Abstract: To provide a series of techniques for obtaining ?-phellandrene with high purity and in a large quantity. Provided is a recombinant cell capable of producing ?-phellandrene, prepared by introducing at least one nucleic acid selected from the group consisting of a nucleic acid encoding geranyl pyrophosphate (GPP) synthase and a nucleic acid encoding neryl pyrophosphate (NPP) synthase, and a nucleic acid encoding ?-phellandrene synthase into a host cell in such a manner that these nucleic acids are expressed in the host cell. Also provided is a method for producing ?-phellandrene by culturing the recombinant cell to produce ?-phellandrene in the recombinant cell.

Abstract: To provide a series of techniques for obtaining ?-phellandrene with high purity and in a large quantity. Provided is a recombinant cell capable of producing ?-phellandrene, prepared by introducing at least one nucleic acid selected from the group consisting of a nucleic acid encoding geranyl pyrophosphate (GPP) synthase and a nucleic acid encoding neryl pyrophosphate (NPP) synthase, and a nucleic acid encoding ?-phellandrene synthase into a host cell in such a manner that these nucleic acids are expressed in the host cell. Also provided is a method for producing ?-phellandrene by culturing the recombinant cell to produce ?-phellandrene in the recombinant cell.

Abstract: One object is to provide a measuring device configured to evaluate the power generation characteristics of a response-delay type fuel cell automatically, precisely, and with excellent reproducibility with consideration of the response delay against power load fluctuations, and effectively acclimatize and develop microorganisms that are provided to generate power. A potentio-galvanostat is connected to a microbial fuel cell provided as an exemplary response-delay type fuel cell. Further, an automatic measuring device is connected to the potentio-galvanostat. The automatic measuring device has a program function and measures the internal resistance of the microbial fuel cell at set time.

Abstract: [PROBLEMS] To provide a microbial fuel cell whose parts can be replaced without lowering the energy recovery efficiency and a membrane cassette for microbial fuel cells. [MEANS FOR SOLVING PROBLEMS] A negative electrode (10) supporting anaerobic microorganisms (11) is immersed in an organic substrate (S). A positive electrode (15) sealed together with an electrolyte (D) in a closed hollow cassette (20) having an outer shell (25) at least a part of which is formed of an ion-permeable membrane (21), an inlet (22), and an outlet (23) or connected to the inner side of an ion-permeable membrane (21) is inserted into the organic substrate (S). While oxygen (O) is supplied into the cassette (20) through the inlet (22) and the outlet (23), electricity is taken out through a circuit (18) electrically interconnecting the negative and positive electrodes (10, 15).

Abstract: One object is to provide a measuring device configured to evaluate the power generation characteristics of a response-delay type fuel cell automatically, precisely, and with excellent reproducibility with consideration of the response delay against power load fluctuations, and effectively acclimatize and develop microorganisms that are provided to generate power. A potentio-galvanostat is connected to a microbial fuel cell provided as an exemplary response-delay type fuel cell. Further, an automatic measuring device is connected to the potentio-galvanostat. The automatic measuring device has a program function and measures the internal resistance of the microbial fuel cell at set time.