Results 211 to 220 of about 781,220 (236)
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Sulfhydryl Oxidation of Mutants with Cysteine in Place of Acidic Residues in the Lactose Permease
Biochemistry, 1998To examine further the role of charge-pair interactions in the structure and function of lactose permease, Asp237 (helix VII), Asp240 (helix VII), Glu126 (cytoplasmic loop IV/V), Glu269 (helix VIII), and Glu325 (helix X) were replaced individually with Cys in a functional mutant devoid of Cys residues.
J, Voss +3 more
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Enzymatically oxidized lactose and derivatives thereof as potential protein cross-linkers
Carbohydrate Research, 2006The enzyme galactose oxidase [EC 1.1.3.9] was applied to convert lactose, lactylamine and lactobionic acid into their corresponding 6'-aldehyde compounds. The potential protein cross-linking ability of these oxidized lactose and derivatives thereof was investigated using n-butylamine as the model compound.
Arjan, van Wijk +3 more
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Carbohydrate Research, 2008
Galacto-oligosaccharides, complex mixtures of various sugars, are produced by transgalactosylation from lactose using beta-galactosidase and are of great interest for food and feed applications because of their prebiotic properties. Most galacto-oligosaccharide preparations currently available in the market contain a significant amount of ...
Maischberger T +6 more
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Galacto-oligosaccharides, complex mixtures of various sugars, are produced by transgalactosylation from lactose using beta-galactosidase and are of great interest for food and feed applications because of their prebiotic properties. Most galacto-oligosaccharide preparations currently available in the market contain a significant amount of ...
Maischberger T +6 more
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Gold as active phase of BN-supported catalysts for lactose oxidation
Applied Catalysis A: General, 2015Abstract Au/h-BN catalysts have been prepared by wet impregnation in order to combine the high activity of gold with the promising h-BN support to optimize the catalytic performances in lactose oxidation. After 1 h reaction, the catalysts were more active than all the Pd/h-BN catalysts described in previous works: 100% yield was reached after 2 h for
Nathalie Meyer +4 more
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Oxidation of methyl linoleate encapsulated in amorphous lactose-based food model
Journal of Agricultural and Food Chemistry, 1991A food model was used to study the effect of physical changes in the amorphous matrtix on the rate of lipid oxidation. The glass transition temperature (T g ) and crystallisation behaviour of the material were determined by using differential scanning calorimetry. The rate of oxidation was measured spectrophotometrically in samples incubated at various
Yasunobu Shimada +2 more
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Journal of Agricultural and Food Chemistry, 2005
Whole milk powder with an initial water content of 4.4% (w/w) and a water activity of 0.23 stored in hermetically sealed vials for up to 147 days below (37 and 45 degrees C) and above (55 degrees C) the glass transition temperature (T(g) determined to have the value 48 degrees C) showed a strong temperature dependence for quality deterioration ...
Thomsen, Marianne +3 more
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Whole milk powder with an initial water content of 4.4% (w/w) and a water activity of 0.23 stored in hermetically sealed vials for up to 147 days below (37 and 45 degrees C) and above (55 degrees C) the glass transition temperature (T(g) determined to have the value 48 degrees C) showed a strong temperature dependence for quality deterioration ...
Thomsen, Marianne +3 more
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Artificial Cells, Blood Substitutes, and Biotechnology, 2003
Chitosan microcarriers were prepared using oxidized lactose as a cross-linking agent which was oxidized by sodium periodate. The effect of amount of oxidized lactose on the preparation of chitosan microcarriers was studied and optimized. Rat hepatocytes cultivated on chitosan microcarriers cross-linked by oxidized lactose retained the spherical shape ...
Liguo, Zhang +4 more
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Chitosan microcarriers were prepared using oxidized lactose as a cross-linking agent which was oxidized by sodium periodate. The effect of amount of oxidized lactose on the preparation of chitosan microcarriers was studied and optimized. Rat hepatocytes cultivated on chitosan microcarriers cross-linked by oxidized lactose retained the spherical shape ...
Liguo, Zhang +4 more
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Colloid Journal, 2012
The kinetics and mechanism of the oxidation of lactose by N-bromophthalimide in the absence and presence of cetyltrimethylammonium bromide and sodium dodecyl sulfate micelles was investigated in the presence of sulfuric acid medium. Under pseudo-first-order conditions reaction rate agreed with a first-, fractional- and negative fractional-order ...
Yokraj Katre, Minu Singh, Ajaya K. Singh
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The kinetics and mechanism of the oxidation of lactose by N-bromophthalimide in the absence and presence of cetyltrimethylammonium bromide and sodium dodecyl sulfate micelles was investigated in the presence of sulfuric acid medium. Under pseudo-first-order conditions reaction rate agreed with a first-, fractional- and negative fractional-order ...
Yokraj Katre, Minu Singh, Ajaya K. Singh
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Materials Research Proceedings
Abstract. Kinetics and Mechanism of Trichloroisocyanuric acid to oxidize lactose in perchloric acid solution have been studied. The reaction follows pseudo-first-order kinetics with respect to the oxidant, while exhibiting a fractional order dependence on lactose concentration.
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Abstract. Kinetics and Mechanism of Trichloroisocyanuric acid to oxidize lactose in perchloric acid solution have been studied. The reaction follows pseudo-first-order kinetics with respect to the oxidant, while exhibiting a fractional order dependence on lactose concentration.
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