Vanilla Resinoid

#### Vanilla "Resinoid". The hydrocarbon (or other volatile solvent) extracts of vanilla are often called **"Resinoid",**** ****"Resin", "Resinoine"**, or the like, but they are actually more closely related to **Oleoresins **or **Concrètes **from a raw material and processing point of view. They do contain some resinous matter, but they are viscous liquids, pourable at room temperature, and they are derived from formerly live plant matter, not from a resinous exudation. The amount of steam-distillable matter in the extract is negligible. Thus, it would not even be correct to use the term **Oleoresin**** **which, however, is the most common. For solvents, benzene, petroleum ether, acetone, trichloro ethylene, dichloromethane, etc. may be used. Acetone will dissolve water from the moist fruits, and this fact makes acetone a troublesome solvent. The same goes for methyl alcohol, isopropyl alcohol or other "hydrophilic" solvents. The yield of "oleoresin" with the above solvents is considerably lower than the yield by ethyl alcohol extraction. Furthermore, the aromatic properties of hydrocarbon vanilla extracts are generally much poorer than those of alcohol extracts. **Vanilla "Oleoresin" **(resinoid, concrète) is usually a viscous, dark brown liquid with a sweet and vanilla-like odor, but without the rich tobacco- like extract note, without the animal undertone, and less rich in body than the alcoholic extracts. The hydrocarbon extracts are oil- soluble and miscible with most perfume materials, but not with alcohol, tinctures, glycerine, propylene glycol, etc. They are accordingly limited to use in preparations where alcohol, tinctures, etc. are not present, and they cannot be used in perfume bases intended for lotions, colognes or other alcoholic dilutions. For flavors, the "oleoresins" have the advantage of being oil-soluble, an ability sometimes requested in flavor preparations. Generally speaking, **Vanilla**** ****"Oleoresins"**** **are less important than the alcoholic and hydroalcoholic extracts of vanilla (see also **Vanilla Extracts**).