• Title/Summary/Keyword: Acetaldehyde

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Photocatalytic Degradation of Acetaldehyde and MEK using Batch Type Photo-Reactor (회분식 광촉매반응기를 이용한 아세트알데하이드와 MEK 제거특성 연구)

  • Cha, Wang Seog
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.14 no.3
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    • pp.1527-1532
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    • 2013
  • The kinetics of photocatalytic degradation of gaseous acetaldehyde and methylethylketone(MEK) were studied by the batch scale of photo-reactor. Variable parameters were initial concentration of acetaldehyde and MEK, water vapor content, and temperature. The photocatalytic degradation rate was increased with increasing concentration of acetaldehyde and MEK, but maintained gentle increase beyond a certain concentration. The Langmuir-Hinselwood model was successfully applied to correlate experimental data. Water vapor inhibited the degradation reaction of acetaldehyde and MEK. The optimum reaction temperature was $45^{\circ}C$ for acetaldehyde and MEK.

Acetaldehyde Dehydrogenase Activator from Persimmon and Its Processed Foods (감과 가공식품의 알콜대사촉진물질)

  • 김석기;이영철;서광기;최혜선
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.30 no.5
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    • pp.954-958
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    • 2001
  • Perismmon has been consumed for long times in Korea and used as a drug for a long time in Korea, It was known to help alcohol intoxication. Ingested alcohol is metabilized by alcohol dehydrogenease and acetaldehyde dehydrogenase in liver. Alcohol dehydrogenease activator and acetaldehyde dehydrogenase activator(ALDHA) was detercted in persimmon. The oncentration of ALDHA was determined and compared in different havesting time, species, and available processed foods. The level of ALDHA was highest in persimmon (Fuyu) harvested in November. Lower ALDHA activities were found in its processed foods. Persimmon and its processed foods are expected to be effective in decreasing the concentration of alcohol and acetaldehyde after alcohol intake.

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The Growth Characteristics of Candida sp. JY-Cells on Ethanol, Acetic acid and Acetaldehyde Substrate (Ethanol, Acetic acid 및 Acetaldehyde 기질에 대한 Candida sp. JY-5 효모의 증식 특징)

  • Yeehn Yeeh;Jun, Hong-Ki
    • Microbiology and Biotechnology Letters
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    • v.13 no.3
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    • pp.239-243
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    • 1985
  • The growth characteristics of Candida sp. JY-5 were examined on ethanol, acetic acid, or acetaldehyde as sole source of carbon by batch culture. The specific growth rates ($\mu$) of this strain on an ethanol during tile exponential period were changed depending upon the initial concentrations at above 0.5 g/l, but not in the proportion. The highest $\mu$ value was 0.291 hr$^{-1}$ and the maximum growth yield was 61.2% at the concentration of 10 g/l. The $\mu$ values on an acetic acid substrate were constant regardless of the initial concentrations presenting 0.106 hr$^{-1}$ in the highest value. The maximum growth yield was shown as 46.8% at the initial concentration of 10 g/l. The $\mu$ value on an acetaldehyde during the exponential period was 0.063 hr$^{-1}$ and the maximum growth yield was 44.9% at the initial acetaldehyde concentration of 0.2 g/l.

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Quality Characteristics and Quantification of Acetaldehyde and Methanol in Apple Wine Fermentation by Various Pre-Treatments of Mash

  • Won, Seon Yi;Seo, Jae Soon;Kwak, Han Sub;Lee, Youngseung;Kim, Misook;Shim, Hyoung-Seok;Jeong, Yoonhwa
    • Preventive Nutrition and Food Science
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    • v.20 no.4
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    • pp.292-297
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    • 2015
  • The objective of this study was to compare the effects of adding lactic acid and pectinase, and chaptalization for the quality of apple wine and the production of hazardous compounds (methanol and acetaldehyde). The pH of all of the samples was below 4; therefore, mash seemed to be fermented without any issue. Total acidity was the highest in sample A due to lactic acid addition. Pre-treated groups (samples B, C, and D) showed higher total acidities than that of the control (P<0.05). Pre-treatments might influence the production of organic acids in apple wines. The control and pectinase added sample (sample B) had the lowest alcohol contents. Adding lactic acid produced more alcohol, and chaptalized samples produced more alcohol due to the addition of sugar. Adding pectinase with and without chaptalization was not effective for producing more alcohol. The control sample had significantly higher acetaldehyde content (2.39 mg/L) than the other samples (1.00~2.07 mg/L); therefore, pre-treatments for apple wine fermentation produced a lower amount of acetaldehyde. Among the pre-treated samples, samples C and D showed the lowest acetaldehyde content of 1.00 mg/L and 1.16 mg/L, respectively. On the other hand, a significantly higher amount of methanol was generated for sample A (1.03 mg/L) and sample D (1.22 mg/L) than that of the control (0.82 mg/L) (P<0.05). Adding lactic acid or chaptalization was effective in reducing methanol and acetaldehyde in apple wines.

Concentration of Formaldehyde and Acetaldehyde depending on the Time of Storage into Mineral Water (먹는샘물의 보관 기간에 따른 formaldehyde 및 acetaldehyde의 농도 변화)

  • Lee, Youn-Hee;Lee, Jun-Bae;Park, Ju-Hyun;Choi, Ja-Yoon;Ahn, Kyung-Hee;Ahn, Hye-Sil;Kwon, Oh-Sang;Kim, Tae-Seung;Han, Jin-Suk
    • Korean Journal of Environmental Agriculture
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    • v.30 no.3
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    • pp.281-287
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    • 2011
  • BACKGROUND: According to Korean regulations, bottled waters (BWs) can not be treated with chemical disinfectants like chlorine, so UV and ozone disinfection is applied. During the past several years, chemicals were detected in some BWs, and the public was concerned about the safety of BWs. METHODS AND RESULTS: Mineral waters were stored for 180 days at $25^{\circ}C$ and $50^{\circ}C$, tested acetaldehyde and formaldehyde by HPLC. When mineral waters were put in a PET bottles, the formaldehyde level ranged from 5 to $66{\mu}g/L$ during 180 days at $50^{\circ}C$. While the acetaldehyde level ranged from 31 to $221{\mu}g/L$, it was low than $16{\mu}g/L$ in glass bottle. CONCLUSION(s): This result showed that formaldehyde and acetaldehyde were detected higher in PET bottles than glass bottles, these also increased depending on the time of storage. Concentration of formaldehyde and acetaldehyde could be significantly influenced by the time of storage and temperature.

Odor Modeling of acetaldehyde in Gumi National Industrial Complex (구미국가산업단지의 아세트알데히드 악취모델링)

  • Lee, Eun Ju;Akhtar, Muhammad Saeed;Lim, Kwang-Hee
    • Korean Chemical Engineering Research
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    • v.54 no.1
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    • pp.22-35
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    • 2016
  • In this study CALPUFF modeling was performed to establish a correlation between regions of frequent civil odor complaints near Gumi national industrial complex and odor-emission facilities of synthetic fiber manufacturers in the same area as main acetaldehyde-emission point sources. As a result of the CALPUFF modeling, the maximum concentration of acetaldehyde in Gumi national industrial complex was reduced from O ($10^{-5}g/m^3$) to O ($10^{-6}g/m^3$) upon improving emission facilities of T company so that the maximum concentrations of acetaldehyde frequently appeared in complex 3. In addition, the predicted range of the maximum acetaldehyde concentration in Gumi national industrial complex was also improved in comparison with that prior to improving emission facilities of T company. These maximum concentrations of acetaldehyde obtained to estimate the expected contribution of total acetaldehyde point source by CALPUFF modeling showed the similar values to those measured in 'HAPs investigation in the region of Gumi-Daegu' and were consistent to the trend of civil odor complaints. Therefore, the expected contribution of total acetaldehyde point source was validated. The relative contribution of T company upon improving its emission facilities was predicted to be lowered by more than factor of two, compared to that prior to improving its emission facilities. To the contrary, the relative contribution of W company upon improving emission facilities of T company was predicted to be increased by more than factor of two, compared to that prior to improving emission facilities of T company. This indicates that the contribution of aldehyde point sources of W company was relatively increased upon improving emission facilities of T company.

Elimination Effect of Formaldehyde, Acetaldehyde and Total Volatile Organic Compounds from Car Felts using Nano-carbon Materials

  • Cho, Wan-Goo;Park, Seung-Gyu;Kim, Hyung-Man
    • Journal of the Korean Applied Science and Technology
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    • v.26 no.1
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    • pp.38-44
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    • 2009
  • We proposed the new nano-carbon ball (NCB) materials for eliminating the total volatile organic compounds(TVOCs) from the felt which is built in the car. The concentrations of acetaldehyde and formaldehyde of the original felts were varied upon the different production lots. Acetaldehyde in the felt can be eliminated to target level($0.2{\mu}g$) after introducing 0.5 wt% of NCB into the felt. Detector tube method for analyzing formaldehyde gas was more accurate than HPLC method. Formaldehyde can be eliminated to target level (64 ppb) after introducing 0.5 wt% of NCB into the felt. We also found that TVOC can be reduced to target level ($0.32{\mu}g$) after introducing 2.0 wt% of NCB. Upon introducing small amounts of NCB into the felt, it was possible that the level of formaldehyde, acetaldehyde and TVOC formed from the felts can be reduced to the target level. We also suggest the effective analyzing method of TVOCs.

The Effect of the Extract of Angelica gigas on the Serum Alcohol and Acetaldehyde Concentration in Rats (당귀추출물 전처치가 Rat의 혈중 알코올 및 알데히드 농도에 미치는 영향)

  • Song, Jae-Chul;Park, Jung-Mi;Kim, Sang-Woo;Lee, Hee-Sul;Jung, Woo-Sang
    • The Journal of Internal Korean Medicine
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    • v.23 no.2
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    • pp.174-180
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    • 2002
  • Objectives : Our study was designed to assess whether the extract of Angelica gigas can lower serum alcohol and acetaldehyde concentration in drunken rats. Methods : We divided Sprague-Dawley male rats into 3 groups of a Vehicle control, Positive control and Angelica gigas group. Serum alcohol and acetaldehyde levels were checked at baseline, 0.5, 1, 2 and 4 hours after drinking ethanol. Independent t-test was performed to assess the difference of the serum concentrations between the Angelica gigas induced group and the control group. Results : Angelica gigas lowered the serum acetaldehyde concentration. However, it did not lower alcohol concentration effect. Conclusions : We assume that Angelica gigas could be effective for alcohol induced hangover.

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Effect of Ethanol on Mouse Liver Monoamine Oxidase

  • Huh, Keun;Lee, Sang-Il;Park, Jong-Min;Jang, Byung-Su
    • Archives of Pharmacal Research
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    • v.11 no.3
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    • pp.213-217
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    • 1988
  • The effects of ethanol and acetaldehyde on monoamine oxidase activity in mouse liver mitochondrial fraction were studied. In vivo, a single dose of ethanol increased the hepatic monoamine oxidase activity compared to control group, and chronic ethanol consumption also increased the enzyme activity using tyramine, benzylamine or serotonin as substrate. Acetaldehyde, the metabolite of ethanol, significantly increased monoamine oxidase activity more than ethanol did. In contrast to the in vivo results, it was found that the monoamine oxidase activity was inhibited in vitro by ethanol or acetaldehyde in the dose-dependent manner.

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Effect of Artemisiae Argi Folium Fermented with Sacchromyces Cerevisiae on Hydrogen Peroxide Production of Human Hepatocyte Treated with Toxicants (Nicotine 등으로 유발된 인간 간조직세포 내 hydrogen peroxide 생성억제에 대한 효모균발효애엽 추출물의 영향)

  • Park, Wan-Su
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.24 no.1
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    • pp.96-101
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    • 2010
  • The purpose of this study is to investigate the effect of water extract from Artemisiae Argi Folium Fermented with Sacchromyces cerevisiae (AFS) on hydrogen peroxide production within human hepatocyte HepG2 cells treated with gallic acid, EtOH, nicotine, acetaminophen, and acetaldehyde. AFS (0~400 ug/mL) was treated with gallic acid, EtOH, nicotine, acetaminophen, and acetaldehyde. And the intracellular productions of hydrogen peroxide were measured by dihydrorhodamine 123 (DHR) assay. AFS showed the restoration of the intracellular productions of hydrogen peroxide which were reduced by gallic acid, EtOH, nicotine, acetaminophen, and acetaldehyde in HepG2 Cells. AFS could be supposed to have the hepatoprotective effect related with hepatocytologic signaling activity against gallic acid, EtOH, nicotine, acetaminophen, and acetaldehyde.