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Xiaoqian Wang,Chunyan Liu,Qiang Wang,Chang Liu,Huili Sun,Maojun Zhang,Deguo Lyu,Guodong Du 한국원예학회 2021 Horticulture, Environment, and Biotechnology Vol.62 No.3
Pyrus ussuriensis is the most important cultivated pear in the northeastern, cold areas of China. However, studies on thebiological activity of Pyrus ussuriensis fruit are rare in the public domain. The present study compared antioxidant, antiinflammatory, and antimicrobial activities and chemical composition in tissues from the peel and fl esh of nine Pyrus ussuriensiscultivars. The chemical composition diff ered among cultivars and tissue sources. Phenolics were predominant in peelsamples, whereas sugars were predominant in fl esh samples. Twenty-one phenolic compounds were identifi ed and quantifi ed,including hydroxycinnamic acids, hydroquinones, fl avanols, fl avonols, fl avones, and anthocyanins (only in peel samples). The total phenolic content ranged between 363.0 and 1734.0 mg kg − 1 FW in the peel and from 28.5 to 182.3 mg kg − 1 FWin the fl esh. In addition, cultivars with high total phenolic and fl avonoid contents had signifi cantly higher antioxidant activities. The in vitro anti-infl ammatory study, performed using an egg albumin denaturation assay, demonstrated that both peeland fl esh samples had strong activity, which was comparable with that of the standard anti-infl ammatory drug diclofenacsodium. The antimicrobial results showed that ‘Jianba’ and ‘Balixiang’ cultivars exhibited strong activity against bacteriastrains in the peel and fl esh, respectively. The present study provided information for selecting promising Pyrus ussuriensiscultivars with improved health benefi ts.
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