Wood raw material undergoes appropriate working processes that transform them into semi-finished products for industry. All of these processes can modify the property and performance of wood products influencing, as in case of thermo-treatment, some structural compounds and also the secondary metabolites, such as extractives. Extractives are the predominant contributors to color, fragrance, durability, pulping, drying, adhesion, hydrophobicity, and acoustic properties of wood. Many extractives have specific biological activities, and various woods have been used as source of crude drugs and medicines for centuries. Extractives ofen are extracted with chemical solvents, however the need of the green extraction techniques is growing up. In addition the researcher’s interest versus the Mediterranean wood species is rising respect to chemotaxonomy of woody plants respect to tropical woods. However, incomplete information on the green extraction techniques and on the potential use of extractives as value-added chemical products are up to now available to native wood species. The main goals of this research was: (i) to use water as solvents to extract secondary metabolites from some wood species (Cedrus deodara Roxb., Alnus cordata Desf., Qercus cerris L., Fagus sylvatica L., Castanea sativa Mill.); (ii) to analyze the extractives content and composition; (iii) to explore the efect of thermo vacuum process on the extractives content and composition.The composition of extractives was determined by solid phase microextraction (SPME) and gas chromatographic in combination with mass spectrometry technique (GC-MS). Interestingly, our results revealed a specie-specific efect in the quali-quantitative extractive composition and how the thermo vacuum pro - cess conditioned the chemical composition of extractive of wood species. Further inspection highlighted that the most representative extractive compounds belong to diferent class of chemical compounds and they can be used commonly employed in the biology and biotechnology industries, such as a flavoring agent in foods, pharmaceuticals products or in the perfume essences.
Green extraction techniques and potential use of extractives
Lovaglio T
;Mecca M;D’Auria M;Moretti N;Todaro L.
2017-01-01
Abstract
Wood raw material undergoes appropriate working processes that transform them into semi-finished products for industry. All of these processes can modify the property and performance of wood products influencing, as in case of thermo-treatment, some structural compounds and also the secondary metabolites, such as extractives. Extractives are the predominant contributors to color, fragrance, durability, pulping, drying, adhesion, hydrophobicity, and acoustic properties of wood. Many extractives have specific biological activities, and various woods have been used as source of crude drugs and medicines for centuries. Extractives ofen are extracted with chemical solvents, however the need of the green extraction techniques is growing up. In addition the researcher’s interest versus the Mediterranean wood species is rising respect to chemotaxonomy of woody plants respect to tropical woods. However, incomplete information on the green extraction techniques and on the potential use of extractives as value-added chemical products are up to now available to native wood species. The main goals of this research was: (i) to use water as solvents to extract secondary metabolites from some wood species (Cedrus deodara Roxb., Alnus cordata Desf., Qercus cerris L., Fagus sylvatica L., Castanea sativa Mill.); (ii) to analyze the extractives content and composition; (iii) to explore the efect of thermo vacuum process on the extractives content and composition.The composition of extractives was determined by solid phase microextraction (SPME) and gas chromatographic in combination with mass spectrometry technique (GC-MS). Interestingly, our results revealed a specie-specific efect in the quali-quantitative extractive composition and how the thermo vacuum pro - cess conditioned the chemical composition of extractive of wood species. Further inspection highlighted that the most representative extractive compounds belong to diferent class of chemical compounds and they can be used commonly employed in the biology and biotechnology industries, such as a flavoring agent in foods, pharmaceuticals products or in the perfume essences.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
