| Autor: |
Alves-Ferreira, Júnia, Miranda, Isabel, Duarte, Luís, Roseiro, Luísa, Lourenço, Ana, Quilhó, Teresa, Cardoso, Sofia, Fernandes, Maria, Carvalheiro, Florbela, Pereira, Helena |
| Zdroj: |
Biomass Conversion and Biorefinery; 20240101, Issue: Preprints p1-13, 13p |
| Abstrakt: |
Different biomass fractions of Cistus ladaniferand solid residues from essential oil distilleries were structurally and chemically evaluated. The C. ladaniferbiomass fractions showed chemical differences mainly related to extractives (e.g., 10.8% and 53.7% in stems and leaves) and lignin (e.g., 21.2% and 15.4% in stems and leaves). The distillery residues were characterized by 41.5% extractives and 19.3% lignin, and polysaccharide glucose 51.7% and xylose 24.9% of total monosaccharides. The polar extracts had a high content of phenolics and revealed high antioxidant activity (IC503.2 μg/mL and 4.7 μg/mL in stems and cysts extracts). The lignin structure showed a predominance of S units in the stem (H:G:S of 1:25:50) and a balanced proportion of H, G, and S units in leaves (H:G:S of 1:1.4:1). The characteristics of C. ladaniferbiomass allow several routes of valorization. The high extractive contents point out to the potential use as a source of phytochemicals by applying extraction procedures, while the remaining lignocellulosic material after extraction may be directed towards lignin and carbohydrates applications. The use of C. ladaniferbiomass for an extractives-lignocellulosic-based biorefinery therefore represents a potential valorization that may contribute to additional revenue for the present essential oil distilleries. |
| Databáze: |
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