Topaz
The Australian hop variety Topaz is a seedless high alpha acid variety. Bred by the Hop Products Australia at their Rostrevor Breeding Garden Victoria. Topaz is a very robust variety with tight compact cones that hold well on maturity.
Topaz’s high alpha acid levels makes it one of the world’s best alpha acid producers.
Origin
Topaz is a triploid high alpha acid type cultivar bred by Hop Products Australia at their Rostrevor Breeding Garden Victoria. This variety was bred in 1985 by crossing a female Tetraploid J78 with a male 29/70/54. Topaz was selected for commercial production due to it high alpha acid content.
Note: 29/70/54 is a male hop sourced from Wye College, UK
| Analytical Data | |
|---|---|
| Yield (Kg/Ha) | 3800 – 4200 |
| Alpha acids (%) | 15.5 – 18.0 |
| Beta acids (%) | 6.0 – 7.0 |
| Alpha/Beta Ratio | 2.3 – 2.8 |
| Cohumulone (%) | 47 – 49.5 |
| Total Oils (ml/100g) | 0.8 – 1.7 |
| Myrcene (% of whole oil) | 25 – 43 |
| Beta Caryophyllene (% of whole oil) | 10 – 11 |
| Farnesene (% of whole oil) | 0 |
| Humulene (% of whole oil) | 11 – 13 |
| β&α Selinene (% of whole oil) | 2 – 4 |
| Humulene/Caryophyllene ratio | 1.1 – 1.2 |
Hop Acids by HPLC (ICE) • Steam distilled essential oil analyzed by GC-MS
The analytical values are typical for each variety at harvest time but values can vary among crop years, growing areas, growers, and with aging after harvest.