ISO 6632:1981 水果、蔬菜及其制品.挥发性酸度的测定

标准编号：ISO 6632:1981

中文名称：水果、蔬菜及其制品.挥发性酸度的测定

英文名称：Fruits, vegetables and derived products — Determination of volatile acidity

发布日期：1981-11

标准范围

该方法包括用酒石酸酸化试验部分，通过水蒸气蒸馏夹带挥发性酸，并在酚酞作为指示剂的情况下用标准体积氢氧化钠溶液滴定馏出物。该方法适用于所有新鲜产品、未使用化学防腐剂保存的产品以及添加了二氧化硫的产品。

The method consists in acidifying a test portion with tartaric acid, entraining the volatile acids by steam distillation and titrating the distillate with standard volumetric sodium hydroxide solution in the presence of phenolphthalein as an indicator. The method is applicable to all fresh products, to products preserved without chemical preservatives, and to products to which sulphur dioxide has been added.

标准预览图