Lupulin


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Related to Lupulin: hops

Lupulin

 

the commercial name for the glandules on the glumes of the fruit system (cones) and perianth of female hop blossoms (Humulus lupulus); also, the secretion from these glandules.

Solidified lupulin is a brownish yellow, sticky, coarse-grained powder containing essential oil, bitters, the alkaloid humulene, humulotannic acid, valerianic acid, gum, resin, wax, and a yellow pigment. Lupulin is used in brewing to give beer a pleasant, slightly bitter flavor, but it can also be toxic. A dose of 1-2 g may be mildly poisonous.

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A mixture of prenylated, geranylated, oxidized, and/or cyclized chalcones, of which 30 have been isolated to date, is secreted by the lupulin glands along with the bitter acids and volatile oils (Milligan et al.
Both the alpha acids and the oils are produced in the plant's lupulin glands.
Lupulin fits the extra-pale-ale bill perfectly," said Jennie Dorris in her 5280 Magazine biog.
Lupulin glands located on the bracteoles, and to a lesser extent on the bracts, is the source of commercial value in hops.
This year, we celebrate the season's first hops with three beers: two versions of Lupulin Ale.