Coloured cereal grains are known to be a source of bioactive compounds known as polyphenols that can enhance health outcomes through their antioxidant activity. However, little is known about their bioaccessibility (release from the cereal matrix during digestion) and subsequent antioxidant activity. Thus, this study aimed to evaluate the bioaccessibility and antioxidant activity of polyphenols from purple barley, purple wheat and blue wheat. Methanol extracts of cereals were used as a control to identify individual compounds and quantify their relative antioxidant levels using liquid chromatography and mass spectroscopy. Digestion of the cereal flour was mimicked using electrolytes, digestive enzymes, and pH alterations. Among the cereal polyphenols identified, flavan-3-ols and anthocyanins were the least bioaccessible whereas flavones were the most bioaccessible after digestion. This study demonstrated that coloured cereals are sources of bioaccessible polyphenols with antioxidant activity, hence, promoting the value of these grains as potential functional food products.
Original languageEnglish
Publication statusPublished - 24 Nov 2022
Event2022 Faculty of Science and Health HDR and Honours Symposium - Convention Centre - CSU Riverina, Wagga Wagga, Australia
Duration: 24 Nov 202225 Nov 2022


Conference2022 Faculty of Science and Health HDR and Honours Symposium
CityWagga Wagga
Other2022 Faculty of Science and Health HDR and Honours Symposium
The Symposium is a great opportunity to extend peer networks and learn about the research that is being undertaken by our Higher Degree by Research and Honours students in the Faculty of Science and Health.

The Symposium is back after a short hiatus and will provide HDR and Honours students an opportunity to showcase their research to their peers in a conference setting. It is also an opportunity to come together in person to meet with staff providing research support services, with supervisors and other students in a supportive environment.

Students will present a ten minute seminar on their research, suitable for a non-specialist audience. This will be followed by five minutes of question time. The best HDR seminar and the best Honours seminar will be awarded a monetary prize to be used for professional development.

A selection of posters will be presented on the day and will also compete for a monetary prize to be used for professional development.

All Faculty of Science and Health HDR and Honours students will be invited to attend the event.
Internet address


Dive into the research topics of 'Polyphenols: Antioxidants with a Pretty Cereal Story'. Together they form a unique fingerprint.

Cite this