• Asian-Australasian Journal of Animal Sciences
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• v.25 no.3
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• pp.401-409
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• 2012

The study was conducted to investigate the chemical composition of distillery yeast sludge and its inclusion in broiler diets to replace canola meal. Raw distillery yeast sludge was washed with water using water and sludge in the ratio 6:1, respectively. Proximate analysis of raw distillery yeast sludge and washed distillery sludge was carried out for crude protein (CP), true protein (TP), ether extract (EE), ash, acid insoluble ash and nitrogen free extract (NFE) determination. Mineral contents and amino acid profile of raw distillery yeast sludge and washed distillery sludge were also determined. After chemical evaluation, four iso-caloric and iso-nitrogenous broiler starter and finisher diets were prepared in mash form using 0 (control), 4, 8 and 12% levels of washed distillery sludge replacing canola meal. One hundred and twenty day-old broiler chicks were randomly distributed into 12 experimental units in such a way that each diet was offered to three experimental units, each comprising of 10 chicks. It was observed that washing affected the nutrients either by decreasing or increasing their concentration. It decreased the total mineral contents whereas CP, TP, EE and NFE contents increased. Washing also increased amino acid profile. Average feed intake and weight gain were higher in birds fed diet containing 8% washed distillery sludge and lower in birds fed diet containing 0% washed distillery sludge. Feed cost per kg live weight gain decreased significantly as the level of washed distillery sludge was increased in the diet. Average heart, liver and pancreas weights decreased with increased level of washed distillery sludge in the diet. The study revealed that after washing, distillery yeast sludge can be used successfully in broiler diets up to the level of 8% without any adverse effect on broiler's performance.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.8
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• pp.3887-3896
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• 2013

The aim of this study was to select yeast strain for quality optimization of distilled spirit which is prepared using rice. Five yeasts strains were compared for their brewing characteristics and showed normal fermentation pattern, but songcheon yeast(Y1) and distillery yeast(Y5) revealed higher fermentation ability than other samples tested. The analyzed results of fermented mashing showed that the distillery yeasts(Y4, Y5) had significantly much higher alcohol content, and songcheon yeast(Y1), distillery yeasts(Y4, Y5) had significantly higher ester content than other samples tested respectively, while the distillery yeasts(Y3, Y4, Y5) had significantly higher organic acid content than other samples tested. The analyzed results of distilled spirits which were distilled using copper distillery apparatus showed that the songcheon yeast(Y1) and distillery yeast(Y5) had a higher yield compared to other samples tested. In addition, the results of the aroma compounds such as ester and higher alcohol of distilled spirits among the five yeasts tested were similar to the analyzed results of fermented mashing. Siha aktivhefe 6 brennereihefe(Y5) indicated the highest overall preference including sensory evaluation and was selected as best yeast strain for quality optimization of distilled spirit which is prepared using rice.

• KSBB Journal
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• v.18 no.3
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• pp.197-201
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• 2003

Automatic addition of glucose, ammonium and phosphate to alcohol distillery wastewater and their control at low concentrations have been carried increase the cell concentration of a baker's yeast cultivated in the wastewater. Glucose was automatically added using dissolved oxygen as the control parameter, and maintained below 300 mg/L. Ammonium was automatically added by a pH-stat method and maintained in the low range of 12.6~17.4 mM. An automated FIA system, which used an ascorbic acid-based method was developed for the automatic analysis nad addition of phosphate. With this system, the phosphate concentration was succesfully analysed and controlled afrer 19.4 hr in the range 23.3~43.4 mg/L. The cell concentration was increased by 33.0-fold by the addition of these three nutrients. The overall specific growth rate of the yeast was 0.19 $hr^{-1}$.

• Proceedings of the Zoological Society Korea Conference
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• 1997.10b
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• pp.317-317
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• 1997

No Abstract, See Full Text

• KSBB Journal
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• v.15 no.2
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• pp.134-138
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• 2000

Addition of carbon and nitrogen source to an alcohol distillery wastewater was tried to increase the cell concentration of a b baker's yeast cultivated in that wastewater. Carbon was found to be primary limiting nutrient and nitrogen secondary limiting o one. Glucose addition increased the cell concentration 1.3 times higher than no addition, and both glucose and $(NH_4)_2S0_4$ a addition did 5.8 times. A fed-batch cultivation by the automatic addition of glucose and ammonium was executed. Added g glu$\infty$se was automatically controlled to low concentration by a method using DO as control parameter. Ammonium was a automatically added as NH40H used as pH $\infty$ntrol agent after initiating glucose addition. By this simple cultivation method t the cell concentration $\infty$내d be efficiently increased from 2.6g/L to 12.0g/L, and maximum specific growth rate and biomass y yield to glu$\infty$se were $0.18hr^{-1}$ and about 0.54g/g respectively. By increasing cell concentration, COD of the wastewater m media could be additionally reduced by about 22%.

• 한국균학회소식:학술대회논문집
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• 2014.10a
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• pp.23-23
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• 2014

There are many yeast strains have been discovered for industrial usage in global scale. In the point of view for the alcoholic fermentation performance and producing alcoholic beverage products, recently many countries have known about the importance of microorganisms as a valuable resource. Discovered with well performed yeasts have potential industrial application in diverse ways such as foods, beverages, cosmetics, pharmaceutical functions, and so on. In Korea, the yeast research has not been sufficiently performed especially for distilled spirits industry. As a result, not so little manufacturers use exotic yeasts from overseas even included the expensive royalties. Besides of those, to produce distilled spirits, many manufacturers do not use specialized yeast for distilled spirits. Distiller's characterized yeasts such as whisky, brandy, vodka, Japanese shochu and awamori, are all well-known industrialized. For decades, the distillers, except us, have selected, developed, and practised yeasts in accordance with distilled spirits characters. This study is about selection and industrial application of yeasts for the Korean pot distilled spirits. Finally 7 yeast strains were selected among over 1,000 yeasts from the traditional Nuruks, through the essential related tests based on brewing and distilling science. The selected yeasts show the appropriate characteristics of distilled spirits. The result of this study could help our distilled spirits industry be activated and stand independent from the exotic microbes.

• KSBB Journal
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• v.15 no.2
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• pp.139-144
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• 2000

Automatic addition of glucose and ammonium to an alcohol distille깨 wastewater and the control of them at low $\infty$ncentration were tried to efficiently increase the cell concentration of a baker's yeast c비tivated in that wastewater. Added g glucose was indirectly controlled to less than 116 mg/L by a method which used DO as control parameter. Ammonium was a automatically measured and controlled within the range of 7.0~27.7 mM by a homemade on-line system which adopted FIA a as measurement method. Maximum specific growth rate and biomass yield to glucose were $0.21 hr^{-1}$ and about 0.78 g/g, w which were significantly increased values in contrast to those of an experiment without ammonium control. Biomass yield to a ammonium was 11.3 gIg. Cell cone엉ntration could be increased from 2.6 g/L to 18.5 g/L by the add ion of glucose and a ammonium.

• KSBB Journal
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• v.8 no.2
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• pp.172-177
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• 1993

In order to reduce BOD of wastewater from alcohol distillery manufactory, the production of single cell lipid was attempted. Among five yeast strains tested, Rhodotorula glutinis was most desirable for lipid production. Wastewater was treated with 2N NaOH and used as a medium. The optimum pH and temperature for lipid production were found to be 5.0 and $30^{\circ}C$, respectively. The addition of monobasic phosphate was good for cultivation of Rhodotorula glutinis. The C/N ratio was an important factor for lipid production and composition. The best C/N ratio was 50 for the production of single cell lipid. By cultivation Rhodctorula glutinis for 4 days, 4g/L of single cell lipid was harvested and BOD of wastewater reduced by 88.7%.