Table 2.

Percentage (of total dry matter) of acetylation and methylation of different pectin-rich materials

Pectin substrate	Acetylation (%)	Methylation (%)	References
Citrus fruits (orange, lime, lemon)	3	60–80	Sakai et al. (1993); Yapo et al. (2007a); Williams (2011)
Apple	4	80	Sakai et al. (1993); Williams (2011)
Sugar beet	10–20	Up to 60	Sakai et al. (1993); Yapo et al. (2007b); Williams (2011)