20.500.12556/RUL-155621 The stability of hop (Humulus lupulus L.) resins during long-period storage The stability of alpha-acids, beta-acids and hop storage index (HSI) values under different conditions (aerobic/anaerobic, 4 °C/room temperature) was studied in a two-year trial. Six different varieties (Celeia, Aurora, Bobek, Styrian Gold, Savinjski Golding and Styrian Wolf) were used in the form of cones and pellets. Alpha- and beta-acids were determined by HPLC and HSI by spectrophotometry. Anaerobic conditions at 4 °C were best for alpha-acids, beta-acids and HSI values; however, 10–35% of the alpha-acids were still lost after two years. The decline was greater (63–99%) under aerobic conditions and at room temperature. Alpha-/beta-acid ratios increased in hop cones and decreased in hop pellets, whereas HSI values increased in all storage conditions. Overall, the performance was better for pellets than for hop cones. Storage conditions, storage form and hop variety had significant effects on the stability of hop resins. alpha-acids beta-acids hop storage index stability hop storage alfa-kisline beta-kisline indeks staranja hmelja stabilnost Humulus lupulus hmelj skladiščenje true false true Angleški jezik Slovenski jezik Članek v reviji 2024-04-08 16:02:58 2024-04-08 16:02:59 2024-04-09 03:46:02 0000-00-00 00:00:00 2023 0 0 16 str. iss. 4, art. 936 Vol. 12 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 633.791 2223-7747 10.3390/plants12040936 142465283 plants-12-00936.pdf plants-12-00936.pdf 1 3F75EDD1BDBDF86D4D342C35E16D7D72 e7d4b0cfe97239a31ac2cbab1f2591e41b3277ffe2c81c2b069106ed0279f623 0748ae44-f5b1-11ee-937a-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=182608 https://www.mdpi.com/2223-7747/12/4/936 1 b5843a9a-f5b0-11ee-937a-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=182607 Biotehniška fakulteta 0 0 0