Effect of Temperature, pH, Carbon and Nitrogen Nutritions on Mycelial Growth of Pleurotus sajor-caju (Fr.) Sing. and Pleurotus ostreatus (Fr.) $Qu{\acute{e}}l$.

여름느타리버섯과 느타리버섯의 균계(菌系) 생장(生長)에 영향(影響)을 미치는 몇가지 요인(要因)에 관한 시험(試驗)

Some factors affecting mycelial growth of Pleurotus sajor-caju and P. ostreatus. were investigated. The optimal temperature and pH of the medium for mycelial growth of both the species were $25^{\circ}C$ to $30^{\circ}C$, and 5 to 6, respectively. The effect of carbon and nitrogen sources on mycelial growth of the species was studied using modified Waksman's special medium as the basal medium. Generally, the disaccharides and polysaccharides showed good effect for mycelial growth of P. sajor-caju, and the polysaccharides were superior to the other classes of carbon sources for mycelial growth of P. ostreatus. Generally the organic nitrogen compounds showed good mycelial growth of both the species. The mycelial growth of the species were favored by the ammonium nitrogen more than by the nitrate nitrogen source. Asparagine was superior to the other kinds of amino acid. Six percentage of glucose and 0.6% ammonium tartarate was optimum for mycelial growth of P. sajor-caju whereas the optimum concentration for the P. ostreatut was 4% glucose and 0.4% ammonium tatarate.

여름느타리버섯 및 느타리버섯의 균사생장(菌絲生長) 적온(適溫)은$25{\sim}30^{\circ}C$이며 배지(培地)의 최적(最適) pH는 5{\sim}6이였다. 여름느타리버섯은 이당류(二糖類) 및 다당류(多糖類)가, 느타리버섯은 다당류(多糖類)가 균사생장(菌絲生長)에 가장 좋은 탄소급원(炭素給源)이었으며 질소급원(窒素給源)으로는 yeast extract등(等)의 복합(複合) 유기태질소(有機態窒素)가 단일(單一) amino산(酸) 및 무기태질소(無機態窒素)보다 좋았다. 단일(單一) amino산(酸) 중(中) asparagine이 가장 좋았으며 무기태질소급원(無機態窒素給源) 중(中) ammonium태(態) 질소(窒素)가 Nitrate태(態) 질소(窒素)보다 균사생장량(菌絲生長量)이 많았다. 균사생장(菌絲生長)에 알맞는 glucose와 ammonium tartrate의 비(比)는 여름느타리버섯이 각각(各各) 6% 및 0.6%, 느타리버섯이 4% 및 0.4%였다.