• Journal of agriculture & life science
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• v.43 no.5
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• pp.43-46
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• 2009

The one of problems of plug seedlings production in winter season was a poor growth. This study was carried out to investigate the effects of treatments with yeast fertilizers on the growth of pepper seedlings in winter seasons. The plant height, internode length, and shoot and dry weight of pepper seedlings increased significantly by yeast fertilizers. The results showed that yeast fertilizer treatment could be more effective in soaking than foliar spray and that of dilution could be effective in $1,000{\times}$.

• Korean Journal of Poultry Science
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• v.29 no.3
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• pp.205-211
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• 2002

A feeding trial was conducted to study the effects of a live yeast, Pichia farinosa culture(PF), on the production performance and intestinal microflora in laying hens. One hundred and sixty ISA Brown layers, 21 weeks of age, were randomly allotted to four dietary treatments, with four replicates per treatment. Dietary treatments consisted of four levels (0, 0.1, 0.3, and 0.5%) of PF added to a com-soybean meal based diet. Egg production, egg weight, feed intake and fred conversion ratio(FCR) were measured. Egg qualifies were examined at 25th and 29th weeks of age. A metabolism trial was conducted following the feeding trial, during which intestinal microflora, nutrient digestibility and fecal NH3 gas emission were measured. Egg production of birds fed 0.1 and 0.3% PF were significantly higher than those from birds fed 0 and 0.5% PF(P<0.05). Daily egg mass of 0.3% PF increased significantly compared to that of 0% PF. There was no difference in egg weight among all treatments. Feed conversion ratio was significantly improved as the PF level increased. No significant difference was found in eggshell quality and Haugh unit at both 25 and 29 weeks of age. Viable count of ileal Lactobacillus spp. increased significantly as the rf level increased. However, the total number of yeast and anaerobes in ileum were similar among all treatments. Cecal Lactobacillus spp. and yeast counts showed no difference among all treatments. Fecal NH$_{3}$ gas emission of layers fed PF decreased significantly by the PF supplementation. From the result of this experiment, it could be concluded that dietary supplementation of the live yeast Pichia farinosa improves the laying performance and decreases the fecal ammonia gas emission.

• Korean Journal of Food Science and Technology
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• v.41 no.3
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• pp.296-301
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• 2009

In order to investigate the effect of different yeasts (La Parisienne (LP), Y18-2, Y54-3, Y90-2, Y90-9 and Y272-7) from nuruks on the quality of Glutinous rice wines, physicochemical properties and volatile flavor components were evaluated. Glutinous rice wines prepared with different yeasts were analyzed for ethanol, pH, total acid, amino acid, soluble solid, coloring degree, UV absorbance, reducing sugar, organic acid, free sugar and volatile compounds. After fermentation for 17 days, the ethanol contents ranged from 13.40 to 14.50%, while the total acid levels were from 0.33 to 0.44%. The amino acid contents in six samples ranged from 0.13 to 0.18%, while soluble solid contents ranged from 12.1 to $14.7^{\circ}Bx$. The glutinous rice wine prepared with LP showed the highest level of coloring degree, soluble solid and reducing sugar among six samples. Organic acid contents of the glutinous rice wine prepared with LP had the highest levels of lactic acid and acetic acid, while the glutinous rice wine prepared with Y90-9 had the highest level of succinic acid. In all glutinous rice wines tested, the most abundant free sugars were glucose followed by maltose. Volatile flavor components in the glutinous rice wines were identified by using GC-MSD. Nineteen esters, ten alcohols, eight acids, one aldehyde and one miscellaneous compound were identified in the glutinous rice wines. Using relative peak area, it was found that other than ethyl alcohol, hexadecanoic acid ethyl ester was the major component, predominantly found in the range of 2.73-10.41%. Phenylethyl alcohol, isoamyl alcohol, ethyl oleate, ethyl linoleate and tetradecanoic acid ethyl ester were some of the major volatile components present through the fermentation, respectively. Overall, it was shown that different yeast strains from nuruks greatly affected chemical and volatile characteristics of the glutinous rice wines.

• The Korean Journal of Mycology
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• v.49 no.1
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• pp.87-100
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• 2021

This study aimed to isolate wild yeasts obtained from flowers and soil of the Wolpyung park, Daejeon city and Gykpo beach, Buan, Jeollabuk-do in Korea, and to further characterize previously unrecorded wild yeast strains. In total, 88 strains of 62 different species of wild yeasts were isolated from 75 samples obtained from the Wolpyung park. Among these, six strains of Trichosporon moniliiforme and four strains each of Papiliotrema flavescens and Candida melibiosica were isolated. Additionally, 39 strains of 30 different species of wild yeasts were isolated from 35 samples collected from the Gykpo beach. Among the 127 isolated wild yeast strains, 10 strains, including Apiotrichum porosum ASCM32-1, were previously unrecorded. All the 10 previously unrecorded yeasts were oval or global in shape, and three strains, including Candida athensensis WP4-90-3, formed spores. Three strains, including Vishniacozyma taibaiensis WP13-2, were halophilic yeasts which grew in 15% NaCl-containing YPD(yeast extract-peptone-dextrose) medium. Five strains, including C. athensensis WP4-90-3, showed 15% ethanol resistance. Cell-free extracts from Candida oleophila WP5-19-1 and Wickerhamomyces anomalus HO9-2 showed the highest β-glucuronidase inhibitory activity (49.0%) and neutrophil elastase inhibitory activity (38.4%), respectively.

• Proceedings of the Korean Society for Applied Microbiology Conference
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• 1978.04a
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• pp.96.1-96
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• 1978

미생물학적 감산현상에 의하여 과실주중의 산미를 조절하기 위한 방법으로 효모에 의하여 사과산을 알코올로 분해하는 Maloalcohol 발효를 유도하고자 하여 본 연구를 하였다. 이미 발표된 Schizosaccharomyces pombe 0-77보다 단 시간에 강력히 사과산을 소비하는 효모균을 딸기의 과피로부터 분리, 동정하였다. 본 분리균을 J. Lodder의 “The Yeasts”에 준하여 동정한 바 분열법에 의하여 증식하며 포자를 형성하고 galactose 를 발효못하므로 Schizosacoha-romyces 속으로 분류하였다. 위균사를 잘 형성하며 melibiose를 발효하므로 Schizosaccharomyces japonicus와 일치 하였다. 그러나 변종의 동정은 어려우나 위균사의 형태로 보아 Schizosaccharomyces japonicus var. japonicus로 동정하였다.

• Proceedings of the Korean Information Science Society Conference
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• 2003.04c
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• pp.464-466
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• 2003

생명과학 관련 문서에서 자동으로 이벤트를 추출하는 것은 관련 연구자들의 연구에 많은 도움을 줄 수 있다. 본 논문에서는 생명과학 관련 문서 중 특히 효모와 관련된 문서를 대상으로 간단한 자연언어 처리 기술을 적용하여 유의미한 정보를 추출한 결과를 제시하고자 한다. 실험은 효모 관련 문서에서 고빈도의 이벤트 표현 동사에 대한 패턴 정보를 조사한 후, 패턴 정보에 의거하여 이벤트를 추출하였다. 평가 결과, 비교적 간단한 자연언어 처리 기술 안으로도 유의미한 정보들을 추출할 수 있었다.

• Proceedings of the Korean Society for Applied Microbiology Conference
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• 1976.04a
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• pp.184.1-184
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• 1976

고온성방면균의 이용가능성을 검토할 목적으로 전보에서는 내열성 $\alpha-amylase$ 생산능이 극히 우수한 균주를 전국토양시료로 부터 분리하여 균주의 형태학적성질과 아울러 $\alpha-amylase$ 생산을 위한 배양조건을 검토하였으며 본보에서는 생산된 $\alpha-amylase의$ 효모학적 기본성질을 조사하여 그 결과를 보고코져 한다.

• Korean Journal of Microbiology
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• v.28 no.2
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• pp.114-119
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• 1990

A yeast chromosomal superkiller gene (SK13) was cloned and expressed in $ski3^{-}$ Saccharomyces cerevisiae strains. The gene was fused to the structural region of E. coli lacZ gene at its C-terminus in a yeast-E. coli shuttle vector, pSR605. The fused gene complemented $ski3^{-}$ strains with SK13 activity and the quantitative level of expression was measured as determined by assaying $\beta$-galactosidase activity. The SDS-polyacrylamide gel electrophoresis and the Western blot analysis of this fused protein showed the immuno-reacted bands with a protein of the estimated molecular size (ca.250Kd).

• Microbiology and Biotechnology Letters
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• v.14 no.2
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• pp.199-203
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• 1986

A tubular tormentor was prepared by packing the wood chips and pumping the yeast solution of Saccharomyces formosensis in a tubular column. Investigations to characterize the ethanol fermentation in the immobilized cell tubular fermentor and to compare such a fermentors with other type fermentors were undertaken. Ethanol productivity of 24.4g EtOH/$\ell$.hr has been obtained from glucose substrate. This productivity is higher or compared favourably with that reported in immobilized bio-reactors.

• The Korean Journal of Mycology
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• v.20 no.3
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• pp.269-272
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• 1992

208 yeast strains were isolated from air at El-Minia city, Egypt. Using 22 morphologi cal and physiological merkmals, these strains were identified and assignned to eight species belonging to seven genera. Rhodotorula mucilaginosa and Cryptococcus albidus were the most dominant species followed by Debaryomyces hansenii. These yeast species occurred regularly, whereas other species appeared sporadically. Rh. rubra, Saccharomyces kluyveri and Rh. aurantiaca were also isolated from the sampled air. The results of this study showed that time, hight and area of air sampling affect composition and total counts of yeast microflora in the air.