Ecological panels as an alternative for waste from mechanical processing of Amazonian species

The wood residues resulting from the operational phases in companies in the forestry market are normally considered by-products and, therefore, are discarded or reused for energy production, however, this material has a greater potential, such as the generation of new products through agglutination, which may generate a new segment in the wood industry, causing competition between products of native and planted species. This research aimed to develop agglomerated panels using residues of two tree species from the Amazon (Dinizia excelsa Ducke and Manilkara huberi (Ducke) Chevalier) and a mixture of commercial Amazonian species of high density, with the purpose of greater added value and a possible solution to reduce the negative environmental impacts of carbon emissions. The experimental design consisted of three treatments with five repetitions in each. Experimental panels were produced with a nominal density of 0.80 g/cm³, using castor oil-based resin with 10% percentages. The panels were pressed with a pressure of 10 MPa, temperature of 100ºC and with a pressing time of 10 minutes. The evaluations of the results obtained were compared with the ANSI A208.1 / 2009 standard and with the literature on agglomerated panels of tropical species. In physical properties, the panels showed compliance with the values found in the literature, however, they are outside the standard of the norm. Regarding the mechanical properties, the MOR values classify the panels in the medium to high density standard in accordance with the standard.  The results of the MOE are superior to those of the existing literature, with emphasis on the perpendicular traction that presents values consistent with the literature. The machining evaluations carried out according to ASTM D 1666-11 / 2011, show a good quality in the finish. In general analysis and in compliance with the regulations, all panels have economic viability and potential for industrialization

Sensory characteristics of wood from naturally fallen Amazonian trees for manufacture of products in Extractive Reserves

In view of the national and international demand for wood for industrial use, solutions are being created to combat and reduce deforestation. One such solution is to use wood from naturally fallen trees. However, there has been limited evaluation of the technological potential of this material. This study therefore aimed to assess the general characteristics of wood from naturally fallen tree species in the Auatí-Paraná Extractive Reserve (RESEX), for potential use in product development. The characteristics analyzed were color, texture, grain, heartwood, sapwood and density. The species of naturally fallen trees were assessed using online databases, specialized literature and the xylotheque at the Wood Anatomy and Identification Laboratory of the National Institute of Amazonian Research (LAIM/INPA). This study and its results confirm the great quantity and quality of wood from naturally fallen trees with technological potential for the development of products, based on the classification of the sensory characteristics of the woods

Evaluation of the quality of wood from naturally fallen trees in the central Amazon

The objective of this study was to assess the quality and potential of wood from naturally fallen trees in the forest for product development and to provide subsidies for the use of raw material. The inventory of fallen trees was carried out along the road from the Experimental Station of Tropical Silviculture of the National Institute for Research in the Amazon (EEST / INPA) - Nucleus ZF-2, at km 23 of the ZF-2 road that starts to the left of km 50 of Highway BR-174 (Manaus-Boa Vista).  Only trees that had fall characteristics due to natural factors, that is, that had exposed roots, were considered for the inventory. It was also stipulated as a requirement for measurement the diameter class of trees of 25 cm ≤ DBH ≤ 45 cm. From each naturally fallen tree, the diameters (largest and smallest) and their length were measured. 5cm thick discs were removed from the trees to obtain samples for scientific identification of the wood and determination of physical properties. Based on the inventory, it was identified that many of the trees naturally fallen in the forest are in good conditions of use, considering their woody material and their volume. The Alexa grandiflora species presented the highest volume with 2,788 m³ for a single tree, followed by the species Ormósia sp. with 2,287 m³ and Protium tenuifolium Engl with a volume of 1,269 m³. Regarding the health of the inventoried trees, all from the species Byrsonima crispaJuss. had no sign of degradation, followed by the species Croton lanjouwensis and Ingá sp. The most frequent class was medium density with 9 species with a variation of 0.47g/cm3 to 0.62g /cm3. Eperua schomburgkiana Benth was the most dense with 0.78g /cm3.The levels of degradation found and the intrinsic characteristics of the species did not compromise the possibilities of using this wooden product, and can represent an excellent opportunity for economic return, contributing to minimize the pressures exerted around the living forest

Ecodesign in the use of the Amazonian Peãozinho wood for making an eco-efficient product

In the midst of the current logging scenario and the growing concerns and actions in favor of preserving the environment, research related to the insertion of new tree species in the market and about the design of products with low environmental impact are of paramount importance for the development of forest management and product design activities. Thus, The holistic view, which includes everything from the extraction of the raw material to the final disposal of the product, guided this research in order to show the technological potential of the species Micrandopsis scleroxylon W. Rodr. through machining and validation processes by making an eco-efficient product. The methodology adopted was: survey of the demand, designing of the concept, definition of the function, generation and materialization of alternatives, tests and refinements and presentation of the final solution. The results obtained in the process of machining the wooden material of the species were excellent throughout the process. It is believed that the approach inherent to small diameter trees, for the benefit of forest management, provides the understanding that it is possible to make use of them in the manufacture of the most varied wooden artifacts. Contributing to further research on Little Known Species

Evaluation of the quality of wood from naturally fallen tree for the development of products in Design

The sustainable use of forest resources in the Amazon is one of the precautions attributed to Conservation Units of sustainable use, and among them, the RESEX Auati-Paraná stands out in this study. In this area, a large volume of naturally fallen trees of various species belonging to different diametric classes were inventoried, with a higher incidence of trees with small diameter. Therefore, it is important to highlight the potential use of this raw material for development high value-added products as a sustainable income generation opportunity for community members. Thus, the objective of this research was to assess the quality of naturally fallen species through the development of products with a fine finish through technical design projects. For this, was used, defining the types of products and species (Micrandropsis scleroxylon and Simarouba amara) for the study, characterizing them, surveying the cultural aspects of the RESEX, manufacture of physical products prototypes and analyzing the quality of the wood workability during machining processes. The results obtained through the design projects, demonstrated the quality and feasibility of using wood from naturally fallen trees for the manufacture of products, being able to be explored as a sustainable alternative to generate economic benefits to the community through the valorization of such natural resources of the Amazon rainforest

Viabilidade do uso de árvores ocas da espécie Astronium lecointei Ducke por meio da utilização da tecnologia da madeira e do design

Com a falta de tecnologia no setor florestal, alternativas são necessárias para favorecer a maximização do uso da madeira amazônica, principalmente àquelas que possuem características desfavoráveis para o seu processamento. Assim, o objetivo da pesquisa foi desenvolver o projeto de um produto com o design planejado, confeccionando-o e verificando as etapas de processamento para atestar o aumento do rendimento volumétrico e a diminuição dos resíduos de madeiras proveniente de árvores ocas. Com isso, foi projetado um móvel, utilizando softwares para modelar as alternativas de geometria e encaixe para uma mesa de jantar com seis lugares, com estrutura e formas diferenciada. Foram utilizados cerca de 0,1799 m³ de madeira da espécie de Muiracatiara para a confecção da mesa, possuindo acabamento fino e técnicas de marchetaria no tampo, com madeira de Marupá. A volumetria final do produto foi igual a 0,5420 m³, sendo o rendimento volumétrico de 30,13% considerado alto, para a quantidade de madeira utilizada no processo. Com o restante, cerca de 69,87% de resíduo madeireiro da produção da mesa, foi possível realizar a confecção de uma luminária, a partir de peças descartadas durante a usinagem da madeira. O estudo permitiu a demonstração da aplicabilidade do design no setor madeireiro a partir do planejamento do uso da matéria prima, onde foi possível verificar a viabilidade do procedimento utilizando madeira amazônica para a confecção de itens domésticos, independente do estado de qualidade, tornando a atividade sustentável ao setor.Palavras-chave: Madeira Amazônica, Tecnologia florestal, Rendimento Volumétrico, Design de produtos.

Residues of sapwood of "pau-rainha" (Brosimum rubescens): investigation of secondary metabolites and some technological aspects

Previous phytochemical studies on residues of pau-rainha\x92s heartwood (Brosimum rubescens) showed a high content of xanthyletin, a coumarin with biological potential. Continuing our studies with sawdust of this species, this work relates the basic density, isolation and identification of the triterpene 3β-acetoxy-olean-12-ene-28-al and β-sitosterol in n-hexane and MeOH extracts of the plant´s sapwood. The structure of the triterpene was determined on the basis of NMR spectra in 1D (¹H and 13C) and 2D (HSQC and HMBC) and comparison with literature data. The basic density found for sapwood was 0.58 g cm-3, that even so is inferior the one of heartwood, could be used in the confection of some products, also in marquetry techniques.Estudos fitoquímicos prévios com resíduos do cerne de pau-rainha (Brosimum rubescens), identificaram um alto teor de xantiletina, uma cumarina com potencial biológico. Dando prosseguimento aos estudos com serragens desta espécie, este estudo relata a densidade básica bem como o isolamento e identificação do triterpeno 3β-acetoxi-olean-12-eno-28-al e do β- sitosterol nos extratos hexânico e metanólico do alburno da planta. A estrutura do triterpeno foi determinada com base nos espectros de RMN em 1D (¹H e 13C) e 2D (HSQC e HMBC) além de comparação com dados da literatura. A densidade básica encontrada para o alburno foi de 0,58 g cm-3 que, embora seja inferior a do cerne, poderá ser utilizada na confecção de vários produtos, inclusive em técnicas de marchetaria

Identification of phenolic compounds and their relationship to the natural resistance of wood from Dipteryx polyphylla Huber and Acacia mangium Willd

Flavonoids are the phenolic compounds that are predominant in the Fabaceae family, and isoflavonoids are especially recognized for their contribution to the natural resistance of wood from species of this family. Herein, we investigated the phenolic compounds from extracts of wood residues from the Fabaceae species Dipteryx polyphylla Huber and Acacia mangium Willd. A phytochemical study of D. polyphylla led to isolation and identification of isoflavans such as 3’,7-dihydroxy-4\u27-methoxy-isoflavan (1), 2’,8-dihydroxy-4’,7-dimethoxy-isoflavan (2), 2’,7-dihydroxy-4’-methoxyisoflavan (3) and 3’,8-dihydroxy-4’,7-dimethoxy isoflavan (4). Compounds 1 and 4 are new findings. A. mangium gave monocyclic phenolics, such as ferulic acid (6), methylparaben (7) and 4-hydroxybenzaldehyde (8); flavonol melatoxetin (9) as well as fatty acid esters of spinasterol (5). The phenolic compounds that were identified contribute to the knowledge regarding the natural resistance of its woods, thus aggregating value for solid residues and plantation species recommended for reforestatio

Physical-mechanical characterization of Amazonian woods by non-destructive methodology for the manufacture of EGP (Edge Glued Panel) panels

Studies of the technological properties of little-known native species are essential for an indication of sustainable management of the Amazon. The study aimed to evaluate the physical-mechanical performance of five Amazonian species obtained from an area managed in the Amazon by a non-destructive methodology, and to indicate their use to manufacture EGP panels. The samples were obtained from non-flooded secondary forest in the Amazon/Brazil (EEST/INPA). Fifteen trees were selected to determine the physical-mechanical properties, using the microwave system to determine the moisture, the apparent density test and the dynamic modulus of elasticity (MOEd). The microwave system presents better drying performance when compared to the conventional method (artificial drying), considering that the dry woods in this system present greater stability in the equilibrium moisture, and the woods from Murici, Breu vermelho and Angelim pedra presented content close to 12%, ideal moisture for EGP manufactures. The apparent density of the woods varied from 0.76 to 1.18 g.cm-3, classified as high density, following the standards of tropical woods. The studied woods presented MOEd of 11,175 to 14,109 MPa, thus demonstrating good resistance, and lower risk of deformation for the different uses, including for EGP panels, whether structural or not, being necessary to consider the type of adhesive. The quality of the studied woods presents a promising result for industrial indication, since they are mostly unknown or non-commercial woods, where technological characterization is a key tool to assist in decision making in the forest management plans that may indicate the use of new species in the forestry sector

Use of NIR spectroscopy to monitor substrate biodegradation lignocellulosics by Pleurotus

Understand the process of biodegradation of lignocellulosic material as its chemical composition is key properties for enhancing the cultivation of edible mushrooms, which seek in lignin and other carbon source carbohydrates. The purpose of this study was to monitor polysaccharide and lignin degradation caused by Pleurotus ostreatoroseus on different agroindustrial substrates using near infrared spectroscopy (NIR). Sawdust substrates of Marupá and Cajuí wood, banana pseudostem fibers, enriched with bran of cereals were formulated (WB and MWB). Of the 12 formulations elaborated, eight were submitted to biodegradation of P. ostreatoroseus over a period of 49 days (Residual substrate), and four formulations maintained in natura (Initial substrates), where each treatment was formed by 10 replicates totaling n = 120. Spectra were obtained from the substrates before and after cultivation in FT-NIR system in the region between 10,000 and 4,000 cm-1 and the index degradation of lignocellulosic compounds was determined (LDI and PDI). Through Fourier transform near infrared spectroscopy was it is possible to observe the degradation of polysaccharides and lignin in the substrates grown with the fungus P. ostreatoroseus. In the residual substrate Marupá+WB-POSP was the highest lignin degradation index (LDI = 9.26%). While whereas for the PDI (Polysaccharide degradation index), the highest degradation (7.12%) was observed in the residual substrate Cajuí+MWB-POAM. Through analysis of the absorption bands, it was possible to observe the degradation of structures/bonds characteristics of lignocellulosic residues. The NIR model for degradation of lignocellulosic compounds was more effective in predicting “lignin degradation” in the spectral range 6,350-7,308 cm-