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Type: Article

Section: Flavor > Ingredients

Geraniol

Geraniol is one of the most organoleptically complicated aroma chemicals found on the market today and shows its complex nature by tbe number of geraniol grades offered. The product we refer to as “geraniol” is in reality a mixture of two cis-trans isomers properly named geraniol (trans) and nerol (cis).

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Flavor Bites: Geraniol

The rose character of geraniol is very bright and fragrant but it also possesses considerable depth, which is especially helpful in flavors.

Progress In Essential Oils

Geranium Oil In 1996, Zang et al. analyzed geranium oil of Chinese origin. Although they found that some of the major constituents were citronellol (24.73%), geraniol (8.79%) and linalool (4.16%), the authors misidentified many of the other constituents; however, it is included in this review for completeness. Möllenbeck et al. (1997) analyzed a sample of geranium oil produced in Madagascar. The oil composition was found to be as follows:

Progress in Essential Oils

Lawrence discusses the composition of bay oil from Benin and Cuba. He also discusses the composition of western red cedar leaf oil (Thuja plicata L.) from Canada, and ambrette seed oil (Abelmoschus moschatus Medik.) from Vietnam.

Chemical technology as a source of synthetic fragrance and flavor materials

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 Drying of Laurel Leaves

Laurel leaves are collected from Laurus nobilis L., which is an evergreen tree or shrub of the Lauraceae family and grows wild in Greece. In ancient Greece and Rome, its leaves and branchlets were used as garlands to be bestowed upon heroes on festive occasions. In modern times annually more than 250,000 kg of dried leaves (sweet bay) are marketed in U. S.A., U.S.S.R. and other countries as a flavoring material in culinary preparations like soups, fish, and ragouts.

Progress in Essential Oils

Geranium Oil A survey of the early literature reveals that methyl mercaptan was found as a trace component in geranium oil (Peyron 1961). Rajeswara Rao et al. (1992) determined the effect of different fertilization practices on the major constituents of geranium oil produced in Hyderabad (India).

A New Method of Separation of Citral from Lemongrass Oil

Although many methods are known for the separation of citral from lemongrass (Cymbopogen flexuosus) oil, like fractional distillation, adduct formation and regeneration, the purity and the yield of citral as separated are not satisfactory. A new method for separation of citral in pure form and in near quantitative yield uses the column chromatographic technique. This method may also be adapted for large scale separation of citral and hence can be of commercial importance.

Nerol is well known for its floral notes for citrus and fruit flavors.

Flavor Bites: Nerol

Learn about the diverse range of applications for nerol.

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Progress in Essential Oils: Cubeb Oil

This month's column discusses the chemical composition of cubeb oil derived from Piper cubeba L.

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Progress in Essential Oils: Grapefruit Oil

This month's issues discusses the chemical composition of grapefruit oil.

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Progress in Essential Oils: Spanish Marjoram Oil

This month's column discusses the chemical composition of Spanish marjoram oil.

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Progress in Essential Oils:Thymol-rich Thymus vulgaris oils – Part 2

We take a closer look at the various constituents of thymol-rich thyme oils hailing from various parts of Iran, as well as Turkey, Czech Republic, Spain and Brazil.

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Progress in Essential Oils: Spanish Oregano Oil

This month's column discusses the chemical composition of Spanish oregano oil.

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Progress in Essential Oils: Lemon Verbena Oil

This month's column discusses the chemical composition of lemon verbena oil.

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Progress in Essential Oils: Thymol-rich Thymus vulgaris oils – Part 1

A derivative of thyme oil, thymol contains antibacterial, anti-inflammatory and antioxidant properties, among others. Part 1 discusses the various constituents of thymol-rich thyme oils.

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Progress in Essential Oils: Juniper Berry Oil

This month's column discusses the chemical composition of juniper berry oil. Some of its common uses include seasoning mixtures in the food industry as flavorings in marinades for meat and fish, as well as in beverages such as tea, beer and brandy

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Progress in Essential Oils: Turmeric Oil, Part 1

Turmeric is well-known as the yellow, aromatic spice used in curry powder and numerous Asian culinary dishes. It is the rhizome of Curcuma longa L., a member of the ginger family. Part one of this two-part column compares the chemical compositions of turmeric oil with Curcuma aromatica.

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