Best studies on blackcurrant:

Juglans regia and Ribes nigrum as potential nutraceuticals: Source of thermostable superoxide dismutase enzyme.
Selvaraj K, Katare DP, Kumar P, Chaudhary N.
J Food Biochem. 2019 May;43(5):e12823. doi: 10.1111/jfbc.12823.

Antifatigue Activity and Exercise Performance of Phenolic-Rich Extracts from Calendula officinalis, Ribes nigrum, and Vaccinium myrtillus.
Tung YT, Wu MF, Lee MC, Wu JH, Huang CC, Huang WC.
Nutrients. 2019 Jul 25;11(8). pii: E1715. doi: 10.3390/nu11081715.

Blackcurrant (Ribes nigrum) Extract Exerts an Anti-Inflammatory Action by Modulating Macrophage Phenotypes.
Lee Y, Lee JY.
Nutrients. 2019 Apr 28;11(5). pii: E975. doi: 10.3390/nu11050975.

Activity evaluation on Ribes species, traditionally used to speed up healing of wounds: With special focus on Ribes nigrum.
Kendir G, Süntar I, Çeribaşı AO, Köroğlu A.
J Ethnopharmacol. 2019 Jun 12;237:141-148. doi: 10.1016/j.jep.2019.03.038.

Enzymatic acylation of blackcurrant (Ribes nigrum) anthocyanins and evaluation of lipophilic properties and antioxidant capacity of derivatives.
Yang W, Kortesniemi M, Ma X, Zheng J, Yang B.
Food Chem. 2019 May 30;281:189-196. doi: 10.1016/j.foodchem.2018.12.111.

Incorporating salal berry (Gaultheria shallon) and blackcurrant (Ribes nigrum) pomace in yogurt for the development of a beverage with antidiabetic properties.
Ni H, Hayes HE, Stead D, Raikos V.
Heliyon. 2018 Oct 23;4(10):e00875. doi: 10.1016/j.heliyon.2018.e00875.

Ribes nigrum L. Prevents UVB-mediated Photoaging in Human Dermal Fibroblasts: Potential Antioxidant and Antiinflammatory Activity.
Li L, Hwang E, Ngo HTT, Seo SA, Lin P, Gao W, Liu Y, Yi TH.
Photochem Photobiol. 2018 Sep;94(5):1032-1039. doi: 10.1111/php.12938.

Antispasmodic Effect of Blackcurrant (Ribes nigrum L.) Juice and Its Potential Use as Functional Food in Gastrointestinal Disorders.
Miladinovic B, Brankovic S, Kostic M, Milutinovic M, Kitic N, Šavikin K, Kitic D.
Med Princ Pract. 2018;27(2):179-185. doi: 10.1159/000487202.

Characterization of free and bound volatile compounds in six Ribes nigrum L. blackcurrant cultivars.
Liu Y, Wang S, Ren J, Yuan G, Li Y, Zhang B, Zhu B.
Food Res Int. 2018 Jan;103:301-315. doi: 10.1016/j.foodres.2017.10.038.

Characterization, antioxidant and hypoglycemic activities of degraded polysaccharides from blackcurrant (Ribes nigrum L.) fruits.
Xu Y, Niu X, Liu N, Gao Y, Wang L, Xu G, Li X, Yang Y.
Food Chem. 2018 Mar 15;243:26-35. doi: 10.1016/j.foodchem.2017.09.107

Blackcurrant (Ribes nigrum L.) is a deciduous plant that can reach a height of 2 meters and belongs to the family of Grossulariaceae.

It is found in northern and central Europe, as well as in Asia and is widely cultivated in North America.

The phytochemical composition includes unsaturated fatty acids, anthocyanidins, flavonols, pectins, invert sugar and polysaccharides, all widely used in food technology, but also in traditional medicine. In particular, anthocyanins, Quercetin. Kaempferol (1), ascorbic acid, Rutin, Vitamin C.

Anthocyanins are abundant in the fruits, while flavonoids in the leaves have an antioxidant activity and are therefore useful to counteract oxidation damage caused by free radicals.
Anthocyanins are used in the treatment of eye defects and eye diseases (2).

Flavonoids have a wide range of activities: antimicrobial, anti-inflammatory, antiviral, antitoxic, antiseptic and antioxidant (3).

The phytochemical composition varies greatly depending on the color of the currant. In Blackcurrant, the total anthocyanin content ranges from 1260 to 2878mg/100g dry weight and the total flavonol content is about 43.6-89.9mg / 100g dry weight. In redcurrants, the content of anthocyanins and flavonols ranges from 138 to 462mg/100g dry weight (4).

Blackcurrant has shown gastroprotective relaxing activity on smooth gastrointestinal muscle in an in vitro study (5).

Blackcurrant studies

References______________________________________________

(1) Flavonol Glycosides in Currant Leaves and Variation with Growth Season, Growth Location, and Leaf Position.
Yang W, Alanne AL, Liu P, Kallio H, Yang B.
J Agric Food Chem. 2015 Oct 28;63(42):9269-76. doi: 10.1021/acs.jafc.5b04171. Epub 2015 Oct 14.

(2) Matsumoto H, Kamm KE, Stull JT, Azuma H. Delphinidin-3-rutinoside relaxes the bovine ciliary smooth muscle through activation of ETB receptor and NO/cGMP pathway. Experimental Eye Research. 2005;80(3):313–322

(3) Movileanu L, Neagoe I, Flonta ML. Interaction of the antioxidant flavonoid quercetin with planar lipid bilayers. International Journal of Pharmaceutics. 2000;205(1-2):135–146.

(4) High variability in flavonoid contents and composition between different North-European currant (Ribes spp.) varieties.   -   Mattila PH, Hellström J, Karhu S, Pihlava JM, Veteläinen M.   -   Food Chem. 2016 Aug 1;204:14-20. doi: 10.1016/j.foodchem.2016.02.056.

(5) Antispasmodic Effect of Blackcurrant (Ribes nigrum L.) Juice and Its Potential Use as Functional Food in Gastrointestinal Disorders.  Miladinovic B, Brankovic S, Kostic M, Milutinovic M, Kitic N, Šavikin K, Kitic D.  Med Princ Pract. 2018;27(2):179-185. doi: 10.1159/000487202.