Ittar Abi Ali al Sina, regarded as a noble Doctor who ever lived. He was among the first people to come with the technique of distillation of roses and other plant fragrances. Liquid perfumes used to be a mixture of oil and crushed herbs until his discovery where he first experimented with roses. The traditional Attar-makers also used petals which were ground into a strong blend. His popularity spread over other continents after he created Rosewater which was more delicate than the previous versions. He formulated at least 62 cardiac medicines out of which 40 were made from Attar. They include
Cannabis flower essential oil pollination; sex, age, and part of the plant; cultivation (indoor, outdoor etc.); harvest time and conditions; drying; and storage. For example, fresh buds from an Afghani variety yielded 0.29% essential oil. Drying and storage reduced the content from 0.29% to 0.20% after 1 week, and to 0.13% after 3 months. Monoterpenes showed a significantly greater loss than sesquiterpenes, but none of the major components completely disappeared in the drying process. About 1.3 L of essential oil per ton resulted from freshly harvested outdoor-grown hemp, corresponding to about 10 L/ha. The yield of nonpollinated ("sinsemilla") hemp at 18 L/ha was more