Table 2.

The mean contents of saponins in the 2-year and 3-year ZMD samples (μg/g).

	GL		YL
	2Y	3Y	2Y	3Y
Ophiopogonin B	52.64 ± 5.45	36.79 ± 0.22	16.33 ± 0.84	17.56 ± 0.32
Ophiopogonin D	18.64 ± 0.60	41.51 ± 2.12∗∗	2.45 ± 0.72	11.29 ± 0.38∗∗
Ophiopogonin D′	62.02 ± 10.34	65.90 ± 2.64	14.32 ± 0.29	15.63 ± 0.35
Total	133.33	144.20	33.10	44.48

^∗∗Significant difference in contents between 2-year and 3-year maidong (p ≤ 0.01). GL: green leaf maidong; YL: yellow leaf maidong; 2Y: 2-year maidong; 3Y: 3-year maidong.