Vol.08. Nos.3 - 4 (2009) pp.175-186
Title:

Parameters affecting palasan cane (Calamus merrillii Becc.) flexibility and development of a cane flexibility equation.

Authors:Abasolo, W.P; Yoshida, M; Yamamoto, H; Okuyama, T

Abstract:The effect of structure (ground parenchyma and vascular bundle distribution), physical traits (microfibril angle, degree of crystallinity and amorphous region), and cell wall chemistry (cellulose, hemicellulose and lignin) on the amount of compressive strain was evaluated to develop a mathematical model that could describe palasan cane flexibility. Image analysis, iodine staining method, x-ray diffraction technique and standard chemical analysis were performed. Finally, compressive strain was measured using the thermomechanical analyzer. Regression showed that among the different parameters, ground parenchyma percentage, microfibril angle, amount of amorphous region and hemicellulose content were positively correlated to compressive strain. Multiple regressions resulted to the mathematical equation: y = 0.012x2 - 0.001x1 + 0.016x3 + 0.017x4 - 1.861 where; y = compressive strain, x2 is for the microfibril angle, x1 is for the ground parenchyma, x3 is for the amorphous region and x4 is for the hemicellulose content. Among these parameters, hemicellulose content gave the most significant effect with P = 0.050.

Keywords:cell walls; cellulose; compression; equations;

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