| 摘要 |
The present invention relates to an aqueous preservative/acidifier for ensiling of grass and other agricultural crops, comprising 50 - 85 weight % formic acid or formate salts or mixtures of formic acid and formate salts and 0.5 - 10 weight % lactose and/or lactose derivatives. The preservative preferably comprises 1 - 3 weight % lactose. The lactose may be derived from whey or lactose permeate, preferably after drying of same to a typical content of 20 - 25 % lactose. The preservative may comprise galactose, which is derived from lactose, instead of or in addition to lactose. The formate salts comprise ammonium- and/or potassium- and/or sodium ions. The preservative may comprise 3 - 10 weight % ammonia, and may also comprise 0.5 - 5 weight % glycerol, preferably 0.75 - 1.5 weight % glycerol. The preservative may also comprise 1 - 3 weight % benzoic acid and/or 5 - 20 weight % propionic acid. Most preferred, the preservative comprises 70 - 80 weight % formic acid, 6 - 7 weight % ammonia, 1 - 2 weight % potassium, 0.75 - 1.5 weight % glycerol and 1.5 - 2.5 weight % lactose. |
