Several possibilities exist for the further processing of samples. The approach of combining several individual samples to create one composite sample that is subsequently milled using a semi-automatic mill has been shown to be of considerable advantage. The hop powder is then divided into representative samples using a device designed for this purpose. Two of the divided samples are used in their entirety for the analysis (duplicate determination) [1−3].
Hops and hop products intended for use in beer brewing or elsewhere in the food industry
The respective constituents of hops are not uniformly distributed throughout the cones. The aroma compounds and bitter substances are found in the lupulin glands inside the cone, adhering to the cone bracteoles near the strig. The polyphenols, on the other hand, are found in the bracts, bracteoles and stems. In order to reliably analyze the constituents of hop cones, homogenization of the sample is required. For this purpose, the cones are ground and the sample is divided.