Ojectives of the work. Biodiversity of plant resources, scarce information on bioactive compounds and their properties in many species, including those growing in Lithuania, as well as increasing demand for naturalness of food were the main motivation aspects of the present study.

The quality of asphalt depends on quality and type of components. The e main characteristic of asphalt is the composition – binder content and aggregate graduation. There are developed many methods for the evaluation of asphalt content. This work analyzes the methods of asphalt content determination. Also there are compared to methods: solvent extraction and ignition method. For the evaluation of these methods the researches of 50 samples have been made. The samples were taken from the asphalt pavement and others were made in laboratory. When results of research were analyzed by principles of statistics. The conclusions and recommendations are presented at the end of the research paper.

1. GENERAL CHARACTERICTICS OF THE WORK First drugs were of herbal origin. Today, preparations of this kind are highly appreciated. Social and economic changes have been influencing public health. The rhythm of life and nervous strain have negative effects on the human body. Many ailments are caused by emotional variations. Illnesses of the nervous system and related disorders of the digestive system raise an important concern nowadays. The potential of phytopreparations in the treatment of such ailments is capable of completing the gaps of their treatment. Phytopreparations can be used for treatment for an extensive period of time. Critics of phytotherapy can argue that existence of modern synthetic medicine supersedes phytopreparations. It must be noted, though, that this medicine is effective and easily digested. It does not compete with, but only complements pharmacotherapy. Phytopreparations are often used in the treatment of chronic disorders of the digestive system such as higher sensitivity, atony, ailments of bile bladder and duct. Functional disorders of intestine cause diarrhea, spasmodic pains, stomach rumble, and loose bowels. In case of functional stomach and intestine disorders, treatment with sedative and peristalsis regulating medicine is applied in addition to a rational daily routine and diet. Digestive disorders are well eliminated with the help of herbal drugs. At present, medicinal herbs and preparations from herbal materials have been receiving a lot of... [to full text]