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• W2891923799 startingPage "1191" @default.
• W2891923799 abstract "Xylooligosaccharides (XOS) from lignocellulosic biomass (LCB) have found widespread applications in food, feed, nutraceuticals and pharamecutical industries. Enzymatic degradation of LCB for generation of XOS have gained impetus in recent times In the present investigation an extracellular thermo-alkali stable xylanase from Aspergillus oryzae LC1 was purified by using PEG 8000/MgSO4 aqueous two-phase system and was capable of hydrolysing various agricultural residues into XOS system. Highest activity was observed using 11.3% (w/w) PEG 8000 and 22.5% (w/w) sulphate salt with maximum purification factor (13-fold), highest yield (86.8%) and partition coefficient (8.8%). The purification of the crude enzyme also resulted in decrement of β-xylosidase activity (29.8 U/mL to 0.6 U/mL). The molecular weight of enzyme was estimated ~35 kDa. The highest residual activity was obtained with birch wood xylan as substrate with Km and Vmax of 0.2 mg/mL and 172.2 μmol min−1 mg−1 respectively. The metal ions Fe2+, Ag2+, Mg2+, Mn+ and Co+ enhanced xylanase activity while EDTA, DMSO and SDS acted as inhibitor. The effect of Fe+2 was confirmed by the circular dichroism experiment. The partially purified enzyme was capable of generating XOS i.e. xylobiose (0.68 mg/g), xylotriose (2.47 mg/g) and xylotetraose (2.29 mg/g) by direct enzymatic hydrolysis of untreated sugarcane baggase, wheat straw and wheat bran respectively." @default.
• W2891923799 created "2018-09-27" @default.
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• W2891923799 date "2019-02-01" @default.
• W2891923799 modified "2023-10-18" @default.
• W2891923799 title "Purification and characterization of a thermo-acid/alkali stable xylanases from Aspergillus oryzae LC1 and its application in Xylo-oligosaccharides production from lignocellulosic agricultural wastes" @default.
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• W2891923799 doi "https://doi.org/10.1016/j.ijbiomac.2018.09.070" @default.
• W2891923799 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30223058" @default.
• W2891923799 hasPublicationYear "2019" @default.
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