Headspace technology is a technique developed in the 1980s to elucidate the odor compounds present in the air surrounding various objects. Usually the objects of interest are odoriferous objects such as plants, flowers and foods. Similar techniques are also used to analyze the interesting scents of locations and environments such as tea shops and saw mills. After the data is analyzed, the scents can then be recreated by a

perfumer A perfumer is an expert on creating perfume compositions, sometimes referred to affectionately as a ''nose'' (French: ''nez'') due to their fine sense of smell and skill in producing olfactory compositions. The perfumer is effectively an artist wh ...

. One of the early pioneers of this technology includes

Roman Kaiser Roman Kaiser (born in Kirchberg SG on 15 July 1945) is a Swiss fragrance chemist. Since 1968 he has been working at Givaudan, the world's largest company in the flavour and fragrance industry, where he analyzes and reconstitutes natural scents ...

who used it to measure and characterize the scents of tropical rainforest. Headspace techniques have since been used extensively to sample

in vivo Studies that are ''in vivo'' (Latin for "within the living"; often not italicized in English) are those in which the effects of various biological entities are tested on whole, living organisms or cells, usually animals, including humans, and p ...

floral headspace of a large variety of numerous taxa and their aromatic compounds such as

fatty acid In chemistry, particularly in biochemistry, a fatty acid is a carboxylic acid with an aliphatic chain, which is either saturated or unsaturated. Most naturally occurring fatty acids have an unbranched chain of an even number of carbon atoms, f ...

derivatives (

aldehyde In organic chemistry, an aldehyde () is an organic compound containing a functional group with the structure . The functional group itself (without the "R" side chain) can be referred to as an aldehyde but can also be classified as a formyl gro ...

alcohol Alcohol most commonly refers to: * Alcohol (chemistry), an organic compound in which a hydroxyl group is bound to a carbon atom * Alcohol (drug), an intoxicant found in alcoholic drinks Alcohol may also refer to: Chemicals * Ethanol, one of sev ...

s and

ketone In organic chemistry, a ketone is a functional group with the structure R–C(=O)–R', where R and R' can be a variety of carbon-containing substituents. Ketones contain a carbonyl group –C(=O)– (which contains a carbon-oxygen double b ...

s),

benzenoid In organic chemistry, benzenoids are a class of organic compounds with at least one benzene ring. These compounds have increased stability due resonance in the benzene rings. Most aromatic hydrocarbons are benzenoid. Notable counterexamples are cy ...

s and

isoprenoids The terpenoids, also known as isoprenoids, are a class of naturally occurring organic chemicals derived from the 5-carbon compound isoprene and its derivatives called terpenes, diterpenes, etc. While sometimes used interchangeably with "terpenes" ...

. Braja D. Mookherjee was among the earliest pioneers of this technique. It was his mission, through the use of headspace technology, to characterize the perceived change a flower’s scent undergoes after it is picked. After successfully capturing the scents, he and his team went on to further study and document these changes in fruits, herbs and other botanicals. This endeavor led way to Living Flower™ Technology, IFF’s brand name or technique for headspace analysis. Dr. Mookherjee claimed this technology would “revolutionize the fragrance industry” by bringing the scents of living flowers to the perfumers pallet.

Equipment

The headspace equipment involves a hollow dome or sphere-like objects which forms an airtight seal and surrounds the objects of interest. Inert gases are passed into the space containing the object or a vacuum is established such that the odor compounds are removed from the headspace. These compounds are in turn captured using a variety of techniques, among them cold surfaces, solvent traps, and adsorbent materials, with the latter techniques capable of longer periods of collection. The samples can then be analyzed using techniques such as

gas chromatography Gas chromatography (GC) is a common type of chromatography used in analytical chemistry for separating and analyzing compounds that can be vaporized without decomposition. Typical uses of GC include testing the purity of a particular substanc ...

mass spectrometry Mass spectrometry (MS) is an analytical technique that is used to measure the mass-to-charge ratio of ions. The results are presented as a '' mass spectrum'', a plot of intensity as a function of the mass-to-charge ratio. Mass spectrometry is u ...

, or Carbon-13

NMR Nuclear magnetic resonance (NMR) is a physical phenomenon in which nuclei in a strong constant magnetic field are perturbed by a weak oscillating magnetic field (in the near field) and respond by producing an electromagnetic signal with ...

. Several companies have patented similar headspace technologies: *Aromascope ( Takasago) *Jungle Essence ( Mane) *NaturePrint (

Firmenich Firmenich SA is a private Swiss company in the fragrance and flavor business. It is the largest privately owned company in the field and ranks number two worldwide. Firmenich has created perfumes for over 125 years and produced a number of well-k ...

) *ScentTrek (

Givaudan Givaudan () is a Swiss multinational manufacturer of flavours, fragrances and active cosmetic ingredients. As of 2008, it is the world's largest company in the flavour and fragrance industries. Overview The company's scents and flavours are de ...

) *Living Flower ( IFF)

References

{{Reflist, 2 Perfumery Flavor technology