Antioxidant (gallic acid and quercetin) profile of Sumatran wild mangoes (Mangifera spp.): a potential source for antidegenerative medicine

Abstract

Background: New findings on the potential of wild mangoes from the island of Sumatra as a source of antioxidant helps their conservation effort as it introduces their useful compounds to the public. This study aims to analyze the antioxidant profile and quantification of gallic acid and quercetin content from leaves and bark of Sumatran wild mangoes. Exploration and analysis of phytochemical constituents from 11 Sumatran wild mangoes was performed. Methods: Antioxidant activity of wild mangoes was analysed with 1,1- diphenyl-2-picryl hydroxyl (DPPH), and determination of quercetin and gallic acid content was performed by high performance liquid chromatography (HPLC) method. Total flavonoid and phenolic analysis was also performed. Curve fitting analysis used a linear regression approach. Results: The highest level of antioxidant activity, phenolic compound and flavonoid compound was found in the leaves and bark of Mangifera sp1. (MBS), the bark of M. foetida3 (var. batu) and leaves of M. torquenda, and the bark and leaves of M. sumatrana, respectively. The content of gallic acid in leaves ranged from 5.2270-35.4763 mg/g dry weight. Quercetin content of wild mangoes leaves ranged from 0.76 to 1.47 mg/g dry weight with the lowest value in M. foetida2 (var. manis) and the highest in M. laurina. Conclusion: The results obtained are expected to be useful in supporting the development of antidegenerative drugs from natural ingredients that have potential as immunomodulatory agents.

Performance of Anticorrosive Measures of Steel in Concrete Infrastructure by Plant‐Based Extracts

“…Similarly, the LEPG showed a negative test for saponin and steroids in contrast with the positive test for the LEMI. The preliminary phytochemical screening outcomes for the LEMI, [ 50–52 ] and LEPG [ 53,54 ] extracts are consistent with the pieces of literature. These phytoconstituents may assist in the formation of a diffusion barrier film at steel bar–concrete interfaces.…”

Phenolic compounds in mango fruit: a review

“…Among the leaves and bark of 11 Sumatran wild mangoes, the highest level of antioxidant activity, phenolic compound and flavonoid compound was found in the leaves and bark of Mangifera sp1., the bark of Mangifera foetida 3 (var. batu) and leaves of Mangifera torquenda, and the bark and leaves of Mangifera sumatrana, respectively [111].…”

Comparative Studies on the Anti‐Corrosive Action of Waterproofing Agent and Plant Extract to Steel Rebar

“…These preliminary screening test results are in line with the previously reported data. [49,50] The outcomes of the screening tests support that the methanol extract of mango leaves could be acted as potent materials for controlling the concrete corrosion. It is meaningful to notice that M. indica leaf extract consisted of potential sources (i.e., phytoconstituents) of green active corrosion inhibitors, which showed about 90% corrosion inhibitory action to the mild steel in seawater from previous studies.…”