4.2.3.104 additional information malachite green assay adapted to rapidly assay terpene synthase activity for activity determination, and GS-MS analysis Zingiber zerumbet ? - ? 89 4.2.3.104 additional information the recombinant alpha-humulene synthase isozyme HS1 produces 94.6% alpha-humulene and 5.4% beta-caryophyllene Aquilaria crassna ? - ? 89 4.2.3.104 additional information the recombinant alpha-humulene synthase isozyme HS2 produces 95.0% alpha-humulene and 5.0% beta-caryophyllene Aquilaria crassna ? - ? 89 4.2.3.104 additional information the recombinant alpha-humulene synthase isozyme HS3 produces 93.5% alpha-humulene and 6.5% beta-caryophyllene Aquilaria crassna ? - ? 89 4.2.3.104 additional information the recombinant alpha-humulene synthase produces 93.45% alpha-humulene and 5.5% beta-caryophyllene. Product determination by gas chromatography-flame ionization detection (GC-FID) Zingiber zerumbet ? - ? 89 4.2.3.104 (2E,6E)-farnesyl diphosphate - Solanum lycopersicum alpha-humulene + diphosphate - ? 417820 4.2.3.104 (2E,6E)-farnesyl diphosphate - Cupriavidus necator alpha-humulene + diphosphate - ? 417820 4.2.3.104 (2E,6E)-farnesyl diphosphate - Zingiber zerumbet alpha-humulene + diphosphate - ? 417820 4.2.3.104 (2E,6E)-farnesyl diphosphate - Aquilaria crassna alpha-humulene + diphosphate - ? 417820 4.2.3.104 (2E,6E)-farnesyl diphosphate - Zingiber zerumbet alpha-humulene + diphosphate 95% yield of alpha-humulene besides the minor product beta-caryophyllene (5%) ? 417820