Bamboo is a well-known medicinal plant in Southeast Asia that recently has attracted\nattention for its high polyphenol content and its medical and nutraceutical applications. In this work,\npolyphenols have been recovered for the first time by microwave-assisted extraction (MAE) from an\nunusual Italian cultivar of Phyllostachys pubescens bamboo shoots. The effects of three independent\nvariables, such as extraction time, temperature, and solid/liquid ratio, on polyphenol recovery\nyield were investigated and successfully optimized through the response surface methodology.\nWe demonstrated that MAE is an excellent polyphenols extraction technique from bamboo shoots\nbecause the total phenolic content obtained under microwave irradiation optimal conditions (4 min at\n105 DegreeC with 6.25 mg/mL ratio) was about eight-fold higher than that obtained with the conventional\nextraction method. Furthermore, higher total flavonoid content was also obtained under MAE.\nConsistent with these results, MAE enhanced the extract antioxidant properties with significant\nimproved DPPH, ABTS, and FRAP scavenging ability. Therefore, this innovative extraction process\nenhances the recovery of biologically active compounds from Phyllostachys pubescens bamboo shoots\nwith a dramatic reduction of time and energy consumption, which paves the way for its industrial\napplication in functional food production.
Loading....