Home /H-1 AND C-13 NMR SPECTROSCOPIC STUDY OF EXTRACTS FROM CORKS OF RUBUS-IDAEUS, SOLANUM-TUBEROSUM, AND QUERCUS-SUBER

H-1 AND C-13 NMR SPECTROSCOPIC STUDY OF EXTRACTS FROM CORKS OF RUBUS-IDAEUS, SOLANUM-TUBEROSUM, AND QUERCUS-SUBER

TitleH-1 AND C-13 NMR SPECTROSCOPIC STUDY OF EXTRACTS FROM CORKS OF RUBUS-IDAEUS, SOLANUM-TUBEROSUM, AND QUERCUS-SUBER
Publication TypeJournal Article
Year of Publication1985
AuthorsZIMMERMANN, W., NIMZ H., & SEEMULLER E.
JournalHOLZFORSCHUNG
Volume39
Pagination45-49
Keywords1H and 13C NMR, aromatic substances, Cork, Quercus suber, Rubus idaues, Solanum tuberosum, suberin
Abstract

Pre-extracted corks from Rubus-ideaus L., Solanum-tuberosum L., and Quercus-suber L., were milled in a vibrational ball mill. The material released was extracted with aqueous dioxane and DMF, Gel permeation chromatography of the extracts resulted in high and low molecular weight fractions. 3H and 13C NMR spectroscopic examination revealed that these fractions consisted mainly of saturated and unsaturated aliphatic compounds, alcohols, acids and esters. Aromatic substances could early be detected in very small amounts. Signals correspinding to guaiacyl, syringyl, and dilignol units were not found indicating that lignin is not prevent in the examined cork extracts.