staff-old.najah.edu · PDF fileyamogenin, gitogenin and tigogenin. Mucilage, mostly a...
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staff-old.najah.edu · PDF fileyamogenin, gitogenin and tigogenin. Mucilage, mostly a galactomannan. Alkaloids, including trigonelline (N-methyl- pyridinium-3-carboxylate, 0.4%), gentianine