Grapevine leaves(Vitis vinifera):Chemical characterization of bioactive compounds and antioxidant activity during leave development

作     者：Franks Kamgang Nzekoue Manuella Lesly Kouamo Nguefang Laura Alessandroni Ahmed M.Mustafa Sauro Vittori Giovanni Caprioli 

作者机构：CHemistry Interdisciplinary Project (CHIP)School of PharmacyUniversity of CamerinoVia Madonna delle Carceri62032CamerinoItaly Department of PharmacognosyFaculty of PharmacyZagazig UniversityZagazig44519Egypt 

出 版 物：《Food Bioscience》 (食品生物科学（英文）)

年 卷 期：2022年第50卷第6期

页      面：1579-1586页

核心收录：

学科分类：1008[医学-中药学(可授医学、理学学位)] 1006[医学-中西医结合] 100602[医学-中西医结合临床] 10[医学] 

主　　题：Grape leaves Polyphenols Carotenoids Tocopherols Phytosterols Antioxidants Waste valorization 

摘      要：Leaves from Vitis vinifera *** the less studied and valorized wastes of grape crops and the winery *** study aims thus to perform for the first time a deepened assessment of the bioactive compounds in grapevine *** detailed composition of main phytochemicals involved in the high antioxidant of grape leaves(2.20 g TE/100 g)was determined including carotenoids(lutein,β-carotene),tocopherols(αandɣ-tocopherol),polyphenols(phenolics acids,flavonoids),and phytosterols(β-sitosterol).In particular,high levels of lutein(0.3–1.0 g/kg)andα-tocopherol(0.2–1.2 g/kg)were ***,the evolution of bioactive compounds during 7 harvesting times from July to October was also studied showing that the content of phytochemicals fluctuates according to the development stage of grape *** for example reached their highest levels in leaves in the later stage of maturation(T6–T7)with values around 169±40 mg/kg.