Việt Nam EFFECT OF HARVESTING TIME ON THE MEDICINAL QUALITY OF LEAVES AND FLOWERS OF THREE YELLOW CAMELLIA SPECIES (Camellia dalatensis, Camellia dormoyana AND Camellia thuongiana) IN LAM DONG
Việt Nam
DOI:
https://doi.org/10.70169/VJFS.1002Keywords:
Camellia sp, Camellia dalatensis, Camellia dormoyana, Camellia thuongiana, Biologically active substancesAbstract
Yellow Camellia (Camellia sp.) is a valuable medicinal plant, containing many compounds with anti-inflammatory activity, supporting cancer treatment, and other health benefits. This study aims to determine the effect of harvesting time of leaves and flowers on the content of certain medicinal compounds in three species of yellow Camellia collected in Lam Đong. The results show that the highest compound content was found in the leaf powder of C. thuongiana and the flower powder of C. dormoyana, while C. dalatensis had the lowest content in both leaf and flower powders. Harvesting leaves in the third and fourth quarters of the year yielded the highest levels of flavonoids and saponins. For the flowers, harvesting when they bloom for one day resulted in the highest levels of flavonoids, polyphenols, and saponins. Both the leaf and flower powders of the three yellow Camellia species exhibited lower heavy metal content according to QCVN 8-2:2011/BYT.
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