Answer: Lupulin
Explanation:
The cones of hop consists of different oils one of them is lupulin. Lupulin is a yellow colored waxy substance produce by the small yellow glands present in the cones. It is an oleoresin. The lupulin is used to impart aroma and flavor to the beer. It contains lupulone and humulone which impart antibiotic properties and suppresses the growth of bacteria but favors the growth of brewer's yeast.
