xylan


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xylan

[′zī‚lan]
(biochemistry)
A polysaccharide composed of the pentose sugarD-xylose.
References in periodicals archive ?
Furfural is obtained through the cleavage of the bond between O-C5 and ring formation between the C2 and C5 positions on the main chain of xylan (Shen et al.
His mum Carol said: "Xylan had fallen and was in and out of consciousness so staff followed protocol and didn't move him until an ambulance arrived.
The importance of xylan for the strength propertiesofsprucekraftfibres.
Media supplemented with soybean hulls and oat spelt xylan also exhibited high xylanase activity, corresponding to a 3.60 [+ or -] 0.03 U [mL.sup.-1] and 3.34 [+ or -] 0.00 U [mL.sup.-1], respectively.
Culture was grown on agar plates containing 0.5% (w/v) Birchwood xylan, 0.5% yeast extract in mineral salt medium containing (g/L) NaCl 150, Mg[Cl.sub.2] 5.0, [K.sub.2]S[O.sub.4] 0.2, and agar with pH adjusted to 9.0.
Steam explosion has a few limitations since the lignin-carbohydrate matrix is not completely broken down; degradation products are generated that reduce the efficiency of the hydrolysis and fermentation steps; and a portion of the xylan fraction is destroyed.
However, few researchers have made attempts to study biomaterial films by blending PVA with xylan.
Further information on the effect of temperature on xylanase II alone or in the presence of ligands (soluble xylan and D-glucono-1,5-lactone, GL) and stabilizers (sorbitol) was gained through DSC.
However, wheat contains non-starch polysaccharides, including xylan, glucan, cellulose, and mannan, that reduce feed efficiency and nutrient digestibility.
Thus, when a polymer is hydrolyzed and yields xylose, it is a xylan; in the same way, hemicelluloses include mannans, glucans, arabinans and galactans (Whistler and Richards 1970; Viikari et al.1994; Uffen 1997; Ebringerova and Heinze 2000).
Just joined Alcatel upon its acquisition of Xylan, a pioneer in the Ethernet Switch and VLAN markets, where he successfully developed a profitable channel and distribution sales division after starting as one of the initial sales professionals hired at the start-up.