01584nas a2200145   4500008004100000245013400041210006900175260000800244300001200252490000800264520099100272100002201263700002201285856013101307       2018                        eng d00a Experimental evidences for existence of varying moieties and functional groups in assorted crop waste derived organosolv lignins0 aExperimental evidences for existence of varying moieties and fun  cSEP  a144-1510 v1193 aIsolation of organosolv lignins (ORGLs, water:ethanol, 180 degrees C, 1 h, 93 +/- 5% mass balance) from various lignocellulosic materials like rice husk (RH), wheat straw (WS), bagasse (BG) & wood chips (WC) was done and experimental evidences are provided to perceive the differences in the structures of isolated lignins. To achieve this on bulk level, lignins were characterized by XRD, GPC, TGA & elemental analysis and on molecular level using UV-vis, ATR, 1D/2D HSQC NMR techniques. Besides isolated lignins, crop wastes and pulps were also characterized to divulge details on their properties. It was revealed that lignins have varying concentrations of sinapyl (S), coniferyl (G) and p-coumaryl alcohols (H) and tricin (T) moieties. While, Tricin (T) type lignin moieties are observed only in RH and WS derived lignins, RH derived lignin has higher concentration of side chains than other isolated lignins. Additionally, it is discovered that most lignins have G as main moiety.1 aSingh, Sandip, K.1 aDhepe, Paresh, L.  uhttps://library.ncl.res.in/content/experimental-evidences-existence-varying-moieties-and-functional-groups-assorted-crop-waste