Wild grape has the characteristics as follows :high acid content ,high tannin content ,high phenol content ,more dry ex-tracts and nutritional components,low sugar content ,and low juicing output.

• 山葡萄具有酸高、单宁多酚高、干浸物多、营养成分高和糖低、出汁率低的特点,主要产于东北、西北、西南地区。