Differences of secondary metabolites content in Kasturi Mango (Mangifera casturi Kosterm.) from South Kalimantan by the application of artificial light using light emitting diode

Abstract

Kasturi mango (Mangifera casturi Kosterm.) is one of the endemic plants of South Kalimantan, which is known to have a long juvenile stage. Applying light to the plants will affect plant morphology and physiology changes. The LED light as artificial light is known to modify plant metabolites. This research aimed to determine changes in the response effects of adding artificial light. The LED used three different spectra, red, blue, and white, respectively. Three Kasturi cultivar used: Mawar, Pelipisan, and Kasturi, respectively. Secondary metabolites were carried out by using the gas-chromatography/mass-spectrometry (GC/MS) and liquid-chromatography / mass-spectrometry (LC/MS). Profiling of secondary metabolites using the GC/MS resulted in 19 secondary metabolites, with the common compounds belonging to the sesquiterpenoid group. The Pelipisan accession contains specific compounds from the steroid group with different abundances for each type of LED lamp used. Estimating secondary metabolites using the LC/MS method obtained results of 13 compound groups:  alkaloids, phenolics, antioxidants, and flavonoid compounds, respectively.