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Fig. 4 | Chinese Medicine

Fig. 4

From: Rapid identification of growth years and profiling of bioactive ingredients in Astragalus membranaceus var. mongholicus (Huangqi) roots from Hunyuan, Shanxi

Fig. 4

Quantitative localization of the main flavonoids and saponins in huangqi. (a1) Segment stained with 5% sodium hydroxide solution compared with the negative control segment (a2). (a3) Segment stained with 5% vanillin-sulfuric acid solution or unstained compared with the negative control segment (a4). b The concentration of four flavonoids and two saponins in different tissues. Data are expressed as the mean ± standard deviations from three samples, each of which was determined in triplicate. The slices were divided into seven areas, from the outside to inside, as follows: Pd, periderm; SPh1 and SPh2, secondary phloem zones 1–2; SX1, SX2, SX3, and SX4, secondary xylem zones 1–4; Ho, rotten heart

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Chinese Medicine

ISSN: 1749-8546

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