Essential oils and lupulin resins are concentrated in the lupulin glands, found at the base of the leaves, close to the central stem. |
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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. |
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It is found at the base of the hop cone petals inside tiny golden spheres called lupulin glands. |
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It is very important that the hop doesn't lose lupulin otherwise the hop is no longer bitter. |
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Chemical analysis of lupulin reveals bitter substances, including the alkaloids codeine and morphine, which are responsible for the bitter flavor of hops. |
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The Quality of Hops depends largely on the amount of lupulin they contain. |
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