Marcos, Ailaine Joy A. <br/><br/>
Phytochemical Properties and Antioxidant Screening of Gemelina Leaf Extract  [manuscript] / 
Ailaine Joy A. Marcos. 
 - Magalang, Pampanga :  Pampanga State Agricultural University,  July 2022. 
 - 82 leaves ;  28 cm. + 1 computer disc (4 3/4 in.) 
<br/><br/>Marces, Ailaine Jaw A. July 2022. PHY TOC HE MIC AL PROPERTIFS AND ANTIONIDANT SC REBNING OF CE MELINA (Crrtina erberve Rewth) 1 FAP     KATRACT. BACHELOR OF OC TENCE IN BIOLOGY. MAJOR IN MO4 FC ULAR BIOLOGY AND BIOTECHNOT OGY, Pampangn Sate Agriculteral ( aivervty.     Adveer: Reth T. Libag,. RUIT, UE PT, MOAR C hem.     Traditonal medcine plants have been a significant therapeutical source smce     anceent days. This study provides vanous aspects of the Gemeline ((:melina arhovee Roxb.) m terms of tts phytochemical and antioxidant properties that contnbute to it:     mehcsnal significance. Specifically. this study aimed the determination of the present phytochermcal     propertes of the G. arborea leaf extract and its antioxidant properties. The screerang for phytochemicals and antoxidants used the Thin-Layer Chromatography (TLC) techmque, including using differemt spray reagents for phytochemistry and an Assay of 2-2. ~-diphenyi--1-picryl-hydrazy!l-hydrate for the determination of antioxidants in the leaf     extract. The screening of phytochemical properties of G. arborea leaf extract indicates the presence of Phenols, Steroids, Tannins, Flavonoids, Triterpenes, Alkaloids, and Essential Oils. The plant G. arborea leaf also showed radical scavenging activities against stable radical DPPH identified at the Retention Factor (Rf) values from 0.0 to 0.581. Therefore, the results indicated that the leaf extract of G. arborea contained abundant phytochemicals     and a source of antioxidants.     The study established the baseline data for the potential of G. arborea as a source of alternative medicine with various phytochemicals and antioxidants beneficial for drug discovery. However, further studies on identifying the phytochemical constituents and their mechanisms in exhibiting certain biological activities are needed.     Keywords: Antioxidant; DPPH Assay; Gmelina arborea (Roxb); Leaf extrect, Phytochemicats; Phytochemistry; Retention Factor; Thin-Layer Chromatography.