Estudio De La Velocidad Del Secado De Renovales De Canelo Drimys Winteri

Perez, Patricio; Ananías, Rubén A.; Hernández, G.

doi:10.4067/s0718-221x2005000200004

Cited by 5 publications

(3 citation statements)

References 7 publications

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“…La calidad del secado fue evaluada a través de: heterogeneidad de la humedad fi nal, gradiente de humedad, tensiones de secado y colapso, usando las estandarizaciones europeas según tablas 2 y 3 (Welling 1994;Pérez et al 2007). La humedad de la madera durante el secado fue determinada mediante pesadas de muestras testigos.…”

Section: Metodologiaunclassified

Estudio Experimental Del Secado a Temperaturas Convencionales De Acacias

Ananías¹,

Salvo²,

Estrada³

et al. 2008

Maderas, Cienc. tecnol.

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RESUMENEntre las especies del género Acacias, la Acacia melanoxylon o aromo australiano y la Acacia dealbata o aromo chileno, son dos especies aclimatadas en Chile con un interesante potencial industrial. En este trabajo, se estudian programas de secado a temperaturas convencionales y la calidad de la madera seca de A. melanoxylon y A. dealbata.Experimentalmente son realizados 8 ensayos de secado a temperaturas convencionales, usando un horno de secado convectivo de 0.3 m 3 de capacidad. El diseño experimental incluye como factores variables la especie (A. melanoxylon y A. dealbata), el espesor de la madera (25 y 50 mm) y el tipo de corte (tangencial y radial).Los resultados indican que para 25 o 50 mm de espesor, la A. melanoxylon y la A. dealbata, en corte radial y tangencial se dejan secar satisfactoriamente bajo un mismo programa de temperaturas convencionales. La calidad de la madera seca se ve favorecida por la carencia de colapso y la baja anisotropía de la contracción transversal.Palabras clave: calidad de secado, contracción, Acacia melanoxylon, Acacia dealbata. ABSTRACTAcacia melanoxylon and Acacia dealbata are two Australian species well acclimated in Chile, both wood species with an interesting industrial potential. In this work, has been studied kiln drying runs and the wood drying quality of the sawn wood of Acacia melanoxylon and Acacia dealbata during kiln drying at conventional temperatures.Eight tests of kiln drying to conventional temperatures are made, using a convective drying of 0,3 m 3 of capacity. The experimental design includes as variable the species (A. melanoxylon an A. dealbata), the wood thickness (25 and 50 mm) and the cut-type (fl atsawn-wood and quartersawn-wood). The wood drying quality on the basis of European and Chilean standards is evaluated.The results show that for a same thickness, both species A. melanoxylon and A. dealbata, in fl atsawn

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Section: Metodologiaunclassified

Estudio Experimental Del Secado a Temperaturas Convencionales De Acacias

Ananías¹,

Salvo²,

Estrada³

et al. 2008

Maderas, Cienc. tecnol.

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“…It is found throughout Latin America, especially in Brazil, Argentina, and Chile. In the latter, Canelo covers roughly 230 thousand hectares of forest in the southern part of the nation, particularly in the Los Lagos region ( Perez et al, 2007 ; Russo et al, 2019 ). Between six and eight species from Central and South America make up the genus Drimys, which is found from Cape Horn to Mexico ( Molina et al, 2016 ).…”

Section: Introductionmentioning

confidence: 99%

Biological activity of the essential oil of Drimys winteri

Navarro,

Urrejola,

Espinoza

et al. 2024

Front. Chem.

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In the Chilean indigenous culture, the tree Drimys winteri (Winteraceae) Canelo is of great importance and is considered the sacred Mapuche tree. It has antibacterial and disinfectant properties and is used in the treatment of various diseases, such as fevers, ulcers, cancers, and respiratory tract problems. The essential oil obtained from D. winteri, DW_EO, is bioactive, possesses insecticidal and repellent properties against pests, and shows activity toward plant growth regulators. It also has a phytotoxic effect against the growth and germination of weeds. The essential oil obtained from the leaves and bark of Drimys winteri has demonstrated antifungal, immunomodulatory, anti-inflammatory, and anticancer properties in in vitro and in vivo studies. It also possesses antioxidant activity and antibacterial effects. The essential oil contains monoterpenes such as zafrol, pinenes, and linalool, among others, that contribute to its bioactivity. The DW_EO and bioactive compounds have great potential in various applications in medicine, industrial food, sanitizer, and other areas.

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“…D. winteri J.R. et G. Forst, commonly called Canelo, is a native tree that is distributed in Latin America, from Brazil to Argentina and Chile (Perez et al, 2007;Russo et al, 2019). In Chile, it is a sacred tree of great social significance for the Mapuche culture, also used as a medicinal plant (Muñoz-Concha et al, 2004;Monsálvez et al, 2010;Neira Ceballos et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

The essential oil from Drimys winteri possess activity: Antioxidant, theoretical chemistry reactivity, antimicrobial, antiproliferative and chemical composition

Bruna

Fernández²,

Urrejola³

et al. 2022

Front. Nat. Prod.

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The Mapuche and their ancestors have used D. winteri in traditional medicine. In the present study, the essential oil extract of D. winteri leaves (DW_EO) were characterized chemically and biologically to evaluate its pharmacological activity. In vitro antioxidant activity was assayed, and antitumor activity was evaluated in non-tumor and tumor-cell culture lines. Caenorhabditis elegans was used as a model to evaluate toxicity, and the chemical composition of the essential oil was analyzed by gas chromatography-mass spectrometry. The chemical oil composition was characterized principally of five major terpenes: 4 sesquiterpenes γ-Eudesmol (39.7%), β-Caryophyllene (33.7%), Elemol (25.9%), α-Eudesmol (0.3%) and 1 diterpene Kaunene (0.4%). By quantum calculations, it was determined that all oils have the ability to capture and yield electrons, which is consistent with the moderate antioxidant activity of DW_EO detected in vitro. Furthermore, by molecular docking is estimated that these oils can bind to proteins involved in the production of oxygen radicals. Of these proteins, CYP2C9 could bind energetically, reaching binding energy between −6.8 and −9.2 kCal/mol for the 5 terpenes studied, highlighting among these β-Caryophyllen and γ-Eudesmol. DW_EO has effect against H. pylori (MIC 32 μg/ml), S. aureus (MIC 8 μg/ml), E. coli (MIC 32 μg/ml) and C. albicans (MIC 64 μg/ml), β-Caryophyllen and γ -Eudesmol (MIC 64 μg/ml) and could selectively inhibit the proliferation of epithelial tumor cell lines but showed low against C. elegans (0.39–1.56 μg mL−1). Therefore, DW_EO may be used as a source of bioactive compounds in novel pharmacological treatments for medical application, agronomics, sanitation, and food.

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Estudio De La Velocidad Del Secado De Renovales De Canelo Drimys Winteri

Cited by 5 publications

References 7 publications

Estudio Experimental Del Secado a Temperaturas Convencionales De Acacias

Estudio Experimental Del Secado a Temperaturas Convencionales De Acacias

Biological activity of the essential oil of Drimys winteri

The essential oil from Drimys winteri possess activity: Antioxidant, theoretical chemistry reactivity, antimicrobial, antiproliferative and chemical composition

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