Effects of Weather Conditions on Phenolic Content and Antioxidant Capacity in Juice of Chokeberries (Aronia melanocarpa L.)

Polish Journal of Food and Nutrition Sciences

Vujević Predrag¹  Milinović Bernardica¹  Vahčić Nada²  Tolić Mandica-Tamara²  Krbavčić Ines Panjkota²  Jurčević Irena Landeka² 

[1] Croatian Centre for Agriculture, Food and Rural Affairs, Department of Pomology, Rim 98, 10000 Zagreb, Croatia;University of Zagreb, Faculty of Food Technology and Biotechnology, Department of Food Quality Control, Pierottijeva 6, 10000 Zagreb, Croatia;

关键词: Aronia melanocarpa;    polyphenols;    chemical composition;    seasonal changes;   

DOI  :  10.1515/pjfns-2016-0009

来源: DOAJ

【 摘 要 】

Chokeberries are a subject of numerous studies due to a high phenolic compound content, antioxidant properties and potential positive influence on the health. Effects of weather conditions on fruit quality attributes, phenolic compounds and antioxidant capacity of chokeberry (Aronia melanocarpa) juice over three consecutive years were investigated. Total phenolic content and total flavonoids range were from 8834 to 11093 mg/L and from 6993 to 9710 mg/L, respectively. High variations and discrepancy during different growing seasons are due to the different air temperature, sunlight and rainfall rate. The highest concentrations of anthocyanins and phenolics were observed in fruits harvested in 2012, which is most likely due to the favorable weather conditions (temperature and bright sunshine hours). All chokeberry juices possess high antioxidant activity (12.9–14.6 mmol/L; 128–167 mmol/L). Strong correlation implies that flavonoids and non-flavonoids were the major contributors to the antioxidant capacity. This study indicates that although the examined properties vary considerably through the growing seasons (p≤0.05), chokeberry juices can serve as a good source of bioactive phytochemicals in a human diet.

【 授权许可】

Unknown