Chemical evaluation of two tropical wood species for use as grilling planks

This research evaluated the possible use of tropical hardwood species (Myrocarpus frondosus and Ocotea porosa) for grilling plank production. Physical, chemical, and organoleptic properties were evaluated and compared with properties of a well-used wood species for grilling planks, western red cedar (Thuja plicata). For chemical analysis, one technique was used: hydrodistillation. Normality tests and analyses of variance (ANOVA) were used for the comparisons between Thuja plicata and tropical hardwoods. The results of the organoleptic, chemical, and statistical analyses demonstrated the possibility of using Myrocarpus frondosus and Ocotea porosa in grilling plank production.

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THE BEHAVIOUR OF FIVE WOOD SPECIES IN COMPRESSION

IAWA Journal ◽

10.1163/22941932-90000298 ◽

2002 ◽

Vol 23 (2) ◽

pp. 201-211 ◽

Cited By ~ 11

Author(s):

Simon Ellis ◽

Paul Steiner

Keyword(s):

Young’S Modulus ◽

Populus Tremuloides ◽

Wood Species ◽

Young's Modulus ◽

Douglas Fir ◽

Thuja Plicata ◽

Trembling Aspen ◽

Moisture Contents ◽

Red Cedar ◽

Western Red Cedar

Five wood species, Oregon ash (Fraxinus latifolia Benth.), Balau (Shorea spp.), Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), Western red cedar (Thuja plicata Donn ex D. Don), and Trembling aspen (Populus tremuloides Michx.) were loaded in compression longitudinally, radially and tangentially. The wood cubes were conditioned to one of four moisture contents prior to loading. Small cubes were loaded until no void space remained after which samples were released and soaked in water. Stress /strain curves were recorded over the whole range of strain and cube thicknesses were recorded at the end of the compression, after release from the testing apparatus, and after soaking in water. Denser woods resulted in a greater Young’s modulus, higher levels of stress and shorter time to densification than did less dense woods. Higher initial moisture contents apparently increased the plasticity of the wood leading to a lower Young’s modulus and lower levels of stress during compression, greater springback after release of stress and greater recovery after swelling in water. Differences observed in the radial and tangential behaviours were believed to be due to the supporting action of the rays when the wood was compressed in the radial direction in balau and trembling aspen and to the relative difference between the lower density earlywood and higher density latewood regions in ash, Douglas-fir and western red cedar.

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Relationship Between Wood Colour of Seven Tropical Hardwood Species and Formaldehyde Emission of Plywood

International Journal of Recent Technology and Engineering - 2 ◽

10.35940/ijrte.b11020782s419 ◽

2019 ◽

Vol 8 (2S4) ◽

pp. 520-523

Keyword(s):

Moisture Content ◽

Wood Species ◽

Urea Formaldehyde ◽

Formaldehyde Emission ◽

Extractive Content ◽

Tropical Wood ◽

Wood Colour ◽

Tropical Hardwood ◽

Hardwood Species ◽

Colour Appearance

There are many factors that affect the formaldehyde emission from plywood such as wood species and moisture content. As for wood species, colour appearance was found to affect significantly the formaldehyde emission. Therefore, the effects of tropical wood species with different colour on the formaldehyde emission of manufactured plywood were studied and determined by the perforator and desiccator method. Veneer of seven wood species, namely Mempisang, Kedondong, Penarahan, Keledang, Rengas, Melembu and Ludai were chosen as samples. 3-ply plywood were manufactured using urea formaldehyde as binders. The formaldehyde emission of the produced plywood was tested using perforator method (EN 120) and desiccator method (MS 1787: Part 15). Colour of the wood veneers were measured using Brightness & Colour Meter through CIE L*a*b* system. Relationship between the wood colour and formaldehyde emission were determined. The results revealed that the formaldehyde emission increased as the lightness (L*) of the wood samples increased. This may be due to higher extractive content in darker coloured wood (low lightness) that acts as formaldehyde scavenger.

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PHYSICAL, CHEMICAL AND ORGANOLEPTIC PROPERTIES OF SAPODILLA (Achras zapota L.) JAM BASED ON PECTIN AND SUCROSE ADDITION

Jurnal Agroindustri ◽

10.31186/j.agroind.6.2.88-100 ◽

2016 ◽

Vol 6 (2) ◽

pp. 88-100 ◽

Cited By ~ 1

Author(s):

Yogi Harto ◽

Yessy Rosalina ◽

Laili Susanti

Keyword(s):

Experimental Data ◽

Chemical Analysis ◽

Factorial Design ◽

Sweet Taste ◽

Total Dissolved Solids ◽

Organoleptic Properties ◽

Dissolved Solids ◽

Physical Chemical ◽

Red Color ◽

Acceptance Score

This study was carried out to investigate the effect of sucrose and pectin on physical, chemical and organoleptic properties of sapodilla jam and to determine the best treatment in accordance with SNI. The evaluation consisted of a 2 X 3 factorial design with three replicates, two Pectin concentrations (0.5%, 0.7%) and three sugar concentrations (35%, 45%, 55%). Experimental data were subjected to ANOVA test followed by Tukey's test 5%. The results showed the proportion of pectin and sugar have significantly different impact on color, aroma, taste, a smear of jam and overall consumers acceptance on sapodilla jam. Results of chemical analysis and physical use of pectin have significantly different impact on total dissolved solids (TDS), but has no effect on pH and a smear of jam. The use of sugar affect the TDS and a smear of jam but pH did not differsignificantly. The interaction between pectin and sugar have significantly different impact on a smear of jam but has no effect on pH and TDS. The best product is the use of pectin 0.5% and sugar 55% , brownish-red color (4.20), sweet taste (4,07). aroma is quite flavorful distinctive sapodilla fruit (2.83), smooth texture and easily applied evenly (4.57). The overall consumers acceptance score (4.57). TDS (94.77%), pH (4.4) and fruit fiber positive (+).

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PHYSICAL-CHEMICAL AND ORGANOLEPTIC PROPERTIES OF TABLE AND DESSERT WINE MATERIALS FROM NEW VARIETIES AND CLONES OF GRAPES

Scientific Works of North Caucasian Federal Scientific Center of Horticulture Viticulture Wine-making ◽

10.30679/2587-9847-2019-25-190-195 ◽

2019 ◽

Vol 25 ◽

pp. 190-195

Author(s):

E.N. Yakimenko ◽

◽

N.M. Ageyeva ◽

D.V. Dergachev ◽

M.D. Larkina ◽

...

Keyword(s):

Organoleptic Properties ◽

Physical Chemical ◽

New Varieties

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SIPNs polymeric scaffold for use in cartilaginous tissue engineering: physical-chemical evaluation and biological behavior

Materials Today Communications ◽

10.1016/j.mtcomm.2021.102111 ◽

2021 ◽

Vol 26 ◽

pp. 102111

Author(s):

Elcio Malcher Dias Junior ◽

Dayane dos Reis Costa Dias ◽

Ana Paula Drummond Rodrigues ◽

Carmen Gilda Barroso Tavares Dias ◽

Gilmara de Nazareth Tavares Bastos ◽

...

Keyword(s):

Tissue Engineering ◽

Biological Behavior ◽

Cartilaginous Tissue ◽

Chemical Evaluation ◽

Polymeric Scaffold ◽

Physical Chemical

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Characterization of the complete plastome of western red cedar, Thuja plicata (Cupressaceae)

Conservation Genetics Resources ◽

10.1007/s12686-017-0948-1 ◽

2017 ◽

Vol 11 (1) ◽

pp. 79-81

Author(s):

Kole F. Adelalu ◽

Xiao-Jian Qu ◽

Yan-Xia Sun ◽

Tao Deng ◽

Hang Sun ◽

...

Keyword(s):

Thuja Plicata ◽

Red Cedar ◽

Western Red Cedar

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Lignans of western red cedar (Thuja plicata Donn). VI. Dihydroxythujaplicatin methyl ether

Canadian Journal of Chemistry ◽

10.1139/v67-054 ◽

1967 ◽

Vol 45 (3) ◽

pp. 305-309 ◽

Cited By ~ 5

Author(s):

Harold MacLean ◽

Koji Murakami

Keyword(s):

Nuclear Magnetic Resonance ◽

Magnetic Resonance ◽

Methyl Ether ◽

Degradation Products ◽

Parent Compound ◽

Thuja Plicata ◽

Red Cedar ◽

Magnetic Resonance Data ◽

Resonance Data ◽

Thuja Plicata Donn

Proof of structure is presented for another lignan of the thujaplicatin series, 2,3-dihydroxy-2-(4″-hydroxy-3″,5″-dimethoxybenzyl)-3-(4′-hydroxy-3′-methoxybenzyl)-butyrolactone (I) (dihydroxythujaplicatin methyl ether). Analytical and spectral (ultraviolet, infrared, and nuclear magnetic resonance) data on derivatives and degradation products, in addition to the parent compound, are presented.

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