摘要:
The present invention provides a method for measuring the amount of free sulfurous acid and bound sulfurous acid in a sample using a bacterium belonging to Thiobacillus thiooxidans or Thiobacillus ferrooxidans of in which the sample is treated with acid and/or alkali to give free sulfurous acid alone in the sample. Then, the total amount of free sulfurous acid in the sample is measured by an oxidation reaction of free sulfurous acid to sulfuric acid using a bacterium belonging to Thiobacillus thiooxidans or Thiobacillus ferrooxidans.
摘要:
The present invention relates to a BOD analyzer comprising a microbe sensor containing an oxygen electrode and a microbe membrane. The microbe membrane is made by immobilizing microorganisms belonging to the genus Klebsiella in membrane. Specifically, the present invention relates to a BOD analyzer comprising flow cell equipped with a microbe sensor containing an oxygen electrode and a microbe membrane; and a liquid passage which is connected with the entrance of the flow cell and which is equipped with an outlet. The microbe membrane is made by immobilizing microorganisms belonging to Klebsiella oxytoca 12092 strain in a porous hydrophilic membrane having an average pore size of 0.65-3 .mu.m in diameter by using at least one gelating agent selected from the group consisting of alginic acid or salts thereof, agar, gellan gum, xanthane gum, gelatine, carageenan, locust bean gum, methylcellulose, pectin, and pullulan. The present invention also relates to improved methods of analyzing BOD by using the BOD analyzer.
摘要:
A novel foodstuff is produced by reacting a milk-coagulating enzyme which is produced by a milk-coagulating enzyme-producing microorganism belonging to genus Aspergillus, genus Mucor, or genus Rhizopus and which exhibits a milk-coagulating activity (A) and a protease activity (B) such that the ratio of (A)/(B) is larger than 0.1, with soymilk thereby inducing coagulation, and collecting a resulting coagulated material. The novel foodstuffs produced have the benefit of lacking the bitterness and astringency common to soybean, abounds in emulsifying activity, exhibit a high water-retention property, and are smoothly agreeable to the taste. Thus, they have extensive utility as substitutes for raw materials in conventional processed foods. They are especially suitable for use as raw materials for emulsifiable foods.