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The aim of this study was to develop a rapid and relatively simple protocol for the simultaneous quantitative determination of the main volatile compounds acetoin and diacetyl found in yogurt. Both these substances are the common flavor components in cultured dairy products. Acetoin/diacetyl determination is important because its concentrations represent criteria for the quality appreciation of the lactic starter cultures. This proposed method employs the reactions of acetoin and diacetyl with 1-naphthol and creat...

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...

This study aimed to investigate: i) the chemical composition and ii) the antimicrobial properties of the essential oil isolated from Lavandula angustifolia ?Sevtopolis? cultivated in western Romania. The essential oil, obtained by steam distillation, was evaluated by GC/MS. The inhibitory effects of Lavandula angustifolia ?Sevtopolis? essential oil were tested using the Kirby-Bauer agar disc diffusion method against five common food-related bacteria: Staphylococcus aureus (ATCC 25923), Pseudomonas aeruginosa (ATCC...

Industry, pollute environments (air, water, soil), and bring damage to the health, both to the people and all living beings. In areas where oil and gas development is prevalent, air, water and soil resources can become contaminated with oil and gas wastes and by products. The pollutants emitted by the oil and gas industry, may bring damage immediate or long-term, to the environment. Mining industry and the oil processing, affects the environment through gaseous and liquid hydrocarbons. All products resulting from ...

In the present work for the first time in the world practice 430322 occultations of stars by the Moon are analyzed. The relevance of the work is that the accuracy analysis of stars' proper motion in modern star catalogues can only be conducted using either observations of small planets or occultations, since only those observations are longterm and homogenous in time. When making the occultation database a comparative analysis has been used to study types and accuracy of occultation. For photoelectric observations...