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 roezlii Ribes roezlii Ribes roezlii is a North American species of currant known by the common name Sierra gooseberry. "Ribes roezlii" is native to many of the mountain ranges of California, its distribution extending east into Nevada and north into Oregon. Its habitat includes chaparral, woodlands, and forested areas. "Ribes roezlii" is a spiny shrub growing erect to a maximum height around . The hairless to hairy or woolly leaves are up to 2.5 centimeters (1 inch) long and divided into 3 or 5 rounded, toothed lobes. The inflorescence is a solitary flower or raceme of 2 or 3 small wind-pollinated