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Cyanine 및 Merocyanine 색소의 분광특성 및 광전특성 (1)
손세모(Se Mo Son),권태선(Gwon Tae Sun),김성훈(Kim Sung Hoon),고교영웅(E . Takahashi),광교량(R . Hirohashi) 한국화상학회 1995 한국화상학회지 Vol.1 No.1
헤테로원자(X=O, S, Se)의 변환에 따라 용액상에서 Merocyanine색소 및 Cyanine색소의 헤테로원자X는 p궤도의 원자보다 d궤도의 원자가 공명에 관여하여 공역계확장에 기여하였고, 유전률이 큰 용매 일수록 Merocyanine색소는 장파장으로 흡수극대치가 이동하였다. 또 Cyanine색소의 기저상태는 I- 이온과 정전하 발색단을 가진 이온성 화합물로 피어 있으므로 극성용매에서 I^- 이온의 전하가 색소본체로 전하 이동전이가 발생하여 단파장화 하였다. 고상에서 색소의 농도가 높을 수록 색소분자간의 거리가 가까워져 색소 상호작용이 변화하여 흡수스펙트럼에서는 전체적으로 폭이 넓은 형태로 나타났으며 이것은 농도가 높을수록 색소분자간의 거리가 가까워져 색소 상호작용이 변화한 때문이라고 생각된다. 또한 3차원 형광의 저농도에서 보이지 않는 새로운 스펙트럼이 Cyanine색소에서 나타났으며 이 스펙트럼은 색소고유의 흡수에 기인한 것으로 Eximer형광으로 생각된다. 광전특성에 있었서는 Merocyanine색소가 Cyanine색소보다 활성화에너지가 낮아 전하이동도가 커짐에 따라 높은 광전특성을 나타내었다. 그리고 Merocyanine색소 헤데로원자(X) 비교에서 광전특성은 O>S>Se순으로 높게 나타났다. Spectroscopic and Photoelectric Characteristics in the Cyanine · Merocyanine Dye were investigated according to systematically change of their structures. In solution,Hetero atoms(X) of Cyanine and Merocyanine dye were participated in resonance X of d obital rather than X of p obital, effected in resonance and contributed in extension of conjugated system , In solid film, new spectrum, called eximer-fluorenscence, appeared in 3-dimensional fluorenscence of high density of cyanine dye but not of merocyanine. As activational energy of conductivity in merocyanine dye was lower than in cyanine dye on the contrary drift mobility was higher, the former in photoelectric characteristics was more effective than the latter.
잣버섯 (Lentinus Iepideus DGUM 25050)의 균사생육을 위한 배지조성의 최적화
정광교,한영환 동국대학교 경주대학 1997 東國論集 Vol.16 No.2
The fruiting body of Lentinus lepideus has been used as an edible mushroom, which has good taste, typical pine flavor and medicinal components for immunostimulation and antitumor activity. In this study, the culture condition and medium composition of L. lepideus DGUM 25050 isolated were optimized for higher mycelial production. The optimal temperature and pH for mycelial culture were 30℃ and pH 5.0, respectively. Among the complex media tested, yeast-malt extract was most favorable for stimulating mycelial growth of L. lepideus. When the Czapek-Dox medium was used as a minimal medium for mycelial culture, starch of polysaccharide was very excellent and both lactose of dissacharide and xylitol of monosaccharose were prominent as a sole source of carbon and energy. As a source of nitrogen, organic nitrogen complex was better than inorganic one and organic soytone was best. When Na_2HPO_4 as a phosphorus source and p-amino benzoic acid as a vitamin were supplemented to the minimal medium, mycelial growth was enhanced. The optimal C/N ratio was 6.0 and stimulated a favorable growth of L. lepideus, when 3.0% of starch and 0.5% of soytone were added to the medium. The optimized medium for mycelial growth of L. lepideus DGUM 25050 was determined and named as LLM, of which composition was as follows: starch 3.0%, malt extract 1.2%, soytone 0.5%, Na2HPO4 0.72%, formic acid 0.1%, ethyl alcohol 0.1%, p-aminobenzoic 0.5 ㎎/l. When the mycelia were cultivated for 15 days, 9.2 g/ℓ of dry weight in LLM broth was higher than 6.8 g/ℓ in the medium used generally for mycelial culture of L. lepideus.