Control of lignin solubility and particle formation modulates its antioxidant efficiency in lipid medium: an in situ attenuated total reflectance FT-IR study

Søren Talbro Barsberg; Lisbeth Garbrecht Thygesen; Anand Ramesh Sanadi

doi:10.1021/ef500368x

Control of lignin solubility and particle formation modulates its antioxidant efficiency in lipid medium: an in situ attenuated total reflectance FT-IR study

Søren Talbro Barsberg, Lisbeth Garbrecht Thygesen, Anand Ramesh Sanadi

Forest, Nature and Biomass

4 Citations (Scopus)

Abstract

Lignin is an abundant plant polymer usually regarded as waste material. In the present work, antioxidant properties of lignin preparations with differing lipid solubility were studied using biodiesel as a convenient lipid test substrate. In place of formerly used assays, we used attenuated total reflectance (ATR) FT-IR spectroscopy to follow in situ biodiesel autoxidation on a heated ATR crystal as a function of time. The study demonstrates that a complex balance between intrinsic (chemical) efficiency, solubility, and particle formation controls the antioxidant efficiency of differently prepared lignin fractions. It was found that solubility and particle formation of lignin preparations strongly modulate its antioxidant efficiency and that these properties might depend on the presence of lipid components within the original lignin source.

Original language	English
Journal	Energy & Fuels
Volume	28
Issue number	7
Pages (from-to)	4539−4544
Number of pages	6
ISSN	0887-0624
DOIs	https://doi.org/10.1021/ef500368x
Publication status	Published - 17 Jul 2014

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Control of lignin solubility and particle formation modulates its antioxidant efficiency in lipid medium: an in situ attenuated total reflectance FT-IR study. / Barsberg, Søren Talbro; Thygesen, Lisbeth Garbrecht ; Sanadi, Anand Ramesh.
In: Energy & Fuels, Vol. 28, No. 7, 17.07.2014, p. 4539−4544.

Research output: Contribution to journal › Journal article › Research › peer-review

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AU - Sanadi, Anand Ramesh

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N2 - Lignin is an abundant plant polymer usually regarded as waste material. In the present work, antioxidant properties of lignin preparations with differing lipid solubility were studied using biodiesel as a convenient lipid test substrate. In place of formerly used assays, we used attenuated total reflectance (ATR) FT-IR spectroscopy to follow in situ biodiesel autoxidation on a heated ATR crystal as a function of time. The study demonstrates that a complex balance between intrinsic (chemical) efficiency, solubility, and particle formation controls the antioxidant efficiency of differently prepared lignin fractions. It was found that solubility and particle formation of lignin preparations strongly modulate its antioxidant efficiency and that these properties might depend on the presence of lipid components within the original lignin source.

AB - Lignin is an abundant plant polymer usually regarded as waste material. In the present work, antioxidant properties of lignin preparations with differing lipid solubility were studied using biodiesel as a convenient lipid test substrate. In place of formerly used assays, we used attenuated total reflectance (ATR) FT-IR spectroscopy to follow in situ biodiesel autoxidation on a heated ATR crystal as a function of time. The study demonstrates that a complex balance between intrinsic (chemical) efficiency, solubility, and particle formation controls the antioxidant efficiency of differently prepared lignin fractions. It was found that solubility and particle formation of lignin preparations strongly modulate its antioxidant efficiency and that these properties might depend on the presence of lipid components within the original lignin source.

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Control of lignin solubility and particle formation modulates its antioxidant efficiency in lipid medium: an in situ attenuated total reflectance FT-IR study

Abstract

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