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You searched for: Journal Industrial crops and products Remove constraint Journal: Industrial crops and products Publication Year 2017 Remove constraint Publication Year: 2017 Source 2017 v.103 Remove constraint Source: 2017 v.103 Subject carboxylic acids Remove constraint Subject: carboxylic acids
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1. Aqueous organic solvent fractionation as means to improve lignin homogeneity and purity

Author:
Jääskeläinen, A.-S.; Liitiä, T.; Mikkelson, A.; Tamminen, T.
Source:
Industrial crops and products 2017 v.103 pp. 51-58
ISSN:
0926-6690
Subject:
acetone; carbohydrates; carboxylic acids; chemical precipitation; ethanol; fractionation; lignin; molecular weight; nitrogen; solvents; standard operating procedures; sulfur
Abstract:
... Lignin’s heterogeneous polymeric structure limits its utilisation in high-value applications. This paper describes a protocol for kraft lignin precipitation fractionation from aqueous ethanol, acetone and propyleneglycol monomethyl ether solution by adding water as nonsolvent. The solvent-insoluble fractions possessed high molar mass (Mw 4300–18900g/mol), high polydispersity (2.2–5.6), high nitrog ...
DOI:
10.1016/j.indcrop.2017.03.039

2. Multi-scale instrumental analyses for structural changes in steam-treated bamboo using a combination of several solid-state NMR methods

Author:
Nishida, Masakazu; Tanaka, Tomoko; Miki, Tsunehisa; Ito, Takafumi; Kanayama, Kozo
Source:
Industrial crops and products 2017 v.103 pp. 89-98
ISSN:
0926-6690
Subject:
bamboos; carboxylic acids; heat treatment; hemicellulose; infrared spectroscopy; lignin; nuclear magnetic resonance spectroscopy; pyrolysis; scanning electron microscopy; sodium hydroxide; steam; temperature; thermogravimetry; vascular bundles
Abstract:
... Steam-treated bamboo was analyzed for structural changes at multiple scales using several solid-state NMR methods, including relaxation time analysis. Subtle changes due to different processing conditions were analyzed by 13C magic angle spinning (MAS) NMR using cross polarization (CP), single pulse with dipolar decoupling (DD), and pulse saturation transfer (PST). The analyses also used 1H spin-l ...
DOI:
10.1016/j.indcrop.2017.03.041