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BULLETIN OF SCIENTIFIC INFORMATION - NR.21 / 2011

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INCIDENCE OF GENETICS AND MOLECULAR BIOLOGY ON THE SENSORIAL PROFILE OF WINES. THE EMPHASIS OF THE TYPICAL VARIETAL PROFILE OF THE SAUVIGNON BLANC VARIETY BY THE SELECTION AND USE OF A YEAST
STRAIN WITH SUPERIOR BIOLOGICAL CHARACTERISTICS

Croitoru Constantin, Nicolae Ion, Mihăilă Daniela
Bioterra University of Bucharest
 
Abstract:
The metabolism of the yeast’s cell can be modified by genetic engineering in order to improve some of its oenological properties that have favourable effects on wines’ sensorial profile. The selection of some yeast strains which posses in their cells enzymes that free typical aroma grape variety starting from their precursors such as wines from Sauvignon blanc grape variety, represent one of the principal interests of biological sciences in oenology. Such a recently selected yeast strain was IPER R; its enzymatic cellular equipment is rich in carbonsulphurilase and alcoholacetiltransferase enzymes; the carbonsulphurilase transforms cysteine sulphur precursors (cysteine-3-MMP and cysteine-3-MH) into their principal varietals free aroma of the Sauvignon blanc grape variety (4-MMP and 3-MH); in its turn, alcoholacetiltransferase transforms the most simple aromae compound (3-MH) in its acetate (3-MHA) by endorsing the complexity and the typical olfactory of the resulted wine. In the performed comparative experiments we tested the strain IPER R ant the nutrient FERMOPLUS ENERGY GLU (FEG). The results have shown that the elaboration of some wines from the Sauvignon grape variety with a remarkable sensorial profile (by the increase of the smell intensity and of the fruity-floral character, accompanied by the emphasis of tasty sensations of freshness, oiliness, roundness and lengthiness) need the compulsory use of the IPER R yeast strain during the alcoholic fermentation (AF) of musts in association with a correspondent and compatible nutrient such as FEG.
 
Key words: sauvignon blanc variety, molecular biology, genetics, typical varietal profile.
 

BACTERIAL GENETIC MUTATIONS. THE CAUSE FOR XXI-ST CENTURY EPIDEMICS. PATHOGENIC ESCHERICHIA COLI

Cărădan Simona Laura, Atudosiei Nicole-Livia, Niculaie Liana
Bioterra University of Buchares
 
Abstract:
After birth, animal bodies progressively colonize a large number of microorganisms that are located on the body and various mucous membranes, especially the digestive tract and skin. Human and animal body collect a total of 10 cells of microorganisms (Dobzhanky 1974), grouped into two major categories: normal microbiota (associated with indigenous or native organisms) and foreign or alien microbiota with microorganisms from the external environment, some can be pathogenic. Escherichia coli can be classified in two categories, it is part of the normal microbiota of finding the body especially in the digestive tract, but at some point may come from external environment, with structural changes or genetic, in different ways (ingested, inhaler). Resistance of bacteria is relatively small when it comes through chemical or physical methods of sterilization, E. coli having an optimum temperature between 10-30 degrees C, the resistance between 5-50 degrees C is destroyed by disinfectants and antiseptics in normal concentrations,
genetically modified strains are not destroyed by antibiotics with broad spectrum of action. E. coli was discovered by Austrian scientist Escherich in 1886, researcher who gave the scientific names of bacteria. From measured by morphological, bacteria are rod shaped, Gram negative and it grows on ordinary culture media, this is the explanation of its spread in most animals organisms in natural environments.
 
Key words: bacteria, infection, genetic mutations.
 

INFLUENCE OF FERTILIZERS ON THE LEVEL AND QUALITY OF MAIZE

Coţianu Răzvan Daniel, Stăncila Ileana Geanina
Bioterra University of Bucharest
 
Abstract:
Maize is a nitrogen-intensive crop, the largest part of this element is absorbed into the first part of the vegetation, with maximum intensity to the formation of floral organs. Towards maturation of seed, 70% of nitrogen goes from bean leaves, but at this stage of culture needs this element for further enhancing photosynthesis and grain protein content. The many factors that influence the effectiveness of fertilizers creates difficulties in establishing dose more so, since some factors are more difficult to control and taken into account (climatic conditions), increases the production of fertilizers obtained by applying varying from one area to another.
 
Key words: fertilizers, effectiveness, climatic conditions
 

APITHERAPY WITH DRONE LARVA

Moraru Ionuţ
Pro Natura Company Bucharest
 
Abstract:
Beehive products represent a rich source of nutrients and principles necessary to the normal development, have great potential for hormonal rebalancing (may reduce discomfort associated with menopause, andropause, delayed puberty). Improves sexual dynamics and the resistance of the body and mind to physical and mental efforts. Supports natural defense of the organism, increasing the immune response.
 
Key words: Immunostimulator, antibiotic, antifungal, antiviral, hepatoprotective, antioxidant, increases sexual performance, drone larva.
 

GENERAL PRINCIPLES OF THE ENVIRONMENTAL COMMUNITY LAW

Trandafir Cornel, Olteanu Cristina Elena
Bioterra University of Bucharest
 
Abstract:
In the process of elaboration and application of community regulations on environment protection, a series of general principles have crystallized and are affirming, under different forms. Initially mentioned in the periodical action programs, they found the juridical expression in the provisions of art. 130 of the Treaty of Rome, introduced by the Sole Act in 1987, which conferred them a mandatory application. Thus, paragraph 2 of such article states that the Community’s action in the matter should be founded on three principles: preventive actions, correction of pollution at source and „polluter pays” principle. Certainly, it is not about new principles, as they have been defined in the second and third action program in the field of environment. Also, the same article established that the exigencies regarding environment protection are a component of the other policies of the Community. Such requirement marked a new stage in the development of environmental community law. The dimension of environment protection marks now, on a mandatory basis, all the community policies, together with the founding of a separate field.
 
Key words: pollutant pays principle, protection areas, regulations on environment protection
 

ORGANIC WINES. THE PROS AND CONS. LEGAL, TECHNOLOGICAL AND SENSORIAL ASPECTS. PERSPECTIVES AND LIMITS IN CONSUMER’S PREFERENCE VIEW

Croitoru Constantin, Nicolae Floarea, Atudosiei Livia-Nicole, Galan Catălin, Lazin Valentina
Bioterra University of Bucharest
 
Abstract:
The authors analyze the proposals on the opportunity of utilisation of some technological additives and of some oenological practices employed for organic wines’ elaboration. There are presented critical aspects regarding the use of SO2 and wine elaboration, clarification and stabilization products, as well as some aspects regarding the necessary composition’s enrichment (acidification and sugar content) in some vintage years. This paper presents authors’ opinions on oenological products which are not allowed in organic wines, the particular case of allergenic products and SO2, and oenological practices (acidification, enrichment and other treatments) that may be forbidden for organic wines. There are highlighted aspects regarding sensorial quality of organic wines and their profile in
consumers’ preferred perspective.
 
Key words: organic wines, sensorial aspects, SO2 equivalent, critical analysis