Variation in sugarcane biomass composition and enzymatic saccharification of leaves, internodes and roots

Table 3 Correlation of cell wall component vs. glucose released from the cell wall during enzymatic saccharification

Saccharified sugar	Biomass component	vs. Sugarcane tissue component	Pearson correlation	Significance (2-tailed)	R² (Regression)	Slope (b1)	Significance (Regression)
% Glucose released	Cell wall	Cellulose	− 0.3	0.08	0.3	− 0.08	0.08
		Hemicellulose	− 0.18	0.3	0.03	0.04	0.00
		Lignin	− 0.66	0.00	0.44	− 0.19	0.00
	Hemicellulose	Mixed-linked Glucan	0.43	0.01	0.19	0.27	0.01
		Xylose	− 0.07	0.67	0.01	− 0.04	0.67
		Arabinose	− 0.41	0.01	0.17	− 0.11	0.01
		Galactose	− 0.45	0.01	0.2	− 0.12	0.01
	Lignin	Guaiacol	0.09	0.6	0.01	0.01	0.6
		Ethyl-2-Phenol	0.52	0.00	0.27	0.04	0.001
		Creosol	− 0.28	0.11	0.08	− 0.01	0.11
		4-Ethyl guaiacol	0.28	0.10	0.08	0.02	0.1
		4-Vinyl guaiacol	− 0.28	0.1	0.08	− 0.13	0.1
		Syringol	0.24	0.15	0.06	− 0.06	0.15
		Isovanillin	0.18	0.29	0.03	0.02	0.29
		Isovanillic acid	0.23	0.18	0.05	0.07	0.18
		Isoeugenol	− 0.43	0.00	0.19	− 0.05	0.01
		Methoxy-eugenol	− 0.04	0.8	0.00	− 0.02	0.8
		p-Coumaric acid	0.1	0.56	0.01	0.13	0.56
		Ferulic acid	− 0.15	0.38	0.02	− 0.01	0.38
		AIL	− 0.67	0.00	0.45	− 1.61	0.00
		ASL	− 0.6	0.00	0.36	− 0.45	0.00
		S/G ratio	0.05	0.77	0.00	0.00	0.77
	Other analyses	FA/Ara ratio	0.43	0.01	0.18	0.00	0.01
	Other analyses	Cont. of glucan	0.15	0.39	0.02	0.00	0.39

All tissues from both genotypes included in the analysis (N = 36). Values compared are presented in Fig. 3. S/G ratio stands for the ratio of syringyl and guaiacyl lignin species, FA/Ara ratio is the ratio of ferulic acid and arabinose in each sample, and cont. of glucan describes the content of glucan/(lignin + xylan), as described in [38, 39, 33], respectively. AIL and ASL stand for acid-insoluble lignin and acid-soluble lignin, respectively. Italic columns display components with a significant |Pearson correlation value|≥ 0.3 and p ≤ 0.05

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