|Black raspberry is separate species than red raspberry. The cultivars were created from wild species: Rubus occidentalis L., R. leucodermis and R. strigosus (naturally alternativeley in North America), R. coreanus (North and South Corea, Japan, China)|
Apart from fruits, seeds, leaves, young apical shoots and roots that have been used in herbal medicine since antiquity also have health properties.
Currently, scientific research has confirmed the antiviral, antibacterial and anticancer effects of black raspberry.
|The use of fruit, health value of black raspberries
Due to the high content of anthocyanins, the black raspberry has been used as a natural dye since many years. It was used in processing to improve the color of the prepared products. The research is currently being conducted on the use of black raspberries and other berries with a high anthocyanin content in the chemoprevention of pre-cancerous lesions or their progression to cancer or cancer recurrence.
Black raspberry varieties differ in the content of anthocyanins and polyphenols, but the content of these compounds in black raspberries is definitely higher than, for example, in elderberry fruit (Sambucus nigra), highbush blueberry (Vaccinium corymbosum), black currant (Ribes nigrum) or blackberry ( Rubus subgenus Rubus). Therefore, these fruits were included in the so-called functional food. They are used as nutraceuticals that combine nutritional and pharmaceutical value.
Black raspberry antiviral effect
The research conducted by Korean scientists showed that black raspberry (Rubus coreanus) seeds left over from wine or juice production have antiviral activity against influenza A and B viruses and the coronavirus KR01, a pandemic strain from 2009. One of the polyphenols, gallic acid, has antiviral activity. In mice infected with influenza virus, oral administration of powdered black raspberry seeds (very low dose of 1 mg / kg body weight) significantly improved the survival rate and reduced viral load in the lungs.
Black raspberry anti-cancer effect
Black raspberries contain many known chemopreventive agents, which is why they have been included in numerous clinical trials. Among polyphenols, ellagotannins and gallotannins deserve special attention. In the digestive tract, they are hydrolysed to ellagic acid. It is one of the polyphenols that is credited with a broad anti-inflammatory and anti-cancer effect. According to the studies, adding black raspberry supplementation to chemotherapy may result in increased drug effectiveness and reduced resistance.
There is experimental evidence showing an inhibitory effect of oral administration of powdered black raspberry seeds on the induction of mammary gland cancer in rats. In addition to its prophylactic and therapeutic effects, black raspberries can potentially be used as adjuvants to chemotherapy to increase its effectiveness.
Anti-inflammatory and antibacterial effects of black raspberry
The research conducted by Korean scientists shows that the greatest anti-inflammatory and antibacterial properties that can be used as an alternative for use in the food and cosmetics industry and / or as pharmaceuticals are black raspberries.
Root polyphenols were fatal against methicillin-resistant Staphyloccus aureus (MRSA) (Staphylococcus aureus), carbapenem-resistant Acinetobacter baumannii (CRAB) (the bacteria cause nosocomial infections in immunocompromised individuals) and Bacillus anthglikais (bacillus anthracika). On the other hand, black raspberry fruits did not show these properties.
Black raspberry in the preventive treatment of type 2 diabetes
Diabetes mellitus is currently one of the most common civilization diseases causing fatal complications all over the world (including diseases of the blood system, eyes, kidneys and nervous system). Type 2 diabetes is associated with various degrees of insulin resistance, impaired insulin secretion, and increased hepatic glucose production. The lifestyle, mainly reduced physical activity, promotes overweight and obesity, resulting in an increased incidence of diabetes. Dietary factors also play an important role in preventing, treating existing diabetes, and preventing or at least slowing the rate of development of complications. The increased consumption of vegetables and fruits is at the heart of the dietary recommendations for preventing and treating diabetes. The antidiabetic activity of polyphenols derived from berries, including black raspberry, may be caused, among others, by their antioxidant and anti-inflammatory effects, inhibition and absorption of the enzyme digesting carbohydrates in the gastrointestinal tract.