Isolasi dan Karakterisasi Senyawa Aktif dari Daun Ungu (Graptophyllum pictum): Tinjauan Literatur

Abstrak

Purple leaf (Graptophyllum pictum) is a traditional Indonesian
medicinal plant that is reported to contain diverse active compounds, yet studies
isolating single compounds with defined structures remain scattered and have not
been systematically compiled. Objective: This literature review aims to summarize and analyze studies on the
isolation of active compounds from purple leaf, covering isolation methods,
compound classes, and bioactivities.
Methods: A literature search was conducted using PubMed, Google Scholar,
Garuda, DOAJ, Neliti, and ResearchGate databases. Primary studies from the last
10 years on isolation with structural identification, or chromatographicspectrometric
profiling, of G. pictum were included; five studies (four isolation, one
profiling) were analyzed qualitatively.
Results: Four isolation studies reported furanolabdane diterpenoids (Hypopurin A,
B, and E), a triterpenoid (lupeol), steroids and steroid glycosides, and a flavonoid
tentatively identified as catechin, while one profiling study identified 12 compounds
in the methanol extract by GC-MS. The reported biological activities were diverse,
including anticholinesterase (isolated Hypopurin A), antidiabetic, antibacterial,
cytotoxic (methanol extract), and sun-protective (isolated catechin) effects.
Conclusion: Purple leaf is a rich source of compounds with potential as a
multifunctional therapeutic agent. Further research is needed for definitive
isolation of flavonoids, testing of isolated phenolic/flavonoid compounds, and in
vivo evaluation of neuroprotective activity.
Keywords: Graptophyllum pictum, purple leaf, compound isolation, secondary metabolites,
literature review