Finding antiviral activity in Blackcurrants + other study insights

Posted May 5, 2020

A number of significant laboratory studies have been carried out on blackcurrants. Below are some of the findings:

INHIBITS INFLUENZA VIRUS INFECTION;

Blackcurrants have been shown in laboratory studies to have properties that restrict the infection rate of viruses such as the common cold and flu viruses, for example influenza type A and B.

DECREASES AIRWAY INFLAMMATION;

The study also tested extracts from 10 different blackcurrant varieties and highlighted that the ratio of specific anthocyanins in the fruit is important in alleviating lung inflammation.

During allergen induced asthma, a cascade of responses leads to increased levels of eosinophils that result in airway inflammation and tissue damage. A 2010 New Zealand laboratory study showed that blackcurrant extract, and a purified component, epigallocatechin, significantly suppressed two of the responses in the cascade:
– eotaxin-3 (CCL26) and
– phosphorylation of STAT-6.

PROMOTES GUT HEALTH BY ENHANCING PROBIOTIC BACTERIA;

These studies examined the potential of blackcurrants to promote gut health, which is an important part of a healthly immune system. Gut pathogens (disease causing organisms) can upset the balance of gut bacteria with detrimental effects to health, while the addition of probiotic (beneficial) bacteria has been reported to inhibit the adhesion of pathogens to the gut cells, to restore favourable microbial balance.

LOWERS METABOLIC RISKS ASSOCIATED WITH OBESITY;

This study fed overweight mice a high fat diet along with six different types of berries which had differing anthocyanin types.  The results showed that delphinidin-based and malvidin-based anthocyanins, the major anthocyanin type in blackcurrants and blueberries respectively, were more effective than other anthocyanin types in improving key metabolic risk factors associated with obesity caused by consumption of energy dense foods and a sedentary lifestyle. The dose of anthocyanins given to the mice was equivalent to a readily achievable daily dose in humans.

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To read the full study results click here: https://www.nzblackcurrants.com/laboratory-studies/

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