A novel model of humin

Our poor knowledge of the structure and formation of humic substances stems from the lack of suitable tools which enable the study of the molecular structure of these complex, yellow-brownish materials. Here, several findings using a combination of isotopic, pyrolytic, microscopic and gas chromatogr...

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Bibliographic Details
Published inAnalusis Vol. 27; no. 5; pp. 385 - 386
Main Author Lichtfouse, Eric
Format Journal Article
LanguageEnglish
Published EDP Sciences 01.06.1999
Subjects
Agricultural sciences
Life Sciences
Soil study
13C
phytol
encapsulation
sterol
soil
lignin
n-alkanes
biomarker
maize
humic acids
bound residues
humin
pristene
Maillard
biopolymer
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Summary:Our poor knowledge of the structure and formation of humic substances stems from the lack of suitable tools which enable the study of the molecular structure of these complex, yellow-brownish materials. Here, several findings using a combination of isotopic, pyrolytic, microscopic and gas chromatographic methods lead to the proposal of a novel model of humin structure. The formation of humin should thus involve at least three processes: selective preservation of microbial, straight-chain biopolymers; physical encapsulation of apolar substances by weak forces; and chemical binding by covalent bonds.
ISSN:0365-4877
1286-482X
DOI:10.1051/analusis:1999270385