Discoloration and Degradation of Bamboo under Ultraviolet Radiation

Table 2

The main degraded products identified by HPLC-MS from UV-aged Moso bamboo.

No.	CAS	Molecular formula	English name	Group area	Structural formula
1	8027-56-3	C6H12O6	p-Hydroxybenzaldehyde	21,531,976.80
2	14641-93-1	C12H22O11	Isovanillin	34,717,194.87
3	6915-15-7	C4H6O5	4-Hydroxyacetophenone	378,427,506.25
4	527-61-7	C8H8O2	2,6-Dimethylbenzoquinone	286,856,553.02
5	99-96-7	C7H6O3	3-Hydroxy-4-methoxybenzoic acid	188,840,834.29
6	331-39-5	C9H8O4	4-tert-Butylcatechol	2,199,219.54
7	2107-77-9	C10H8O4	3,5-Dimethoxybenzoic acid	23,782,373.13
8	121-33-5	C8H8O3	Syringaldehyde	454,084,233.89
9	103-26-4	C10H10O2	Acetosyringone	4,216,017.43
10	480-19-3	C16H12O7	Syringic acid	31,272,952.29