What letters are top notes
A-H
What letters are middle notes
I-S
What letters are bottom notes
T-Z
What is the order of MW for top, middle and bottom notes?
A-Z -> Low - High
Who coined vibration theory
Luca Turin
Which theory of smell is more widely accepted
Receptor Theory
What is the basic concept of vibration theory
The smell of a molecule is determined by it’s shape and the wavelength of the vibrations of it’s molecules
How many odours can humans smell
10’s of thousands
How many olfactory receptors do humans have
~400
What is the basic concept of receptor theory
Noses have olfactory receptors which change when an odour attaches to them, sending an electrical signal to the brain
What does the glomerulus do
Collects signals from all neurons expressing the same receptor
What chemical is ROI based on
Synthetic Linalool (ROI 100)
What is odour life defined as
The length of time in hours that one can recognise the smell on a strip
How many named odour chemicals exists
40,000
What is the maximum MW of volatile chemicals
~400
The higher the MW, the lower the ____ and _____
Volatility and ROI
The less soluble the molecule is in water, the _____ the ROI
Stronger
Do higher MW molecules have a longer or shorter odour life
Longer
What percentage of population would experience true synesthesia
~6%
What are the classes of TTC called and how many are there
Cramer class - 3 (Low, medium, high)
Which cramer class do fragrances typically fall into?
Class 1 Low
What are the three main routes of fragrance exposure
Oral
Inhalation
Dermal
What is aromachology
Evidence based - short term emotional or mood related response to inhalation
What is aromatherapy
Evidence based - long term, reproducible treatment of disease/psychological disorders through inhalation
