Does Kratom Stem and Vein have alkaloids?

So far more than 45 alkaloids have been isolated from Mitragyna speciosa and there is much variation between trees from different locations and some seasonal influence (Shellard et al., 1978).

Kratom Stem and Vein

The biogenesis of all these alkaloids is unknown and it is possible that precursor alkaloids are synthesised in the root and travel upwards through the vasculature. There could be tissue specific modifications of such precursors resulting in different alkaloid patterns in different tissues (Shellard et al., 1978). In other Mitragyna species such as M. Parvifolia it was shown that stem and bark tissue clearly contain different alkaloids from leaf tissues (Shellard and Lala, 1977). It is not clear which alkaloids are predominantly present in S&V of Mitragyna speciosa material and how exactly these alkaloid fractions differ from sieved leaf.
Although total alkaloid levels are lower than in leaf there is supposedly relatively more mitragynine present in S&V. Also levels of some interesting Uncaria alkaloids are thought to be higher. The most predominant one is probably Mitraphylline. Rhynchophylline and Corynantheidine are also frequently mentioned.


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