This study involved analysing the carbon-13 isotope ratio (δ13C) of cellulose, lignin, and whole wood powder of Balanites aegyptiaca to determine the optimal substrate for future ecophysiological studies. From seven different trees (i.e., three from the Sudanian zone and four from the Chadian Sahelian zone), 21 samples were taken for this study. Identical variation trends were observed with cellulose, lignin, and whole wood powder, with δ13C values for cellulose always higher than for the other substrates, although the trees were located under different climatic conditions. The means obtained were −26.0 ‰, −28.7 ‰, and −27.1 ‰, for cellulose, lignin, and whole wood powder, respectively. Spearman’s correlation test, which was used to analyse relationships between the results, revealed a strong correlation (r 2 = 0.93) between the δ13C cellulose values and those of whole wood powder from B. aegyptiaca, as well as between the δ13C cellulose values and those of lignin (r 2 = 0.73). This strong correlation between cellulose and wood powder results, and between cellulose and lignin, suggests that the isolation of cellulose is not necessary for δ13C analysis of B. aegyptiaca wood.

中文翻译：

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埃及灯笼草纤维素、木质素和全木粉稳定碳同位素比值的比较研究

本研究涉及分析碳 13 同位素比 (δ13C) 纤维素、木质素和全木粉埃及龟甲虫以确定未来生态生理学研究的最佳底物。本研究从七棵不同的树木（即三棵来自苏丹地区，四棵来自乍得萨赫勒地区）中采集了 21 个样本。纤维素、木质素和全木粉观察到相同的变化趋势，δ13尽管树木位于不同的气候条件下，但纤维素的 C 值始终高于其他基质。纤维素、木质素和全木粉的平均值分别为-26.0 ‰、-28.7 ‰和-27.1 ‰。Spearman 相关性检验用于分析结果之间的关系，结果显示出很强的相关性（r 2= 0.93) 之间 δ13C 纤维素值和全木粉的值乙。埃及花，以及 δ 之间13C 纤维素值和木质素值（r 2= 0.73）。纤维素和木粉结果之间以及纤维素和木质素之间的这种强相关性表明，对于 δ 来说，不需要分离纤维素。13C 分析乙。埃及花木头。