulolytic enzymes and for their synthetic dyes decolourisation potential. For this purpose, 70% ethanol extracts of ten dried mushrooms were analysed using spectrophotometric methods. The results revealed that total phenolic compounds in the extracts were the highest in A. campestris, P. ostreatus var. Florida and T. versicolor. Laccase activity showed high values in extracts from P. ostreatus var. Florida, A. campestris, L. edodes, and G. applanatum. Lignin peroxidases (LiP) activity showed high values in extracts from A. campestris, F. velutipes, P. ostreatus var. Florida and T. versicolor, whereas manganese peroxidase (MnP) activity was highest in extracts from P. ostreatus var. Florida, A. campestris and G. applanatum. It was found that some of the fungal extracts showed high activities in decolorizing of synthetic dyes.

Abstract

Natural by-products from vegetable oil industries and spent edible oils from domestic or public food spaces should be recycled to obtain new added value products. Present paper proposed a technical solution for complete valorisation of inedible oilseeds or spent edible oils into bioproducts for nutrition and protection of plants cultivated in conservative organic agrosystems. Pressed cakes resulted from mechanical cold extraction of mustard oil contain residual oil and bioactive compounds which were released using an enzymatic cocktail 1:1 cellulase with proteases coupled with azeotropic solvents into a single Soxhlet extractor. From mustard meal, a solid fraction with glycerol derivatives of fatty acids (56.23% oleate and 17.47% linoleate) decanted from syrup (41.78% xylopyranoside and 48.48% trilinolein) and from mustard cake (76.44% linoleate) in the supernatant, the same oligosaccharide (29.64%) and proteinates (30.18%) in the solid fraction. The total extract was simultaneously concentrated and converted into a bioactive potassium salt emulsion able to encapsulate insectofungicidal natural compounds as bioproducts with agronomical applications.