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  • Open Access


    Matrix Assisted Laser Desorption Ionization Time of Flight (MALDI-TOF)-Mass Spectrometry and 13C-NMR-Identified New Compounds in Paraberlinia bifoliolata (Ekop-Beli) Bark Tannins

    Liliane Nga1, Benoit Ndiwe1,2, Achille Bernard Biwolé1, Antonio Pizzi3,*, Jean Jalin Eyinga Biwole1, Joseph Zobo Mfomo1

    Journal of Renewable Materials, Vol.12, No.3, pp. 553-568, 2024, DOI:10.32604/jrm.2023.046568

    Abstract Extracts of plant origin, particularly tannins, are attracting growing interest for the sustainable development of materials in the industrial sector. The discovery of new tannins is therefore necessary. The aim of this work was to contribute to the understanding of the properties of Paraberlinia bifoliolata tannin by Matrix Assisted Laser Desorption Ionization Time of Flight Mass Spectroscopy MALDI-TOF/MS and Carbon 13 Nuclear Magnetic Resonance (13C NMR). The chemical composition of tannin extracted from Paraberlinia bifoliolata bark was determined, as was the mechanical strength of the resin hardened with Acacia nilotica extracts. Yield by successive water extraction was 35%. MALDI-TOF/MS… More >

  • Open Access


    Classification of Principal Wood Species in China Based on the Physiomechanical Properties

    Jianyi Zhu1, Hui Peng1,2, Xiaoning Lu1,2, Jianxiong Lyu1,2,3, Tianyi Zhan1,2,*

    Journal of Renewable Materials, Vol.11, No.3, pp. 1425-1437, 2023, DOI:10.32604/jrm.2022.023464

    Abstract Many tree species are planted in China with variable properties and usage. Toward exploring the structure-properties relationships of wood and classifying the species more reasonably, the physiomechanical properties of the domestic wood species in China were analyzed statistically. According to the correlation analysis, the mechanical properties were closely related to the wood density. Except impact toughness and cleavage strength, the correlation coefficients between mechanical properties and densities were more than 0.8. However, shrinkage properties showed fewer correlations with densities, and the coefficient was no more than 0.7. Primary component analysis was proved to be feasible… More >

  • Open Access


    An Investigation on the Visible Characteristics of Four Caesalpiniaceae Wood Species in Gabon

    Zhaoyang Yu1, Jinbo Hu1,2,*, Yuan Liu1,*, Shanshan Chang1, Ting Li2, Gonggang Liu1, Qiongtao Huang3, Jianying Yuan4

    Journal of Renewable Materials, Vol.10, No.5, pp. 1365-1379, 2022, DOI:10.32604/jrm.2022.018255

    Abstract Color, whiteness and glossiness of four caesalpiniaceae wood species were characterized by quantitative measurements and image analysis, i.e., which were respectively Berlinia bracteosa Benth., Monopetalanthus heitzii Pellegr., Distemonanthus benthamianus and Erythrophleum ivorense A. Chev. The color of four wood species was evaluated to be consistent by the CIELab and CIE1931 color system. The boards of B. bracteosa, M. heitzii and E. ivorense was divided into dark color. The wood color of B. bracteosa had the highest red to green hue, while the wood appearance of D. benthamianus had the brightest and yellowest color within the four wood species. The whiteness of D. benthamianus was significantly… More > Graphic Abstract

    An Investigation on the Visible Characteristics of Four Caesalpiniaceae Wood Species in Gabon

  • Open Access


    Physical, Anatomical, and Photochemical Analyses of Some Exotic Wood Species Submitted to Heat Treatment

    Alper Aytekin1,*, Hikmet Yazıcı2

    Journal of Renewable Materials, Vol.9, No.8, pp. 1485-1501, 2021, DOI:10.32604/jrm.2021.015768

    Abstract The objective of this study was to evaluate the effect of heat treatment on decorative properties including glossiness, color coordinates including lightness (L), blue-yellow (b*) and red-green (a*), hardness (shore-D) morphological characterization and thermal properties of some exotic wood species. Heat treatment of anigre (Aningeria altissima), cedrorana (Cedrelinga catenaeformis), cemara (Casuarina sumatrana) and coronilla (Scutia buxifolia) wood materials were performed in an oven with a programmable controller at 210°C for 3 h. The obtained samples were conditioned in a climate cabin and the decorative properties, morphological characterization with scanning electron microscopy (SEM) and thermal properties with thermogravimetric analyzer (TGA)… More > Graphic Abstract

    Physical, Anatomical, and Photochemical Analyses of Some Exotic Wood Species Submitted to Heat Treatment

  • Open Access


    Biomolecules of Interest Present in the Main Industrial Wood Species Used in Indonesia-A Review

    Resa Martha1,2, Mahdi Mubarok1,2, Wayan Darmawan2, Wasrin Syafii2, Stéphane Dumarcay1, Christine Gérardin Charbonnier1, Philippe Gérardin1,*

    Journal of Renewable Materials, Vol.9, No.3, pp. 399-449, 2021, DOI:10.32604/jrm.2021.014286

    Abstract As a tropical archipelagic country, Indonesia’s forests possess high biodiversity, including its wide variety of wood species. Valorisation of biomolecules released from woody plant extracts has been gaining attractive interests since in the middle of 20th century. This paper focuses on a literature review of the potential valorisation of biomolecules released from twenty wood species exploited in Indonesia. It has revealed that depending on the natural origin of the wood species studied and harmonized with the ethnobotanical and ethnomedicinal knowledge, the extractives derived from the woody plants have given valuable heritages in the fields of More >

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