The article presents the results of the extraction of oil from safflower seeds and the study of its acid composition. Methyl esters of fatty acids were analyzed by gas chromatography on an Agilent 6890 N instrument with a flame ionization detector, and the qualitative and quantitative composition of fatty acids in seed oil of two samples of Carthamus tinctorius L. was studied.
The article describes the results of the spread of invasive pest insects that seriously affect the vegetable-police agrocenoses across Central Fergana. During the research, it was found that Colorado potato beetle (Leptinotarsa decemlineata), tomato moth (Tuta absoluta), mulberry moth (Glyphodes pyloalis) and onion fly (Delia platura) entered as adventive species and became dominant in the valley.
Экстракцию проводили 0,2 н. раствором гидроксида натрия в соотношении 1:10 на магнитной мешалке. Клеточный дебрис удаляли центрифугированием при 6000 об/мин в течение 30 мин на охлаждаемой центрифуге РС-6. Полученный прозрачный супернатант (осажденный раствор) осаждали сульфатом аммония при перемешивании на магнитной мешалке. Полученный экстракт оставляли в холодильнике на 16 часов для образования белка.
For environmental education and environmental education in Chemistry, some environmental issues should be used appropriately. They serve as an excellent tool in organizing classes for future chemistry teachers.
The article reveals the chemical composition of turnip: carbohydrates (glucose, fructose), pectins, vitamins. The products of polysaccharide hydrolysis were studied by paper chromatography
The quantitative content of 32 macro and microelements was determined by neutron activation analysis, as well as the amino acid composition was studied by the analysis of FTK-derivaties of amino acids by HPLC method in the leaves and kernels of seeds Prunus persica var.nectarina growing in Uzbekistan.
This article presents research data on meiosis-induced allohexaploids. Based on the obtained data and other studies, the issue of the origin of tetraploid cotton is discussed.
In the article, under the influence of anthropogenic and man-made factors, heavy metals, nitrite and fluorine contained in mineral fertilizers accumulate in the soil under the main driving layer. However, it was noted that there are no modern innovative and information communication technologies that allow assessing the actual sanitary-ecological condition of the country. More than a hundred substances and chemical compounds that fall into the soil through irrigation over the years eventually fall into the soil and degrade it.