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2 edition of Chemical, morphological, and pulping studies on Gmelina arborea wood found in the catalog.

Chemical, morphological, and pulping studies on Gmelina arborea wood

Olumide Sosanwo

Chemical, morphological, and pulping studies on Gmelina arborea wood

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  • 28 Currently reading

Published by Dept. of Wood and Polymer Chemistry, University of Helsinki in Helsinki .
Written in English

  • Wood-pulp.,
  • Gmelina arborea.

  • Edition Notes

    Statementby Olumide Sosanwo.
    LC ClassificationsTS1176.4.T7 S67 1976
    The Physical Object
    Pagination39 p. ;
    Number of Pages39
    ID Numbers
    Open LibraryOL3037524M
    ISBN 109519907815
    LC Control Number82127522

      The study examined the anatomical characteristics of Gmelina arborea wood in respect to their age series such as fibre length, fibre diameter, lumen width and cell wall thickness were evaluated. The mean fibre length of the age series were mm, mm and mm 22 and 27 years respectively. Gmelina arborea leaves was of G. arborea leaves (GAL) werecollected and processed as fresh (T1), chopped (T2), sundried- (T3), air-dried (T4) and boiled-dried (T5). Samples were used for proximate, mineral and phytochemical analyses to determine the nutrient profile and anti-nutrient Size: KB. Gmelina arborea is a fast-growing tree, which grows on different localities and prefers moist fertile valleys with – mm rainfall. It does not thrive on ill-drained soils and remains stunted on dry, sandy or poor soils; drought also reduces it to a shrubby form.

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Chemical, morphological, and pulping studies on Gmelina arborea wood by Olumide Sosanwo Download PDF EPUB FB2

Chemical constituents from Gmelina arborea bark and their antioxidant activity Article in Journal of Wood Science 54(6) December with 1, Reads How we measure 'reads'. Olumide Sosanwo has written: 'Chemical, morphological, and pulping studies on Gmelina arborea wood' -- subject(s): Gmelina arborea, Wood-pulp Asked in Vitamins and Supplements.

Pulping of gamari roots (Gmelina arborea) chemical and morphological characteristics and its pulping. In this paper, gamari wood roots are characterized physically, chemically and. Soil and site characteristics of Gmelina arborea plantation located in a basement complex zone of Omo Forest Reserve in southwestern Nigeria were studied.

Soil description, site characteristics and stand growth were recorded in the field. Samples from soil genetic horizons were analysed in the laboratory for physical and chemical : E.O. Chijioke. Gmelina arborea, (in English beechwood, gmelina, goomar teak, Kashmir tree, Malay beechwood, white teak, yemane), locally known as gamhar, is a fast-growing deciduous tree, occurring naturally throughout greater part of India at altitudes up to 1, meters.

It also occurs naturally in Myanmar, Thailand, Laos, Cambodia, Vietnam, and in southern provinces of : Tracheophytes. Olumide Sosanwo has written: 'Chemical, morphological, and pulping studies on Gmelina arborea wood' -- subject(s): Gmelina arborea, Wood-pulp. Define gmelina.

gmelina synonyms, gmelina pronunciation, gmelina translation, English dictionary definition of gmelina. (Gmelina arborea) in the mint family, having large leaves, brownish-yellow flowers, and yellow fruit, and widely grown for timber and pulp.

Single-species pulping: the world's preferred market pulps; 'outstanding. In Vitro studies on bark and fruit The heart wood bark of Gmelina arborea was collected in the month of Sept – October from the tribal area of Article ISSN – X International Journal of Pharmaceutical Sciences Review and Research Page Available online at With pulping properties superior to most hardwood pulps, gmelina has been planted by the millions, e.g.

in the Rio Jari region of Brazil to feed a MT/day kraft pulp mill. In Gambia there are dual purpose plantings, for firewood and for honey. Gmelina arborea is an important timber-yielding tree that grows naturally in the tropical and subtropical regions of Southeast Asia and has also been introduced as a plantation species outside these regions.

Genetic diversity in this tree species was observed in stone/seed-related traits and in vitro responses of cultured nodal segments from plants of eight different Cited by: Biomass 19 () Gross Heat of Combustion of Gmelina (Gmelina arborea (Roxb)) Chemical Components Joseph A.

Fuwape School of Agriculture and Agricultural Technology, Federal University of Technology, PMBAkure, Nigeria (Received 22 July ; revised version received 24 January ; accepted 2 February ) ABSTRACT The gross heat of Cited by: 9.

Okojie JA, Choosing appropriate volume equations for Gmelina arborea Linn. For two plantation sites in Nigeria. Nigerian Journal of Forestry, 6(1/2) Okoroigwe E, Li ZL, Stuecken T, Saffron C, Onyegegbu S, Pyrolysis of Gmelina arborea wood for bio-oil/bio-char production: physical and chemical characterisation of products.

Abstract. Gmelina arborea (Family: Verbenaceae) is considered as a useful multi-purpose species. The wood of Gmelina is used as raw material for cellulose, and it has received attention as a source of good quality pulp, medium density fiberboard and plywood because of its beautiful white color and stronger fiber.

The aim of this study was to determine the fiber Author: J. Soosai Raj, A. Mayavel, V. Mutharaian, A. Nicodemus. Gmelina arborea is not considered to be threatened, and can be found growing in the wild in many countries, as well as in large numbers in plantations.

Uses Gamhar produces high-quality wood, which is harvested for the manufacture of furniture and musical instruments. Specific gravity of wood-Wood-specific gravity is a variable factor within Gmelina arborea trees (Esan, ; Akachukwu, ).

Wood samples measuring 5 cm in length were collected from the second internode from the plant base. Specific gravity of the wood sample was mea-sured as the ratio of the oven-dry weight to its original green volume. The chemical composition and fibre morphology of Nigerian-grown G.

arborea and B. vulgaris, together with their pulping properties indicate that both biomasses are suitable materials for chemical pulping. Since the cooking conditions and the composition of gmelina and bamboo pulps are fairly similar, a co-cooking of both samples can be a Cited by: 2.

Gmelina arborea Roxb. (Verbenaceae), popularly known as Shivan, is an important medicinal plant in the Indian Ayurvedic system of medicine. The drupes, leaves, flowers, roots, and bark are used in traditional medicine. The plant is used in snake-bite and scorpion sting. The juice of tender leaves added to cow's milk is used in gonorrhea.

“The effect of service age on various chemical properties of Scots pine and Crimean juniper wood used indoor constructions,” Wood Res. 49(4), Tutus, A., Ezici, A. C., and Ates, S. “Chemical, morphological and anatomical properties and evaluation of cotton stalks (Gossypium hirsutum L.) in pulp industry,” Scientific.

Moya R, Tomazello M, Variation in the wood anatomical structure of Gmelina arborea (Verbenaceae) trees at different ecological conditions in Costa Rica.

Rev Biol Trop 56 (2): Moya R, Muñoz F, Dragica J, Berrocal A, Visual identification, physical properties, ash composition and water diffusion of wetwood in Gmelina by: 2.

More than 60 Gmelina arborea provenance trials were established in the mid-seventies as a joint effort between 20 countries, mainly outside the natural distribution areas of gmelina.

Results from 27 of these trials are presented in this article focusing on differences between seed sources in growth rate, bole quality and wood density. Gmelina arborea Roxb. Description 1,2,3 Gmelina arborea Roxb. is an unarmed, moderately sized to large deciduous tree, about 30m or more in height and a diameter of up to m.

The genus was named after 18 th century German botanist J.C. Gmelin. The name arborea means tree-like, derived from the Latin word ‘arbor’ means tree. The densities of Gmelina arborea and Leucaena Leucocephala were kg/m 3 and kg/m 3 respectively.

Modulus of Rupture (MOR) The mean values for MOR ranged from N/mm 2 to N/mm for Gmelina arborea and N/mm 2 to N/mm 2 for Leucaena Leucocephala. Wood density has effect on the reactions of boards to bending test.

Three studies involving chemical analysis, in vitro and in vivo digestibility trials, and feeding trial to evaluate the feeding value of Gmelina (Gmelina arborea Roxb.) leaves and fruits of their mixture for sheep were conducted.

Samples were analyzed for proximate components, calcium and phosphorus contents, detergent fiber components and for Author: C.C. Sevilla, S.M. Meriales. ~ ~ Journal of Pharmacognosy and Phytochemistry Fig 1: Gmelina arborea Roxb. Flower Fig 2: Gmelina arborea (Drupes) Fig 3: Gmelina arborea 8.

Part Used - Root, bark, leaf, flower, and fruit [1]. Rasa Panchaka Rasa panchaka of different parts of Gambhari according to various Nighantus are enlisted in the Tables (Table 4, 5)Cited by: 2. The studies were duplicated for Gmelina arborea, which is already in use as pulp and paper-making hardwood, for comparison.

two phases: the microscopic characteristics of the wood followed by pulping trial and testing of hand-made paper sheets. In this work, therefore, microscopic wood structure of. Gmelina L. – gmelina Species: Gmelina arborea Roxb.

– gumhar Subordinate Taxa. This plant has no children Legal Status. Wetland Status. Interpreting Wetland Status. Related Links. More Accounts and Images; ARS Germplasm Resources Information Network (GMAR) Integrated Taxonomic Information System (GMAR). The timber types under investigation; Gmelina arborea (White teak, Melina), Parkia biglobosa (African locust beans) and Prosopis africana (African mesquite, iron wood) are found in West Africa with their common names in parentheses [8].

They are fast growing trees which almost grows very well everywhere on Nigerian soil. Scaling up of Ghamar (Gmelina arborea Roxb.) based agroforestry in India has a prime concern as it is a native species which has potential to replace and act as a substitute for other exotic timber trees in the country.

Gmelina is gaining momentum at the present time; besides fulfilling the demand of wood and timber in the current scenario of industrial agroforestry and also Cited by: 1.

Effect of chemical priming treatments on seed quality traits of Gmelina arborea as shown in Table 2 revealed that seeds treated with 20% PEG, 1% KH 2 PO 4, and % KH 2 PO 4 had the similar higher seed germination values ofandrespectively while seeds treated with 4% KCl had the lowest germination percentage of %.

A stem analysis was perform to examines the effects of thinning treatments on Melina (Gmelina arborea) wood quality and tree architecture in the North Coast of Colombia. 27 plots under forest management regimes and age classes were evaluated.

Split-plot experimental design, stepwise regression and ANOVA were developed to analyze the data. ABSTRACT ESPINOZA, JESÚS ALBERTO. Genetic Variation in Wood Density of Gmelina arborea planted on different sites in Western Venezuela.

(Under the direction of William S. Dvorak.) Variation in wood specific gravity from the base to. height), 30, 50, 70 and 90% heights of the clear bole. From each disc, wood samples measuring 5 x 5 x cm were taken at 10, 30, 50, 70 and 90% away from the pith for basic density determination using standard method.

As for the anatomical studies, microslides were prepared from samples of about 1. Gmelina arborea is aflowering plant that belongs to functional group assay of the wood were investigated.

the Verbanaceae Family. It is a hardwood with gmelina as its common name. MATERIALS AND METHODS In Nigeria, its Igbo name is gmelina, igi-melina in Yoruba and kalankuwa in Hausa [1, 2]. It is a white teak vemareSample Collection and. The Effects of Wood Storage on the Chemical Composition and Indigenous Microflora of Eucalyptus species Used in the Pulping Industry Lucretia Ramnath,a b,cBruce Sithole, and Roshini Govinden a* Lipophilic extractives naturally occurring in wood tend to coalesce during pulping to form pitch deposits, which have particularly undesirable effectsFile Size: KB.

Keywords: Eucalyptus species, Fibre dimensions, Chemical analysis, Pulping, Strength properties The effect of fibre properties on paper strength lead to the general belief that paper with desirable strength properties can only be made from long-fibered wood species, i.e.

Pulping of gamari roots (Gmelina arborea). Effect of Different Locations on the Morphological, Chemical, Pulping and papermaking Properties of Trema orientalis (Nalita).

Bioresource Technology–, Studies on pulping of whole kenaf plant. Gmelina arborea, Adansonia digitata, Ficus mucuso, Lophira lanceolata etc. in the wild without any bait placement or inclusion. This specialization has reflected in efficient stable colonization, high fecundity and appreciable yield of modern beekeeping using Gmelina arborea wood [8].


Nwoboshi 1 Forestry Research Institute of Ghana UST P.O. Kumasi, Ghana ABSTRACT - Subri conversion technique is a new site preparation technique in West Africa in which the degraded natural forests are cleared, and lines.

AbstractThe aim of the present study was to investigate the extractives of Gmelina arborea stem from the sapwood (sW) to heartwood (hW) including the transition zone (tZ) between them by means of quantitative GC-MS, while the spatial distribution of four typical compounds was analysed by TOF-SIMS.

The focus was on gmelinol, paulownin, 7′-O-ethyl Cited by: 7. Samples were tested from bark, sapwood, heartwood, terminal branch, and leaves of 7-yr-old trees. Gross heat of combustion for holocellulose, α-cellulose, lignin and extractives were 191925 and 25 kJ/kg, respectively.

Bark and leaves with relatively high proportions of lignin and extractives had the highest heat of combustion on a dry, ash-free by: 9. For products from plantations of Gmelina and Nauclea to meet the timber size requirements of sawmills in south-western Nigeria, thinning is inevitable.

While the low crown ratios revealed the necessity and urgency for thinning in the stands, other results of growth characteristics suggested that both species would react positively to thinning by way of increased diameter at breast Cited by: Assessment of the Calorific Value of Charcoalfrom Gmelina Arborea (Roxb), Tectona Grandis (Linn) and (Bentham) By Emerhi, E.

A. Delta State University, Nigeria. Abstract- This study was carried out to determine the calorific values of charcoal produced from the wood of. Gmelina arborea, Tectona. grandis andFile Size: KB.Gmelina arborea Seedlings.

Gmelina arborea Saplings. Plant Protection: Squirrels pick up and eat seeds after sowing. In first two years browsing and girdling by deer is prevented by fencing.

Uses: Wood is yellowish or grayish white, even-grained, soft-light and strong, seasons well without warping and cracking and is very useful in paneling.