This clinical study is exploring the potential benefits of Queen Garnet Plum juice on blood pressure and memory.

The juice from this plum variety has been found to contain a substantial amount of naturally occurring anthocyanins, or antioxidants.

Anthocyanins are compounds found naturally in fruits and vegetables that are blue and red in colour like plums and blueberries. 

The study is investigating the effect of consuming fruit juice high in anthocyanins, on blood pressure, memory and cognition and the gut microbiota population in generally healthy older adults.

As part of the trial, participants are fitted with 24-hour blood pressure monitors and taken through a series of cognitive assessments before receiving different fruit juices to consumed daily for 16 weeks.

Urine samples are tested at regular intervals before and after the juice is consumed to see how quickly it is being metabolised by the body.

Funding body

Queensland Alliance for Agriculture and Food Innovation

Scheme name

UGPN Grant

Years funded


Lead institution

University of Wollongong

Project leaders