01233naa a2200253 a 450000100080000000500110000800800410001902400380006010000180009824501370011626000090025352004640026265000130072665000130073965000160075265000160076865000210078465300180080570000190082370000200084270000250086270000200088777300720090721594322023-12-11       2023    bl uuuu     u00u1 u    #d7 a10.22533/at.ed.15939823281132DOI1 aSANTOS, L. P.  aMethylxanthins and tannins content in young leaves of guaranaze cultivars under different production systems.h[electronic resource]  c2023  aThis work was developed with the general objective of evaluating the potential of using young guarana leaves as raw material for the food, cosmetics and pharmaceutical industries, and with specific objectives of assessing the possible existence of differential responses of cultivars and production systems, to the variable methylxanthines (caffeine and theobromine) and condensed tannins (epicatechin and catechin) from new, recently sprouted guarana leaves.  aCaffeine  aCatechin  aEpicatechin  aTheobromine  aPaullinia Cupana  aFertilization1 aSCHIMPL, F. C.1 aSILVA, E. de B.1 aSANTOS, G. A. N. dos1 aSILVA, J. F. da  tInternational Journal of Health Sciencegv. 3, n. 98, p. 1-7, 2023.