A comparative study of antimicrobial and anti-inflammatory efficiency of modified solvent evaporated and vacuum oven dried bioactive components of Pleurotus floridanus
2021
Bains, Aarti | Chawla, Prince | Tripathi, Astha | Sadh, Pardeep Kumar
In the present study, we compared vacuum microwave oven drying Vacuum Oven Drying (VOD) and modified solvent evaporation (MSE) assisted methanolic mushroom extracts for their antimicrobial and anti-inflammatory efficacy. MSE extract showed significantly (p < 0.05) higher total phenolic content (64.4 mg/g) followed by flavonoid content (20.62 mg/g), ascorbic acid (17.54 mg/g), β-carotene content (12.52 mg/g), and lycopene (9.57 mg/g) content than that of VOD extract. MSE showed a significantly (p < 0.05) higher zone of inhibition against all selected microorganisms as compared to VOD extract. During the time-kill study, the MSE extract inhibited significantly (p < 0.05) higher growth of Staphylococcus aureus followed by Pseudomonas aeruginosa, Klebsiella pneumoniae, and Escherichia coli than that of VOD extract. Also, MSE extract showed significantly (p < 0.05) higher anti-inflammatory activity in comparison with VOD extract during the Human Red Blood Cell (HRBC) membrane stabilization test and albumin denaturation test. MSE extract revealed significantly (p < 0.05) higher 2,2-diphenyl-1-picrylhydrazyl (DPPH) and N₂O₂ scavenging assay than that of VOD extract, however, statistically, MSE extract showed comparable results with Butylated Hydroxyanisole (BHA) and Butylated Hydroxytoluene (BHT). During the characterization of the selected extract, Fourier transform infrared spectroscopy confirmed the functional groups of the flavonoid content, ascorbic acid, β-carotene, and lycopene. Quantitative analysis of gallic acid (54.32 mg/g) and rutin content (14.80 mg/g) was revealed using a high-pressure liquid chromatogram.
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