lupulin
/ˈluːpjʊlɪn
/noun [mass noun]
A bitter yellowish powder found on glandular hairs beneath the scales of the flowers of the female hop plant.It is very important that the hop doesn't lose lupulin otherwise the hop is no longer bitter....
- Essential oils and lupulin resins are concentrated in the lupulin glands, found at the base of the leaves, close to the central stem.
- They contain all the vegetative and lupulin material of raw leaf hops and can be used as a full replacement for leaf hops in the brewing process.
Origin
Early 19th century: from the modern Latin use as an epithet of Latin lupulus (as in Humulus lupulus), a plant mentioned by Pliny and perhaps denoting 'wild hops', + -in1.
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