Natural Health News – found two varieties of blackcurrant to increase cognitive performance and status alert, with a variety showing particular promise in blocking enzymes associated with Parkinson’s.
The research, carried out by New Zealand and British researchers showed that the compounds found in two types of black currant New Zealand – DelCyan and Blackadder -. Indicators of mental performance, such as accuracy, attention and mood
also she found that the juice of cultivar Blackadder reduces the activity of a family of enzymes called monoamine oxidases, which regulate the levels of serotonin and dopamine in the brain. These chemicals are known to affect mood and cognition, and are the focus for the treatment of symptoms associated with both neurodegenerative disorders disease and Parkinson’s mood, such as stress and anxiety. What you need to know
“ Blackcurrants are rich in antioxidant polyphenols.
“ There are two types of black currant New Zealand – DelCyan and Blackadder – increased performance indicators. Mental, such as accuracy, attention and mood
“ The researchers say that this effect is due to the way polypheonls blackcurrant reduce oxidative stress in the brain.
Different varieties, different effects
Human small study involved 36 healthy participants aged between 18 and 35 years who were assigned to one of three groups.
Two groups received a drink intervention 142 ml derived from one of the variety of blackcurrant Blackadder or variety DelCyan, both containing 5 mg of polyphenols per 60 kg body weight, or a placebo containing no polyphenols but matches flavor and juices sucrose.
After waiting 60 minutes for the antioxidants can absorb, subjects completed several tasks that are commonly used in nutritional intervention studies to measure cognitive performance, flexibility and scale of mood.
The results showed that the varieties had slightly different effects -. Subjects who drank the DelCyan had a higher precision Rapid Visual Information Processing (RVIP), while those who drank juice Blackadder scored best for alertness and vigilance
Subjects who drank two blackcurrant juice reported a reduction of mental fatigue. By mood, they reported feeling more alert, but not quieter or more content.
A natural MAO inhibitor
According to the researchers, phenolic acids in the Blackadder variety – grown by the New Zealand Institute for Plant and Food Research, which funded the research – caused an almost complete inhibition (96%) of monoamine oxidase B (MAO -B) enzymes.
Blocking these enzymes that regulate serotonin and dopamine in the brain, reduces oxidative stress -. Which in turn it is compatible with normal cognitive function and mood
monoamine oxidase (MAO) are commonly used in the treatment of both mood disorder and neurodegenerative diseases such as Parkinson’s disease.
“This is the first demonstration of a clinically significant inhibition of MAO-B after supplementation blackcurrant” they wrote the authors. “Although this study measured the inhibition of MAO-B only in peripheral tissue, whether inhibition could be shown to be active at the central level, clinical applications of an MAO inhibitor of a fruit commonly consumed could be enormous. ”
There are about 150 types of blackcurrant and not all of these have been evaluated for its benefits on the brain. New Zealand breeders contend that the berries produced in that country contain the highest levels of polyphenols in the world, although independent published research on this topic is scarce. Similarly drinks commercial blackcurrant can vary greatly in their polyphenol content . No doubt blackcurrant polyphenols however have beneficial effects.
Previous research by the Institute of Horticulture and Food Research of New Zealand in the protective effect of food components in nerve cells found that phenolic components found in blackcurrant out-performed the corresponding compounds are in other fruits like blueberry and boysenberry . This work suggests that the antioxidant capacity of the blackcurrant is such that the anthocyanins and procyanidins as other components not only protect nerve cells (neurons) of oxidative stress, but also helped regenerate the bodies own defense systems.