Lemon Petitgrain, Terpeneless

#### Lemon Petitgrain, terpeneless. For flavoring purposes and for certain perfumery purposes, there are definite advantages to the removal of all or most of the monoterpenes and sesquiterpenes from **Lemon**** ****Petitgrain**** ****Oil**** **(see previous monograph). The best starting material is the Guinea oil which is by far the richest in oxygenated constituents (important odor and flavor materials). A very cautious fractionated distillation under vacuum, preferably lower than 1 mm. Hg.-pressure in an all-glass still, may produce a satisfactory oil. It is usually necessary to interrupt the distillation when 35 to 45% by weight of the oil has distilled at a maximum still-head temperature of 30° C. (and not more than 50° C. pot temperature). The residue in the pot is then "washed" (extracted) with 70% ethyl alcohol (in distilled water) whereby the oxygenated components of the concentrated oil are dissolved and the sesquiterpenes are left undissolved. There are no waxes. The alcoholic solution is evaporated, and care is taken to see that the water does not carry over some of the aromatic materials. When alcohol and water are removed, the residue is **Lemon Petitgrain, Terpeneless (and Sesquiterpeneless).** This oil is an excellent flavor material, and does wonders when minute additions are made to a raspberry flavor. It has an unequalled freshness and an enormously rich sweetness; its power will surprise most "first-users". To introduce just that touch of freshness (without being perceptible per Se) which is so often needed in artificial fruit flavors, this oil is an excellent material. The suggested use level is accordingly just a trifle above the **Minimum Perceptible**** **which is approximately 0.005 to 0.020 mg%. In perfumes, the **Terpeneless**** ****Lemon**** ****Petitgrain**** ****Oil**** **will show its tenacity in high-class colognes, and it blends well with neroli oil, sage clary, bergamot, citronellol, cumin ketone, cyclamal, geraniol, heliotropine, hydroxycitronellal (eliminates the sickly-sweet chemical notes), linalool, linalyl acetate, etc. It gives fine topnote effects in muguet, rose, lilac, gardenia, etc. **Terpeneless**** ****Lemon**** ****Petitgrain**** ****Oil**** **is not commercially available as such, but it is produced by the individual users who can calculate on an average yield of 45 to 55% based upon genuine Guinea oils.