AAC GOLDMAN – A CULTIVAR WITH LOWER DEOXYNIVALENOL CONTENT HOLDS PROMISE FOR MALTING AND BREWING
Citation
CWFHB-CWS Winnipeg 2018/11/19 - 2018/11/22
Plain language summary
AAC Goldman is a recently registered malting barley cultivar that has moderate resistance to fusarium head blight (a fungal disease affecting the head/spike of barley and other small cereal also known as FHB or scab) and lower accumulation of the toxin (deoxynivalenol also known as DON) produced by this fungus.
In collaboration with the Canadian Malting Barley Technical Center, malting and its first detailed brewing analyses and sensory evaluation were conducted alongside AC Metcalfe (malt quality standard), on grain samples grown by La Coop Fédérée and Brandon Research and Development Centre at three locations in 2017. The overall malt quality for AAC Goldman was good and the sensory evaluation of finished beers made from it observed intensities of 38 flavours and aromas.
Abstract
AAC Goldman is a two-row, malting barley cultivar widely adapted to western Canada. It was developed at Agriculture and Agri-Food Canada Brandon Research and Development Centre (AAFC-BRDC) from the cross TR04282/Newdale by isolated microspore culture. TR04282 is an elite line developed at AAFC-BRDC from the cross Harbin/TR253//TR253. Harbin is a two-row accession from China used as the FHB resistance source. When evaluated in FHB nurseries in Manitoba, AAC Goldman has consistently displayed 35% less deoxynivalenol than the well-known malting cultivar AC Metcalfe.
The license for AAC Goldman was awarded to La Coop Fédérée in 2017 and received registration from the Variety Registration Office, Canadian Food Inspection Agency in 2018.
In collaboration with the Canadian Malting Barley Technical Center, malting and its first detailed brewing analyses and sensory evaluation were conducted alongside AC Metcalfe (malt quality standard), on grain samples grown by La Coop Fédérée and AAFC-BRDC at three locations in 2017.
The overall malt quality for AAC Goldman was good (very good values in friability, extract yield, soluble protein, and enzymes; however, lower FAN levels). Under the brewing conditions used, on average, AAC Goldman showed quicker conversion time, produced wort with higher pH, comparable colour and higher attenuation limit than AC Metcalfe. The sensory evaluation of finished beers made from these two cultivars observed intensities of 38 flavours and aromas and are presented for each variety.
These preliminary analyses indicate that, soon, the Canadian farmers and barley industry will have another good choice available when it comes to malting barley.