• Title/Summary/Keyword: Fatty alcohol

Search Result 319, Processing Time 0.021 seconds

Mechanism of Action of Fatty Alcohol Ethoxylate on Foliar Penetration of Dimethomorph into Cucumber (Fatty Alcohol Ethoxylate에 의해 유도되는 Dimethomorph의 오이 엽면 침투 기작)

  • Yu, Ju-Hyun
    • The Korean Journal of Pesticide Science
    • /
    • v.12 no.2
    • /
    • pp.127-133
    • /
    • 2008
  • The foliar uptake of dimethomorph into cucumber was assessed by spray application of aqueous dimethomorph solution containing fatty alcohol ethoxylate (FAE) or fatty acid alkyl ester as activator adjuvants. Afterward, the possible mechanism of action of FAE on foliar penetration of active ingredient was suggested by speculating on the effect of lipophile and hydrophile of FAEs. The amount of absorbed dimethomorph induced by polyoxyethylene mono-9-octadecenyl ether (6 moles ethylene oxide, $C_{18=9}E_6$) was linearly related to the concentrations of surfactant as well as dimethomorph in spray solution, suggesting that it is simply a diffusion phenomenon of the solute molecule through a cuticular membrane from leaf surface. Octadecanol attached to FAE was most effective lipophile on the leaf penetration of dimethomorph. And, the more ethylene oxide had the polyoxyethylene chain of FAE up to 20 moles, the higher the uptake rate was. Therefore, the role of lipophile of FAE on dimethomorph penetration to cucumber leaf, probably, is to modify the physico-chemical properties of cuticular membrane to be permeable to dimethomorph, and the polyoxyethylene chain having less than 20 moles ethylene oxide, which is moderately permeable to cuticular membrane by its molar volume, is to let the physically-modified cuticular membrane to be maintained for a longtime.

Factors Influencing the Foliar Uptake of Dimethomorph into Cucumber Induced by Fatty Alcohol Ethoxylate (Fatty Alcohol Ethoxylate에 의해 유도되는 Dimethomorph의 오이 엽면 침투성 영향 인자)

  • Yu, Ju-Hyun
    • The Korean Journal of Pesticide Science
    • /
    • v.12 no.2
    • /
    • pp.118-126
    • /
    • 2008
  • In order to find the best compositions of the dimethomorph formulation containing fatty alcohol ethoxylate surfactants as an activator adjuvant and recommend the good management way of the formulations to allow an intended uptake rate, factors affecting foliar uptake of active ingredients into cucumber were investigated and compared each other. Among tested, the most important factors were air temperature in which plants were located after spraying of aqueous formulations containing activator adjuvant, and deposit of wax on the leaf surface of cucumber. Dimethomorph uptake was found to be increased by sunlight. When aqueous formulations had long-polyethoxylated fatty alcohol surfactants, the relative humidity of the room in which the plants were located after spraying with the formulations did not severely influence the foliar uptake. Maintaining a mild temperature and avoiding too strong sunlight after spraying with dimethomorph formulations were found to be resonable management strategies.

Effects of Alcoholic Feeds on In vitro Ruminal pH, Ammonia, Alcohol and Volatile Fatty Acids Concentrations (Alcohol 사료가 In vitro 반추위내 pH, Ammonia, Alcohol 및 Volatile Fatty Acids 농도에 미치는 영향)

  • 신종서;박병기
    • Journal of Animal Science and Technology
    • /
    • v.48 no.1
    • /
    • pp.91-100
    • /
    • 2006
  • In this study, changes of ammonia, alcohol and volatile fatty acid(VFA) concentrations or pH in in vitro ruminal fluid were studied to determine the effects of alcoholic feeds on in vitro ruminal fermentation characteristics. To formulate the alcoholic feeds, alcohol was added to commercial formulated feed at the levels of 1, 3, and 5 %. Experiments were done with four treatment groups, control(commercial feed), AF-1(commercial feed+1% alcohol), AF-3(commercial feed+3% alcohol), and AF-5(commercial feed+5% alcohol). Ammonia concentrations of AF-1 and AF-5 were significantly lower than that of control for the 12h incubation(p<0.05). Ruminal alcohol concentration was increased with the addition level of alcohol increased(p<0.05). TVFA concentrations of AF-1, AF-3 and AF-5 were significantly higher than those of control at 12h(p<0.05). Significant decrease of molar percentage of acetate was observed in control from 8 to 12h incubation, but molar percentage of acetate for AF-1, AF-3 and AF-5 was constant. Molar percentage of propionate was increased in control compared with AF-1, AF-3 and AF-5 from 8 to 12h incubation(p<0.05). Molar percentages of butyrate and valerate were higher in AF-1, AF-3 and AF-5 than in control(p<0.05). Molar percentage of caproate for AF-1, AF-3 and AF-5 was 0.05, 0.58 and 0.47M% at 8h, respectively, but that was not detected for control. Present results may indicate that the alcoholic feeds show positive effects on in vitro ruminal ammonia, alcohol and VFA concentrations or pH. Furthermore, the results of this study implies that the addition level of 5% could be more effective to ruminal fermentation than other addition levels.

Alcohol and Liver disease (알코올과 간질환)

  • 박병채
    • Journal of Life Science
    • /
    • v.5 no.3
    • /
    • pp.145-150
    • /
    • 1995
  • Alcoholic liver disease is defined by the development of three types of liver damage following chronic heavy alcohol consumption, namely, alcoholic fatty liver, alcoholic hepatitis, and alcoholic cirrhosis, The clinical features and laboratory tests often do not distinguish among these types of liver injuries. In addition, a considerable number of the patients who have clinical and laboratory features compatible with alcoholic liver disease are diagnosed on liver biopsy to have chronic viral hepatitis or other lesion. Because of these factors, liver biopsy is frequently needed to arrive a definite diagnosis of the disease, its activity, and its chronicity. Fatty liver is usually a benign and reverible condition that disappears on abstinence from alcohol. However, alcoholic hepatitis is usually regarded as a precursor of cirrhosis. The principle factors in the development of alcoholic hepatitis and cirrhosis are the quantity and length of ingestion of alcohol. women are much more susceptible than men to hepatic injuries. Since only 10 - 20% of alcoholics develop cirrhosis, however, it is conceivable that other factors, either genetic, environmental, or nutritional may contribute in the genesis of liver injuries. The most important factor in the treatment of alcoholic liver disease is prolonzed abstinence from alcohol, since abstinence by itself improves clinical status and survival, Nutritional support in patients with nutritional deficiency, and specific drug therapies such as corticosteroid or anabolic steroids for hospitaliged patients with severe alcoholic hepatitis also play an important role in devreasing morbidity and improving survival. Liver transplantation is a newer treatment modality in the patients with advanced cirrhosis, not responsible to medical treatment.

  • PDF

Effect of MH and FA on the Change of Several Metabolites in Flue-cured Tobacco (Nicotiana tabacum L.) I. MH Absorption Ratio, Change of MH Residues and Alkaloid contents (MH 및 FA이 황색종 잎담배의 몇가지 대사산물 변화에 미치는 영향 I. MH 흡수율과 잔류량 및 Alkaloid함량의 변화)

  • 한상빈;육창수;조성진
    • Journal of the Korean Society of Tobacco Science
    • /
    • v.15 no.2
    • /
    • pp.145-151
    • /
    • 1993
  • Using a flue - cured tobacco variety, KF lH9, recently bred and released to farming, effect of growth regulators(fatty alcohol and C - MH) on the change of alkaloid contents and dynamics of MH uptake and distribution were investigated. An efficient sucker control method was also pursued. Treatment of fatty alcohol at button stage remarkably increased the rate of C - MH uptake. However, except in the plants treated with 2- fold volume of C - MH, residue of C -MH was kept under maximum residue level(80 ppd). C - MH residue in stalk was higher than in foliage in general. Compared to untreated control, leaf weight per unit area was increased by the treatment even in lower leaves where vigorous transfer of C - MH from treated tips was indicated and sucker control higher than 94.9% was achieved with all treatments except for sole half volume C - MH treatment at topping stage. Alkaloid content in foliage was reduced by dual treatment of fatty alcohol and C - MH but increased in stalk and root.

  • PDF

Effect of MH and FA on the Change of Several Metabolites in Flue - cured Tobacco(Nicotiana tabacum L.) II. Nucleic Acid and Protein Contents (MH 및 FA가 황색종 잎담배의 몇가지 대사산물 변화에 미치는 영향 II. 핵산과 단백질함량의 변화)

  • 한상빈;육창수;조성진
    • Journal of the Korean Society of Tobacco Science
    • /
    • v.15 no.2
    • /
    • pp.152-160
    • /
    • 1993
  • Using a flue- cured tobacco variety, KF 109, effect of growth regulators(fatty alcohol and C- MH) on the change of protein, DNA, and RNA were investigated. Generally, inhibition of DNA synthesis was observed soon after become notably reduced when checked on 14 days after the treatment. Fatty alcohol treatment appeared to alleviate the inhibition of DNA synthesis caused by the C - MH treatment. It was also observed that in the tips DNA content increased slightly at the early stage after the C - MH treatment but evident reduction of it was resulted from 7th day after the treatment. RNA content in cutters and tips was increased initially but variable transcription inhibitory activities - not so obvious as was observed in DNA synthesis - according to leaf positions were shown thereafter. Ripening of leaves probably due to senescence was advanced by the treatment of the growth regulators. DNA content in root was relatively higher in plants treated with the growth regulators while it was clearly decreased in stalk, However, RNA contents in tissue of stalk and root was not different with that of foliage. Increase of protein content in foliage as well as in stalk was evident 14 days after dual treatment of fatty alcohol and C - MH.

  • PDF

Association of Fatty Acid Ethyl Esters in Meconium of Neonates with Growth Deficits at Birth: a Prospective, Single-Centre Cohort Study

  • Lee, Hyun-Seung;Kim, Yeon Hee;Kwak, Ho-Seok;Han, Jung-Yeol;Jo, Sun-Jin;Lee, Hae Kook
    • Journal of Korean Medical Science
    • /
    • v.33 no.50
    • /
    • pp.318.1-318.10
    • /
    • 2018
  • Background: In this prospective cohort study, we investigated the association between fatty acid ethyl esters (FAEEs) in meconium as biomarkers of prenatal ethanol exposure and growth deficits, as birth outcomes, that constitute several of the key cardinal features of fetal alcohol syndrome. Methods: A total of 157 meconium samples were collected from enrolled infants within 24 hours of birth, and nine FAEEs were quantified using liquid chromatography/tandem mass spectrometry. The relationships between cumulative concentrations of nine species of FAEEs in meconium and birth parameters of growth (age-sex-specific centiles of head circumference [HC], weight, and length) and respective and combined birth outcomes of growth deficits (HC ${\leq}10th$ centile, weight ${\leq}10th$ centile, and length ${\leq}10th$ centile) were determined. Results: Multivariate logistic regression analysis demonstrated that higher cumulative concentrations of meconium FAEEs correlated with elevated risks for HC and length, both, 10th percentile or less (adjusted odds ratio [aOR], 2.94; 95% confidence interval [CI], 1.12-7.74; P = 0.029) and HC and weight and length, all of them, 10th percentile or less (aOR, 3.27; 95% CI, 1.12-9.59; P = 0.031). Conclusion: The elevated cumulative FAEEs in meconium were associated with combined growth deficits at birth, specifically HC and length, both, 10th percentile or less, which might be correlated with detrimental alcohol effects on fetal brain and bone development, suggesting a plausible alcohol-specific pattern of intrauterine growth restriction.

Effect of Fatty Alcohols on Skin Permeation of Flurbiprofen (지방산 알코올이 플루르비프로펜의 피부투과에 미치는 영향)

  • Kim, Hyun;Park, Eun-Seok;Chi, Sang-Cheol
    • Journal of Pharmaceutical Investigation
    • /
    • v.25 no.2
    • /
    • pp.125-128
    • /
    • 1995
  • To increase the skin permeation rate of flurbiprofen, fatty alcohols were added in propylene glycol vehicle containing 1% flurbiprofen. Their enhancing effect on the skin permeation of flurbiprofen was evaluated using Keshary-Chien diffusion cells fitted with excised rat skins. Lauryl alcohol and oleyl alcohol increased the skin permeation rate of flurbiprofen 11.3 and 8.5 fold, respectively, compared to the control vehicle.

  • PDF

Changes of Alcohol, Free Amino Acid, Non-Volatile Organic Acid and fatty Acid Composition during Brewing of Backilju (백일주 양조중 알코올, 유리아미노산, 비휘발성유기산 및 지방산조성의 변화)

  • 박석규;박필숙;김귀영;강우원;이영근
    • Journal of the East Asian Society of Dietary Life
    • /
    • v.4 no.3
    • /
    • pp.103-109
    • /
    • 1994
  • Changes in taste components of Backilju, an traditional alcoholic beverage of Korea, were investigated. Ethanol(17%) was the most abundant, and then isoamylalcohol(23mg%) and methanol(8mg%) were also detected in a small amount in Backilju. Major non-volatile organic acids were lactic and malic acid, followed by citric, fumaric and succinic acid. Arginine, phenylalanine and glutamic acid were major free amino acids and essential amino acid content was 230∼560 mg%, which was 45∼48% of total free amino acids. The major fatty acid of total lipid was palmitic acid(37∼43%). It has been found that the Backilju contained more free amino acids and alcohols than other Korean Yokjus.

  • PDF

A Cellular Physiological Study on the Effects of Korean Ginseng -Part III. Effects of Ginseng, Linoleic acid and Stearic acid on the Cell Division- (인삼의 효과에 관한 세포생리학적 연구 -제 III 편 세포분열에 미치는 인삼, Linoleic acid, Stearic acid 의 영향-)

  • Jung, Noh-Pal
    • The Korean Journal of Physiology
    • /
    • v.3 no.1
    • /
    • pp.55-58
    • /
    • 1969
  • It was studied that which components of the ginseng are related to the effects that accelerate Saccharomyces division by comparing the influences of ginseng powder, alcohol extracts of ginseng, and linoleic and stearic acids which are known as the ginseng components on the division. The addition of ginseng powder and alcohol extracts of ginseng to the glucose agar medium marked the conspicuous increases of the division of Saccharomyces: 44% increase by 0.1% powder, 53% increase by 0.05% alcohol extracts. Also, the addition of the fatty acids of less than 0.0008% marked the considerable increases of the division: 22% increase by 0.0008% linoleic acid, 31% increase by 0. 00016% linoleic acid, 12% increase by 0.0008% stearic acid. Therefore it can be concluded that a proper amount of those fatty acids contained in the ginseng has a definite effect on the acceleration of Saccharomyces division.

  • PDF