Blackcurrant name is derived from "Ribes nigrum") and similar fruit syrups and juices. Raw blackcurrants are 82% water, 15% carbohydrates, 1% protein and 0.4% fat (table). Per 100 g serving providing 63 kilocalories, the raw fruit has high vitamin C content (218% of the Daily Value, DV) and moderate levels of iron and manganese (12% DV each). Other nutrients are present in negligible amounts (less than 10% DV, table). Polyphenol phytochemicals present in the fruit, seeds and leaves, are being investigated for their potential biological activities. Major anthocyanins in blackcurrant pomace are delphinidin-3-"O"-glucoside, delphinidin-3-"O"-rutinoside, cyanidin-3-"O"-glucoside, and cyanidin-3-"O"-rutinoside, which are retained in
Ribes oxyacanthoides found in mountain talus. This plant is an alternate host for the white pine blister rust ("Cronartium ribicola"), the vector of a pine tree disease. It is sometimes eradicated in attempts to control the rust. Small amounts of this shrub and its fruit are present in the diets of wildlife species such as grizzly bear and mule deer. Humans find it "more or less palatable". Many Native American groups collected and stored it for food. The Ojibwa cooked and ate it with sweet corn and made it into preserves, for example. The root was used medicinally. Ribes oxyacanthoides Ribes oxyacanthoides