Antioxidant, Antimicrobial Activities and Phenolic and Chemical Contents of Physalis peruviana L. from Trabzon, Turkey

Abstract:

Background: Goldenberry (Physalis peruviana L.) is one of the most promising exotic fruits in terms of its biological capacity. Objective: In this work, ethanol extracts of the different parts (fruit, seed, root, body and leaf) of the P. peruviana were investigated in terms of their antioxidant and antimicrobial activity. Furthermore total phenolic and flavonoid contents, phenolic analysis and volatile compound analysis were exhibited. Method: Total phenolic and flavonoid contents were calculted as gallic acid and quercetin equivalent respectively. Antioxidant activity were studied based on DPPH free radical scavenging activity. Antimicrobial activity were determined by disc diffusion method against several bacteria, a fungi and a yeast. Analysis for phenolic and volatile compounds were exhibited by using HPLC and GC-MS respectively. Results: The values obtained for the total phenolic and flavonoid contents and SC₅₀ values calculated for DPPH scavenging activities were compatible with each other. Extract prepared from the seed had the highest phenolic (4.956±0.001 mg GA/g sample) and flavonoid content (0.737±0.034 mg QE/g sample). Gallic acid and ferulic acid were detected in all extracts. The most volatile species (190 pieces) detected in root extract. Seed and fruit were the most effective parts of the P. peruviana in terms of their antimicrobial activity. Conclusion: According to obtained results it has been demonstrated that P. peruviana from Trabzon had good useful properties for human health and it would be useful to carry out further researchs on it.

Key words: Antioxidant, Antimicrobial, Physalis peruviana L, DPPH, HPLC, GC-MS.