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Lukas Sommerauer ; Matthew Konkler ; Gerald Presley , et al. Massachusetts Institute of Technology,2024. DOI: 10.1515/hf-2023-0130
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Abstract: Bark residues from Douglas fir are an abundant resource that is currently used primarily in low-value energy recovery or is landfilled. Bark extractives are rich in diverse compounds like terpenes, fatty acids, phenols, and sugars with potential uses in a variety of high value applications. The study explores the potential of enzymatic hydrolysis to improve phenolic compounds from Douglas fir bark. It also assesses differences in chemical composition among rhytidome, phloem, and comingled bark fractions from an industrial waste pile. Phloem fractions exhibit higher yields of extractives, rhytidome fractions have elevated lignin levels, while the comingled fraction lies between the two except in ash content which was higher than in the separated fractions. Fungal decay tests with Gloeophyllum trabeum and Coniophora puteana on extract treated wood suggest potential for growth inhibition in extracts, about 58–31 % and 30–7% mass loss (in average) respectively, but due to high mass loss at low concentrations an enzymatic modification approach seems crucial for enhanced inhibition. Growth responses in whole-cell fermentation approach display variability depending on the participating microorganisms. Enzymatic hydrolysis with beta-glucosidase improved the antioxidant properties of bark extracts and holds promise for altering the chemical composition and enhancing bioactivity.
Keywords: antioxidant properties ; aqueous extract ; Douglas fir bark ; enzymatic hydrolysis ; organism growth responses
Purchased from AmBeed: 210230-40-3 ; 143-66-8 ; 2065-67-0
CAS No. : | 2065-67-0 | MDL No. : | MFCD00011917 |
Formula : | C24H20IP | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | AEFPPQGZJFTXDR-UHFFFAOYSA-M |
M.W : | 466.29 | Pubchem ID : | 2724164 |
Synonyms : |
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Signal Word: | Danger | Class: | 6.1 |
Precautionary Statements: | P261-P280-P301+P312 | UN#: | 2811 |
Hazard Statements: | H301-H311-H332 | Packing Group: | Ⅲ |
GHS Pictogram: |