Abstract：
:The aim of this work was to study the difference in properties of lignins, those (organosolv lignins (ORGLs, 12±3% yield and 93±5% mass balance) were isolated from diverse rice husk (RH) substrates using organosolv procedure (water:ethanol, H2SO4) carried out at 180°C for 1h. To identify the possible alterations in lignin structures several bulk and molecular level advanced characterization tools were employed. Even though lignins were extracted using common isolation procedure from three varieties of similar species of RH; from XRD, GPC, and elemental analysis it was found that those have comparable properties on bulk level. But molecular level analysis conducted using UV-vis, ATR, 1D/2D HSQC NMR techniques could help disclose that isolated lignins have varying concentrations of G, H, S and T substructures. Additionally, the double bond equivalence of 4.4-4.7 reveals that few of the aromatic rings are devoid of substituent.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Singh SK,Dhepe PLdoi
10.1016/j.biortech.2016.09.042subject
Has Abstractpub_date
2016-12-01 00:00:00pages
310-317eissn
0960-8524issn
1873-2976pii
S0960-8524(16)31299-8journal_volume
221pub_type
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