Raw Materials Sponsored by
A short symposium was held by the Essential Oil Association on the problems affecting manufacturers and their supplies of both natural and synthetic raw materials. Four reports were given on various aspects of this subject and are summarized below:
Our subject is the future supplies of natural raw materials for the essential oil industry. We might divide these raw materials roughly into three groups: 1) those that serve as raw materials in the production of isolates, competing head-on with synthetics and including citronella, lemongrass, menthol, and clove leaf; 2) those that can be replaced by synthetic oils, such as anis, rose, fir needle, geranium, citrus oils, sandalwood mint oils, and floral extractives; 3) those that are not threatened by replacements–at least for the present– including cedarwood, eucalyptus, guaiaewood, lavandin, ocotea, petitgrain, patchouli, vetivert, and ylang.
Methods leading to (–)-, (+)-, and (±)-carvone have been reviewed, The technical production of (–)-carvone is based on the widely available (+)-limonene; the most favored route is that epitomized in Chart 1. Though the steps involved are simple, their exploitation is a wellguarded secret, There is no similar commercialscale production of (+)-carvone because the basic materials for its synthesis are not as readily available. However, sooner or later the rising demand for this ketone will ensure that it, too, will be produced synthetically.
The transformation of Norda is nearly complete, and it is now poised to challenge the very largest international leaders in the flavor and fragrance industry.
This new plant is in continuous production, producing only l-menthol. The total employment at this plant is 49, with 32 people in production. These 32 operate the plant 24 hours a day, seven days a week. The process is a very intricate and complicated series of completely continuous operations combined with automatic sequencing batch processes.
The very interesting and unique combination of a strong historical position in aroma chemicals together with a very old and top quality processor of natural materials gives the Naarden organization an unparalleled range of products to use internally, as well as to market to the worldwide industry.
Only in the past few decades has the chemical industry begun to recognize turpentine as a wonderfully versatile raw material for enhancing product salability, and sometimes adding expensive and exotic effects. At present, chemical uses consume about ten times as much turpentine as all other uses combined.
Many other examples could be cited but those discussed above serve to make the point that we are part of the dynamic chemical industry where technological obsolescence is built into each new development. The resultant competitive pressure will keep our segment of the industry young and vigorous.
The recent trend toward natural ingredients in foods should increase the use of natural citrus oils and aqueous essences, They provide a wide range of flavors and solubility characteristics for use in foods, cosmetics, and cleansers and can he declared as natural ingredients on the label.
A new commercial method for the production of citrus essential oils in Florida.