Triterpenes and sterols from Achras zapota
DOI:
https://doi.org/10.26534/kimika.v20i1.1-4Keywords:
Achras zapota, Sapotaceae, chico, triterpenes, sterols, antimicrobialAbstract
The freeze-dried unripe fruit of Achras zapata afforded a mixture of β-amyrin pentanoate (1a) and α-amyrin pentanoate (1b) in a 2:1 ratio, a mixture of spinasterol (2a) and taraxerol (2b) in a 2.4:1 ratio, and a fatty acid ester of oleanolic acid (3). Their structures were identified by NMR spectroscopy. 3 and the mixture of Ia and lb were tested for antimicrobial activity by the agar cup method. The mixture of 1a and 1b showed moderate activity against the fungus, Candida albicans and low activity against the fungi, Aspergillus niger and Trichophyton mentagrophytes. 3 gave low activity against C. albicans and A. niger, andinactive against T mentagrophytes. They were inactive against the bacteria: Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, and Bacillus subtilis.Downloads
How to Cite
Ragasa, C. Y., Jorvina, K., & Rideout, J. A. (2004). Triterpenes and sterols from Achras zapota. KIMIKA, 20(1), 1–4. https://doi.org/10.26534/kimika.v20i1.1-4
Issue
Section
Research Articles
License
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).