Table 1 Main bioactive substances identified from CBT.

From: Black tea rich in polygonatum sibiricum polysaccharides inhibits osteoporosis in ovariectomized mice through immune regulation and gut microbiota suppression

Compound

Formula

Structural or Repeating units

Molecular mass

Identification method

Epigallocatechin

C15H14O7

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306.27

Liquid chromatography

Epigallocatechin gallate

C22H18O11

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458.4

Liquid chromatography

Epidauphine-3-O-gallate

C22H18O11

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458.4

Liquid chromatography

Epicatechin gallate

C22H18O10

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442.4

Liquid chromatography

Epicatechin

C15H14O6

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290.27

Liquid chromatography

Epigallocatechin

C15H14O7

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306.27

Liquid chromatography

Catechin

C15H14O6

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290.27

Liquid chromatography

Quercetin

C15H10O7

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302.23

Liquid chromatography

Rutinose

C12H22O10

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326.3

Liquid chromatography

Theaflavine-3,3’-digallate

C43H32O20

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868.7

Liquid chromatography

Polygonatum sibiricum polysaccharide A

Gal-Gu-Fm(53.22:15.59:31.18)

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7.70 × 103

Mass spectrometry combined with liquid chromatography

Polygonatum sibiricum polysaccharide B

Gal-Glu-Fru(64.85:27.22:7.92)

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7.60 × 104

Mass spectrometry combined with liquid chromatography

Polygonatum sibiricum polysaccharide C

Man-Gal(88.8:11.2)

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2.20 × 104

Mass spectrometry combined with liquid chromatography

Polygonatum sibiricum polysaccharide D

Gal

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4.20 × 104

Mass spectrometry combined with liquid chromatography

Polygonatum sibiricum polysaccharide E

Gal-Man-Gle-Fru

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1.03 × 105

Mass spectrometry combined with liquid chromatography

Polygonatum sibiricum polysaccharide F

Gal-Ara-Rha(14:4:1)

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1.41 × 109

Mass spectrometry combined with liquid chromatography

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