Study on Industrial Scale Chromatographic Separation Methods of Galactose from Biomass Hydrolysates

2010 ◽  
Vol 33 (1) ◽  
pp. 137-144 ◽  
Author(s):  
P. Saari ◽  
K. Häkkä ◽  
J. Jumppanen ◽  
H. Heikkilä ◽  
M. Hurme
Keyword(s):  
Chromatographic Separation ◽  
Industrial Scale ◽  
Biomass Hydrolysates

Antioxidant activity of three polyphenol-enriched cocoa products obtained on an industrial scale

Planta Medica ◽  
2009 ◽  
Vol 75 (09) ◽  
Author(s):  
JL Ríos ◽  
G Schinella ◽  
S Mosca ◽  
E Cienfuegos-Jovellanos ◽  
MA Pasamar ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Industrial Scale ◽  
Cocoa Products

Application of pure, thermostable, alkali-tolerant xylanase in bleaching of oxygen-delignified pine kraft pulp

TAPPI Journal ◽  
2015 ◽  
Vol 14 (11) ◽  
pp. 689-694
Author(s):  
QINGZHI MA ◽  
QI WANG ◽  
CHU WANG ◽  
NIANJIE FENG ◽  
HUAMIN ZHAI
Keyword(s):  
Intrinsic Viscosity ◽  
Chlorine Dioxide ◽  
High Purity ◽  
Kraft Pulp ◽  
Alkaline Media ◽  
Industrial Scale ◽  
Elemental Chlorine ◽  
Effect Of Oxygen ◽  
Alkaline Tolerant ◽  
Ecf Bleaching

The effect of oxygen (O2)-delignified pine kraft pulp pretreatment by high-purity, thermostable, and alkaline-tolerant xylanases on elemental chlorine free (ECF) bleaching of O2-delignification kraft pulp was studied. The study found that xylanase pretreatment preserved the intrinsic viscosity and yield of O2-delignified pulp while causing about 7% of delignification with high delignification selectivity. The xylanases with high purity, higher thermostability (75°C~80°C) in highly alkaline media (pH 8.0~9.5) could be applied on an industrial scale. Pulp pretreatment by the high-purity, thermostable, and alkaline tolerant xylanases could improve pulp brightness or reduce the chlorine dioxide (ClO2) consumption. In a D0ED1D2 bleaching sequence using the same amount of ClO2, the xylanase-pretreated pulp obtained a higher brightness (88.2% vs. 89.7% ISO) at the enzyme dose of 2 U/g pulp; or for the same brightness as control (88.2% ISO), the ClO2 dosage in the D0 stage was reduced by 27%, which represents a 16% savings in total ClO2 used for bleaching.

DETERMINATION OF MICRO-AMOUNTS OF 5β-PREGNAN-3α-OL-20-ONE IN URINE USING INFRARED-SPECTROMETRY

1962 ◽  
Vol 41 (2) ◽  
pp. 234-246 ◽  
Author(s):  
H. J. van der Molen
Keyword(s):  
Infrared Spectrum ◽  
Quantitative Determination ◽  
Acid Hydrolysis ◽  
Chromatographic Separation ◽  
Pure Form ◽  
Infrared Spectrometry ◽  
Hydrolysis Of

ABSTRACT A procedure for the quantitative determination of 5β-pregnan-3α-ol-20-one in urine is described. After acid hydrolysis of the pregnanolone-conjugates in urine, the free steroids are extracted with toluene. Pregnanolone is isolated in a pure form as its acetate; after chromatographic separation of the free steroids on alumina, the fraction containing pregnanolone is acetylated and rechromatographed on alumina. Quantitative determination of the isolated pregnanolone-acetate is carried out with the aid of the infrared spectrum recorded by a micro KBr-wafermethod. The reliability of the method under various conditions is discussed under the headings, specificity, accuracy, precision and sensitivity. It is possible to determine 30–40 μg pregnanolone in a 24-hours urine portion with a precision of 25%.

Reagents for detection of carboxylate anion ligands after chromatographic separation of zinc carboxylato complexes

2003 ◽  
Vol 16 (4) ◽  
pp. 286-288 ◽  
Author(s):  
Andrej Oriňák ◽  
Monika Ádámová ◽  
Ladislav Halás ◽  
Peter Tomčík ◽  
Martina Justinová
Keyword(s):  
Chromatographic Separation ◽  
Carboxylate Anion

Interpretation of the mechanisms of chromatographic separation on CN-silica. Part I: TLC of metal complexes

2002 ◽  
Vol 15 (5) ◽  
pp. 341-344 ◽  
Author(s):  
Helena Majstorović ◽  
Živoslav Tešić ◽  
Dušanka Milojković-Opsenica
Keyword(s):  
Metal Complexes ◽  
Chromatographic Separation

Interpretation of the mechanisms of chromatographic separation on CN-silica. Part II. TLC of some phenols

2004 ◽  
Vol 17 (1) ◽  
pp. 9-13 ◽  
Author(s):  
Helena Majstorović ◽  
Danijela Ratkov-Žebeljan ◽  
Živoslav Tešić ◽  
Dušanka Milojković-Opsenica
Keyword(s):  
Chromatographic Separation
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