METHOD FOR TREATING LEES OF SHOCHU AND METHOD FOR EFFECTIVELY UTILIZING THE LEES

摘要

PPROBLEM TO BE SOLVED: To level up effective utilization of lees of Shochu (Japanese white distilled liquor) which society requests and widen the range of effective utilization and distribute to reduction of treating cost of lees of Shochu. PSOLUTION: The treatment method comprises agitating/kneading lees of Shochu (by using a blade type, a screw type or Brabender type) and carrying out solid-liquid separation of the kneaded material while carrying out vacuum distillation. The treatment method is characterized by distilling the lees at low pressure and low temperature while dividing the process into the following three stages. In the first stage, the lees of Shochu is distilled at low pressure and low temperature without adding anything to the lees of Shochu and a fraction containing BOD including ethanol and ammonia in high concentration is extracted. In the second stage, an acid is added to the lees of Shochu to lower pH to 2 and distilled at low pressure and low temperature and a fraction containing an organic acid such as acetic acid and propionic acid is extracted. In the third stage, an alkali is added to the lees of Shochu to neutralize pH and distilled at low pressure and low temperature and the distillate is extracted as dischargeable water having low BOD. In the present invention, a method for using an extract rich in organic acids and obtained in the second stage as an agent for exterminating red tide organisms, a method for using the extract obtained in the second stage as an acid treatment agent for laver and a method for utilizing the extract obtained in the second stage as a mildewproofing agent for livestock feed are further provided. PCOPYRIGHT: (C)2006,JPO&NCIPI