Natural perfumes are divided into animal spices and plant spices: there are four kinds of animal natural spices: musk, civet, beaver and ambergris;
Plant natural flavor is an organic mixture extracted from flowers, leaves, branches, stems and fruits of aromatic plants. Synthetic fragrances include semi synthetic fragrances and fully synthetic fragrances: fragrances obtained by chemical reaction of a natural component are called semi synthetic fragrances, and fragrances synthesized by basic chemical raw materials are called fully synthetic fragrances. According to the classification of functional groups, synthetic fragrances can be divided into ether fragrances (diphenyl ether, anisole, etc.), aldehyde ketone fragrances (Muscone, cyclopentanone, etc.), lactone fragrances (isoamyl acetate, amyl butyrate, etc.), alcohol fragrances (fatty alcohol, aromatic alcohol, terpene alcohol, etc.).
Early flavors can only be prepared
with aroma chemicals. After the emergence of synthetic flavors, the flavors can almost deploy all kinds of flavors to satisfy the needs of all walks of life. For industry workers and consumers, they are most concerned about the stability and safety of spices. Natural spices are not necessarily safe, and synthetic spices are not necessarily unsafe. The stability of flavor and fragrance is mainly manifested in two aspects: first, their stability on aroma or flavor; Second, the stability of physical and chemical properties of itself or products in process; Safety refers to whether there is oral toxicity, skin toxicity, irritation to skin and eyes, skin allergy, photosensitive poisoning and skin photosensitization.
As far as spices are concerned, natural spices are a complex mixture. Affected by factors such as origin and weather, they are not easy to be stable in composition and aroma. They often contain a variety of compounds. The aroma components are extremely complex. With the current level of chemistry and biotechnology, it is difficult to fully and accurately analyze and grasp their aroma components, The impact on the human body is not easy to understand, and some of the risks are actually unknown to us; The composition of synthetic spices is clear, so relevant biological experiments can be carried out to achieve safe use, and the aroma is stable. The added product aroma can also be stable, which brings us convenience in use.
As for residual solvents, synthetic flavors are the same as natural flavors. Natural flavors also need solvents in the extraction process. In the synthesis process of synthetic perfume, the solvent can be controlled within a safe range by means of solvent selection and removal.
Most natural spices and fragrances are more expensive than synthetic spices and fragrances, but this is not directly related to safety. Some synthetic flavors are even more expensive than natural spices. People think that natural is better, sometimes because the natural aroma will make people happier. Some trace components in natural spices may bring subtle differences to the experimenter. It is not natural or good, but synthetic is not good. As long as it is used within the scope of laws, regulations and standards, it is safe. Scientifically speaking,
aroma chemicals have strong controllability and more safety. At the present stage, they are more suitable for the public.
