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
Acer nigrum more deeply grooved bark, slightly smaller seeds, and thicker petioles. Hybrids are intermediate in their characteristics. The geographic range of "A. nigrum" is slightly more limited than the sugar maple, encompassing much of the Midwestern United States, portions of the Eastern United States, and the southeast of Canada in southern Ontario. The black maple's mature height ranges from 21 to 34 meters (70 to 110 feet). This species is used similarly to the "A. saccharum", for timber as hard maple, for landscaping, and for maple syrup production. Acer nigrum Acer nigrum (black maple) is a species of maple closely related