Specific features of an immortal (Helichrisum italicum L.) grown on the territory of Bulgaria
Keywords:
cultivation; distillation; Helichrisum italicum; specific featuresAbstract
The aim of the study is to conduct studies related to the determination of the content of essential oil in the individual parts of the plants and the dynamics of accumulation of representatives of the species Helichrysum italicum L. in the conditions of the Kazanlak field. The values of the morphological indicators in annual and two-year plants are traced, some productive qualities are obtained. By water and steam distillation is determined the percentage of essential oil in 3 origins - №1 from Bosnia and Herzegovina, №2 from Italy and №3 from France. The Institute of Roses also made first studies to determine the essential oil content of the individual parts of the plant. It has been found that in a blooming phase all origins synthesize in their inflorescences essential oil in the range of 0.05 to 0.1%. Vegetative parts of plants – leaves and stems are characterized by a relatively high content of essential oil - 0.11%. Relatively high is also the content in the stems of the flowers – by about 0.02% less than in the inflorescences. The dynamics of the accumulation of essential oil through ontogenesis in the origins №1 and №3 were followed. During the first 15 minutes 46% of total oil is released, up to 30 minutes 23%, to 60-29%. During the first hour of distillation 98% of the total amount of oil contained in the raw material is recovered.
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