Radial variations of wood different properties in Diospyros lotus

Abstract

Aim of study: The aim of this study was to determine some of the physical, biometry and mechanical strength properties of Diospyros lotus L. wood along radial direction from the pith to the bark and the relationship between wood various properties.Area of study: The study area is located in north Iran in the province of Mazandarn. Material and methods:Testing samples were taken at breast height of tree stem and three radial position of stem radius to determine physical (basic density), fiber biometry (fiber length, fiber diameter, cell-wall thickness) and mechanical properties (modulus of rupture and modulus of elasticity).Main results: The results of ANOVA indicated that there are significant differences along radial direction in above mentioned properties for persimmon wood. Basic density, fiber length, fiber diameter, cell-wall thickness, modulus of elasticity and modulus of rupture increased along radial direction from pith toward the bark.Research highlights: The persimmon wood isn't suitable for pulp and paper production due to the unfavorable flexibility and Runkel coefficients.

Chemical constituents and medical function of leaves of Diospyros lotus L.

“…Furthermore, it has been used as herb tea and the treatment of hypertension in patients for long time in Korea [19][20][21]. However, many researches focused on the fruits and timer, little studies have been done for comprehensive use of the persimmon leaves [22][23][24]. The objective of the present study was to investigate the constituents of the leaves extracts of Diospyros lotus L. by FT-IR, GC-MS, and MTT analysis.…”

Evaluation of Selected Physical Properties of Blighia sapida K. Koenig Wood

“…As free water is removed from the cell lumen till the point it reaches the bound water in the cell wall, which is the fibre saturation point and beyond, the cells tend to move closer and become compacted. The movement in the tangential and radial directions is several times greater than in the longitudinal direction [31] and that tends to make shrinkage more prominent than in the longitudinal direction.…”

“…The analysis of variance at a 95% confidence level revealed that there is a significant difference among the sampled trees, the axial direction as well as the radial positions in wood. The increase in density from the innerwood to the outerwood may have been a result of an increase in the age of the cambium (tree age) [12] [25] [31].…”

Molecules and medical function of Diospyros lotus L.

“…The timber of Diospyros lotus L. is rare dark wood and used as fine furniture and stationery for beautiful texture and color. The timber chemical properties are an important aspect for wood properties and utilization [18,19]. Some of these ingredients are important raw materials for many sectors such as chemical industry, medicine and light chemical industry, and have certain economic value [20].…”