Due to the importance of B

It is well-known that camelina oil, obtained from Camelina sativa seeds is rich in fatty acids, predominantly linolenic acid and is used successfully in pharmaceutical and cosmetic therapies. It is remarkable that this species has a great adaptability to environmental conditions, being able to cultivate it on agricultural parcels and polluted soils. The goal of this work is to evaluate the quantitative and qualitative differences of three types of camelina oils, obtained from varieties grown in Romania: GP 202-Spanish provenance, Camelia and Mădălina, both Romanian provenance. The effect of soil fertilization on the quality of the seeds /oil obtained from 3 varieties of camelina was tested, the control being the unfertilized Camelina variety. The following parameters have been evaluated: seed moisture, cold oil extraction yield, certain physico-chemical oil indicators and percent quantitative composition of individual and total fatty acids. Remarkable is the total fatty acid content of the oil that varies between 75.87 g% for the unfertilized Mădălina variant and 81 g% for the fertilized GP-202 variant. Taking in consideration the results for all the studied parameters, it can be concluded that the Mădălina variety is very similar to the other two, and fertilization contributes insignificantly to the improvement of the quality of the obtained oil.

Taking into consideration, that peppermint tea is frequently used in phytotherapy due to its wide range of therapeutic effects, ten samples of peppermint leaves were analysed in order to assess the level of pesticide residues and heavy metals. Pesticide residues were under the detection limit for six samples. However, in four peppermint samples we have determined λcyhalothrin (42-45 µg/kg), chlorpyrifos-ethyl (20-43 µg/kg), and cyfluthrin (78 ± 21 µg/kg), in concentrations below the maximum residues limits. In order to evaluate the negative impact of pesticides on patients health, a sample was spiked with the most common pesticide residues used in agricultural practice, by accumulation in the herbal product (diphenylamine 195.8 ± 16 µg/kg, chlorpropham 108.6 ± 12.4 µg/kg, hexachlorobenzene 76.7 ± 6 µg/kg, tolclofos-methyl 111.4 ± 39 µg/kg, cyfluthrin 472.7 ± 39.7 µg/kg). Moreover, we have observed that pesticide residues had a high transfer rate in infusion (diphenylamine 71.5%, chlorpropham 158.4%, chlordane-gamma 63%, tolclofos-methyl 61.5%). From the point of view of the heavy metals content, the sample shown concentrations over allowed limits (cadmium 98 µg/kg, copper 7140 µg/kg, lead 1500 µg/kg, mercury 170 µg/kg), some being transferable in infusion (nickel 123.3 %, copper 28%). Rezumat În acest studiu au fost analizate zece probe de frunze de mentă în scopul evaluării nivelului de reziduuri de pesticide şi metale grele. Reziduurile de pesticide au fost sub limita de detecţie pentru şase probe, iar în patru probe de mentă au fost determinate λ-cihalotrin (42-45 µg/kg), clorpirifos-etil (20-43 µg/kg), şi ciflutrin (78 ± 21 µg/kg), în concentrații sub limitele maximale. Pentru a evalua impactul negativ al pesticidelor asupra sănătății pacienților, o probă a fost fortificată cu cele m ai frecvent folosite pesticide în practica agricolă, constatându-se o acumulare în produsul vegetal (difenilamină 195,8 ± 16 µg/kg, clorprofam 108,6 ± 12,4 µg/kg, hexaclorbenzen 76,7 ± 6 µg/kg, tolclofos-metil 111,4 ± 39 µg/kg, ciflutrin 472,7 ± 39,7 µg/kg). Am constatat faptul că reziduurile de pesticide prezintă o rată de transfer crescută în infuzie (difenilamină 71,5%, clorprofam 158,4%, clordane-gamma 63%, tolclofos-metil 61,5%). Din punct de vedere al conținutului de metale grele, proba prezintă concentrații peste limitele permise (cadmiu 98 µg/kg, cupru 7140 µg/kg, plumb 1500 µg/kg, mercur 170 µg/kg), unele fiind transferabile în infuzie (nichel 123,3%, cupru 28%).

The aim of the current study was to determinate the adsorption degree of pesticide residues on MCM41 mesoporous material from plant extracts usually used in phytotherapeutic treatments. The choice of the material was based on the high adsorption capacity, due to the specific surface area, over 800 m2/g and for the possibility of their regeneration/reusability capacity. The silica matrix was synthesized starting from tetraethylorthosilicate (TEOS)- the silica source and hexadecyltrimethylammonium bromide (CTAB)- as a template agent, the whole process taking place in continuous flow at room temperature and normal pressure. The material obtained was characterized by microscopy techniques (transmission and scanning electron microscopy TEM and SEM) for determination of pores morphology, by standard method Brunauer-Emmett-Teller for pore size distribution and specific surface area (textural analysis- B.E.T), by Fourier-transform infrared spectroscopy (FTIR) for spectral fingerprint and by dynamic light scattering (DLS) for determination of hydrodynamic diameter of particles. The tests were carried out on extracts performed with organic solvents from some medicinal species (Menthae officinalis, Salvia officinalis, Matricaria chamomilla), using mesoporous material MCM41 for isolation / concentration of pesticide residues. Quantitation of pesticide residues was performed using a gas chromatograph coupled with a triple quadrupole mass spectrometer (GC-MS/MS), for both extracts and MCM41 material.

The study was conducted during 2014-2017 to obtain planting material by grafting the walnut directly in solarium conditions. The grafting method used was chip budding. The two grafting periods were August (sleeping bud grafting) and April (growing bud grafting). The best results were obtained in the case of walnut grafting in April, when the temperature conditions, the relative humidity of the air and the intensity of the light are close to the optimal, in this case grafting success percent is between 39 and 57%. In the case of walnut grafting in August, the best results were obtained with the use of the grafted branches wrought one month before grafting (grafting success 24%). Cuvinte cheie: nuc, altoire, metoda de altoire, perioada de altoire, solar.