• Title/Summary/Keyword: acid contents

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Effect of Fertilizer Rate and Soil condition on Nonvolatile Organic and Higher Fatty Acids of Flue-cured Tobacco. (황색종 담배의 시비량 및 토양조건에 따른 비휘발성 유기산 및 지방산 함량변화)

  • Jang, G.C.;Choi, J.
    • Journal of the Korean Society of Tobacco Science
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    • v.14 no.2
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    • pp.151-158
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    • 1992
  • Field experiment was conducted to investigate the effects of stalk position, compound fertilizer application rate (N-P2O5-K2O : 10-10-20 : 75, 100, 125kg/03), paddy and upland soil and varieties, NC82 &KF103, on nonvolatile organic and higher fatty acids of flue-cured tobacco. Followed by stalk position, malic, citric, malonic and succinic acid contents were significantly increased with higher stalk position, but oleic and linoleic acid contents were decreased with higher stalk position. The higher application rate of compound fertilizer results in increasing citric, malic, malonic and succinic acid contents, but the contents of higher fatty acids were not significantly influenced by fertilizer application rate. The cured leaf cultivated in paddy soil was higher citric and malic acid contents than in upland soil, but the contents of higher fatty acids have no difference between paddy and upland soil. The variety of KF103 was higher citric and linoleic acid contents than that of NC82, but the contents of higher fatty acids have no difference between varieties.

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Nutrient Analyses of Sustainable Ready-to-Use-Supplemental Food (RUSF) developed with East African Ethnic Plant Resources (동아프리카 자원식물을 활용하여 개발된 지속가능한 영양보충식품의 영양성분 분석)

  • Lee, Kyoung-Ae;Kim, Ye-Jung;Koh, Kwangoh;Kim, Hee-Seon
    • Journal of the East Asian Society of Dietary Life
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    • v.26 no.5
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    • pp.466-472
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    • 2016
  • The objectives of the study were to analyze the various nutrient contents of ready-to-use-supplemental-food (RUSF) developed with Eastern African ethnic plants and compare them with commercially available supplemental food (CASF) for infants. RUSF was made with three African plants, including Ficus sur, Amaranthus caudatus, and Prosopis juliflorafa and locally available food ingredients in DR Congo and Ethiopia and was cooked at $180^{\circ}C$ for 20 min in a conventional oven. Macronutrients were analyzed by the AOAC method. Contents of 17 amino acids were analysed with amino acid analyzer, and vitamin $B_1%$ niacin, vitamin $B_6$, and vitamin C were analyzed with HPLC. Isomers of vitamin E were analyzed by GC-FID. The price of RUSF was 0.133 USD per 100g. Contents of macronutrients were not significantly different between developed RUSF and CASF. Results of amino acid analysis showed that most amino acid contents were similar or higher in RUSF compared with CASF. However, glutamic acid and lysine contents were less in RUSF than in CASF. Vitamin E and vitamin $B_1$ contents were more than five times higher in RUSF (22.40, 6.26 mg/100 g, respectively) than in CASF (4.00, 0.80 mg/100 g, respectively). Niacin was about three times higher while vitamin $B_6$ was almost 20 times higher in RUSF than in CASF. However, ascorbic acid was significantly lower in RUSF (3.43 mg/100 g) than in CASF (42.08 mg/100 g). Our study found that the developed localized RUSF showed higher nutrient contents in most micronutrients analyzed except for ascorbic acid. Out of 17 amino acids, glutamic acid and lysine contents in RUSF were less than in CASF. Therefore, further study is needed in order to improve these nutrients contents.

Influences of Gamma Ray Radiation Doses on Fatty Acid Contents in Ginseng (감마선 조사선양이 인삼의 지방산 함량에 미치는 영향)

  • 손현주;오현근
    • Journal of Ginseng Research
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    • v.8 no.1
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    • pp.38-44
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    • 1984
  • In order to investigate the influence of gamma-irradiation on fatty acids in ginseng, ginseng were irradiated with various radiation doses(0-50 Mrads). The results are as follows. 1. With increasing dose, standard fatty acids were decreased in the order of linolenic acid, linoleic acid and oleic acid, and their contents in the presence of oxygen were decreased more t than that in the absence of oxygen. 2. Changes of lipid content in white ginseng by gamma irradiation were varied with the samples, but the changes of crude lipid and purified lipid in a sample were showed same fashion. 3. The fatty acid contents in white ginseng were decreased by gamma irradiation in the order of linolenic acid, linoleic acid, oleic acid, stearic acid and palmitic acid.

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Mineral Contents and Fatty Acid Composition of Jemsosojoo (흑염소 소주의 무기질 함량과 지방산 조성)

  • 김종수;김관필;이만종
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.27 no.2
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    • pp.220-226
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    • 1998
  • This study was undertaken to analyze proximate comosition, mineral contents and fatty acid composition of pure jemsosojoo(PJ) and jemsosojoo added medicinal herb(JMH). Mositure, ash, crude protein and crude fat of pure jemsosojoo were higher than those of the JMH, but carbohydrate content was higher in the JMH. Among minerals, Ca, Mg, Fe, Zn content of the JMH were higher than those of the PJ, while P and Na were higher in the PJ and those difference were significant between the PJ and the JMH(p<0.05). U/S (unsaturaed fatty acid/saturated fatty acid) ratio was higher in the JMH than those of the PJ, the ratio o fglycolipid was 1.75 in the PJ and that of neutral lipid was 3.07 in the JMH. Octadecenoic acid, hexadecanoic acid, octadecenoic acid and hexadecenoic acid were major fatty acids in the total lipids, neutral lipids glycolipids and phospolipids of the PJ and the JMH. Especially, octadecadienoic acid and octadecatrienoic acid were higher in the JMH than those of the PJ.

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Fatty Acid Contents and Efficacy of In vivo and In vitro Cultured Entomopathogenic Nematodes (In vivo 및 in vitro로 배양된 곤충병원성 선충의 지방산 함량 및 효능)

  • 박선호;김효현
    • KSBB Journal
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    • v.17 no.3
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    • pp.271-275
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    • 2002
  • Fatty Acid contents of entomopathogenic nematodes(EPNs) were examined by various types of nematodes and culture methods. Seven different types EPNs cultured by in vivo did not contain same fatty acid contents, but similar compositions. It was also found that Steinernema carpocapsae among EPNs cultured by in vivo and in vitro contained not only different fatty acid contents, but also revealed distinctive motilities in a soil. The addition of olive oil in the in vitro culture medium resulted in similar fatty acid contents of S. carpocapsae to in vivo and greatly improved the pathogenicity of nematodes compared to that of soy oil in the medium.

Changes of Free Amino Acid and Free Sugar Contents in Barley Seedlings in Response to Anaerobic or Cold Treatment (혐기 또는 저온처리에 따른 보리 유식물체내 유리아미노산 및 유리산 함량의 변화)

  • 윤성중;유남희
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.41 no.2
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    • pp.139-144
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    • 1996
  • Effects of anaerobic, mechenical wounding and cold treatments on free amino acid and free sugar contents were examined in 7 day-old barley seedlings. In barley shoots under anaerobic condition, drastic changes in free amino acid content were observed. Alanine, ${\gamma}$-aminobutyric aicd(GABA) and glutamic acid contents changed most prominantly. Alanine and GABA contents increased rapidly with incubation time up to 10 hr. Glutamic acid content, however, decreased drastically during the first 5 hr of incubation, then increased thereafter. Barley shoots showed similar but smaller changes in amino aicd contents in response to mechanical wounding. GABA content increased in shoots and roots in response to the cold treatment. But increase in GABA content was greater in anaerobic than cold treatment. In anaerobically treated shoots, changes in free sugar content were less prominant than those in amino acid content. Sucrose content changed relatively larger than glucose and fructose contents in excised shoots.

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Structural Analysis of 5-aminosalicyl-L-glutamic Acid, a Colon-specific Prodrug of 5-aminosalicylic Acid, for Colon-specific Deconjugation

  • Kim, Ji-Hye;Kim, Jung-Yoon;Lee, Yong-Hyun;Kim, Young-Mi;Jung, Yun-Jin
    • Journal of Pharmaceutical Investigation
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    • v.40 no.4
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    • pp.213-218
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    • 2010
  • In a previous paper, we showed that 5-aminosalicyl-L-aspartic acid (5-ASA-Asp) has much greater deconjugation efficiency in the cecal contents than does 5-aminosalicyl-L-glutamic acid (5-ASA-Glu). To explore a reason for ineffective deconjugation of 5-ASA-Glu, structural analysis of the conjugate was performed. Aromatic acyl-L-glutamic acid derivatives, N-benzoyl-glumatic acid (BA-Glu), N-(2-hydroxybenzoyl)-glutamic acid (SA-Glu), N-(3-aminobenzoyl)-glutamic acid (3-ABA-Glu) and N-(4-aminobenzoyl)-glutamic acid (4-ABA-Glu), were prepared and incubated in the cecal contents. The deconjugation rates were compared with that of 5-ASA-Glu. The order of the rates was BA-Glu $\approx$ 4-ABA-Glu $\approx$ 3-ABA-Glu $\gg$ SA-Glu $\approx$ 5-ASA-Glu. The deconjugation of the aromatic acyl-L-glutamic acid derivatives was carried out by enzyme(s) in the cecal contents since the deconjugation did not occur in the autoclaved cecal contents and on incubation with N-benzoyl-D-glutamic acid. Our data suggest that the 2-hydroxyl group in 5-ASA is ascribed to the poor deconjugation of 5-ASA-Glu in the cecal contents.

Approximate Composition and Physicochemical Properties of Plum (Prunus Salicina) (국내산 자두 주요 품종의 일반성분 및 이화학적 성분 특성)

  • Sung, Youn-Jung;Kim, Young-Chan;Kim, Mi-Yeon;Lee, Joo-Baek;Chung, Shin-Kyo
    • Applied Biological Chemistry
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    • v.45 no.3
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    • pp.134-137
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    • 2002
  • Approximate composition and physicochemical properties of 2 cultivars of plum (P. salicina), Humoosa and Daeseok, were examined. The contents of crude fat and N-free extract were different between 2 cultivars. Total mineral contents of Humoosa and Daeseok were 30.00 and 17.99% respectively, and S, K and Mg were major minerals in both cultivars. Humoosa has higher contents of fructose whereas Daeseok has higher contents of sucrose. Major organic acid in flesh was malic acid. While citric acid was major organic acid in the peel of Humoosa, malic acid was major in the peel of Daeseok. Glutamic acid, alanine and ${\gamma}-aminoisobutyric$ acid were major free amino acid in both cultivars and their total contents were about the same.

Characteristics of Organic Acid Contents and Fermentation Solution of Prunus mume in South Korea

  • Kang, Hee-Kyoung;Kang, Hye-Rin;Lee, Young-Sang;Song, Hong-Seon
    • Korean Journal of Plant Resources
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    • v.33 no.3
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    • pp.194-199
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    • 2020
  • This study was carried out to get the information of Plum tree (192 germplasm) collected in Korea, and to evaluate the organic acid contents and fermentation solution. The organic acid content of fruit was 50.9 ± 6.0 mg/g, and which was composed of 55.5% of citric acid, 43.4% of malic acid and 1.1% of oxalic acid, and showed large difference among germplasms. Oxalic acid and malic acid made no differences in organic acid content according to flesh color, whereas citric acid and total organic acid contents were highest in orange color and lowest in whitish green. Malic acid, citric acid and total organic acid contents did not show differences among fruit weight groups, but oxalic acid content was highest at fruit weight of 5.1 ~ 10.0 g and lowest at more than 20.1 g. The sugar content of fermentation solution of fruit was 55.7 ± 1.6 °Brix and the harvest rate was 116.7 ± 8.7%. The correlation coefficients among fruit weight, the sugar content (°Brix) and harvest rate of fermentation solution were very low, and there were correlations of r=-0.551⁎⁎ between fruit weight and oxalic acid, r=-0.767⁎⁎ between malic acid and citric acid, and r=0.834⁎⁎ between citric acid and total organic acid content.

Biosynthesis of Nucleic Acid in Chloroplast Isolated from Chlorella Cells. I. (Chlorella제포에서 분리한 엽록체의 핵산합성 1)

  • 이종삼;석영애
    • Korean Journal of Microbiology
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    • v.21 no.4
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    • pp.197-206
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    • 1983
  • For the purpose of investigating the effect of nalidixic acid on the nucleic acid synthesis in chloroplast isolated from Chlorella ellipsoidea, cells were cultured in the media treated with nalidixic acid(20ppm) for 5 days. Aliquots cells were taken out at the inoculation and at intervals during the culture and growth rate of Chlorella cells measured. After extraction of nucleic acids in chloroplast isolated from these cells, their contents were analyzed by the base composition and the effect of nalidixic acid on the nucleic acid synthesis interpreted to compare with those of the control. 1. It was showed that the inhibitory concentration affected by nalidixic acid on the growth of Chlorella cells were 20ppm. 2. Because nalidixic acid had depressed the DNA replication in isolated chloroplast as well as whole cell system, these contents were markedly decreased in comparison with those of the control. 3. In the isolated chloroplast as well as in the whole cell system, nalidixic acid was decreased contents of base in the RNA by preventing RNA transcription.

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