Abstract
Study of spontaneous photon emission without external or artificial stimulation in biological tissues and cells in vivo is impeded by the extremely low intensity of such biophoton emission in many subjects and systems of interest. The aim of our research project is the research and development of improved means of detecting these biophoton phenomena and the study of their characteristics. We describe here recent developments in highly sensitive photon counting technique and measurement of ultraweak photon emission. As an illustration, we discuss two areas of current research: 1) Studies of the effects of various solutions of germination promoter on ultraweak photon emission in soybean have been made. Among inhibitors examined, KCN and EtOH were found to enhance photon emission intensity. 2) The effect of environment (oxygen and nitrogen) and scavenger solutions on ultraweak photon emission intensity in soaked soybean was examined and found to be oxygen-dependent. Thus it is thought that the active oxygen species were participated in the ultraweak photon emission of soybeans. The mechanisms underlying these phenomena and the results of further studies will be discussed.
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