ABSTRACT
Encapsulation systems are the most common fragrance delivery systems. They protect the fragrance, enhancing its stability by reducing susceptibility to oxidation, hydrolysis, chemical interaction and evaporation. Fragrance raw materials can be divided into either natural or synthetic ingredients. Plants are by far the most used natural sources for natural fragrance ingredients. Some essential oils that are highly used by the fragrance industry are produced only in certain parts of the world limiting their accessibility and consequently their availability. As fragrances are complex mixtures composed mainly of different aromatic ingredients, stabilizers and solvents, the analysis and study of individual component’s properties can help inform the characteristics of the final fragrance. Fragrances are expected to evoke emotions. Research groups in neurophysiology, psychology and related areas investigate how these emotions can be measured and, in association with industry researchers, how these emotions can be activated by certain accords or fragrance hedonics.
