Transcript Part 2 Odor Structure - Waste Management Engineering

Douglas W. Hamilton
Waste Management Specialist
Biosystems and Agricultural Engineering
Making Sense of Smells
A Guide for Understanding Farmstead Odors
Part 2: Odor Structure
Odors need not be so
mysterious …
1. They have structure
2. They are measurable
Odors need not be so
mysterious …
1. They have structure
Perfume Structure
Perfume Fragrances
are mixtures of Notes
Rose de Grasse is
characterized by a honey
note, resembling very
slightly a delicate peppery
note, shading off into a light
tonality of natural carnation
… it is possible to perceive
a slightly green odor …
Billot, M. and F.V. Wells. Perfumery Technology:
Art, Science, Industry. New York:John Wiley.
Perfume Structure
Perfume Fragrances
are mixtures of Notes
Notes
are mixtures of Odorants
Rose de Grasse is
characterized by a honey
note, resembling very
slightly a delicate peppery
note, shading off into a light
tonality of natural carnation
… it is possible to perceive
a slightly green odor …
Billot, M. and F.V. Wells. Perfumery Technology:
Art, Science, Industry. New York:John Wiley.
Perfume Structure
Perfume Fragrances
are mixtures of Notes
Notes
are mixtures of Odorants
Odorants
are individual Chemicals
Hyacinth Green Base No. 10
Hydroxycitonellel
Phenylethyl acetate
Phenylethyl alcohol
isoEugenol
Cinnamic alcohol
Phenylacetaldehyde
Phenylacetaldehyde dimethyl acetal
Folial
Benzyl acetate
Phenylethyl formate
Terpineol
Rhodiniol
alpha-Amaylcinnamic aldehyde
Paracetone
Dimethyl phthalate
Odor Structure
Perfume Fragrances
Odors
are mixtures of Notes
are mixtures of Notes
Notes
Notes
are mixtures of Odorants
are groups of Odorants
Odorants
Odorants
are individual Chemicals
are individual Chemicals
Farmstead Odorant Groups
Organic Acids
Acetic Acid
Propionic Acid
Butanoic Acid
Iso-Valeric Acid
Pentanoic Acid
Alcohols,
Aldehydes,
Ketones
Methanol
Formaldehyde
Acetone
Methyl Ethyl Ketone
Phenolic
Compounds
Sulfuric
Compounds
Phenol
p-Cresol
Hydrogen Sulfide
Methyl mercaptan
Dimethyl sulfide
Diethyl sulfide
Nitrogen
Compounds
Ammonia
Methyl amine
Dimethyl amine
Diethyl amine
Indole
Skatole