Pomace

Marc [' trɛstɐ ] are predominantly solid residues that remain after squeezing the juice of plant constituents. Especially when Viticulture ( pomace of grapes ) and the names are grains ( in the vernacular often referred to as Tröber ) or Lauer used. Local names include Trasch ( Switzerland ) or Bälisch (Mosel).

Although pomace is usually associated with viticulture, they also arise from squeezing apples, carrots or tomatoes and remaining from the grinding and pressing of coffee beans for espresso. Also in the production of olive oil residues ( the press cake ) are called pomace. Chance of this name is also common for mashing residues in beer and whiskey production; usually it is called there, however, spent grain.

Use

The pulp of most fruits that are incurred while juicing, are partly used as animal feed as a fertilizer. Specifically, in viticulture, the residue can also be processed in a fire, the likely best known of the Italian grappa, the French Marc and Greek raki (also: Raki or in Crete Tsikoudia ) be. The grape seeds of the pomace are occasionally used again to grape seed oil production. In antiquity was made ​​from the rape also a cheaper wine, Lora pressed.

Be consumed pomace, or grains, in the form of spent grain bread, a bread made from wheat dough or leaven, which incurred in the production of beer mash residues are added and which serves as a savory breading for meats in southern Germany ( " Brauer schnitzel ").

On Lake Biel in Switzerland Treberwurst is traditionally eaten every year, a cooked sausage, which is heated to the pomace during distillation in the combustion boiler.

Citrus, beet and apple pomace are partially used for the extraction of pectin, which also serves as a purely herbal substitutes of gelatin.

Furthermore, energetically marc valuable and suitable for power generation using biogas plants or as pomace pellets.

Apple pomace, partly mixed with up to 10% oats, is used in the winter months to deer feeding and Ankirren of ungulates.

Pomace of grapes

1000 kg pomace contained about 150 kg of organic substance, 3,5 kg of nitrogen (N ), 1 kg of phosphates ( P2O5) 5.5 kg of potassium (K2O ) and 0.4 kg of magnesium oxide (MgO).

Toxicology

Grape pomace are non-toxic in the rule for humans and animals. In some dogs, however, it comes with intake of pomace to a wine grape poisoning.