• Title/Summary/Keyword: Sodium lactate

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Studies on the Trace Elements, Heavy Metals and Organic acids Content of Edible Mushrooms (버섯류의 미양금속, 중금속 및 유기산 함양에 관한 연구)

  • 허선행
    • Journal of environmental and Sanitary engineering
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    • v.7 no.1
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    • pp.57-66
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    • 1992
  • To investigate on the element content of twelve edible mushrooms and Aloe arborescent, i.e., Lentinus edodes, Ganoderma lucidum (culturing in wood and soil), Tricholoma matsutake, Agaricus auricula-Jude (produced in Korea and China), sarcodon asparatus, Pleurotus ostreatus, Coriolus bisporus, Cyrophora esculenta, Auricularia auricula-Jude (produced in Korea and China), Sarcodon asparatus, Pleurotus ostreatus, Coriolus rersicolor, Smilax rotundifolia and Aloe arborescenstyl were analyzed by Atomic absorption spectrometer. The obtained results were summarized as follows : 1. Potassium, sodium, magnesium and iron content for the most part samples were in large quantities, especi phosphorus content of those was highest ammount for the all samples. 2. Sodium content f·as much ammount in the Lentinus edodes(39 mg, and Ganoderma lucidum(20 mg) , Culturing in wood and soil, while potassium was very high ammount in the Aloe arborescens and other samples. Mush ammount of magnesium as compared with others was Lentinus edodes(144 mg) , Ganoderma lucidum(128 mg), Aloe arborescens(50 mg) and Pleurotus ostreatus (60 mg) . 3, Phosphorus content of Lentinus edodes, Gyrophora esculenta, Auricularia polytricha and Agaricus bisporus was much ammount while iron content of all samples equality higher ammount. Sodium content of Aloe arborescens was not analyzed out for almost all, its potassium(82 mg), magnesium(50 mg) and iron(18 mg) content comparatively higher quentity than others nllnerals and phosphorus volume (4.9 mg) as compared with others, was conspicuously lower detect. 4. Cadimium and lead content of harmful metal element were detected on trace quantity for the most part samples. 5. Organic acids of samples i.e., Lentinus edodes, Agaricus bisporus, Pleuritus ostreatus and Ganoderma lucidum were Citrate, Malate, Fumalate, Succinate, Oxalate, Acetate, Lactate, and Tartarate and Citrate, Malate and Fumarate contents were higher amount remarkbly than other organic acids. Tartarate content was trace amount.

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Anti-neuronal Injury Effect of Evodiae Fructus Water Extract in Sodium Cyanide-induced SK-N-SH Cell Lines (Sodium Cyanide로 유도된 신경아세포종 세포주에서 오수유의 신경상해 보호효과)

  • Jang Woo-Seok;Lee So-Yeon;Yoon Hyeon-Deok;Shin Oh-chul;Park Chang-Gook;Park Chi-Sang
    • The Journal of Korean Medicine
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    • v.26 no.3 s.63
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    • pp.135-145
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    • 2005
  • Objectives : This study investigated effect of Evodiae fructus water extract (EVOR) on apoptotic cell death induced by NaCN in SK-N-SH neuroblastoma cell lines. NaCN stimulates glutamate release which can activate glutamate receptors to initiate excitotoxic processes. This study examines the role of EVOR in mediating NaCN-induced cytotoxicity. Methods & Results : Cytotoxicity was assessed by measuring lactate dehydrogenase (LDH) in the culture media. NaCN(0.1mM) produced cytotoxicity following 12hrs of incubation. NaCN-induced cytotoxicity was partially blocked by EVOR. The treatment of EVOR in simultaneous exposure of cultures to NaCN provided complete protection against cytotoxicity. NaCN-induced cytotoxicity was found to inhibit DNA fragmentation, repaired by cell cycle and simultaneous exposure to NaCN, regenerated with neurite outgrowh by EVOR. These results indicate thaf damage by NaCN in neumnal cell cultures was repaired by EVOR, whereas NaCN-induced cytotoxicity is blocked Primarily by activation of anti-apoptosis. Conclusions : These results suggest that EVOR may be beneficial for the treatment of dementia and other degenerative problems of the central nervous system.

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Efficacy of antibacterial treatments of fresh ginseng (Panax ginseng C.A. Meyer) (항균제 처리에 따른 수삼의 미생물 저감화 효과)

  • Choi, Jun-Bong;Cho, Won-Il
    • Korean Journal of Food Science and Technology
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    • v.54 no.1
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    • pp.75-79
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    • 2022
  • Fresh, washed ginseng can be contaminated with microorganism loads as high as 6.5 log CFU/g for total bacteria and 4.3 log CFU/g for mold. The goal of this study was to test eight antibacterial agents on ginseng. Immersing fresh ginseng washed in 1% (w/w) sodium citrate, sodium diacetate, sodium acetate, citric acid, and sodium lactate solution for 1 h resulted in a bactericidal effect of 31.0-97.5% for total bacteria. Among the organic acids, sodium citrate had the best antibacterial effect, with total bacteria reduced from 6.5 log to 4.9 log CFU/g. A 1% (w/w) vitamin B1 lauryl sulfate solution with surfactant function by hydrophilic and hydrophobic sites can reduce 2.7 log CFU/g (99.8% inactivation) on total bacteria. In the 1% (w/w) calcium oxide solution, total bacteria were reduced by 3 log, showing an excellent inactivation effect of 99.9%. Calcium oxide is a highly useful material for inactivation of microorganisms in fresh ginseng.

Synthesis of New Anthracycline Derivatives Containing Lactic or Stearic Acid Moiety

  • Rho, Young S.;Kim, Wan-Joong;Yoo, Dong-Jin
    • Bulletin of the Korean Chemical Society
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    • v.27 no.9
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    • pp.1359-1363
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    • 2006
  • Novel anthracycline analogues 2-9 as potential anticancer agents were synthesized from daunomycin (1a) and doxorubicin (1b). Compounds 2, 6, and 7 were prepared by the nucleophilic displacement type esterification of a 14-bromodaunomycin (1c) with a sodium lactate, and stearic acid, respectively. Compounds 3-5 and 7-9 were prepared by the reaction of either daunomycin (1a) or doxorubicin (1b) with L-lactic and stearic acids in the presence of EDCI/PP reagents.

A Study on the Changes of Blood Mineral and Enzyme Activity During Growth Period of Velvet Antler in Korean Spotted Deer(Cervus Nippon) (꽃사슴의 녹용 성장기간 중 혈액 내 미네랄 및 효소활성 변화에 관한 연구)

  • Kim, M.H.;Moon, S.H.;Lee, C.H.;Jeon, B.T.
    • Journal of Animal Science and Technology
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    • v.45 no.6
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    • pp.1031-1038
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    • 2003
  • This study was aimed at investigating the change of blood mineral and enzyme activity during growth period of velvet antler in Korean spotted deer. Samples of blood, obtained from the jugular vein of twenty-five deer(4 to 6 year-old males), were taken in 10 days interval from just after casting to 50 days. Deer were randomly selected from the farm, and samples were analyzed for blood parameters like mineral concentration and enzyme activities. No significant differences found in calcium and phosphorus concentration in blood whereas sodium, potassium and chloride concentration were significantly changed with antler growth. There were no significant differences in alkaline phosphatase, aspartate aminotransferase, alanine aminotransferase, $\gamma$-glutamyl transferase and lactate dehydrogenase during growth of antler, but alkaline phosphatase concentration was increased with growth of antler, and the highest concentration was obtained on the 50 days after casting. Creatine kinase and lactate dehydrogenase activities for the deer tested in this experiment were higher than those of other animals.

Stress responses of coho salmon, Oncorhpchus kisutch, to transport in fresh water or salt water (담수 및 염수 수송이 은연어의 스트레스 반응에 미치는 영향)

  • JEON Joong-Kyun;KIM Pyong-Kih;PARK Yong-Joo;MYOUNG Jung-Goo;KIM Jong-Man
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.33 no.2
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    • pp.119-123
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    • 2000
  • To study the stress response of coho salmon (Oncorhpohus kisutch) during transportation, the stress responses of the fish confined in a container box filled with freshwater or $5{\%{\circ}}$ salt-water were monitored pre and post 10 hours transportation. Changes of cortisol as the first stress indicator, and glucose (GLC), lactate (LAC), triglyceride (TG), cholesterol (CHOL), sodium ($Na^+$), chloride ($Cl^-$), alanine aminotransferase (ALT), aspartate aminotransferase (AST) and lactate dehydrogenase (LDH) as the second stress indicators were compared between the fish in two hauling media. Results showed significantly lower levels of cortisol, GLC, LAC, TG, CHOL and AST in salt-water group than freshwater group, It was shown that using salt-water for transportation could lessen the stress level of the coho salmon.

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Serum Stress Responses during Seawater Acclimation in Coho Salmon, Oncorhynchus kisutch (은연어의 해수 순치에 따른 스트레스 반응의 변화)

  • Hong, Kyung-Pyo;Kim, Pyong-Kih;Jeon, Joong-Kyun;Kim, You-Hee;Park, Yong-Ju;Myoung, Jung-Goo;Kim, Jong-Man
    • Ocean and Polar Research
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    • v.26 no.3
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    • pp.433-438
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    • 2004
  • Stress response to the seawater acclimation in coho salmon (Oncorhynchus kisutch) smolt was investigated. Salt concentration of rearing water was gradually increased for 3 days from freshwater to seawater (30 ppt salt level). The changes of serum concentrations of cortisol as a primary stress indicator, and as secondary indicators, glucose (GLC), lactate (LAC), triglyce.ide (TG), cholesterol (CHOL), sodium ion $(Na^+)$, chloride ion $(Cl^-)$ and enzyme activities (alanine aminotransferase, ALT: aspartate aminotrasferase, AST; lactate dehydrogenase, LDH) were quantified during the acclimation experiment. Among them, cortisol, LAC, TG, CHOL, ALT, AST concentrations showed rapid increase at the first exposure to the 10ppt salt level (day 1), and began to decrease to the constant values after day 2 of adaptation at 20ppt salt level. However, LDH concentration tended to decrease during the whole experimental period. $Na^+\;and\;Cl^-$ showed slight decrease at day 1, and increased to a little bit higher values after day 2 rather than those in freshwater. All the fishes started on taking a food after day 4 of seawater adaptation. From these results, to reduce osmotic shock inducible stress to fish in seawater acclimation, gradual increase of salt levels is recommended.

Effects of Homolactic Bacterial Inoculant Alone or Combined with an Anionic Surfactant on Fermentation, Aerobic Stability and In situ Ruminal Degradability of Barley Silage

  • Baah, J.;Addah, W.;Okine, E.K.;McAllister, T.A.
    • Asian-Australasian Journal of Animal Sciences
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    • v.24 no.3
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    • pp.369-378
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    • 2011
  • The effect of a homolactic inoculant containing a blend of Lactobacillus plantarum, Pediococcus acidilactici and Enterococcus faecium or, the anionic surfactant, sodium dodecyl sulphate (SDS), alone or in combination on fermentation characteristics, aerobic stability and in situ DM, OM and NDF degradability of barley silage was investigated. Barley (Hordeum vulgare, L.) was harvested (45% DM), chopped and treated with water at 24 ml/kg forage (Control), inoculant at $1.09{\times}10^5$ cfu/g forage (I), SDS at 0.125% (wt/wt) of forage (S) or with the inoculant ($1.09{\times}10^5$ cfu/g) plus SDS (0.125% wt/wt; I+S). The treated forages were ensiled in triplicate mini silos and opened for chemical and microbiological analyses on d 1, 2, 3, 7, 14, 42 and 77. Silage samples from d 77 were opened and aerobically exposed for 7 d. The in situ rumen degradability characteristics of silage DM, OM and NDF were also determined. The terminal concentration of NDF in S and I+S was lower (p<0.001) than in other treatments. Lactate concentration was higher (p<0.001) and the rate and extent of pH decline were greater (p<0.001) in I and I+S than S and Control silages. A homolactic pathway of fermentation in I and I+S was evidenced by reduced (p<0.001) water-soluble carbohydrates concentration, higher lactate (p<0.01), lower acetate (p<0.01) and lower pH values (p<0.001) than in S and Control silages. All silages remained stable over 7 d of exposure to air as indicated by lower temperatures and moulds, and by non-detectable yeast populations. The treated silages had lower DM and OM degradability than in the Control but NDF degradation characteristics of I+S were improved compared to other treatments. It is concluded that the inoculant alone improved the fermentation characteristics whereas the combination of the inoculant with SDS improved both fermentation and NDF degradability of barley silage.

Effects of Systemic and Focal Hypoxia on the Activities of Rostral Ventrolateral Medullary Neurons in Cats

  • Yan, Hai-Dun;Kim, Charn;Kim, Ji-Mok;Lim, Won-Il;Kim, Sang-Jeong;Kim, Jun
    • The Korean Journal of Physiology
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    • v.30 no.1
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    • pp.105-116
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    • 1996
  • Rendering the brain ischemic would evoke the cerebral ischemic reflex which is characterized by an arterial pressor response, apnea and bradycardia. Since the rostral ventrolateral medulla (RVLM) is known to play a key role in the maintenance of normal cardiopulmonary activity, during the cerebral ischemic reflex some cardiac related cells should be excited and respiration related cells inhibited. In this context, the responses of RVLM neurons to systemie and focal hypoxia were analyzed in the present study. Twenty-five adult cats of either sex were anesthetized with ${\alpha}-chloralose$ and the single neuronal activities were identified from RVLM area. For the induction of focal hypoxia in the recording site, sodium cyanide was applied iontophoretically and for systemic hypoxia the animal was ventilated with nitrogen gas for a twenty-second period. Cellular activities were analyzed in terms of their discharge pattern and responses to the hypoxia by using post-stimulus time and single-pass time histograms. Of eighteen cardiac related cells recorded from the RVLM area, twelve cells were excited by iontophoresed sodium cyanide and of twenty-five respiration related cells, fourteen cells were excited by iontophoresed sodium cyanide. Remaining cells were either inhibited or unaffected. Eight of fifteen cells tested with iontophoresed sodium lactate were excited and remaining seven cells were inhibited. Systemic hypoxia induced by nitrogen gas inhalation elevated the arterial blood pressure, but excited, inhibited or unaffected the single neuronal activities. Some cells showed initial excitation followed by inhibition during the systemic hypoxia. Bilateral vagotomy resulted in a decrease of arterial pressor response to the systemic hypoxia, and a slight decrease in the rhythmicity related to cardiac and/or respiratory rhythms. The single neuronal responses to either systemic or focal hypoxia were not affected qualitatively by vagotomy. From the above results, it was concluded that the majority of the cardiac- and respiration- related neurons in the rostral ventrolateral medulla be excited by hypoxia, not through the mediation of peripheral chemoreceptors, and along with the remaining inhibited cells, all these cells be involved in the mediation of cerebral ischemic reflex.

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Product Quality of Low-fat/salt Sausages Containing Lactoferrin and Antimicrobial Activity Against Escherichia coli O157:H7 (락토페린을 첨가한 저지방/저염 소시지의 품질 및 Escherichia coli O157:H7에 대한 항균 활성에 미치는 효과)

  • 이홍철;진구복
    • Journal of Animal Science and Technology
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    • v.48 no.4
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    • pp.575-586
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    • 2006
  • This study was performed to determine potential antimicrobial activity of lactoferrin, which incorporated into the low-fat/salt sausages during storage either at 30 or 4℃. First, the model study on the antimicrobial activity of lactoferrin was performed. Based on the model study, more than 0.25% of lactoferrin was required to have a distinctive antimicrobial activity for the growth of E. coli O157:H7 in the broth. However, extended shelf-life was not shown in the low-fat/salt sausages manufactured with lactoferrin during refrigerated storage. In addition, no synergistic effects of lactoferrin with sodium lactate were observed in the sausages. These results indicated that the addition of lactoferrin into the low-fat sausages did not have antimicrobial activity of E. coli O157:H7, due to the denaturation of lactoferrin or the complexity of the sausage, even though it had a distinctive antimicrobial effect in the model study.