효모추출물 중에 함유되어 있는 표고버섯 자실체 형성 촉진 물질을 검토한 결과, 그 자실체 형성 촉진 물질은 티아민이었으며, 티아민은 유리의 형태로만 존재하고, 티아민 일인산, 이인산 및 삼인산 에스테르는 존재하지 않았다. 한편, 효모추출물 1g중에 함유된 티아민의 량은 436이고, 그 전체량의 약 76%에 상당하는 332의 티아민이 Fraction II에, 약 20%에 해당하는 87이 Fraction I 에 존재하였으며, 이러한 티아민은 표고버섯

The investigation was carried out to identify the active constituent in yeast extract for fruit body formation of Lentinula edodes. The result suggests that free thiamin which is hewn as the active substance for the fruiting of L edodes, was detected but thiamin mono, di, three phosphates were not detected in the yeast extract produced by Difco Co.. Therefore, the thiamin content of the yeast extract was determined, the yeast extract was fractionated to five portion by the post-column fluorescence method. The content of thiamin in yeast extract( 1g) was 0.436mg as thiamin hydrochloride. It was found that 76% of the total thiamin(0.332mg) was contained in fraction II. About 20% of the total thiamin(0.087mg) was present in fraction I, but not in fractions III, IV and V. In accordance with the contents of thiamin in the fractions, the fruit body formation was the highest by the treatment of fraction II(100%) and followed by fraction I (60%), V(50%), III(30%). Thiamin did not influence for the vegetative mycelial growth of L. edodes, but be used for fruit body formation.

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