<p>Traditional crops have gained considerable importance in biomedical research due to emerging evidence suggesting their positive impact on human health. The two important Himalayan crops i.e., Finger millet (<i>Eleusine coracana</i> (L.) Gaertn.) and Dolichos beans (<i>Lablab purpureus</i> L. Sweet) are considered nutritious and wholesome due to their high fibre content. The primary objective of this research is to assess the antioxidant potential of different extracts (aqueous-methanol, hexane, and aqueous) obtained from <i>Eleusine coracana</i> (L.) Gaertn. and <i>Lablab purpureus</i> L. The in-vitro assays including 2,2-diphenyl-1-picrylhydrazyl (DPPH•) radical scavenging assay, Ferric Reducing Antioxidant Power (FRAP) and % metal chelating methods were employed to evaluate the antioxidant activity of various extracts from <i>E. coracana</i> (L.) Gaertn. and <i>L. purpureus</i> L. Phytochemical analysis of both plants was conducted using UPLC-MS/MS. The in-vitro assays conducted on different plant extracts indicated that aqueous methanol extracts exhibited the highest antioxidant activity in terms of EC50 values of DPPH• radical scavenging activity 85.51 ± 1.87 and 291.42 ± 0.11 µg/mL; FRAP 2.01 ± 0.01 and 2.08 ± 0.10 mM FeSO<sub>4</sub>/mg extract; metal chelation 52.83 ± 1.58 and 74.62 ± 0.01% respectively in S1 and S2 sample, possibly due to their higher total phenolic content (TPC). Phytochemical analysis revealed the presence of compounds such as n-feruloyltyramine, tricetin, kaempferol (or luteolin)-o-glucoside/isomers, delphinidin-3-o-arabinoside, quercetin and fisetin in <i>Eleusine coracana</i> (L.) Gaertn., and diferulic acid, cyanidin-3-o-glucoside, 3-o-methylquercetin, delphinidin-3-o-arabinoside, quercetin and cinnamic acid glucoside in <i>Lablab purpureus</i> subsp. purpureus. Aqueous methanolic extract demonstrated the most potent antioxidant activity. Therefore, incorporating these crops into the diet may contribute to promoting a healthy and fulfilling lifestyle.</p>

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Evaluation of antioxidant activity and UPLC–MS/MS phytochemical profiling of two important Himalayan crops Eleusine coracana (L.) Gaertn. and Lablab Purpureus subsp. Purpureus

  • Vikas Chander,
  • Rakesh Singh,
  • Kumud Upadhyay

摘要

Traditional crops have gained considerable importance in biomedical research due to emerging evidence suggesting their positive impact on human health. The two important Himalayan crops i.e., Finger millet (Eleusine coracana (L.) Gaertn.) and Dolichos beans (Lablab purpureus L. Sweet) are considered nutritious and wholesome due to their high fibre content. The primary objective of this research is to assess the antioxidant potential of different extracts (aqueous-methanol, hexane, and aqueous) obtained from Eleusine coracana (L.) Gaertn. and Lablab purpureus L. The in-vitro assays including 2,2-diphenyl-1-picrylhydrazyl (DPPH•) radical scavenging assay, Ferric Reducing Antioxidant Power (FRAP) and % metal chelating methods were employed to evaluate the antioxidant activity of various extracts from E. coracana (L.) Gaertn. and L. purpureus L. Phytochemical analysis of both plants was conducted using UPLC-MS/MS. The in-vitro assays conducted on different plant extracts indicated that aqueous methanol extracts exhibited the highest antioxidant activity in terms of EC50 values of DPPH• radical scavenging activity 85.51 ± 1.87 and 291.42 ± 0.11 µg/mL; FRAP 2.01 ± 0.01 and 2.08 ± 0.10 mM FeSO4/mg extract; metal chelation 52.83 ± 1.58 and 74.62 ± 0.01% respectively in S1 and S2 sample, possibly due to their higher total phenolic content (TPC). Phytochemical analysis revealed the presence of compounds such as n-feruloyltyramine, tricetin, kaempferol (or luteolin)-o-glucoside/isomers, delphinidin-3-o-arabinoside, quercetin and fisetin in Eleusine coracana (L.) Gaertn., and diferulic acid, cyanidin-3-o-glucoside, 3-o-methylquercetin, delphinidin-3-o-arabinoside, quercetin and cinnamic acid glucoside in Lablab purpureus subsp. purpureus. Aqueous methanolic extract demonstrated the most potent antioxidant activity. Therefore, incorporating these crops into the diet may contribute to promoting a healthy and fulfilling lifestyle.