Making Sense of Smells

Making Sense of Smells Douglas W. Hamilton BAE 1022 Spring 2010

Odors need not be so mysterious … • They have structure • They are measurable

Five Senses

Physical Five Senses Chemical

Touch Physical Five Senses Chemical

Touch Physical Hearing Five Senses Chemical

Touch Physical Hearing Sight Five Senses Chemical

Touch Physical Hearing Sight Five Senses Smell Chemical Taste

Animal Sense of Smell Vomeronasal Organ Olfactory Organ Trigeminal Nerve

Human Sense of Smell Vomeronasal Organ Olfactory Organ Trigeminal Nerve

The Human Nose And Olfactory Organ

Olfactory Bulb and Cilia

Smelling with the Olfactory Organ and Limbic System

Cranial Nerves

Trigeminal Nerve Maxillary Opthalmic Mandibular Pain Response !

Some Odorants Sensed Through the Trigeminal Nerve Menthol Capsaicin Ammonia Acetic Acid

Odors need not be so mysterious … • They have structure

Perfume Structure 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 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

Farmstead Odorant Groups

Odors need not be so mysterious … • They have structure • They are measurable

How does it smell? How Long? How Much? How Strong? Character Persistence Concentration Intensity Odor Measurement

Measuring Notes and Odors

Character

Persistence

Persistence NH3

Persistence NH3 H3C-NH-CH3

Persistence NH3 CH3 H3C-NH-CH3 N

Making Sense of Smells

Making Sense of Smells

Presentation Transcript

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Making Sense of Smells A Guide for Understanding Farmstead Odors

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Making Sense of Smells A Guide for Understanding Farmstead Odors

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Making Sense of Smells A Guide for Understanding Farmstead Odors

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Making Sense of Smells A Guide for Understanding Farmstead Odors

MAKING SENSE OF HISTORY:

Making Sense of Smells A Guide for Understanding Farmstead Odors