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- W2381988601 abstract "Lignins were extracted from Malania oleifera shell and branch by traditional alkaline method,ultrasound-assisted method and microwave-assisted method.The yields and the contents of the lignins from Malania oleifera shell and branch were determined.Meanwhile,the lignins obtained were structurally analyzed by infrared(IR) and UV spectroscopy.Determined by Klason method,the contents of lignin in Malania oleifera shell and branch were 44.41%±0.65% and 34.57%±0.52% respectively.The extraction rates of lignins reached 45.21%±0.59% and 63.78%±0.73% respectively from Malania oleifera shell and branch under the conditions of ultrasound-assisted extraction at 40 ℃ water bath for 1 h with 0.5 mol/L KOH water as the solvent and the solvent/material ratio of 30∶ 1(mL/g).UV and IR spectral analyses show that the lignin extracted by ultrasound-assisted method remained its original structure,and there were many syringyl and guaiacyl groups in Malania oleifera shell and branch.The relative molecular weight of the lignins extracted by the three different extraction methods was compared by adopting the viscosity method." @default.
- W2381988601 created "2016-06-24" @default.
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- W2381988601 date "2013-01-01" @default.
- W2381988601 modified "2023-09-28" @default.
- W2381988601 title "Analysis of the Chemical Component of Lignin Extract from Malania oleifera" @default.
- W2381988601 hasPublicationYear "2013" @default.
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