Structural characterization of a low-molecular weight linear O-acetyl-glucomannan in Lilium lancifolium from Tibet and its protected H2O2-induced oxidative stress in HUVEC cells

Chemical and Biological Technologies in Agriculture

Table 1 Methylation analysis of LP-1

Methylated sugars	Linkages	Molar ratio	Major mass fragments (m/z)
2,3,4,6-Me₄-Glcp	Glcp-(1 →	1.0	43,71,87,101,117,129,145,161,205
2,3,6-Me3-Manp	→ 4)-Manp-(1 →	8.8	43,87,99,101,113,117,129,131,161,173,233
2,3,6-Me3-Glcp	→ 4)-Glcp-(1 →	5.3	43,87,99,101,113,117,129,131,161,173,233