MONOSACCHARIDE COMPOSITION OF SELECTED CANADIAN PEATS

1980 ◽  
Vol 60 (1) ◽  
pp. 1-7 ◽  
Author(s):  
H. MORITA ◽  
W. G. MONTGOMERY

The neutral monosaccharides released by the acid hydrolysis of five peat profiles were analyzed by ion exchange chromatography and gas-liquid chromatography in order to ascertain whether monosaccharide composition can be used to differentiate peats. Glucose, mannose and galactose were the predominant monosaccharides found. Changes observed with depth in the relative abundances of the monosaccharides were not always correlated with the degree of decomposition as measured by fibre content or pyrophosphate index. The arabinose to xylose ratio was a diagnostic chemical feature which reflected the degree of decomposition of the peats.

1989 ◽  
Vol 56 (3) ◽  
pp. 391-397 ◽  
Author(s):  
K. F. Ng-Kwai-Hang ◽  
J. P. Pélissier

SummaryThe rapid isolation of major bovine caseins in gram quantities was investigated. Whole casein was precipitated from individual cow's milk by adjusting the pH to 4·6 and the precipitated casein was suspended in 4·5 M urea (pH 8·0) containing 0·02 M imidazole and 0·03 M β-mercaptoethanol, and bound on a QAE Zeta Prep 250 cartridge. Stepwise elution with the urea/imidazole β-mercaptoethanol buffer and varying amounts of NaCl gave five well resolved peaks, which were identified by polyacrylamide gel electrophoresis and fast protein liquid chromatography to be pure γ-casein, κ-casein. β-casein, β-casein and αs-casein, respectively. The ion exchange cartridge was regenerated by flushing with buffer containing 0·50 Μ-NaCl followed by equilibration with starting buffer before separation of next sample. The time required to run each sample including cartridge regeneration and equilibration was 4 hours.


Author(s):  
Angela Boxi ◽  
Isha Parikh ◽  
Radhika B S ◽  
Shryli K S

The present review is based on papers published between 1990 and 2020 and gives Comparative information about the most common protein purification techniques Gel-Filtration, Chromatography, Ion-Exchange Chromatography, Electrophoresis, Affinity Chromatography, and Dialysis, High-Pressure Liquid Chromatography. and their applications.


2000 ◽  
Vol 1 (1) ◽  
pp. 1-5
Author(s):  
Yusdar Zakaria

ABSTRACT.Lactococcus lactis subsp. Lactis YZI was isolated from M17 agar in which diluted Dadih was poured and incubated at 30 0C for 48 h. Taxonomix properties of the isolate were examined according to Bergey’s Manual of Systematic Bacteriologi and Manual for  Identification of Medical Bacteria. The isolation of polysaccharide from the precipitant was performed on an ion-exchange chromatography. The result showed that the polysaccharides produced by Lactococus lactis subsp. lactis YZI were neutral sugar (unadsorbrd fraction) and glycoconjugated (absorbed fraction). The neutral sugar had molecular weight of 10,000 and 20,000 with and α-glycoside linkage. The monosaccharide composition was mannose, glucose and galactose with a molar ratio of 1 :1,5 : 4,9.


2018 ◽  
Vol 6 (2) ◽  
pp. 69
Author(s):  
Indah Rahmi Sari ◽  
Ade Ayu Oksari ◽  
Irma Kresnawaty

Separation of Amino acid from Liquid waste of Oil palm Factory with Ion Exchange Chromatography Research on Separation of Amino Acid Liquid Waste mills with Ion Exchange Chromatography was carried out from October to November 2015. The results of  hydrolysis of 6 N HCl results showed  that the highest absorbance reading was obtained at a concentration of eluent of 0,2 and 0,6 M NaCl, while the results of the protease enzyme hydrolysis the highest absorbance reading at NaCl eluent 0,2 and 1 M. There was no significant difference in the results of separation by ion exchange chromatography, showed that the concentration of NaCl eluent is not very influential, so for subsequent analysis used only one concentration of the eluent. Results of linear regression obtained was equal to 0,9946, these results indicate that the series standard amino acid lysine has a value that is linear as it approaches 1. The amino acid levels obtained on the sample results LCPKS hydrolysis with 6 N HCl which was about 0 to 8.82 ppm and samples of the protease enzyme hydrolysis of about 0 to 4.31 ppm. Amino acid levels obtained were still far from the expected.Keywords: Amino Acid, Oil Palm, Liquid Waste, Ion Exchange Chromatography ABSTRAKPenelitian mengenai Pemisahan Asam Amino dari Limbah Cair Pabrik Kelapa Sawit dengan Kromatografi Penukar Ion telah dilaksanakan dari bulan Oktober sampai November 2015. Hasil hidrolisis HCl 6 N menunjukkan bahwa pembacaan absorbansi tertinggi diperoleh pada konsentrasi eluen NaCl 0,2 dan 0,6 M, sedangkan hasil hidrolisis enzim protease pembacaan absorbansi tertinggi pada eluen NaCl 0,2 dan 1 M. Tidak ada perbedaan yang signifikan pada hasil pemisahan dengan kromatografi penukar ion ini, menunjukkan bahwa konsentrasi eluen NaCl tidak terlalu berpengaruh, sehingga untuk analisis selanjutnya digunakan hanya satu konsentrasi eluen. Hasil regresi linear yang diperoleh yaitu sebesar 0,9946, hasil tersebut menunjukkan bahwa deret standar asam amino lisin mempunyai nilai yang linear karena mendekati 1. Kadar asam amino yang diperoleh pada sampel hasil hidrolisis LCPKS dengan HCl 6N yaitu sekitar 0 – 8,82 ppm dan sampel hasil hidrolisis enzim protease sekitar 0 – 4,31 ppm. Kadar asam amino yang diperoleh masih jauh dari yang diharapkan.Kata Kunci: Asam Amino, Minyak Kelapa Sawit, Limbah Cair, Kromatografi Penukar Ion


1976 ◽  
Vol 59 (2) ◽  
pp. 243-250
Author(s):  
James J Nelson

Abstract Quantitation of o- and p-sulfamoylbenzoic acid residues in saccharin and its sodium salt is achieved by a method comprising methanolic extraction and high-performance ion exchange chromatography. A commercially available anion exchange column was employed with an aqueous buffered (pH 9.2) mobile phase. As little as 80 ppm of the ortho-isomer and 25 ppm of the para-isomer can be accurately determined. The levels of detectability (2 times noise) are estimated as 8 ppm (0.16 μg on column) and 2.5 ppm (0.05 μg on column), respectively. Recoveries from saccharin ranged from 92.7 to 96.5% (ortho) and from 92.2 to 103.3% (para). Recoveries from the sodium salt ranged from 93.1 to 104.4% (ortho) and from 93.5 to 97.8% (para). Of 9 other potential saccharin impurities tested separately, only one was found to interfere slightly in the chromatographic part of the procedure.


2003 ◽  
Vol 81 (6) ◽  
pp. 387-394 ◽  
Author(s):  
Patrick H.K Ngai ◽  
T B Ng

A monomeric protein, with a molecular mass of 25 kDa and an N-terminal sequence resembling a segment of chitin synthase, was isolated from the seeds of the black soybean Glycine soja. The protein, designated glysojanin, demonstrated potent antifungal activity against the fungi Fusarium oxysporum and Mycosphaerella arachidicola. It inhibited HIV-1 reverse transcriptase with an IC50 of 47 µmol/L, [methyl-3H]thymidine incorporation by mouse spleen cells with an IC50 of 175 µmol/L, and translation in the rabbit reticulocyte lysate with an IC50 of 20 µmol/L. Glysojanin was purified using a procedure that involved ion-exchange chromatography on DEAE-cellulose, affinity chromatography on Affi-gel blue gel, ion-exchange chromatography by fast protein liquid chromatography on Mono S, and gel filtration by fast protein liquid chromatography on Superdex 75.Key words: antifungal protein, seeds, soybean, purification.


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