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.

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