Terpeneless Sweet Orange Oil

#### Orange Oil, Sweet, terpeneless and sesquiterpeneless. Various grades of terpeneless and sesquiterpeneless, wax-free sweet orange oils are obtained from good-quality expressed sweet orange oils. The method of production is similar to that of terpeneless lemon oil (see **Lemon Oil, Concentrated**), with the main difference being that sweet orange oil yields a substantial amount of solid waxes when it is concentrated. Lemon oil contains few or no waxes, but has a certain amount of high-boiling sesquiterpenes, etc. **Terpeneless Sweet Orange Oil **(so-called commercially) is often only 15 times concentrated (by weight), and thus still contains substantial amounts of terpenes. But, when wax-free, it is fairly soluble in 70% alcohol. It is a pale yellow to almost colorless, mobile liquid of very pleasant, fresh-sweet odor which keeps the typical notes of orange peel. A totally terpeneless, sesquiterpeneless and wax-free sweet orange oil is a yellow liquid with a very sweet, but strongly aldehydic-sharp odor, not immediately reminiscent of orange peel. The oil which seems to serve all purposes best is a wax-free, partially monoterpeneless, totally sesquiterpeneless oil at about six to ten times concentration by weight of the natural oil. This oil will have fair solubility, fresh aroma, good keeping qualities and about three to five times the flavor strength of the natural oil. It is almost colorless when prepared as described under **Lemon Oil, Concentrated **(see monograph). The orange waxes, a by-product of the process of concentrating the sweet orange oil, are often washed and dried to be used in certain perfume compositions. They contain small amounts of odorous sesquiterpene derivatives, etc., and they lend great fixative power to various floral bases, e.g. jasmin, gardenia, tuberose, etc. Orange waxes can not be used in perfumes which must be soluble in low-proof alcohol. **Terpeneless, Sesquiterpeneless Sweet Orange Oil **is often produced by the flavor house needing the oil since there are countless qualities on the market, and only few of the commercially available oils are worthwhile using in flavors. For use in liqueurs and finer candies, for high-grade flavors in carbonated beverages, it is of paramount importance to keep a uniform quality. The public is particularly sensitive to any change in the "big" flavors such as the popular orange, peppermint, vanilla, etc. The Minimum Perceptible for the truly terpeneless, sesquiterpeneless oil is about 0.0002 to 0.0004 mg%. Use level 0.01 to 0.10 mg%. **Naardenized Sweet Orange Oil **is an oil that has been deterpenized by the well-known countercurrent extraction process with selective solvents. It is an "absolute" of sweet orange oil, the highest possible concentrate of the oxygenated components of the oil. Several artificial terpeneless sesquiterpeneless sweet orange oils are commercially available. Most of them suffer from a pronounced aldehydic note (decanal or nonanal) which completely ruins the flavor effect. Several "branched-chain" aliphatic aldehydes have been developed for use in concentrated orange flavors. Some of these aldehydes have pleasant and natural flavor notes and they are distinguished by their unusual diffusiveness and power. The byproducts from the deterpenization of sweet orange oil are all used in perfumery for reproduction of various citrus oils, for masking odors, in industrial perfumes, etc.