Browse

The study was performed in order to establish the efficacy of the biological product пїЅNemagoldпїЅ in the control of root-knot nematodes (Meloidogyne spp.) on tomato crop under plastic tunnel conditions. Experiment was organized on tomato crop (cultivar пїЅPrekos F1пїЅ) strongly attached by root-knot nematode, located in south-east of Romania (Varasti-Giurgiu), during July-September 2016 period. Treatments were applied by drip irrigation during the second vegetation season. пїЅNemagoldпїЅ product having in compos...

Research studies have also suggested that the antioxidant properties of hibiscus tea may also help in treating many diseases. Hibiscus tea is rich in vitamin C, minerals and various antioxidants, while also helping in the treatment of hypertension, stress and anxiety. Choosing the best sweetener for the hibiscus tea can face/be a big problem due to several composition changes that the hibiscus tea registers during the sweetening process, the level of gained toxicity, the different health level of the consumers (es...

Nowadays, green technologies and agri-environment measures play a vital role for sustainable development. Taking into consideration that more than a half of the Romanian land is farmed, agriculture is very important for the Romanian natural environment. The aim of this paper is to provide a detailed picture of the Romanian agri-environment measures and to outline the importance of agri-environmental protection for sustainability of agricultural systems, habitats, and rural area. In this paper, we included a docume...

Tomatoes represent the host plant for the pathogen Phytophthora infestans. Together, as plant and pathogen, create a system named by A.R.ROBINSON pathosystem [1]. The plants are known as producers of many metabolites such us therpenes, alkaloids, flavonoides and amino acids. From this point of view naturally occurring substances present in different plants can represent a continuous resource of biological agents. Late blight of potato (Phytophthora infestans Mont. de Bary) is a serious threat to potato production ...

Biguanide and its N-substitutes derivatives represent a difunctional compounds group known for their diversity therapeutical activities, such as antimalarial, antibacterial, disinfectant, antiviral, antihyperglycaemic agents and recently literature reports as analgesic and antidepressant drugs, selective agonistsпїЅ serotoninergics for the serotonin 5-HT3 receptors. In the last years the literature points out a large practical applications spectrum of the 4f metal complexes for their remarcable spectroscopy, optic...

Cruciferous vegetables are rich source of phytochemicals which play an important role as a health-protecting factor. These compounds and enzymatic systems may combat oxidative stress in the human body by maintaining a balance between oxidants and antioxidants. This is particularly important because under oxidative stress excessive formation of reactive oxygen species (ROS) can damage biomolecules, such as DNA, proteins, lipids and carbohydrates, and lead to numerous disease conditions. The enzyme superoxide dismut...

The global population of menopausal women is on the rise and expected to increase from 470 million in 1990 to 1.2 billion by the year 2030. Most of them suffer from postmenopausal symptoms, such as hot flushes, tender breasts, vaginal dryness, reduced bone mineral density, cognitive deterioration and neuropsychiatric disorders such as different mood disturbances and cognitive impairments including AlzheimerпїЅs disease (AD). Considering the wide use of complementary and alternative medications such as bioactive su...

The paper deals with the removal of hydrocarbons C10-C40 from the river sediment using flotation and bacterial leaching. Flotation, as a purely mineral processing method, was used to remove a large percentage of organic pollutants. Flotation has not been applied in the cleaning of organically contaminated soils and sediments in the Czech Republic so far. The flotation collecting agent was Montanol 551. The flotation results show that the method appears as very effective as dominant proportions of the pollutants pa...

The use of marine algae in plant cultivation has been known since antiquity, but their application to reduce abiotic stress has been reported in recent years, when the use of technology based on healthy products for humans and other organisms has become a priority. In this work, we investigated the effect of a seaweed extract from the brown alga Ascophyllum nodosum (L.) Le Jolis (SuperFiftyпїЅ 0-0-8) on drought stress tolerance in Phaseolus vulgaris L. Been plants have been influenced by drought stress for a week ...

The purpose of this study is to highlight the flavour compounds found in tonic beverages obtained from plants with bioactive potential. Identifying these compounds through GC-FID (gas-chromatographic coupled with flame ionization detector) modern methods are leading to the appreciation of these beverages and the possibility of improving the proposed recipes. Six drinks rated B1, B2, B3, B4, B5, B6 made from indigenous plants; the plants were dried at 65 пїЅ C, macerated in 50% vol. ethanol for three days in a rati...

On the last four years, we take surveys on the diseases of some plants from natural habitats which, over time, support improvement by plant breeding process One of the locations where we can found such natural resources is the Nera River valley, inside of the National Park, and those is the main reason we are sure that this plants are on their natural habitat. Regarding elderberries shrubs (Sambucus nigra) on the research area, they are well represented as populations along the river sides. It is well known the ut...

In order to make selection methods more efficient and to make improvement works perfect in developing new mustard cultivars at the Agricultural Research Station in Lovrin, we carried out a series of research and biometrical measurements starting from the necessity of better knowing specific variability, quantitative features, productivity features, the way they are passed on hereditarily, and the intensity of the correlations between them.Yielding capacity is a complex quantity feature based on a large number of e...

In Romania, wheat is the main crop, occupying the largest area of arable land. Convolvulus arvensis is a competitive and invasive weed, produces direct and indirect damages to which is added production of allopathic substances. Allelopathy is a natural phenomenon which refers to any direct or indirect effect, positive or negative of a plant (including microorganisms) on the other by the release of chemical compounds in the environment [13]. In most cases, influence is inhibitory, which may explain why some plants ...

The aim of this work was to determine, comparatively, the content of vitamin C (by iodometric method), polyphenols (by Folin CiocпїЅlteu assay), chlorophyll pigments, carotenes, xanthophylls (by spectrophotometric method) and the antioxidant activity (by CUPRAC method) for some frozen vegetables on the Romanian market: okra (Abelmoschus esculentus), green beans (Phaseolus vulgaris)- Serengeti variety and green peas (Pisum sativum) пїЅ Alaska variety. Frozen peas was the most rich in ascorbic acid (9.32 mg/100g) an...

The increase in the number of potentially toxic substances has led to a more complex task of determining the toxicity of water resources. This is due to an increase in the number of necessary techniques for the separation, identification and subsequent analysis of individual components. At the same time, the determination of quantitative relationships between individual components does not allow us to determine precisely whether these concentrations are sufficient to classify the water samples under study as toxic...

The research in dairy cows in mountain aria demonstrated that the arithmetic average of the mammary repose period is about 62 days. This value is very close to the desired value of cow breeders. Very high value of the coefficient of variation (57.28%) shows that we are dealing with an average resulting from compensation. This theory is supported by very large difference of about 13 days between arithmetic and probable average of dry period. Probable average is 49 days to 311 registered cows, preceded by a shorter ...

The goal of study was to develop the method of food biopreparations production based on corn extract and DDGS - liquid waste of starch and ethanol production for usage in food products as acidity regulators instead of very expensive organic acids. Processes of waste bioconversion using Lactobacillus Acidophilus were the basis for biopreparations production. There were developed the modes of cultivation of lactic acid bacteria on nutrient media, the stages of productions were determined, chemical and biochemical co...

Nowadays, the leading place in space industry production materials belongs to reinforced polymers. One of the most popular reinforced polymer in this sector is produced from aramid fibers and epoxy resin as matrix with hot solidification at temperature 160 пїЅ 170 grad. Celsius. Despite the automated winding technology on modern machinery, there is an accumulation of epoxy resin as a waste happens. This paper is devoted to the processes of curing low-viscosity epoxy resin waste under the influence of orthophosphor...

Ostrava Lagoons belong among the most polluted areas in the Czech Republic. According to the available information, about 200 000 t of sludge from the industrial processing of crude oil during the whole 20th century were disposed there. The sludge contains high levels of organic pollutants (PAHs, PCBs, C10 - C40 hydrocarbons), including toxic metals of anthropogenic origin (As, Cd, Cu, Hg, Ni and Pb). A number of autochthonous microorganisms were isolated from the lagoon sludge. This study focuses on the biodivers...

The aim of this study was to evaluate the level of nine biogenic amines (putrescine (PUT), cadaverine (CAD), tyramine (TYR), tryptamine (TRY), 2-phenethylamine (2-PHE), histamine (HIS), spermidine (SPD), spermine (SPM) and agmatine (AGM)) into wines and beers from the local market of Romania. Their concentration in beer is of great interest not only for their potential risk to human health but also because they could have a role as chemical indicators of unwanted microbial contamination or deficient processing con...

The tomatoes are widely spread on all globe because the fruits have an important content of carbohydrate (2.9 - 7%), vitamins (A, B, B2, B6, C), salts of important mineral elements (K, P, Fe, Ca, I, Mg) and organic acids (0.5-1.5%). They are considered one of most important vegetable crops. The Romanians have classic options about the vegetable taste; they appreciate tomato with superior organoleptic qualities, the пїЅtaste of Romanian tomatoпїЅ. In Romania, the aim is the propagation and the cultivation of Romani...

Bacillus genus covers a wide spectrum of microorganisms able to produce various polymorphic forms of silicate minerals in the form of crystalline structure based on diverse sources of silicon. Bacterial microorganisms along with mineral crystals were examined on human skeletal remains in different phases of their decomposition which had been exhumed from a church tomb. In total, 52 microorganisms were isolated from the bone surfaces, among which prevailed the bacteria belonging to the Bacillus genus. This bacteria...

Lactoferrin (LF) is a globular glycoprotein with a molecular mass of about 80 kDa. It exists in two forms: apo- and hololactoferrin. Lactoferrin in the molecule has two domains that bind Fe3+ ions with high efficiency. The physiological properties of the protein are mainly due to binding to the iron of the active form by unsaturated iron (apolactoferrin). An iron-saturated form (hololactoferrin) is inactive. Raw milk contains mainly up to 90% apo-LF. Human milk is very rich in lactoferrin (about 1.7 g/L), and bovi...

An marinegastropod mollusk or whelk is well-known Rapana venosa with the common name the veined rapa whelk or Asian rapa whelk. It is a species of large predatory sea snail, in the family Muricidae, the rock shells. This large sea snail has become an invasive species in many different localities around the world. In the area of the Romanian seaside is also found Rapana venosa. Bivalvia is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged pa...

Ocimum basilicum L. (Lamiaceae) is a spice plant frequently cultivated in Romania with application in food flavoring and preservation, pharmaceutical products and alternative medicine. The purpose of this study was to determine the chemical composition and antioxidant effectiveness of the essential oil of Ocimum basilicum grown in Romania. The basil inflorescences (fresh plant material) was used for the extraction of essential oil. The essential oil was isolated with a yield of 0.52% (v/m) by steam distillation. G...

The species Ambrosia artemisiifolia L. is a native of North America and was introduced in Europe, in botanical gardens, in the 17th-18th centuries [3, 6]. First alerts on the presence of Ambrosia artemisiifolia L. in Romania was registered in 1910 [11]. In the period 1960-1985 Ambrosia artemisiifolia L. was considered a ruderal species and was sporadically reported in Romania. The results of recent research show that Ambrosia artemisiifolia L. is in full expansion in Romania, as well as an increase in abundance, b...

Screening the local flora for metal bioaccumulators is of great importance, the aim being that of finding species valuable for bioremediation (bioindicators, phytostabilizers, phytoextractors) or biomining. Chromium content was determined, through atomic absorption spectrometry (HR-CSAAS, air-acetylene, 357 nm) in aboveground organs eight common species growing on the beaches and adjacent areas in Constanta, Romania: Argusia sibirica, Atriplex sagittata, Echium italicum, Conium maculatum, Malva sylvestris, Onopord...

The aim of this paper was to obtain some fluid extracts from Romanian wild fruits such us, Cerasus avium L. Moench. (syn. Prunus avium L.), Morus nigra L. and Cornus mas L., with a rich content in polyphenols, carotenoids, vitamins, minerals and an increased antioxidant and antimicrobial activity, which bring important benefits to our health in preventing many diseases arose from free radicals of oxidative stress action. Vegetal fluid extracts obtained from wild fruits, at concentrations 50% v/v ethanol were obtai...

Dry eye disease became an important problem of public health, because of its increasing incidence, caused by pollution, global warming and expanding work on video terminals. Under the actual circumstances in which the ocular tissue lubricant, commonly referred as artificial tears, market includes every day new comers, the authors were interested to find out how the various active pharmacological agents impact on the eye surface. This different impact on the eye might be able to help practitioners to better individ...

In this work, the filamentous fungus Aspergillus niger was tested for its compatibility with different media compositions, other plant growth promoting microorganisms, and plant growth stimulators. As a first step, a medium selection was carried out employing as a criterion the P-solubilizing activity of A. niger. The highest soluble P concentration of 136,92 mg/L and 394,93 mg/L was registered on Potato-Dextrose and Czapek-Dox medium in conditions of submerged and solid-state fermentation processes, respectively....

Nowadays, we can notice a phenomenon of extreme diversification of the categories of complex and colorful wrapped food products that attract more consumers on local or world market. The current trend in the modern consumer orientation is for new food products that satisfy both nutritional and sensorial requirements and cause the appearing of new products on the food market. However, we must say that food has a complex composition, sometimes indiscernible to consumers and associated with an improper diet, poor in n...

The article reviews and analyzes the existing computer systems and platforms for the dynamic monitoring of bee hives, through which various states of bee colonies can be detected and analyzed. Contemporary solutions are based on the Internet of Things (IoT) concept and consist of a number of different sensors that collect several types of data about the internal condition of the hive. The article proposes a new model of IoT-based monitoring system, which consists of sensors being located inside and outside of bee ...

In recent years, the ultrasonic field has gained the attention of several authors in the area of employing it to process and interact with fruit juices as a viable alternative to the use of conventional processing technologies. The ultrasound technique main advantage, as a non-thermal treatment, is its ability to maintain juice quality whist enhancing the juice homogenization level. The aim of this study was to subject the sea buckthorn juice to ultrasonic field treatment in order to improve the its pulp stability...

Dissolving pulp is widely used for the manufacture of functionalized materials competing with cotton and chemical fibers. One of the most widespread applications of dissolving pulp is the production of cellulose acetates. To produce high quality acetates the pulp with high cellulose content, high reactivity, and narrow molecular weight distribution is required. Conventional dissolving pulp process is based on the sulfite pulping or pre-hydrolysis kraft pulping. Further processing includes cold or hot alkali extrac...

The present investigation was done to assess cytomorphologic and cell cycle parameters as indicators of genotoxicity as it is a simpler method and could be suggested for rapid screening of the vast range of agrochemicals used all over the world. The excessive and indiscriminate use of agrochemicals is responsible for increasing the level of pollutants in the soil environment resulting in cellular and molecular damage to the plants. Topas 100EC is a widely employed foliar fungicide for horticultural applications. A...

The potential for biodegradation of chemically different dyes of six fungi and bacteria isolated from organic pollutants- and synthetic polymer-contaminated sites was determined. Standard enrichment isolation methods using low-nutrient-concentration media were used to obtain bacterial and fungal organisms from environmental samples. The isolates were taxonomically characterized using molecular analysis and Biolog identification system. The isolates included bacterial strains of Pseudomonas putida, Pseudomonas viri...

Neuroleptic drugs (gr. neuro lepsis + mounting tranquilizer synonyms staff, antipsychotic, neuroplegic) are a class of medicines from pharmacology, used in the treatment of the various forms of psychoses, for example schizophrenia, the paranoia or other behavioral deviations. The effect of the neuroplegics itself through the 3 types of actions: 1 psycho-physiological actions, 2 antipsychotic actions, 3 neurological actions. Development of an analytical methods for quantitative analysis of risperidon of feed for th...

The future manned space flights will be accompanied by collecting a significant amount of unique experimental data: electrocardiogram, encephalogram, myogram, and rheoencephalogram generated by human body under conditions of outer space. However, while systems of monitoring crew membersпїЅ mental and physical performance capability are well developed, problems related to obtained data interpretation, which is necessary for predicting dramatic changes in human behavior or health status and for maintaining normal li...

Diabetes type I is one of the most important medical and social problem of health in all countries of the world. Treatment of diabetes type I diabetes is based on insulin therapy. Introduction ?-2? interferon in addition to insulin therapy for patients with diabetes type I at the beginning of the disease can slow the progression of the disease and even achieve remission. Therefore, the purpose of this work was to develop a method of producing nanoparticles loaded with interferon for oral delivery systems of drugs....

The aim of this study was to analyzed the effect of magnesium ions from gluconate and lactate salt at the level of 100, 150 and 200 mg/100g addition on empirical and fundamental dough rheological properties from the wheat flour type 550. Wheat flour is considerate a very good one for bread making having 14.0% moisture content, 0.55% ash, 13.2% protein, 1.4% fat content, 31% wet gluten and 8 mm gluten deformation index. Dough empirical rheological properties were analyzed using the Alveograph and Glutograph device....

Abnormal numbers of specific types of leukocytes may indicate immuno-suppression or immunocompetence in response to an immunomodulator. The objective of this study is to investigate the effect of feeding broilers on diet containing flaxseed on splenocyte Tand B- cells. Upon hatching, all chicks were given the same basal diet for 13 d. Dietary supplementation of flaxseed started at 14 d of ages until the end of the cycle at 35 d of age. At slaughter, samples of spleen were collected. Spleen cells were harvested in ...

Novel trends in the market of fermented dairy products are leading to obtain various products with high functional and nutritive but less energy value. The development of new fermented dairy products could be divided into two groups in order to: 1. obtain products with improved physicochemical characteristics, rheology, texture, microstructure and sensory properties; 2. obtain products with pronounced nutritive characteristics and functionality. Yogurt is a very popular dairy product in most countries, it is consi...

The reactive oxygen species are usually generated by normal cellular activities of the aerobic metabolism and play the role of a signal molecule and beneficial growth regulator. When plants are exposed to stress conditions the concentration of reactive oxygen species increases. Therefore, to neutralize these free radicals and to protect cells from oxidative damage enzymatic and non-enzymatic antioxidant systems are activated. In this paper it was investigated the effect of drought on the activities of antioxidant ...

Grape seed flour (GSF) is a viable ingredient used in bread-making to improve its nutritional value. Wheat flour bread is the most consumed bread, mainly produced from white flour which has a reduced nutritional value. In this study GSF from white wine pomace, at different particle sizes was used in wheat flour type 550 at levels from 3% to 9%. This type of wheat flour was of a strong one for bread making with a low deformation index which presented a low alpha amylase activity due to its falling number index valu...

Natural compounds and products are increasingly demanded by the pharmaceutical and cosmetics industries as safer and user friendly alternatives to synthetic variants. Young wheat plantlets, known as wheatgrass, are a valuable source of minerals, vitamins and chlorophyll pigments and the biosynthesis of such compounds may be influenced by the cultivation conditions. The present study focuses onto the chemical profile, mineral and chlorophyll content of cultivated wheatgrass using two different types of water (sprin...

The oxygen plasma-based bonding of a liver-on-a-chip platform has been optimized for immunostaining and RNA extraction during differentiation of induced pluripotent stem cells into hepatocytes on-chip. The device is a structural and fluidic mimicry of the liverпїЅs lobules, consisting of a double layer of polydimethylsiloxane (PDMS) bonded to glass. This bonding has been adjusted in terms of power, exposure time and post-exposure baking to make the device separable from its glass slide, making cells cultured insid...

The most studied and promising for the biotechnological production among extreme halophiles are archaebacteria Halobacterium salinarum. Food additives for humans and animals based on these halobacteria have an immunostimulating, antioxidant effect, can be used in complex therapy of viral diseases, and contain biologically unique active substances, vitamins and microelements. High-price hydrolysates and enzymatic hydrolysates of high-quality raw materials are used for H. salinarum cultivation. This causes a high co...

Starch is widely used as a biodegradable component in the production of modern packaging materials. Determination of starch is necessary to control the stage of production of starch-containing materials, as well as to assess their biodegradability. The main process leading to the destruction of biodegradable composites is the biological degradation of starch under the influence of enzymes when starch-containing materials are located in the natural environment. Two types of starch-containing packaging materials wer...

Drought and associated effects can cause serious damage to crop maize. Breeding drought tolerance by the development of new hybrids, aims at identifying some accurate screening techniques. The objective of this study was to evaluate the effect of the hydrological conditions (with stress - drought year and without stress - normal year) on the yield and other traits for six maize hybrids grown at ARDS ?imnic, Craiova and to investigate drought tolerance of these hybrids using several stress tolerance indices. Analys...

The aim of this study was to analyzed the effect of calcium ions from gluconate and lactate salt at the level of 100, 150 and 200 mg/100g addition on empirical dough rheological properties from the wheat flour type 1250. Dough empirical rheological properties were analyzed using the Farinograph, Amilograph, Glutograph, Alveograph, and Rheofermentometer devices. These devices allow us to obtain complete informations about dough rheological properties during mixing, pasting and fermentation process of wheat flour do...