Table 1.

Diterpenoids identified in vinegar-processed and raw Gansui samples

Peak no.	RT (min)	m/z (ESI+) [M + Na]+	m/z (ESI-)	Identification	Decreased rate %
1	3.24	673.2734 473.3624 351.2374	649.1583 [M-H]-	3-O-benzoyl-13-O-dodecanoylingenol/ 20-O-benzoyl-13-O-dodecanoylingenol	32.16
2	5.66	816.2931 756.2880 369.3048 327.1625 309.1534 281.2695	792.2738 [M-H]-	Kansuinine D	22.21
3	5.99	753.2812 633.5187 631.5071 453.3395 369.3039 341.3193 281.2689	729.2786 [M-H]-	Kansuinine A	15.23
4	7.02	673.3103 473.3667 351.1501	649.3470 [M-H]-	3-O-benzoyl-13-O-dodecanoylingenol/ 20-O-benzoyl-13-O-dodecanoylingenol	24.85
5	7.18	475.3825 457.3708 353.1428	433.2364 [M-H2O-H]-	3-O-benzoylingenol/20-O-benzoylingenol	7.89
7	11.80	521.2948 503.2292 353.1763 335.1564	497.2814 [M-H]-	20-O-(2′E,4′Z-decadienoyl)ingenol/ 20-O-(2′E,4′E-decadienoyl)ingenol/ 3-O-(2′E,4′Z-decadienoyl)ingenol/ 3-O-(2′E,4′E-decadienoyl)ingenol	6.66
8	13.26	505.2980 337.1818	481.2945 [M-H]-	3-O-(2′E,4′Z-decadienoyl)-20-deoxyingenol	26.93
9	13.50	563.5580 503.2812 395.1912	585.3019 [M + HCOO]-	3-O-(2′E,4′Z-decadienoyl)-5-O-acetylingenol	95.25
10	14.61	563.3061 503.3406 395.1876 335.1636	539.0378 [M-H]-	3-O-(2′E,4′Z-decadienoyl)-20-O-acetylingenol	10.72
11	18.27	645.4619 [M + H]+ 627.4326 529.3592 511.3414 427.2519 329.1778 311.1680	689.4784 [M + HCOO]-	3-O-(2,3-dimethylbutanoyl)-13-O-dodecanoylingenol	17.40