2003 Volume 57 Issue 1-2 Pages 23-30
Living spores of Athyrium niponicum were heated at 62 to 302℃ for 24 hours under the atmosphere in the laboratory to investigate the changes in physical and chemical characters of spores and hydrocarbon generation from spores during artificial heating experiments. It was shown that the heated spores have decreasing trends of weight, size, atomic H/C ratio and brightness (stTAI; Ujiie 2001) with increasing heating temperature, but an increasing trend of atomic N/C ratio, especially in the range of high temperature. It is concluded from the judgment of decreasing trend of the atomic H/C ratio in the heating experiments that hydrocarbon generation from spores should take place in the temperature range of about 159 and 237℃.
