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Studiu privind estimarea potenţialului melifer din arealul comunei Victoria, judeţul Iaşi
No full textThe current paper representsa study accomplished on the territory of Victoria commune, in Iaşi County,to estimate the honey potential of the area. The results showed that here lives a spontaneous, diversified and cultivated flora, among which exist also species of honey interest (acacia, linden, rapeseed, sunflower etc.); they can provide up to 333 tons of honey, which would ensure conditions for the maintenance of 2797 stationary beefamilies. The area can also assuregood conditions for capitalizing on the honey potential by pastoral beekeeping, especially for acacia harvesting, where could be moved up to 15200 hives
Comportarea unor soiuri noi de trandafiri în condiţiile ecopedologice ale comunei Vânători, judeţul Galaţi
No full textThe interest for the cultivation of the rose in field has increased in the last years, but the various ecopedological conditions existing on the Romanian territory impose the necessity of some studies regarding the behavior of the different varieties at these conditions. The paper aims to evaluate the behavior of four new varieties of roses from the group Tea hybrida (‘Artemis’, ‘Alex Dima’, ‘Catrina’ and ‘Cristinica’, varieties belonging to the author and approved in 2018 and 2019), in the cultivation conditions in the SE area of Romania, respectively Vânători village, Galati county. The study included the evaluation of the decorative value of the plants based on the morphometric determinations performed during the vegetation period and the rating of the main characters according to the evaluation method proposed by Ştefan Wagner. By using the method of assessing morphological characteristics, a method based on the assessment criteria used by the American Rose Society for the registration of new rose varieties, the highest score was recorded by the variety ‘Alex Dima’ (84 points) and the lowest score by the variety ‘Cristinica’ (82 points)
The role of antioxidants in boar semen preservation
No full textThe aim of the research was to test the biologically active substance obtained by the Institute of Microbiology of the Scienсe Academy from Moldova. It was introduced in the basic medium as an additional component for boar semen dilution. The obtained experimental data showed that the introduction of 7% of the biologically active substance in the basic medium had positive results in the preservation of the semen material quality at 16-18°C. After 96 hours of conservation at 16-18°C the sperm motility of the spermatozoa was 54.3%
Evaluarea capacităţii agroproductive la câteva genotipuri de cânepă dioică, în condiţiile de la S.C.D.A. Lovrin
Get PDFHemp culture has been unjustly neglected in recent decades, despite
the fact that can be used successfully in many areas, returns currently. The
present paper aims to evaluate the agro-productive capacity of stems and fiber
of some dioic hemp genotypes from the A.R.D.S. Lovrin. The research was
carried out on a typical chernozem, weakly gleized and weakly alkalized.
During the analyzed period, the production of stems and fiber evolved
differently. Compared to the control used, there are distinctly significant and
very significant differences in the production of strains, statistically assured for
the probability of transgression of 1% and 0.1%. The fiber production did not
differ from the control, the recorded values being closely grouped around it
Novel application of Trichilia Heudelotii planch: effectiveness of different polarity of organic solvents of leaf and stem bark extracts on the control of cowpea beetle
No full textCallosobruchus maculatus (cowpea beetle) is a field-to-store pest causing over 90% losses of cowpea. The search for new plant-derived crop protectant that can be explored as alternative to synthetic pesticides is urgently needed. Thus, the phytochemical
screening, as well as the bioactivity of different polarity of organic solvents of leaf and stembark extracts of Trichilia heudelotii (Meliaceae), was investigated against the field-to-store insect pest Callosobruchus maculatus in laboratory bioassay. The non-polar (hexane) and polar (ethanol) extracts [0.0 (control), 0.5, 1.0 and 1.5 ml] of the leaf and stem bark were added to 100 g of cowpea. The following parameters of the cowpea
weevil life cycle were analysed at the various concentrations: adult mortality, oviposition rate, number of larvae and pupae, and emergence of first filial progeny. The phytochemical screening revealed the presence of flavonoids, terpenoids, alkaloids, saponins in both the non-polar and polar extracts. Furthermore, the various treatments used were significantly (p< 0.05) effective in controlling C. maculatus from 1 and also
30 days after treatment (DAT) for both the non-polar and polar extracts when compared to the control. However, the most effective treatment was observed with the polar (EtOH) stem bark extract at 1.5 ml, which caused more mortalities and fewer emergence of the insect. Our findings suggest that the non-polar and polar leaf and stem bark of T. heudelotii extracts could serve as a sustainable and potential alternative to synthetic
chemicals in pest control
Potential Application of Hippophae Rhamnoides in Wheat Bread Production
No full textSea buckthorn (Hippophae rhamnoides) berries are well known for their content in bioactive compounds, high acidity, bright yellow color, pleasant taste and odor, thus their addition in a basic food such as bread could be an opportunity for modern food producers. The aim of the present research was to investigate the characteristics and the effects of the berry’ flour added in wheat bread (in concentration of 1%, 3% and 5%) on sensory, physicochemical and antioxidant properties, and also bread shelf life. Berry flour contained total polyphenols—1467 mg gallic acid equivalents (GAE)/100 g, of which flavonoids—555 mg GAE/100 g, cinnamic acids—425 mg caffeic acid equivalents (CAE)/100 g, flavonols—668 mg quercetin equivalents (QE)/100 g. The main identified phenolics were catechin, hyperoside, chlorogenic acid, cis- and trans-resveratrol, ferulic and protocatechuic acids, procyanidins B1 and B2, epicatechin, gallic acid, quercetin, p- and m-hydroxybenzoic acids. The antioxidant activity was 7.64 mmol TE/100 g, and carotenoids content 34.93 ± 1.3 mg/100 g. The addition of berry flour increased the antioxidant activity of bread and the shelf life up to 120 h by inhibiting the development of rope spoilage. The obtained results recommend the addition of 1% Hippophae rhamnoides berry flour in wheat bread, in order to obtain a product enriched in health-promoting biomolecules, with better sensorial and antioxidant properties and longer shelf life
Fermentative volatilome modulation of Muscat Ottonel wines by using yeast starter cultures
No full textExpert winemakers demand an objective methodology based on the volatile metabolome that provides a scientific basis for technology enhancements. In this study, thirty-seven volatile metabolites are quantified in nine wines: one obtained by spontaneous fermentation and eight by using pure starter cultures of eight different Saccharomyces cerevisiae yeast strains. By subjecting the data matrices to statistical analyses, we established six groups among the nine wines by ten key volatiles, five for the eight yeasts and one for the control wine. The odor activity values (OAV) for the 37 quantified volatiles were grouped in six odorant series and subjected to a Multiple Variable Analysis to allow an objective and easy to understand foot-print for each wine. The scores obtained by an organoleptic evaluation of the same descriptors used for the odorant series generate a sensory footprint and a significant linear relationship among the fruity organoleptic scores and the fruity OAVs. These results evidence a great similarity among the volatilome of some yeast strains when fermenting Muscat Ottonel grape musts and establish an objective way to help winemakers make yeasts selections
Anatomical peculiarities of the broad-snouted caiman’s limb bones (Caiman latirostris)
No full textThe aim of the study was the highlight of the specific characters of the limb bones in broad-snouted caiman,
and for that, the investigations were conducted on the bones which were collected from a dead broad-snouted caiman
that belonged to Bârlad Zoo. It was a male caiman, 24 years old. For the analysis, the bones were prepared by boiling
and cleaning. It was noticed the particular conformation of the girdles, in case of the thoracic one, the scapula and the
coracoid bone being almost similar developed, and both of them form the glenoid cavity to joint with humerus. It exist
also an elongated interclavicular bone. The humerus is curved, ulna is more massive than the radius, between them
existing a large radio-ulnar arcade, these aspects being similar to birds. There are 5 carpal bones, 3 in the proximal
row, and 2 in the distal one, the radial carpal bone being merged with the intermediate one, resulting the most developed
carpal bone. The thoracic metapodium includes 5 metacarpal bones, the 5th one being more reduced. The ilium is dorsally
placed to ischium, the two bones participating to form the acetabular cavity (foramen). The pubis, more reduced, is
cranially placed to ischium with which it articulates. The femur is very curved, and caudo-medially is highlighted the 4th
trochanter. The fibula is well developed, but the tibia is more massive, and between them is a large interosseous space.
The pelvic basipodium includes the calcaneum and astragalus, well developed, in the proximal row and two bones in the
distal row. The 5th metatarsal bone is rudimentary, the others being well developed. The acropodium includes 5 digits
for the thoracic limb and 4 in the pelvic one, the number of the phalanges having one more than the number of the digit,
except the 5th digit of the thoracic limb. The conformation of the limb caiman bones is generally similar to other
crocodiles
Volatilome fingerprint of red wines aged with chips or staves: Influence of the aging time and toasting degree
No full textThe influence on aroma compounds chips or staves and toasting degree have been analyzed in red wines aged for two periods of time. Ethyl propanoate, ethyl butanoate, ethyl octanoate, ethyl acetate, isoamyl acetate, isobutanol, 2-methyl-1-butanol, 2-phenylethanol, E-2-hexenol, octanal, nonanal, decanal, γ-nonalactone, furfural, 5-methylfurfural, 2-methoxy-4-vinylphenol and cis-whiskey lactone were the compounds that contribute the most to the aroma series profile. By means of principal components analysis, esters were related to the aging time; cis-whiskey lactone with the type of wood pieces and octanal, 5-methyl furfural and cis-whiskey lactone with the toasting degree. Star plot show that woody aroma compounds are dominant in wines aged with low toasting degree oak pieces, whereas medium plus toasted pieces increased the concentration of aroma compounds with fruity aroma descriptors. Wines with prominent fruity or woody aromas can be obtained depending upon the degree of toasting of wood pieces used for aging
Evidenţa principalilor agenţi patogeni şi dăunători ai viţei de vie şi controlul fitosanitar al acestora în condiţiile climatice ale anului 2019
No full textThe careful monitoring of vineyards plays a particularly important role in creating forecasts and warnings to help combat the main pathogens and pests. Mainvine diseases such as downy mildew, powdery mildew and gray rot can cause significant production losses if not combated according to well-established phytosanitary programs. On the other hand, their irrational control can lead to the emergence of phytotoxicity phenomena, or forms of resistance to pests. The present paper aims to present the evolution of the main viticultural diseases that appeared in the SCDVV Iaşi vineyards, in the climatic conditions of 2019