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There exists a problem of unbalanced nutrition in the modern world. Consumption of vegetables and fruits is mainly seasonal and they are not consumed by everyone in the daily diet in sufficient quantities to meet the daily requirement for nutrients. Snack products, including various bars, are becoming increasingly popular among the population of our country. Often there is an insufficient amount of vitamins and other micronutrients with such products that are so necessary to ensure the health of the human body. Insufficiency of these nutrients causes various diseases, the condition of the skin, hair, nails, and even mood worsens.The goal of the research was to determine the amount of vitamins in a bar made from sunflower seeds with the addition of plant materials – crushed dried tomato fruits.The objects of the study were a candy bar with the addition of rusk crumbs, containing 15% of dried tomatoes by weight of the finished product and a control sample – kozinak.Tests were carried out on a Dionex Ultimate 3000 chromatograph using reverse phase chromatography on a Luna C18 column. This device is used to measure the content of a wide range of components in samples of substances and materials, solutions, food products and other objects of analysis.It has been found that with the addition of a herbal additive and cracker crumbs to the recipe, the quanitative composition of vitamins A and E in the finished product increased compared to the control sample.The results of the research can be used in the development of new food recipes.

Background: Invasive alien species (IAS) are broadly distributed all over the world by disturbing or reducing the growth and development of native vegetation. Lantana camara is basically a noxious weed and have a potential to invade a region's indigenous vegetation. Even after knowing all its harmful effects, there has been a little research on various mechanisms followed by this plant to harm the plant species. Results: Random sampling was performed to take plant samples without any bias, to study various mechanisms carried out in plant species. Chemical fingerprinting of samples were then performed in various abiotic stress conditions (cold and hot) to study changes in L. camara under these stressful conditions in order to find the reason behind the invasiveness of this plant species. Stress indicator like malondialdehyde (MDA)/lipid peroxidation was also performed and increased lipid peroxidation during both extremities showed that plant is experiencing oxidative stress. ROS imaging was performed on the leaves of L. camara, which also showed rise in ROS staining during extreme conditions. Elevated peaks (major and minor) and detection of secondary metabolites like glycine betaine in chemical fingerprinting observed under stressful conditions showed that plant may produce some increased level of metabolites in stress conditions that might play a role in minimizing the oxidative stress that plant is facing. Conclusions: On the behalf of obtained results, it can be assumed that Lantana camara has the capability to survive in or tolerate extreme environmental abiotic stress conditions by producing or agglomerating various stress-reducing metabolites.

The paper is a detailed analysis of the devices used in measurements of hydrocarbon content on gas carriers during cargo tank gassing-up operations. The characteristics of the Riken Keiki GX-8000 portable gas detector used commonly on ships are described, the types of detection used in the device in relation to the detected gases are discussed, which made it possible to question the validity of using the detector for analysing the concentrations of large quantities of hydrocarbons on gas carriers. Also discussed is a device enabling such analyses to be carried out much more accurately – the Agilent 490 Micro GC chromatograph, which will substantially improve the process of cargo tank gassing-up.

Highlands are a new frontier to produce fine wines in the Southern region of Brazil (27º 12' 24" S, 51º 06' 96" W, 1211 m altitude) and has presented specific oenological characteristics with a good adaptation of some varieties, among them, Canaiolo nero. To characterize the wines of this region, during the 2012 and 2014 harvests the volatile compounds were determined through the MHS-SPME-GC-MS technique. The grapes were harvested, and samples analyzed in triplicate. The positive identification of the volatile compounds was performed by comparing the experimentally obtained mass spectrum and retention index with the reference spectra and retention indices available in the literature. Four consecutive extractions were used for quantitative evaluation to avoid a matrix effect. Odor activity value was calculated from the perception threshold for each evaluated compound. The mean soluble solids content was 21.55o Brix, and total acid content was 81.0 meq L-1; the mean weight of the clusters was 176 g, and the productivity was 2.2 tons per hectare (espalier – 1.5 m × 3.0 m). Thirty-one volatile compounds were identified and quantified in the analyzed samples. The major components were the aromatic alcohol 2-phenylethanol (38.364 µg L-1), and the esters diethyl succinate (6.357 µg L-1) and ethyl acetate (2.005 µg L-1); and the compound of class C6, 1-hexanol (3.2 µg L-1). Odor activity values showed the compounds that contribute the most to the aroma of the analyzed wines, highlighting ethyl isovalerate (OAV 394.38), ethyl hexanoate (OAV 9.22), ethyl cinnamate (OAV 8.62) ethyl isobutanoate (OAV 5.59), β-damascenone (OAV 2.44), hexanoic acid (OAV 4.03), octanoic acid (OAV 3.64) and isoamyl acetate (OAV 3.01). These results showed the aroma characteristics of Santa Catarina wines of the Canaiolo nero variety, especially fruity aromas of apple, green apple, strawberry, plum and banana; and floral aroma of violet and roses.