###### Abstract  
_Panax ginseng_ C.A. (_P. ginseng_) Meyer has been in use since ancient times for its therapeutic activities. Although several studies have investigated the roles of phytoconstituents in human and animal health, no comparative studies have been conducted to test the efficacy of _P. ginseng_ leaf, fruit and root. Therefore, this study aimed to identify the antioxidant and anticorrosion activities of ginseng prepared using five different solvents. The methanolic fruit extract showed comparatively good activity in all assays. The total phenolic content (TPC) was higher in fruit (95.21 mg/g), followed by leaf (39.21 mg/g) extracted in methanol solvent compared other solvents. The total flavonoid content (TFC) of fruit methanolic extract was 50.21 mg/g, which was followed by fruit extracted in ethanol (41.33 mg/g). The same phenomenon was observed in all antioxidant studies. Through Ultrahigh Performance Liquid Chromatography (UHPLC), the presence of 23 phenolic components categorized as hydroxcinaminic acids, hydroxbenzoic acids and a few other groups that play a vital role in antioxidant was identified. Phenols such as chlorogenic acid (1002.2 ug/g), gentistic acid (854.21 ug/g) and rutin (165.32 ug/g) were found in higher amounts in fruit whereas leaf showed significant amounts of _m_-coumaric acid (185.32 ug/g) and _p_-coumaric acid (125.24 ug/g). The anti-corrosive property of the fruit extract of the ginseng with methanol as a solvent was analyzed for a copper specimen exposed to 1 M HCl medium and found to have 96% corrosion inhibition efficiency at a 1000-ppm concentration. The smooth surface of the specimen exposed to corrosive media shown in a field emission scanning electron microscope (FESEM) image confirms that the specimen was protected from corrosion, and energy-dispersive X-ray spectroscopy (EDX) spectra show that the loss of Cu is reduced in inhibited metal surface. Atomic force microscopy (AFM) images and surface roughness factor also validate the corrosion inhibition characteristic of ginseng plant extract. g 2020 20  
give rise to all three varieties [1; 2; 3; 4]. Aromatic hydroxylated constituents, commonly known as polyphenols, are found in greens, fruits, herbs and vegetables. Many published reports have emphasized the influence of these compounds on human health [5; 6; 7; 8]. These phenolic derivatives of one of the secondary metabolites (ginsenosides) are known to exert diverse biological properties, such as antibiotic, anti-tumor, antioxidant, and antimicrobial activities. Hence, the incorporation of these phenolic compounds into our daily diet helps to reduce the risk of numerous degenerative and chronic diseases [9]. Many bioactive elements such as phenolic components, ginsenosides, essential oils, proteins and polysaccharides are found in several varieties of ginseng. Different types of ginseng such as red, white and black ginseng are prepared from a single variety by following different manufacturing processes [10]. Fresh ginseng is steamed at 95-100 \({}^{\circ}\)C for some time to produce red ginseng; dried in sunlight for a considerable amount of time to produce white ginseng; or steamed more than nine times for 3 h at 95-100 \({}^{\circ}\)C to produce black ginseng [11; 12; 13]. Diverse types of ginsenosides were identified in various studies which showed the importance of ginseng in pharmacology [14; 15; 16]. Ginsenosides are steroids, glycosides and triterpen saponins which can be separated into two categories: protopanaxadiol ginsenosides and protopanaxatriol ginsenosides. There are a wide variety of saponins, including Ra1-Ra3, Rb1-Rb3, MA-Rb2, Rc, MA-Rc, Rd, MA-Rd, Rg1-Rg3 and Rh1-Rh3, which have been separated using HPLC. In addition, they also encompass many other components, such as quinoquenosides (Q), malonyls (MA), occillol, protopanaxatriols (PPT), glucopyranosyl (Glc) and oleanolic acid (Ro) [17; 18; 19].