Abstract
Bamboo is a well-known medicinal plant in Southeast Asia that recently has attracted attention for its high polyphenol content and its medical and nutraceutical applications. In this work, polyphenols have been recovered for the first time by microwave-assisted extraction (MAE) from an unusual Italian cultivar of Phyllostachys pubescens bamboo shoots. The effects of three independent variables, such as extraction time, temperature, and solid/liquid ratio, on polyphenol recovery yield were investigated and successfully optimized through the response surface methodology. We demonstrated that MAE is an excellent polyphenols extraction technique from bamboo shoots because the total phenolic content obtained under microwave irradiation optimal conditions (4 min at 105 °C with 6.25 mg/mL ratio) was about eight-fold higher than that obtained with the conventional extraction method. Furthermore, higher total flavonoid content was also obtained under MAE. Consistent with these results, MAE enhanced the extract antioxidant properties with significant improved DPPH, ABTS, and FRAP scavenging ability. Therefore, this innovative extraction process enhances the recovery of biologically active compounds from Phyllostachys pubescens bamboo shoots with a dramatic reduction of time and energy consumption, which paves the way for its industrial application in functional food production.
Highlights
Bamboo is a perennial, woody grass, evergreen plant, and one of the oldest plants on Earth. more than 1250 species belonging to 75 genera are distributed worldwide, it grows predominantly in Asia [1,2]
We performed the bamboo shoot conventional extraction, according to the procedure recently proposed by Park et al [5], which maintains the same relationship between the bamboo shoots and solvent (50 mg/7.5 mL)
Response surface methodology has been applied to optimize the total phenolic content (TPC) in bamboo shoot (P. pubescens) extracts obtained by microwave-assisted extraction (MAE)
Summary
Woody grass, evergreen plant, and one of the oldest plants on Earth. more than 1250 species belonging to 75 genera are distributed worldwide, it grows predominantly in Asia [1,2]. Bamboo is popularly known for its industrial uses and has long been used in. China and Southeast Asia both as a food and in traditional medicine [3]. Several pharmacological properties have been reported for bamboo such as anticancer, antioxidant, antibacterial, antidiabetic, antiulcer, anti-inflammatory, and antihypertensive activities [2,4]. Most research studies have investigated the functional activities of bamboo leaves [6,7,8,9,10,11,12,13,14,15,16], only a few studies have been reported on the functional properties of bamboo shoots, which rank among the five most popular healthcare foods in the world
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
