• 한국식품위생안전성학회지
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• 제39권3호
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• pp.250-259
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• 2024

발효주의 잔류물질 실태조사를 위해 울산지역에서 유통되는 발효주 150건을 수거하여 잔류농약 400종과 중금속 납, 카드뮴, 수은을 분석하였다. 잔류농약 분석 결과, 102건(68%)의 검출을 나타냈으며 검출된 농약 종류는 35종으로 그 중 원료 농산물의 기준이 없는 농약은 4종이 검출되었다. 발효주 종류별로 비교하면 와인이 60건의 검사 중 54건(90%)으로 가장 많은 잔류농약이 검출되었고 맥주는 60건 중 37건(61.7%), 막걸리는 30건 중 11건(36.7%)이 검출되었다. 발효주에 대한 중금속 분석 결과는 납 73건(48.7%), 카드뮴은 9건(6.0%), 수은은 36건(24.0%)을 나타내었다. 납은 73건의 검출 중 와인이 57건(78.1%)을 차지해 가장 높은 검출을 나타내었고 카드뮴과 수은은 검출된 9건, 36건 중 막걸리가 7건(77.8%), 13건(36.1%)으로 가장 많이 검출되었다. 각 품목에서 검출된 잔류농약 및 중금속 항목에 대해 인체노출량 평가결과는 모두 1% 미만으로 안전한 것으로 나타났다.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2001년도 추계학술발표대회
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• pp.311-314
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• 2001

10%의 아카시아꽃을 함유한 덧밥에 누룩을 15% 첨가하고 Saccharomyces cerevisiae를 이용하여 제조한 주모를 첨가한 후 $25^{\circ}C$에서 20일간 발효시켰을 때 에탄올이 가장 많이 생성되었다. 또한, 기호도와 색상은 아카시아꽃 15% 첨가하여 제조한 발효주가 가장 좋았고 전자공여능과 아질산염 제거활성이 무첨가 발효주 보다 강하였다.

• Journal of Microbiology and Biotechnology
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• 제12권5호
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• pp.722-728
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• 2002

Eight strains producing bacterial cellulose (BC) were isolated from rotten fruits and traditionally fermented vinegars. One of the isolated strains from the rotten grape in Gwangju, Korea, maintained a relatively stable BC production in shaking cultures. This isolated strain proved to be Acetobacter xylinum, based on several biochemical and morphological tests. It was shown that the slant-baffled flask was more efficient than the conventional flask for the BC production in shaking cultures. To determine the most suitable carbon and nitrogen sources for the production of BC, various compounds were examined. Fructose was found to be the most effective carbon source with an optimal concentration of 2%. Mixed carbon source (glucose:fructose=1:3) was also better than glucose or fructose alone. Optimal nitrogen source, when basal medium was used, was 10% (v/v) com steep liquor (CSL). When com steep liquor was used with a mixed carbon source (glucose:fructose=1 :3),4% CSL exhibited the best BC production. Based on these results, a defined medium was developed for the BC production by Acetobacter xylinum KJ-1. When this medium was used under optimal culture conditions, the BC production was 7.2 g/1, which was approximately 3 times higher than that with the traditional HS medium.

• 한국식품과학회지
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• 제47권5호
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• pp.579-585
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• 2015

유기산(acetic acid, citric acid, lactic acid)이 쌀 증류식 소주의 양조특성에 미치는 영향을 살펴보았다. 유기산 첨가에 의해서 술덧의 pH는 4.2에서 3.73-3.97, 산도는 5.06에서 8.13-9.98, 아미노산도는 2.56에서 2.27-2.34, 휘발산은 66.0에서 89.6-124.8 ppm으로 변하였다. 알코올 함량은 대조구는 17.8%, 첨가구는 각각 17.0, 17.8, 17.6%이었다. 술덧에 남아있는 acetic acid는 첨가된 양보다 증가한 반면 citric acid와 lactic acid는 첨가된 양보다 각각 1.30, 40.57% 감소되었다. pH변화에 의해 프로테이스 활성이 감소하였고 질소화합물 총량은 유기산 첨가에 의해서 각각 13.1, 36.9, 30.9% 감소하였다. 유리아미노산 중 alanine acid, arginine acid, glutamic acid가 질소화합물 총량의 10% 이상씩 함유되어 있었고 유기산 첨가에 의해서 methionine은 2.8-29.4%, cysteine은 12.5-30.8% 감소되었다. 첨가된 유기산은 증류효율에 영향을 미치지 않았으며 citric 및 lactic acid에 의해서 증류원액(알코올 함량 40%)의 TBA 값이 2.2-3.6배 낮아졌다. 알코올 함량이 25%로 조절된 소주의 isobutanol (B), isoamyl alcohol (A), 1-propanol (P) 함량의 합은 각각 1,041.47, 979.50, 961.48 ppm으로 대조구(935.27 ppm)보다 증가되었다. 유기산 첨가에 의해서 소주의 A/P비, A/B비, B/P비가 변하였으며 acetaldehyde 함량의 감소를 가져왔다.

• 현장농수산연구지
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• 제25권4호
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• pp.158-164
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• 2024

With the steady growth in the scale of the domestic traditional liquor industry, the interest in makgeolli has also been increasing. As the demand for makgeolli increases, interest in manufacturing differentiated makgeolli by adding additional raw materials such as fruits is increasing. In this study, makgeolli with low storage persimmon juice was manufactured, and the sweet taste of persimmon was imparted without adding sweeteners. Unsweetened, high-quality persimmon makgeolli with an alcohol content of 15% or more was manufactured and its quality characteristics were analyzed. Yeast was selected after producing fermented yeast by treating domestic isolated yeast and commercial yeast. Upon producing fermented yeast, persimmon makgeolli was manufactured by varying the amount of persimmon juice added to the fermented yeast. As a result of analyzing the quality characteristics of persimmon makgeolli, the pH was 4.02-4.25, the total acid (citric acid, %) was 0.30-0.43, the amino acidity (glycine, %) range was 0.05-0.15, and the alcohol content (%) was 15.64-18.48.(p<0.05). Reducing sugar (%) was 1.82-12.68 and total sugar (%) was 1.41-10.42, exhibiting a tendency to increase as the amount of reducing sugar and total sugar and the amount of juice added increased (p<0.05). Considering the sensory characteristics, a sample with 50% persimmon juice added showed a significantly higher residual sugar content, and the residual sugar content had a positive effect on the sensory characteristics. Therefore, 50% persimmon juice was added when making persimmon makgeolli. It is suitable for high-quality, non-sweetened persimmon makgeolli that preserves the taste of persimmon, which suits the consumers'taste.

• 한국식품위생안전성학회지
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• 제4권3호
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• pp.257-261
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• 1989

1989년도 시판 중인 위스키, 브랜디 등 23종의 국산증류주에 대하여 고급 알콜 함량을 분석하고 조성비를 평가하였다. 얻어진 결과는 다음과 같다. 1. 위스키에 있어서 원액혼합비율이 높을수록 고급알콜의 함량이 높았으며, iso-amyl alcohol과 iso-butanol 함량의 비는 낮은 경향을 나타내었다. 2. 진, 럼, 보드카류는 고급 알콜 함량이 낮았으며, SA에서는 iso-butano, 그 외에서는 n-propanol만이 확인되었다. 3. 위스키류나 브랜디에서는 n-propanol , iso-butanol , iso-amyl alcohol의 고급 알콜 3종이 확인되었다.

• 한국식품영양학회지
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• 제1권2호
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• pp.102-107
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• 1988

Production of calcium lactate very useful for medical supplies of Ca-therapy was obtained by lactic acid fermentation of lactobacillus sporogenes, a spore forming lactic acid bacterium. Corn steep liquor 1%, soybean enzyme hydrolysate 3%, yeast extract powder 2% can substitute for yeast extract and peptone as nutrient sort traces in fermentation medium using 10% glucose concentration. In the calcium lactate production medium containing yeast extract powder 2%, glucose 18%, CaCO3 12%, the lactic acid fermentation was carried out at 45$^{\circ}C$ for 4days with continuous agitation of 100 rpm. As results, fermentation yield was 97.5%. The five steps such as protein coagulation, decolorizing evaporating, crystallizing, and drying were carried out to harvest calcium lactate from 10l of supernatant of fermented medium to be removed cell and CaCO3. As results, 2065.0g of white crystal calcium lactate dihyrate was recovered and a yield of 84.9% was obtained.

• 한국식품저장유통학회지
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• 제7권1호
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• pp.94-98
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• 2000

To produce liquor and vinegar using potatoes needs to liquefy and sacchrify potatoes . So selecting the efficient fermenter for proceeding these process successfully is very important . This study was investigated several fermenter and crush types of potatoes for alcohol fermentation. Final sugar contents was high in pottoes saccharificatiion by nuruk or crude enzyme. But pure enzyme and blucoamylase ended liquefaction and saccharificatiion within short ime. So complex type fermenter mixed several fermenters was superior to single type fermenter. Complexfermenter III using crude enzyme and glucoamyulase saccharificed excellently potatoes with 150% of water contents by treatment of 3 hours. Through alcohol fermentation using pressure steamed potatoes (PSP), it could be obtained 6.4% , 150%, of alcohol content and yield. However to perform a series process efficiently , crush steamed pottoes (CSP) was suitable. When it was fermented after saccharification using crush steamed potatoes and complex fermenter III, it could be obtained 6.6% of alcohol and 6.7% of acidity.

• 한국응용과학기술학회지
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• 제40권4호
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• pp.699-709
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• 2023

This study is to establish optimizing condition of alcohol fermentation in vinegar production with aronia, to confirm whether this can be industrially used, and to compare and analyze a change in anti-oxidative activity and quality characteristic according to alcohol fermentation of aronia. The optimized conditions for alcohol fermentation were as follows: Saccharomyces cerevisiae 5645 of yeast strain, a 5% inoculum size, aronia juice with a brix value of 14, and a glucose content of 7%. As a result to conduct scale up with optimizing conditions of alcohol fermentation of aronia, 8 days (192 hrs) of total alcohol fermentation time and 7.4% of the final alcohol content. The harvest volume accounted for approximately 90.2% with a loss of about 2.8%. As a result of antioxidant test, anti-oxidative activity of alcohol fermented liquor is lower than anti-oxidative activity of aronia extract, because of the decrease of antioxidant by oxidation of the fermentation process. However, the decrease of tannin by the fermentation process reduces acerbity of aronia, so increases overall preference

• 한국식품과학회지
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• 제49권5호
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• pp.486-493
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• 2017

본 연구는 '2015 우리술 품평회'에 본선 진출한 증류 소주 7종의 이화학적, 관능적 특성을 도출하여 입상주와 비입상주 간의 차이를 비교하고자 하였다. 입상주 4종, 비입상주 3종으로 총 7종의 증류 소주를 사용하였으며, 이화학적 특성의 경우 입상주에서 알코올 함량(38.4%), pH(3.96)가 유의적으로 낮게 나타났다. 관능적 특성 도출을 위하여 묘사분석을 실시한 결과, 입상주의 경우 쓴맛, 후미쓴맛, 고소한향, 아세톤향, 청주향/향미, 간장향미, 전반맛 강도가 강하게 발현되었다. 소비자 기호도 조사 결과, 입상주보다 비입상주의 기호도가 더 높게 평가되었는데 이는 소비자들이 평소에 접하던 희석 소주와 비슷한 알코올 함량(17-18%)을 가지는 시료에 더 높은 점수를 준 것으로 판단된다. 본 연구결과를 통해 국내 시판 증류 소주의 이화학적 특성과 관능적 특성, 그리고 소비자 기호도 조사의 결과까지 고려한다면 향후 신제품 개발 및 품질 향상에 도움이 될 것이라 판단된다.