• Title/Summary/Keyword: alcohol contents

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Analysis of Volatile Components in Korean Rice Wine by the Addition of Yulmoo (탁주 제조 시 율무 첨가에 따른 휘발성 성분의 분석)

  • 신순영;서수환;조원대;이효구;황한준
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.32 no.8
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    • pp.1206-1213
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    • 2003
  • In order to use nutraceutical components in Yulmoo (Coix lachryma-jobi L. var. ma-yuen Stapf), the acceptability of Yulmoo for Takju (Korean rice wine) was examined in terms of the production of volatile components. When Yulmoo was added to the Takju made by commercial koji as a substitute of starch at 0 (rice 100%), 15, 30, 60, and 100%, the ethanol content slightly increased to 13.6, 15.2, 15.2, 14.1, and 13.8%, the Production of isobutanol and iso-imyl alcohol increased as the amount of Yulmoo increased. While the use of Yulmoo to the Takju as the nuruk (Korean traditional koji), inoculated with Aspergillus kawachii (AK) and Rhizopu japonicus (RJ), decreased the contents of n-propanol, iso-butanol, and iso-amyl alcohol as well as the contents of ethanol from 14.3% to 11.2 [AK], 7.5 [RJ], and 10.4% [AK + RJ]. The Yulmoo nuruk in Takju increased the production of acetaldehyde and ethyl acetate indicating the negative effect in the organoleptic evaluation. It was determined that the addition of Yulmoo as a starch source or as nuruk has a critical effect on the production of fusel oils and other volatile compounds in Takju fermentation.

Brewing and Quality Characteristics of New Grape Cultivar 'Okrang' Wine in Fermentation Process (포도 신품종 '옥랑'을 이용한 와인 발효 및 품질 특성)

  • Park, Hye Jin;Choi, Wonil;Park, Jung-Mi;Jeong, Changwon;Kim, Sidong;Yoon, Hyang-Sik
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.46 no.5
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    • pp.622-629
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    • 2017
  • This study was carried out to investigate the effects of cold maceration and heat treatment prior to alcohol fermentation on the quality characteristics of wine made from Okrang grape cultivar. The results of this study show that alcohol contents of wines increased as fermentation period increased, whereas $^{\circ}Brix$ values decreased. The pH levels of wines ranged from 3.17 to 3.42 while the total acidities of wines ranged from 0.49~0.99%. The free sugar contents of wines tended to decrease as fermentation period increased. In particular, free sugar content of wine pre-treated at low temperature prior to alcohol fermentation slowly. Total polyphenol content of wine heat-treated prior to alcohol fermentation was higher than those of other wines and reached a maximum value after fermentation for 2 days. Campbell Early wine showed the strongest antioxidant effect, measured based on DPPH free radical scavenging activity, followed by Okrang wine pressing after fermentation. These results indicate that pre-treatment before wine fermentation greatly affects wine quality and biofunctional activities.

Effect of Ratio of Maesil(Prunus mume) and Alcohol on Quality Changes of Maesil Liqueur during Leaching and Ripening (매실과 알코올의 담금비가 매실 리큐르 숙성중의 품질 변화에 미치는 효과)

  • Park, La-Young;Chae, Myeung-Hee;Lee, Shin-Ho
    • Food Science and Preservation
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    • v.14 no.6
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    • pp.645-649
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    • 2007
  • The effects of the ratio of 45% alcohol and Maesil(Prumus mume) (1:1, 1:2, 1:3, w/v) on quality changes of Maesil liqueur during leaching and ripening for 5 months were examined. Total acidity increased with an increase ratio of Maesil and leaching and ripening periods. The pH increased as increase ratio of alcohol. The color of liqueur became dark as an increase ratio of Maesil and leaching and ripening periods. The contents of alcohol after leaching and ripening for 2 months were 24.3%(1:1), 32.2%(1:2), and 36.0%(1:3), respectively and decreased as an increase the ratio of Maesil. The contents of reducing sugar and polyphenol in the liqueur increased with an increase ratio of Maesil and leaching and ripening periods. The major components of free sugar in the liqueur were fructose, glucose, sucrose and maltose but sucrose and maltose did not detect regardless the ratio of Maesil after leaching and ripening for 2 months. The major components of organic acid in the liqueur were citric, lactic, malic, and acetic acids. The total amount of organic acid increased as an increase the ratio of Maesil but the changes of individual organic acid in the liqueur contained different ratio of Maesil showed the different tendency each other.

Effects of Chronic Consumption of Liquor prepared with Gastrodiae rhizoma on Antioxidant Activity in Brain Tissue of Rats (천마 침출약용주의 만성적인 섭취가 뇌 조직에서 항산화력에 미치는 영향)

  • Yun, In-Jeong;Kong, Hyun-Joo;Jang, Jung-Hyeon;Yang, Kyung-Mi
    • Journal of the East Asian Society of Dietary Life
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    • v.26 no.6
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    • pp.531-542
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    • 2016
  • This experiment was conducted to verify whether or not chronic consumption of liquor prepared with Gastrodiae rhizoma exhibits antioxidant activity in brain tissue of rats. In the experiment, male Sprague-Dawley rats were given a liquid diet containing 6% (GA6), 18% (GA18), and 36% (GA36) of total calories as liquor for 6 weeks. The control rats (GAC6, GAC18, GAC36) received an isocaloric diet containing Soju instead of liquor. Caloric intakes and body weight gains of the 36% groups were significantly lower than those of the 6% and 18% groups (p<0.05), whereas alcohol intakes were significantly high in the 36% group (p<0.05). MDA contents of plasma and brain showed a positive correlation with alcohol intakes of the liquor and Soju consuming groups. Especially, contents of MDA were significantly higher in the 18% and 36% groups than the 6% group (p<0.05). SOD activities of serum and brain were significantly highest in the 18% group, and they tended to be higher in the liquor consuming groups compared with the control group. Catalase activity of serum showed no significant changes in the three groups consuming liquor, and catalase activity of brain tissue significantly increased in the GA18 group compared with the control group (p<0.05). In the liquor consuming groups, TAC level of serum tended to be higher in the GA36 group compared with the control group (p<0.05). However, TAC level of brain tissue showed no significant changes between the liquor consuming and control groups. These results show that as alcohol intake increased by chronic administration of liquor and Soju, brain tissue of rats was damaged more due to oxidative stress. However, a liquid diet containing 18% of total calories as liquor instead of Soju is expected to have a protective effect on brain damage induced by oxidative stress.

Studies on the Special Components of the Korean Tea-leaves (한국산(韓國産) 다엽(茶葉)의 특수성분(特殊成分)에 관(關)한 연구(硏究))

  • Kim, D.Y.;Jung, G.H.;Kim, K.;Ree, C.O.;Park, K.H.
    • Applied Biological Chemistry
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    • v.22 no.2
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    • pp.97-100
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    • 1979
  • Tea leaves were harvested from the two cultivating sites in May, July and September. Tannin and caffeine, main factors for the quality of tea products, were analyzed and compared with the wild tea leaves and the cultivated. Aroma components of two varieties of tea leaves harvested in September were analyzed by gas-chromatographic method. The results obtained were as follows. 1. Tannin contents were 10-14% same as Chinese tea variety and increased gradually to September and showed no difference between the wild tea leaves and the cultivated. 2. Caffeine contents were 1.5-3% same as other Chinese variety and showed no difference between the wild tea leaves and the cultivated. 3. Aroma components showed nearly similar patterns between two different tea varieties and were identified as phenol, iso-butyl aldehyde, n-butyl aldehyde, iso-valer aldehyde, n-butyl alcohol, iso-amyl alcohol, iso-valeic acid, benzaldehyde, n-valeric acid and linalool among 32 peaks.

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Antioxidant and Alcohol Dehydrogenase Activity of Water Extracts From Abalone Containing Medicinal Plants (전복과 천연 식물류 복합물의 항산화 및 알코올대사 효소 활성)

  • Shin, Jung-Hye;Lee, Soo-Jung;Choi, Duk-Ju;Kang, Min-Jung;Sung, Nak-Ju
    • Korean journal of food and cookery science
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    • v.24 no.2
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    • pp.182-187
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    • 2008
  • This study was performed to evaluate the possible production of a functional beverage derived from abalone and with several plants (AP). Five types of AP composites were prepared having different medicinal plant compositions (AP- I : abalone, garlic, jujube, Chinese matrimony fruit, dried orange peel, licorice root, zinger, honey; AP- II: abalone, garlic, black bean, Chinese matrimony fruit, cornus fruit, licorice root, zinger, honey; AP-III : abalone, jujube, arrow root, milk vetch, dried orange peel, licorice root, zinger, honey; AP-N: abalone, black bean, arrow root, milk vetch, cornus fruit, liquorice root, zinger, honey; AP-V : abalone, garlic, Chinese matrimony fruit, milk vetch, licorice root, zinger, honey). In vitro analysis were performed to examine the antioxidant contents and alcohol dehydrogenase activities of the composites. AP- II had the highest total phenol contents ($28.55{\pm}1.56\;mg/l00\;g$), and AP- V the highest level of flavonoids ($47.61{\pm}1.58\;mg/l00\;g$). At $78.89{\pm}0.16%$, AP- V displayed the strongest electron donating ability followed by AP-II($57.99{\pm}0.21%$) and API ($37.66{\pm}0.20%$). Reducing power was also significantly higher in AP- V. The Hydroxyl radical scavenging and SOD-like activities of all composites were less than 15% and 20%, respectively. At 12.5% alcohol concentration, ADH activity ranged from $114.47{\pm}2.18{\sim}121.39{\pm}4.36%$ and ALDH activity ranged from $100.04{\pm}2.90{\sim}129.54{\pm}4.80%$; AP- I , AP- II, and AP- Vin 12.5% of alcoholic concentration. The composites of AP- I , AP- II, and AP- V, all containing garlic and Chinese matrimony fruit, were significantly stronger than AP-III and AP-N. Finally, also at 12.5% alcoholic concentration, the ALDH activity of AP- V was higher than its ADH activity.

Decrease in Intrinsic Objectionable Odors and Change of Gastrodin Contents in Lactic acid Treated Gastrodia elate Blume (젖산 처리에 따른 천마의 불쾌취 감소 및 Gastrodin 함량 변화)

  • Chang, Young-Nam;Ahn, Byung-Yong
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.12 no.11
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    • pp.5056-5062
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    • 2011
  • This study was carried out to decrease intrinsic objectionable odor, bitter and fishy taste and change the biobeneficial components (gastrodin and p-hydroxybenzyl alcohol) of Gastrodia elate Blume. First of all, Gastrodia elata Blume. was dipped in the rice-washed water and rice-bran solution fermented with Lactobacillus brevis and Lactobacillus plantarum. The objectionable odor, bitter and fishy taste were decreased considerably with the treatments. Gastrodia elata Blume. was also dipped in organic acids (10 different varieties). The result showed that the most effective treatment to reduce objectionable odor, bitter and fishy taste of Gastrodia elata Blume. was treated with 1.0% lactic acid. Eleven different kinds of volatile components such as acetaldehyde, formic acid ethyl ester, acetic acid ethyl ester, 4-methylphenol and 3-hydroxy-2-butanone were separated from Gastrodia elata Blume when treated with or without 1.0% lactic acid. 4-Methylphenol, which is an objectionable odor in Gastrodia elata Blume, decreased with the treatment of lactic acid. While the contents of gastrodin and p-hydroxybenzyl alcohol in Gastrodia elata Blume. increased by 20% when dipped in 1.0% lactic acid solution for 24 hours and steamed at $98^{\circ}C$ for 4 hours.

Granulation of Fine Zeolite Powder by Adding Polyvinyl Alcohol (Polyvinyl Alcohol첨가(添加)에 의한 Zeolite미분(微粉)의 입상화(粒狀化))

  • Choi, Jyung;Choi, Choong Ryeol;Lee, Dong Hoon
    • Korean Journal of Soil Science and Fertilizer
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    • v.28 no.2
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    • pp.123-129
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    • 1995
  • For the propose of increasing the value added, zeolite powder was granulated by adding Polyvinyl Alcohol (PVA) as cementing material. The optimal concentration of PVA for granulation and the physical properties of the prepared granule were investigated. Four percent PVA stock solution was made by adding distilled water at $90^{\circ}C$ water bath and incorporated with zeolite. The contents of water stable granule above 2.0mm in diameter was 98.0% in the case of 0.3% PVA addition and almost 100% in the case of 0.6% PVA addition. Increasing PVA concentration of granules increased the hardness and decreased the infiltration rate and the maximum water holding capacity of granules, However, the drying method hardly affected the physical properties of granules. With the increase in the mixing ratios of kaolinite or bentonite to zeolite, the hardness of granules increased but high water contents of granules resulted in rapid decrease in the hardness of granules. However, when smectite or perlite was mixed with zeolite, the increase in mixing ratios to zeolite resulted in the decrease in hardness, the increase in the infilteration rate and maximum water holding capacity of granules.

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A Study to Develop Food and Nutrition Cyberclass Contents for Nonmajor University Students (대학에서의 식품과 영양 교양 과목의 사이버 컨텐츠 개발을 위한 조사)

  • 박명순;김성애
    • Korean Journal of Community Nutrition
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    • v.4 no.4
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    • pp.539-545
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    • 1999
  • This study was intended to develop food and nutrition cyberclass contents for nonmajor students at university. We investigated universities which offered food and nutrition related courses in 1998 by a telephone survey in order to select the most appropriate lecture contents for the nonmajor university students. We investigated to select the most needed lecture contents for the students, 15 questions on evaluation of cyberclasses which they took. The number of subjects were 140 students of ‘C’university who registered for nonmajor food and nutrition course in 1998. Among 140 students, 80 were cyberclass students and 60 were non cyberclass students. The results of the survey were as following : Fifty-five universities out of 62 had curriculums on food and nutrition in 1998 and 36,802 students attended the non major food and nutrition lectures. 84.9% of the respondents had their own computes and the main application mostly used was word processing. Additionally, 33.3% of them used on-line communications and 81.4% of them used internet. The most interesting subject of the respondents was ‘disease and nutrition management’. The male respondents were concerned more about ‘alcohol and health’, whereas the females were concerned about ‘obesity and weight control’.

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Effects of Flower of Pueraria lobata on Lipid Peroxidation and Activities of Alcohol Metabolic Enzymes in Alcohol-treated Rats (갈화가 에탄올을 투여한 흰쥐의 지질과산화와 알코올 대사효소의 활성도에 미치는 영향)

  • 이정숙;김나영;이경희;김갑순;박희준;최종원;김석화
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.29 no.5
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    • pp.935-942
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    • 2000
  • This study was designed to investigate the effect of flower of Pueraria lobata on liped peroxidation and activities of alcohol metabolic enzymes in alcohol-treated rats. Male Spra gue-Dawley rats were given 25% ethanol (Alcohol), 25% ethanol and 5 mg tectorigenin/kg B.W.(Alc.-Tec), 25% ethanol and 5mg kaikasaponin III/kg B.W. (Alc-Kai). The contents of serum total lipid, triglyceride and phospholipid were increased by ethanol treatment and were lower in the Alc.-Tec and Alc.-Kai group than in the Alcohol group. Decreased serum HDL-cholesterol by alcohol treatment was recovered by tectorigenin and kaikasaponin III. Microsomal cytochrome P-450, aniline hydroxylase and aminopyrine N-demethylase activities were increased by ethanol and were lower in the Alc. Tec and Alc.-Kai group than in the Alcohol group. Activity of hepatic alcohol dehydrogenase was increased by ethanol and was higher in the Alc.-Tec and Alc.-Kai group than in the Alcohol group. Microsomal ethanol oxidizing system activity was higher in Alc.-Tec group than in the other group. No significant difference was found in catalase activity among treatment groups. These data indicate that tectorigenin and kaikasaponin III were effected alcohol metabolic enzyme system and the liver damage associated with chronic ethanol consumption.

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