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Journal articles on the topic 'Acidic fraction'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Wiyono, Bambang, Sanro Tachibana, and Tinambunan Djaban. "CHEMICAL COMPOSITIONS OF PINE RESIN, ROSIN AND TURPENTINE OIL FROM WEST JAVA." JOURNAL OF FORESTRY RESEARCH 3, no. 1 (2006): 7–17. https://doi.org/10.20886/ijfr.2006.3.1.7-17.

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  This study was conducted to identify chemical composition of merkus pine resin, rosin and turpentine oil. Initially, pine resin was separated into neutral and acidic fractions with an aqueous 4% sodium hydroxide solution. After methylation, the fraction containing turpentine oil and rosin were analyzed by gas chromatography (GC), and gas chromatograph mass spectrometry (GC-MS), respectively. The neutral fraction of pine resin and turpentine oil mainly consisted of a-pinene, D-3-carene and b-pinene. Based on mass spectral comparison, the major constituents of the acidic fraction and rosi

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2

WARAHAPSARI, FATIMAH AYU, GANIS LUKMANDARU, MASENDRA, and ANDRIAN FERNANDES. "SHORT NOTES: A CHEMOTAXONOMIC STUDY OF THE RESINS FROM THREE DIPTEROCARP SPECIES (Shorea macrophylla, Shorea pinanga, and Shorea hopeifolia)." Wood Research 68, no. 3 (2023): 592–99. http://dx.doi.org/10.37763/wr.1336-4561/68.3.592599.

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A chemotaxonomic study on the resins of Shorea macrophylla, Shorea pinanga, and Shorea hopeifolia was conducted. The dichloromethane extracts were separated into neutral and acidic fractions and then analyzed using GC-MS. The neutral fraction analysis revealed that spathulenol, caryophyllene oxide, aromadendrene oxide, and isoaromadendrene epoxide were the major constituents in all three species. Furthermore, the main compound in the neutral fraction of Shorea hopeifolia was isocaryophyllene which was undetected in the other two species. The major constituent of the acidic fraction of the thre

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3

Huseynova, B. A., N. F. Gafarova, and E. A. Bekhmetova. "Study of acidic oxygen-containing and nitrogenous compounds isolated from 150–350 °C fraction of deep-water Gunashli field oil." Azerbaijan Oil Industry, no. 10 (October 15, 2020): 51–53. http://dx.doi.org/10.37474/0365-8554/2020-10-51-53.

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The article presents the results of studies on the structural-group composition of acidic oxygen-containing and nitrogenous compounds isolated from the 150–350 oC fraction of the deep-water oil of Gunashli field. The oil is light, low sulfur, paraffinic, rich in light fractions, the acid number is 1.01 mg KOH/g, the total content of acidic oxygen-containing compounds is 0.17 %, and total nitrogen is 0.11 % by weight. The acid number of the 150–350 oC fraction from the same oil is 242.3 mg KOH/g. Acidic oxygen-containing compounds isolated from this fraction with a yield of 0.19 %, nitrogen-con

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4

S. Raju, T. "Polysaccharidecomponents of the water‐soluble mucilage from the bark of thesilk cotton or kapok tree (Ceiba pentandra var. indica)." Biotechnology and Applied Biochemistry 25, no. 3 (1997): 217–21. http://dx.doi.org/10.1111/j.1470-8744.1997.tb00435.x.

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The mucilaginous polysaccharide complex isolated from the bark of the silk cotton or kapok tree (Ceiba pentandra var. indica) upon delignification followed by graded Cetavlon and ethanol precipitation afforded acidic and neutral polysaccharide fractions which were further purified by ion‐exchange chromatography. The acidic fractions contained two structurally similar glucuronorhamnogalacturonans with different physical properties [Raju, Gowda and Anjaneyalu (1989) Carbohydr. Res. 191, 321Ő332]. The neutral polysaccharide fraction was further fractionated by DMSO into DMSO‐soluble and DMSO‐inso

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5

Vriesmann, Lúcia Cristina, Carmen Lúcia de Oliveira Petkowicz, Paulo Irajara Borba Carneiro, Maria Eugênia Costa, and Eliana Beleski-Carneiro. "Acidic polysaccharides from Psidium cattleianum (Araçá)." Brazilian Archives of Biology and Technology 52, no. 2 (2009): 259–64. http://dx.doi.org/10.1590/s1516-89132009000200001.

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The aim of this work was to study the acidic polysaccharides of Psidium cattleianum. Pectic fractions were obtained by successive extractions with water, EDTA and sodium carbonate (4 and 25ºC). Monosaccharide composition, total carbohydrates, uronic acids and protein contents were determined for each fraction. The yield of water and EDTA-soluble fractions and high content of uronic acid were consistent with the presence of pectins probably arising from the middle lamellae. On the other hand, sodium carbonate-soluble pectins had a higher neutral sugar content, indicating highly branched polysac

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6

Nahar, Nilufar, AKM Ahsan Habib, SM Mizanur Rahman, and Tofail Ahmed Chowdhury. "Structure Elucidation of Soluble Dietary Fiber from Cauliflower." Dhaka University Journal of Science 64, no. 1 (2016): 83–88. http://dx.doi.org/10.3329/dujs.v64i1.28529.

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Arabinogalactan and rhamnogalactglucuronan were isolated from soluble dietary fiber (SDF) of cauliflower. The isolated SDF was fractioned into neutral and acidic parts by ion-exchange column chromatography using DEAESepharose Cl-6B gel. Structure elucidation of the isolated SDF polysaccharides were determined sugar analysis, 1HNMR, H-H COSY and TOCSY spectroscopic studies. Neutral fraction of cauliflower was found to be composed of galactose, arabinose and rhamnose whereas the acidic part was found to contain rhamnose, galactose, galacturonic and glucuronic acids. The main chain of the neutral

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7

Ramos, Márcio Viana, Liezelotte Rezende Bomfim, Bandeira, and Henri Debray. "Evidence of an endogenous lectin receptor in seeds of the legume Cratylia floribunda." Brazilian Journal of Plant Physiology 14, no. 3 (2002): 195–202. http://dx.doi.org/10.1590/s1677-04202002000300003.

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Cratylia floribunda seeds were ground and the clean crude saline extract was fractionated into albumin, globulin, prolamin, acidic and basic glutelin protein fractions. These protein fractions were examined for the presence of an endogenous lectin receptor by SDS-polyacrylamide gel electrophoresis, western blot, affinity chromatography on a Sepharose 4B-Cratylia floribunda (CFL) lectin column and kinetic analysis in real time by surface plasmon resonance (SPR). Prolamin was the richest protein fraction although very poor in haemagglutinating activity. Basic glutelin was far the less interestin

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8

Wu, F. C., R. B. Mills, Y. R. Cai, R. D. Evans, and P. J. Dillon. "Photodegradation-induced changes in dissolved organic matter in acidic waters." Canadian Journal of Fisheries and Aquatic Sciences 62, no. 5 (2005): 1019–27. http://dx.doi.org/10.1139/f05-009.

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Photodegradation of dissolved organic matter (DOM) from stream waters was investigated using dissolved organic carbon (DOC) analysis, ultraviolet-visible absorbance, three-dimensional excitational emission matrix fluorescence, and high-performance size exclusion chromatography. The effects of altering pH and various iron concentrations on DOM characteristics during irradiation were examined. DOC concentration, absorbance, and fluorescence all decreased with increasing irradiation. These decreases were accompanied by a decrease in absorbance spectral slope and average molecular size and a blue-

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9

Muhammad, Surayya Mustapha, Ibrahim A. Sabo, Ahmed Mohammed Gumel, and Fatima I, Alkali. "Extraction and Purification of Antimicrobial Proteins from Datura Stramonium Seed." JOURNAL OF ADVANCES IN BIOTECHNOLOGY 8 (April 17, 2019): 1073–77. http://dx.doi.org/10.24297/jbt.v8i0.8221.

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Resistant to antibiotics by microbes have become a major global challenge incurring economic and public health burden. Hence, research to develop new effective anti-biotics should be a major consideration to pharmaceutical industries, scientific researchers, Amanda ‘scientific researchers and world health organizations at large. This study is conducted to investigate the antimicrobial property of proteins present in the seeds of Datura stramonium. The extraction was carried out using Tris-HCL buffer prepared from 50M Tris and 0.3M NaCL, the proteins were isolated using ammonium sulphate precip

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10

Kruger, Marlena C., Gabrielle G. Plimmer, Linda M. Schollum, Neill Haggarty, Satyendra Ram, and Kate Palmano. "The effect of whey acidic protein fractions on bone loss in the ovariectomised rat." British Journal of Nutrition 94, no. 2 (2005): 244–52. http://dx.doi.org/10.1079/bjn20051454.

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Bovine milk has been shown to contain bioactive components with bone-protective properties. Earlier studies on bovine milk whey protein showed that it suppressed bone resorption in the female ovariectomised rat. A new osteotropic component was subsequently identified in the whey basic protein fraction, but bone bioactivity may also be associated with other whey fractions. In the present study, we investigated whether acidic protein fractions isolated from bovine milk whey could prevent bone loss in mature ovariectomised female rats. Six-month-old female rats were ovariectomised (OVX) or left i

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11

Choi, G. T., M. Casu, and W. A. Gibbons. "N.m.r. lipid profiles of cells, tissues and body fluids. Neutral, non-acidic and acidic phospholipid analysis of Bond Elut chromatographic fractions." Biochemical Journal 290, no. 3 (1993): 717–21. http://dx.doi.org/10.1042/bj2900717.

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Although the advantages of in vitro n.m.r. analysis of cellular lipids have been documented, this purely n.m.r. approach also has drawbacks. Rapid and quantitative separation of total lipids into neutral lipids, non-esterified fatty acids, non-acidic phospholipids and acidic phospholipids using Bond Elut ion-exchange columns as demonstrated here permitted a more quantitative and complete n.m.r. analysis of glycerides, cholesterol, saturated and unsaturated sphingolipids and ether lipids, as well as of diacylcholine and ethanolamine lipids. Acidic lipids were also analysed. The fatty acid compo

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12

Ajel, Mahmood, Fawziea M. Hussien, and Johain J. Faraj. "Acidic pretreatment of cellulose for bio methane production." Journal of University of Shanghai for Science and Technology 23, no. 11 (2021): 153–58. http://dx.doi.org/10.51201/jusst/21/10866.

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Present work deals with the exhaustive investigations of rapid de-lignification processes from source-sorted organic fractions that are recalcitrant in nature. Organic solid wastes (OSW) belong to the organic fraction of municipal solid wastes (MSW) and they act as enormous potential substrate for alternative source of energy in the form of bio-fuels. Nevertheless, these substrates are not easily biodegradable and the degree of biodegradability is solely dependent on the composition and characteristic of organic solid wastes in municipal solid wastes. The component responsible for recalcitranc

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13

Senel, Unal, Murat Demirtas, Ilkay Senel, et al. "Investigation of Mutagenic Effects of Synthetic Acidic Textile Dyes by Umu-Test (Salmonella thyphimurium TA1535/pSK1002)-a Short Term Bacterial Assay." International Journal of Biology 8, no. 2 (2016): 85. http://dx.doi.org/10.5539/ijb.v8n2p85.

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<p class="1Body">In this study, genotoxic properties of some synthetic acidic dyes were researched by <em>umu</em>-test (<em>Salmonella thyphimurium </em>TA1535/pSK1002) which is a short term bacterial test. The study analyzed genetoxic activity of Acid Blue 127, Acid Orange 51, Acid Black 63, Acid Yellow 17 and Acid Blue 113 synthetic acidic dyes in presence and absence of S9 fraction used in Textile industry. Solutions of dyes at concentrations of 400 µg/ml, 120 µg/ml, 40 µg/ml and 4 µg/ml were prepared; and biotransformation effects of dyes that undergo chemica

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14

Lin, C., W. Lu, and Y. Wu. "Agricultural soils irrigated with acidic mine water: acidity, heavy metals, and crop contamination." Soil Research 43, no. 7 (2005): 819. http://dx.doi.org/10.1071/sr04148.

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Agricultural soils irrigated with acidic mine water from the Guangdong Dabaoshan Mine, China, were investigated. The pH of the soils could be as low as 3.9. However, most of the mineral acids introduced into the soils by irrigation were transformed to insoluble forms through acid buffering processes and thus temporarily stored in the soils. Different heavy metals exhibited different fraction distribution patterns, with Zn and Cu being mainly associated with organic matter and Pb being primarily bound to oxides (statistically significant at P = 0.05). Although the mean of exchangeable Cd was gr

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15

Mohanty, Prajnasmita, Narendra Swaroop, Tarence Thomas, and Iska Srinath Reddy. "Phosphorus Fraction Distribution in Soils of three Rice-Growing Blocks of Mayurbhanj District in Odisha State, India." International Journal of Plant & Soil Science 35, no. 17 (2023): 314–19. http://dx.doi.org/10.9734/ijpss/2023/v35i173213.

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In the month of June in three distinct blocks of the Mayurbhanj district, the twenty-seven soil samples were collected from nine different rice-growing areas at three depths and analyzed. In accordance to the findings, the soils were found to have low to medium levels of organic carbon and to be moderately acidic to slightly acidic in nature. All the soil samples were under Non-saline condition of Electrical Conductivity and suitable for crops. The study found that soil pH was the main factor influencing different Phosphorus fractions, with Reductant soluble-P being the mostpredominant fractio

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16

Rogers, Mary-Louise, David A. Belford, Geoffrey L. Francis, and F. John Ballard. "Identification of fibroblast growth factors in bovine cheese whey." Journal of Dairy Research 62, no. 3 (1995): 501–7. http://dx.doi.org/10.1017/s0022029900031198.

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SummaryAcidic and basic fibroblast growth factors (FGF) were identified in bovine cheese whey after partial purification using a two step procedure. Cation-exchange chromatography produced a mitogen-rich extract which was loaded on to a heparin-sepharose column and eluted stepwise with 0·8, 1·2 and 2·0 M-NH4HC03. Mitogenic activity was found in all three fractions by cell growth assays using Balb/c-3T3 fibroblasts. Immunoblotting identified acidic FGF in the 1·2 M-eluate and basic FGF in the 2·0 M-eluate, but neither acidic nor basic FGF was detected in the 0·8 M-fraction. Quantitative radiore

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17

Warnes, M. L. "Responses of Glossina morsitans morsitans Westwood and G. pallidipes Austen (Diptera: Glossinidae) to the skin secretions of oxen." Bulletin of Entomological Research 80, no. 1 (1990): 91–97. http://dx.doi.org/10.1017/s000748530004596x.

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AbstractIn Zimbabwe, catches of Glossina morsitans morsitans Westwood and G.pallidipes Austen at odour baited traps were increased in the presence of residues of a solution of the skin secretions of oxen (hereafter sebum) by 80% and 29% respectively, and catches at F3 traps were significantly increased when sebum was presented on adjacent screens. Testing of fractions of sebum revealed active components(s) in the phenolic and non-acidic fractions but not in the acidic fraction. Furthermore, the activity of the phenolic fraction could not be explained by the presence of the known phenolic tsets

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18

KARASAWA, AKIRA, MASAHIKO OGIHARA, and RYOICHI ISHITANI. "(3H)tryptamine binding to reconstituted fraction of acidic lipids." Journal of Pharmacobio-Dynamics 10, no. 2 (1987): 78–84. http://dx.doi.org/10.1248/bpb1978.10.78.

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19

KASAI, Takanori, and Shuhachi KIRIYAMA. "Acidic amino acid fraction of Allium bakeri (Rakkyo) bulbs." Journal of the agricultural chemical society of Japan 61, no. 10 (1987): 1289–91. http://dx.doi.org/10.1271/nogeikagaku1924.61.1289.

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20

Cassien, Mathieu, Anne Mercier, Sophie Thétiot-Laurent, et al. "Improving the Antioxidant Properties of Calophyllum inophyllum Seed Oil from French Polynesia: Development and Biological Applications of Resinous Ethanol-Soluble Extracts." Antioxidants 10, no. 2 (2021): 199. http://dx.doi.org/10.3390/antiox10020199.

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Tamanu oil from Calophyllum inophyllum L. has long been used in traditional medicine. Ethanol extraction was found the best strategy for recovering bioactive compounds from the resin part of Tamanu oil, yielding two neutral and acidic resins fractions with high phenolics, flavonoids and pyranocoumarins concentrations. A further cascade of LPLC/HPLC separations of neutral and acidic resin fractions allowed identifying fifteen metabolites, and among them, calanolide D and 12-oxocalanolide A (both in neutral fraction) were first identified from a natural source. All these extracts, subfractions a

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21

Ng, T. B., C. M. Wong, W. W. Li, and H. W. Yeung. "Acid-Ethanol Extractable Compounds from Fruits and Seeds of the Bitter Gourd Momordica Charantia: Effects on Lipid Metabolism in Isolated Rat Adipocytes." American Journal of Chinese Medicine 15, no. 01n02 (1987): 31–42. http://dx.doi.org/10.1142/s0192415x87000059.

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Fruits and seeds of the bitter gourd Momordica charantia (Family Cucurbitaceae) were extracted with the acidic ethanol. The extract was adjusted to pH 3 and proteins and peptides were precipitated by additon of a copious volume of aceton. The precipitate was dissolved, dialyzed and lyophilized. The resulting material, designated "p-fraction" was tested for antilipolytic and lipogenic activities. Seed "p-fraction" was further chromatographed on fetuin agraose to yield an unadsorbed fraction (F) which could be fractioned by gel filtration on Sephadex G-10 to give an unretarted fraction (F1) and

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22

Sahu, Mamta, Manik Chandra Kundu, and Mohammed Nisab C. P. "Soil Properties Influence Vertical Distribution of Boron Fractions in Lateritic Soil." International Journal of Bio-resource and Stress Management 14, Sep, 9 (2023): 1249–61. http://dx.doi.org/10.23910/1.2023.4115.

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The present study was conducted at Palli Siksha Bhavana (Institute of Agriculture), Visva-Bharati, West Bengal, India, during 2019-20 to evaluate the different fractions of boron (B) along depth and their relationship to some soil properties in lateritic soils of West Bengal, India. The sequential B fractionation scheme was followed to estimate B fractions in the studied soils. It was found that most of the soils fall under the sandy clay loam and clay loam soil textural categories. The soil pH was either categorized as extremely acidic or slightly acidic in nature and the range of low to medi

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23

Strocchi, P., and J. M. Gilbert. "The characterization of an acidic calmodulin-binding protein in brain cytoskeleton and membrane fractions." Biochemical Journal 240, no. 2 (1986): 593–96. http://dx.doi.org/10.1042/bj2400593.

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One of the most abundant acidic proteins in rat brain has an Mr of 68,000 and a pI of 5.6 (68K 5.6 protein) when analysed by two-dimensional gel electrophoresis. The 68K 5.6 protein was found in large relative amounts in brain cytoskeleton preparations and in membrane and supernatant fractions. High-salt washing and proteolytic digestion did not remove this protein from the membrane elements. The 68K 5.6 protein was also found in the microtubule-associated protein fraction of purified microtubules and was present in large relative amounts in preparations of intermediate-filament proteins. The

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24

Gordina, E. N., and A. A. Zlobin. "The composition of water-soluble polysaccharides of Heracleum sosnowskyi stem callus cells." Theoretical and Applied Ecology, no. 2 (June 25, 2025): 126–31. https://doi.org/10.25750/1995-4301-2025-2-126-131.

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A fraction of water-soluble polysaccharides extracted from cells with hot water was isolated from the callus tissue of the stem of the Heracleum sosnowskyi Manden. It was shown that the main components of the carbohydrate chains of the water-soluble polysaccharides fraction of callus are galactose, arabinose, and glycuronic (D-galacturonic and D-glucuronic) acid residues, which were identified in almost equal amounts. Glucose, rhamnose, xylose, and mannose residues are also included as minor monosaccharides in callus. Using ultrafiltration and ion exchange chromatography methods, it was found

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25

Dhumgond, Prabhudev, Prakash S S, Punith Raj T S, Sharan Bhoopal Reddy, and Shivakumar K M. "Dynamics of Soil Organic Carbon and Their Fractions Under Different Cropping Systems in Hill Zone Acid Soils of Karnataka." Madras Agricultural Journal 99, December (2012): 762–68. http://dx.doi.org/10.29321/maj.10.100190.

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Soil organic carbon (SOC) and its different labile fractions are important in minimizing negative environmental impacts and improving soil quality. Thus it is very important to understand the fractions of soil organic carbon and their distribution in different cropping systems. Soil characterization revealed that soils were slightly acidic to moderately acidic in range with low soluble salts. Soil under coffee and areca system recorded significantly higher SOC, TOC and TN content compared to paddy system. The SMB-C, SMB-N, LFC and DOC were higher in coffee and areca cropping systems compared t

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26

Backes, C. A., and E. Tipping. "Aluminium complexation by an aquatic humic fraction under acidic conditions." Water Research 21, no. 2 (1987): 211–16. http://dx.doi.org/10.1016/0043-1354(87)90051-0.

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Čačković, Mirjana, Vladimira Vađić, Krešimir Šega, and Ivan Bešlić. "Acidic Anions in PM10 Particle Fraction in Zagreb Air, Croatia." Bulletin of Environmental Contamination and Toxicology 83, no. 2 (2009): 188–92. http://dx.doi.org/10.1007/s00128-009-9641-8.

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Ta, T. C., F. D. H. Macdowall, and M. A. Faris. "Utilization of carbon from shoot photosynthesis and nodule CO2 fixation in the fixation and assimilation of nitrogen by alfalfa root nodules." Canadian Journal of Botany 65, no. 12 (1987): 2537–41. http://dx.doi.org/10.1139/b87-344.

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The products of CO2 and N2 fixation in alfalfa (Medicago sativa L.) were followed after supplying 14CO2 to the shoot system while the root was exposed to 15N2 or after supplying both labels to the root. Photosynthate was transported to the nodules in less than 1 h and was distributed throughout the plant primarily in the neutral (sugars) fraction (over 80%), while the basic (amino acids and amides) and acidic (organic acids) fractions each contained only 5 to 10% of the total radioactivity. At midday the nodules fixed more than twice the amount of carbon that they received as fresh photosyntha

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Tofan, Elena, Natalia Chiselita, Oleg Chiselita, et al. "OPTIMIZATION OF THE WASTE PROCESSING PROCEDURE OF THE BEER INDUSTRY AND OBTAINING LIPID PREPARATION FROM YEAST BIOMASS." Akademos 60, no. 1 (2021): 51–56. http://dx.doi.org/10.52673/18570461.21.1-60.06.

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Currently, special attention is paid to the use of industrial by-products, in particular those obtained in huge quantities in the brewing and wine making process, as a source for the production of natural preparations with high biological value. In this study are presented results related to the recovery of beer yeast biomass from the sediments of the beer industry, by obtaining lipid extracts with valuable biochemical composition. Thus, applying the optimized autolysis method, with the use of sodium phosphate buffer at 45°C for the destruction of the cell wall and fractional extraction with h

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Nahar, Nilufar, and AKM Ahsan Habib. "Soluble dietary fibers from Trigonella foenum graecum Linn. seed and their structures." Journal of Bangladesh Academy of Sciences 38, no. 1 (2014): 19–26. http://dx.doi.org/10.3329/jbas.v38i1.20201.

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Soluble dietary fibers of Trigonella foenum graecum Linn. seed were isolated and fractionatedinto neutral and acidic parts. Structures of both the fractions were determined by sugar analysis andhigh resolution 2D NMR spectroscopic studies including total correlation (TOCSY) spectroscopy.Main chain of the neutral SDF fraction was found to be a galactomannan composed of mannoseand galactose (~1 : 1.5 ratio) having 1,3-? linkages between each other. Terminal mannose residuewas linked to galactose residue of the main chain at its 4 position by ?-linkage. The acidic SDF wasa rhamnogalacturonan, in

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Hacke, Ana Carolina Mendes, Jacqueline Aparecida Marques, José Carlos Rebuglio Vellosa, et al. "Ethyl acetate fraction of Cymbopogon citratus as a potential source of antioxidant compounds." New Journal of Chemistry 42, no. 5 (2018): 3642–52. http://dx.doi.org/10.1039/c7nj04352j.

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Youn, Soo Hyun, Sang Min Lee, Chang-Kyun Han, Gyo In, Chae-Kyu Park, and Sun Hee Hyun. "Immune Activity of Polysaccharide Fractions Isolated from Korean Red Ginseng." Molecules 25, no. 16 (2020): 3569. http://dx.doi.org/10.3390/molecules25163569.

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Korean red ginseng (KRG)’s pharmacological efficacy and popular immunomodulatory effects have already been proven in many studies; however, the component of KRG that is effective in immune activity has not been studied before. Therefore, this study extracted and separated KRG for an immune activity comparison. In the water fraction obtained by extracting KRG powder with water, a red ginseng neutral polysaccharide (RGNP) fraction and a red ginseng acidic polysaccharide (RGAP) fraction were obtained. Each fraction was orally administered for 10 days to mice with reduced immunity, and the number

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Bombos, Mihaela, Elena Emilia Oprescu, Catalina Calin, Gabriel Vasilievici, Sanda Velea, and Dorin Bombos. "Slow Pyrolysis of Biomass in Acidic or Metallic Catalysis." Revista de Chimie 70, no. 9 (2019): 3148–51. http://dx.doi.org/10.37358/rc.19.9.7505.

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Achieving the process of pyrolysis of biomass in mild conditions is a viable option for optimizing yield in liquid products and reducing coke yield. The partially dried digestate was stabilized by suspending in a reverse emulsion containing the lipid fraction resulting from the processing of the crude digestate, a hydrophobic surfactant of the polyethoxylated castor oil type and a hydrophilic sorbitol-polyethoxylated fatty acid ester type. The pyrolysis of the digestate was carried out in a continuous system, in a quartz tubular reactor, positioned in the central area of a vertical furnace pro

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Loganathan, P., Q. Liu, M. J. Hedley, and C. W. Gray. "Chemical fractionation of fluorine in soils with a long-term phosphate fertiliser history." Soil Research 45, no. 5 (2007): 390. http://dx.doi.org/10.1071/sr07030.

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Elevated concentrations of fluorine (F) in pasture topsoils resulting from phosphorus (P) fertiliser (1–4% F) use are potentially toxic to grazing livestock if F absorption from ingested soil is high. Fluorine absorption by animals and the potential F toxicity is expected to vary depending on the chemical nature of the F in the ingested soil. In this paper we assess the solubility of F in 6 acidic topsoils (0–75 mm depth) under grazed pastures in New Zealand with widely different chemical characteristics, using a sequential soil P fractionation technique involving a cation/anion exchange resin

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Pant, Pawan Kumar, Shri Ram, and Aakash Mishra. "Sequential extraction of different pools of phosphorus in alluvial and acid soils of Uttarakhand." Journal of Applied and Natural Science 9, no. 4 (2017): 2280–84. http://dx.doi.org/10.31018/jans.v9i4.1524.

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The sequencing and availability of inorganic and organic fractions of phosphorus at different days interval in two soils after the fertilizer (SSP) application was the objective of this investigation. The study helped to obtain the sequence of dominating pool of phosphorus at different days intervals and the rate of release in the soil. This sequential fractionation was used for two native soils i) Alluvial soil and ii) Acidic soil, with 0 to 80 ppm SSP/ 100 gm soil added in a pot experiment and the soil samples were analyzed at different days intervals started from 5 days to 60 days. The resu

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Nikonova, Natalya N., Tatyana V. Hurshkainen, Oksana G. Shevchenko, and Alexander V. Kuchin. "“Green technology” processing of pine (Pinus sylvestris L.) and larch (Larix sibirica Ledeb.) wood greenery to produce bioactive extracts." Holzforschung 76, no. 3 (2021): 276–84. http://dx.doi.org/10.1515/hf-2021-0122.

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Abstract In order to explore the extractives of conifers an effective and environmentally friendly method of extraction with aqueous-alkaline solution allowing to isolate up to 10.4% of extractive substances (ES) from pine wood greenery and up to 6.9% from larch wood greenery was investigated. The component fractional composition of aqueous-alkaline extracts was studied. The antioxidant fraction activity of neutral and acidic components isolated from the produced extracts was evaluated. It was found that these fractions have a high antioxidant activity, where the activity of larch extract comp

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Japenga, J., and K. Harmsen. "Determination of mass balances and ionic balances in animal manure." Netherlands Journal of Agricultural Science 38, no. 3A (1990): 353–67. http://dx.doi.org/10.18174/njas.v38i3a.16593.

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Liquid and solid fractions of three different pig slurry samples and a poultry manure sample were isolated through high speed centrifugation followed by ultrafiltration. The gross ionic composition of the liquid manure fractions could be described by: K+, Na+, Ca2+, Mg2+, Cl-, bicarbonate, weakly acidic cations (ammonium) and weakly alkaline anions (acetate). Ionic balances showed an agreement of more than 98% between anionic ad cationic species. The elemental composition of a pig slurry solid fraction was determined. Mass calculations based on this analysis accounted for 98% of the total weig

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Zafeiriou, Ioannis, Konstantina Karadendrou, Dafni Ioannou, et al. "Effects of Biochars Derived from Sewage Sludge and Olive Tree Prunings on Cu Fractionation and Mobility in Vineyard Soils over Time." Land 12, no. 2 (2023): 416. http://dx.doi.org/10.3390/land12020416.

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Copper-contained products that are widely employed yearly in viticulture for vine disease management, lead to Cu accumulation in topsoil creating an increased risk for land workers and for leaching and/or uptake of Cu by plants, especially in acidic soils where Cu mobility is higher. In this study, the impact of two biochar types on Cu distribution and redistribution in fractions was evaluated in four acidic vineyard soils in relation to incubation time. The two biochars were derived from sewage sludge (SG) and olive tree prunings (OL). Soils (control) and biochar-amended soils with applicatio

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Sharma, A., and S. Sharma. "Effect of nitrogen and sulphur nutrition on storage protein quality in soybean [Glycine max (L.) Merrill]." Journal of Applied and Natural Science 10, no. 1 (2018): 296–300. http://dx.doi.org/10.31018/jans.v10i1.1620.

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The relative availabilities of nitrogen and sulphur can modulate seed storage protein composition in grain legumes and cereals. Soybean contains two major seed storage proteins, glycinins and β-conglycinins that account for approximately 70% of total protein and their composition is affected by nitrogen and sulphur supplies. The present study demonstrated the effect of sulphur (Gypsum @ 20 kg S ha-1 ) and recommended a dose of nitrogen (Urea @ 31.25 kg N ha-1 ) alone or in combination on accumulation patterns of various protein fractions and protein quality in soybean seeds under agro-climatic

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Moravčíková, Jana, Denisa Margetínyová, Zdenka Gálová, et al. "Beta-1,3-Glucanase Activities in Wheat and Relative Species." Nova Biotechnologica et Chimica 15, no. 2 (2016): 122–32. http://dx.doi.org/10.1515/nbec-2016-0013.

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Abstract The (1,3)-β-D-glucan also referred to as callose is a main component of cell walls of higher plants. Many physiological processes are associated with the changes in callose deposition. Callose is synthesised by the callose synthase complex while its degradation is regulated by the hydrolytic enzymes β-1,3-glucanases. The latter one specifically degrade (1,3)-β-D-glucans. This work is aimed to study β-1,3-glucanase activities in the leaves of plants at two leaf stage in two diploids (Agilops tauschii, Triticum monococcum L.), four tetraploids (Ae. cylindrica, Ae. triuncialis, T. ararat

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Stamou, Panagiota, Eleni V. Mikropoulou, Maria Chalkiadaki, et al. "Revealing the Potential of Chios Mastic Gum and Its Constituents for Cosmetic Applications through Chemical Profiling and Biological Evaluation." Cosmetics 11, no. 5 (2024): 155. http://dx.doi.org/10.3390/cosmetics11050155.

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Chios mastic gum (CMG), the resin of Pistacia lentiscus var. Chia, is a product with great ethnopharmacological and economic significance. This study attempts to investigate, for the first time, the activity of CMG, its fractions and isolated compounds against specific enzymes, which play pivotal roles in the degradation of proteins contained in skin connective tissue. Initially, crude CMG was subjected to extraction, fractionation and isolation through different chromatographic techniques to obtain the acidic and neutral fraction of terpenes. Additionally, the characteristic and major active

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Kubo, Yoshiyuki, Miki Yamada, Saki Konakawa, Shin-ichi Akanuma, and Ken-ichi Hosoya. "Uptake Study in Lysosome-Enriched Fraction: Critical Involvement of Lysosomal Trapping in Quinacrine Uptake but Not Fluorescence-Labeled Verapamil Transport at Blood-Retinal Barrier." Pharmaceutics 12, no. 8 (2020): 747. http://dx.doi.org/10.3390/pharmaceutics12080747.

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Lysosomal trapping at the blood–retinal barrier (BRB) was investigated through quinacrine and fluorescence-labeled verapamil (EFV) uptake. Quinacrine uptake by conditionally immortalized rat retinal capillary endothelial (TR-iBRB2) cells suggested saturable and non-saturable transport processes in the inner BRB. The reduction of quinacrine uptake by bafilomycin A1 suggested quinacrine distribution to the acidic intracellular compartments of the inner BRB, and this notion was also supported in confocal microscopy. In the study using the lysosome-enriched fraction of TR-iBRB2 cells, quinacrine u

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Rahmayuni, Erlina, Syaiful Anwar, Budi Nugroho, and Lilik T. Indriyati. "Chemical Characteristics of Exchangeable Al, Fe, Mn, and Inorganic P Fraction Ultisols at Forest, Dry Land and Rice Fields Land Use in Jasinga, Indonesia." International Journal of Environmental Science and Development 14, no. 4 (2023): 228–33. http://dx.doi.org/10.18178/ijesd.2023.14.4.1438.

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Different land use at the study site such as forest, dry land and rice fields originating from the same soil type, affects the presence of various phosphorus (P) fractions in the soil profile. The purpose of this study was to study the chemical characteristics of Al, Fe, Mn, exchangeable and inorganic P fractions of the soil on the Ultisol soil profile using forest, dry land and rice fields in Jasinga. Soil samples were taken on three horizons (Ao or Ap, AB and B) at profiles of forest soil and dry land, while in paddy fields taken at a depth of 0–20 cm, 20–40 cm and 40–60 cm from the ground s

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Yakovenko, R. E., V. G. Bakun, I. N. Zubkov, O. P. Papeta, A. N. Saliyev, and A. P. Savost'yanov. "Bifunctional cobalt catalyst for the synthesis of waxy diesel fuel by the Fischer–Tropsch method – from development to introduction. Part 2. Optimization of the catalyst component composition." Kataliz v promyshlennosti 23, no. 2 (2023): 15–25. http://dx.doi.org/10.18412/1816-0387-2023-2-15-25.

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The effect exerted by the content of metallic (Co-Al2O3/SiO2 catalyst) and acidic (ZSM-5 zeolite in the H-form) components on the properties of bifunctional catalyst for the integrated synthesis of waxy diesel fuel by the Fischer–Tropsch method was studied. Catalysts represented by a composite mixture with a boehmite binder were characterized by XRD, BET and TPR methods. The testing was performed in a flow reactor with a fixed catalyst bed at a pressure of 2.0 MPa, temperature 240 °С and gas hourly space velocity 1000 h–1. Activity and selectivity of the catalysts as well as the fractional and

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Velichkina, Ludmila, Yakov Barbashin, and Alexander Vosmerikov. "Effect of Acid Treatment on the Properties of Zeolite Catalyst for Straight-Run Gasoline Upgrading." Catalysis Research 1, no. 4 (2021): 1. http://dx.doi.org/10.21926/cr.2104004.

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The objective of this research was to analyze the effect of different concentrations of nitric and hydrochloric acids on the structural, acidic, and catalytic properties of a post-synthetic treated ZSM-5 type zeolite at various temperatures. The properties of zeolite catalysts were determined using different methods, such as the Brunauer-Emmett-Teller (BET) method for specific surface area, temperature-programmed desorption (TPD) of ammonia method for acidic properties, and a flow-through unit with fixed bed catalyst (with upgrading straight-run gasoline fraction of oil) for catalytic activiti

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Cinar Ciftci, Goksu, Per A. Larsson, Anastasia V. Riazanova, Hans Henrik Øvrebø, Lars Wågberg, and Lars A. Berglund. "Tailoring of rheological properties and structural polydispersity effects in microfibrillated cellulose suspensions." Cellulose 27, no. 16 (2020): 9227–41. http://dx.doi.org/10.1007/s10570-020-03438-6.

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Abstract Industrial production of low-charge microfibrillated cellulose (MFC) typically results in wide fibril size distributions. This polydispersity influences viscosity, overall colloidal stability, and rheological properties of MFC suspensions and gels in aqueous systems. In this work, a systematic rheological analysis is performed for industrially prepared MFC and fractions of different size distributions. Gel formation and flow characteristics (e.g., shear-thinning) of each fraction are examined under neutral and acidic conditions and compared with the unfractionated MFC suspension. The

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Ćwiąkała, Michał, Andrzej Greinert, Jakub Kostecki, and Leszek Rafalski. "The Possibility to Use Modified Flight Ash as a Neutralizer in the Acid Soils Reclamation Processes." Civil and Environmental Engineering Reports 28, no. 4 (2018): 88–104. http://dx.doi.org/10.2478/ceer-2018-0053.

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Abstract Using the alkaline fly ash after combustion of lignite as the acid soils neutralizer is a technique known for decades. Due to many disadvantages of the direct fly ash application it is sought to modify this material prior to its use. The process of fly ash modification in the magnetic activator involved breaking up fly ash to small grain sizes in order to obtain a material with a very large specific surface and modified properties. The purpose of the research was to compare the properties of unmodified fly ash with those of ash modified in the magnetic activator in terms of its useful

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Hammar, H., F. Acevedo, and S. Naito. "Transferrin and epidermal growth." Acta Dermato-Venereologica 70, no. 1 (1990): 11–17. http://dx.doi.org/10.2340/00015555701117.

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Growth of keratinocytes in explant culture of mouse ear epidermis was studied. The addition of transferrin to the culture media improved growth. Transferrin fractionated from human and fetal calf serum increased outgrowths of the cultures when compared with commercially available transferrin. An acidic transferrin fraction was present in greater amount in human serum and in fetal calf serum than that found in commercial transferrin. This fraction was more abundant in serum from psoriatic patients than in serum of healthy subjects as shown by isotachophoresis. For the culture studies, preparati

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SÁNCHEZ-ROMERO, CORAL, RAFAEL GUILLÉN, ANTONIA HEREDIA, ANA JIMÉNEZ, and JUAN FERNÁNDEZ-BOLAÑOS. "Degradation of Pectic Polysaccharides in Pickled Green Olives." Journal of Food Protection 61, no. 1 (1998): 78–86. http://dx.doi.org/10.4315/0362-028x-61.1.78.

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The changes that occur in the pectic fractions in the cell wall of olives of the Manzanilla variety (Olea europaea pomiformis) during processing (initial treatment at high pH and subsequent lactic fermentation) have been researched. After studying various conditions for fractionating the pectic polysaccharides, the most adequate were chosen, involving sequential extraction with water, imidazole-hydrochloric acid buffer, sodium carbonate, 1 M potassium hydroxide, and 4 M potassium hydroxide. In the unprocessed fruit, the fractions studied consist mainly of high-molecular-weight acidic polysacch

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Nasrabadi, Maryam Nikbakht, Michael N. A. Eskin, Usha Thiyam-Hollander, and Supratim Ghosh. "On the stability of acid-soluble pea protein-stabilized beverage emulsions against salt addition and heat treatment." RSC Advances 15, no. 23 (2025): 18430–43. https://doi.org/10.1039/d4ra06899h.

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