• 미생물학회지
• /
• 제6권1호
• /
• pp.29-35
• /
• 1968

There are many reports on the effect of salts to the fermentation of the yeasts, but there are a few reports on the effect of the ammonium thiocyanate(NH$_4CNS$) on the fermentation of the yeasts(Saccharomyces brenerei-Hefe-Rasse X11, Saccharomyces formosensis No. 396 IAM and Saccharomyces cerevisiae IAM). A study has been made on the effects of the ammonium thiocyanate on the fermentation of the above yeasts. The results of the research are as belows: 1) The addition of 0. 00001 mol. of ammonium thiocyanate makes the fermentation of the yeast(Sacch. formosensis No. 39 IAM) facilitate, but has not influenced the another yeast (Sacch. brenerei-Hefe-Rasse XII). 2) The addition of 0. 001 mol. of ammonium thiocyanate makes fermentation of Rases XII the fastest, but the on other yeast (Sacch. formosensis No - 396 IAM) was accelerated by the addition of 0. 1 mol., and it seems to have abnormal fermentation by the addition of 0. 0001 mol. The addition of ammonium thiocyanate(0. 00001-0. 001 mol.) inhibited the fermentatirn of the yeast(Sacch. cerevisiae IAM), but the concentration of 0. 1 mol. does not interrupt the fermentation of Sacch. cerevisiae IAM and increased the fermentation. 3) The order of effects to the fermentation of each yeast is Sacch. brenerei-Hefe-Rasse XII, Sacch. formosensis No. 396 IAM, Sacch. cerevisiae IAM.

• ALGAE
• /
• 제20권2호
• /
• pp.121-125
• /
• 2005

The modern integrated fish-seaweed mariculture has been tested to reduce the environmental impacts of an intensive fed culture. To obtain the best seaweed bioremediation performance, the effects of therapeutants used for fish disease control on the selected seaweed species should be considered. As a selected seaweed, Porphyra yezoensis was tested with six commercial antibiotics including erythromycin thiocyanate_A, erythromycin thiocyanate_B, oxytetracycline, doxycycline, pefloxacin, and amoxicillin trihydrate under the batch incubation at a photon flux density of 10 $\mu$mol ${\cdot}m^{-2}\;{\cdot}\;s^{-1}$ at 15$^{\circ}C$. Among the tested commercial antibiotics, erythromycin thiocyanate_A, erythromycin thiocyanate_B, oxytetracycline, and doxycycline showed decreases in Fv/Fm, the photochemical efficiency of photosystem II, with a dose-dependant and time-dependant manner. From the quenching analysis of chlorophyll fluorescence, three differential patterns were observed in the antibiotics-treated Porphyra: (1) high nonphotochemical quenching (NPQ) and low photochemical quenching (qP) in the cases of Erythromycin thiocyanate_B and amoxicillin trihydrate, (2) high NPQ and high qP in the case of pefloxacin and (3) low NPQ and low qP in the case of oxytetracycline. These results indicated that antibiotics affected in various ways on the photosynthetic apparatus, reflecting differential lesion sites of antibiotics. In addition, the rates of ammonium uptake also decreased with a decrease of Fv/Fm in P. yezoensis thalli treated with erythromycin thiocyanate_B and oxytetracycline. Therefore, the four antibiotics mentioned could affect the bioremediation capacity of the selected seaweed species in the integrated fish-seaweed mariculture system due to the decrease of photosynthetic activity and the simultaneous decrease of ammonium uptake.

• 대한방사선기술학회지:방사선기술과학
• /
• 제2권1호
• /
• pp.89-93
• /
• 1979

Fricke dosimeter solution in chemical dosimeters consists of Ferrous sulfate, Sodium chloride and Sulfuric acid. Authors made a new experiment on the characteristics of dosimeter solution with Ammonium Thiocyanate and the results obtained were as follows; 1. The chemical oxidation response after irradiation was very rapid(within fifteen minutes). 2. A preventive measure of the spontaneous oxidation as time goes on was possible to use 0.1 mM instead of 1mM Ferrous sulfate solution. 3. 477nm in wavelength of spectrophotometer was most ideal to measure optical density in this solution

• Bulletin of the Korean Chemical Society
• /
• 제29권12호
• /
• pp.2346-2348
• /
• 2008

• Journal of the Korean Wood Science and Technology
• /
• 제36권6호
• /
• pp.159-167
• /
• 2008

본 연구는 편백정유의 천연 항산화제로의 유용성을 평가하기 위하여 수행했다. 편백정유 원액과 편백정유 분획물의 항산화활성을 1,1-diphenyl-2-picrylhydrazyl (DPPH)법과 ammonium thiocyanate법을 사용하여 조사하였다. DPPH법을 이용한 경우 편백정유의 $IC_{50}$은 $40{\mu}{\ell}/m{\ell}$였으며, 편백정유 분획물 중에서 G분획의 DPPH 항산화능이 $0.5{\mu}{\ell}/m{\ell}$ 농도에서 66.94%로 가장 높았다. Ammonium thiocyanate법에서 배양 1일 후 편백정유 원액과 편백정유 분획물 C, D, E의 항산화효과는 각각 72.0%, 71.2%, 71.9%, 71.0%였다. 항산화 활성분획인 G분획은 $\alpha$-terpineol, elemol, widdrol, $\alpha$-cadinol 등으로 구성되어 있었다.

• 약학회지
• /
• 제7권2_3호
• /
• pp.36-41
• /
• 1963

Cobalt thiocyanate ion에 미치는 영향을 연구하였다. Cobalt ion이 $NH_{4}CNS$ 용액에 의해서 생성되는 ion의 색의 transmittance는 확산에 의하여 적어지며, 황산존재하에서는 황산의 양과 Transmittance 사이에 비례적 관계가 있다. 염산 및 질산도 역시 Transmittance의 값에 영향을 미치기는 하나 염산의 경과에는 이 착 ion이 황산존재하보다 다소 불안정하며 질산에 의해서는 안정화가 극히 적어서 단시간내에 Perthiocyanuric acid로 인정되는 물질로 분해한다. 또한 그 Transmittance가 과량의 광산존재하에서 적어지는 현상으로 부터 $Co(SCN)^{2-n/_{$ n/의 n의 값이 커지는 것은 ether에 이행하는 SCN-을 Volhard 씨법으로 정량함으로서 확증하였다.

• 한국섬유공학회:학술대회논문집
• /
• 한국섬유공학회 1990년도 제2차 학술발표초록집
• /
• pp.28-28
• /
• 1990

• 한국환경보건학회지
• /
• 제19권2호
• /
• pp.40-45
• /
• 1993

A solvent extraction system of copper-thiocyanate complex into various types of alkylamines such as secondary, tertiary and quaternary ammonium salt for the determination of trace copper by atomic absorption spectrometry is presented. The maximum extraction of copper shows at 0.1 M-thiocyanate and single extraction with 10 ml of 1% amine-MIBK from 50 ml of aqueous solution is enough to be quantitative for micro amounts of copper. The effect of amine diluents and of diverse ions are also examined.

• Bulletin of the Korean Chemical Society
• /
• 제31권5호
• /
• pp.1419-1420
• /
• 2010

• 한국섬유공학회:학술대회논문집
• /
• 한국섬유공학회 1989년도 제2차 학술발표초록집
• /
• pp.28-29
• /
• 1989