Slovak wine following terms: Víno bez zemepisného označenia - "Wine without geographic indication" is replacing former category of Stolové víno - Table wine. Minimum level of sugar content is 13 °NM. Víno s chráneným zemepisným označením - "Wine with protected geographic indication" - produced from grapes registered in the List of registered varieties, grown, produced and bottled in one of the Slovak wine regions, maximum yield per hectare wasn't exceeded, minimum level of sugar content was 13 °NM and it fulfills the requirements of established product specification. It can be indicated with traditional term regionálne víno if the grapes reached 15 °NM,
Phenolic content in wine grapes known as teinturiers, such as Alicante Bouschet, which have a small amount of anthocyanins in the pulp that produces pigmented juice. There are several types of anthocyanins (as the glycoside) found in wine grapes which are responsible for the vast range of coloring from ruby red through to dark black found in wine grapes. Ampelographers can use this observation to assist in the identification of different grape varieties. The European vine family "Vitis vinifera" is characterized by anthocyanins that are composed of only one molecule of glucose while non-"vinifera" vines such as hybrids and the American "Vitis labrusca" will