西北农业学报2025，Vol.34Issue(9)：1617-1628,12.DOI:10.7606/j.issn.1004-1389.2025.09.005
不同块茎大小及花青素含量的马铃薯品质及抗氧化特性比较
Comparison of Quality and Antioxidant Properties of Potatoes with Different Tuber Sizes and Anthocyanin Content
摘要
Abstract
Toenhance the utilization and evaluate the storage quality of colored potatoes,five purple-fleshed and five red-fleshed potato cultivars with anthocyanin distribution gradients ranging from 0％to 100％were selected for this study.Changes in anthocyanins,starch,reducing sugars,total phe-nols,total flavonoids,DPPH·scavenging capacity,and ferric reducing antioxidant power(FRAP)in these colored potatoes of different tuber sizes were analyzed at harvest and after 60 days of storage at 7℃.The results showed that as the anthocyanin distribution gradient increased,tubers weighing more than 200 g had higher anthocyanin content at harvest.For the same cultivar,tubers weighing more than 200 g had higher starch content and lower reducing sugar content compared to those weig-hing 0-50 g.Compared to cultivars with low anthocyanin distribution(e.g.,P0 and R0),0-15 g tubers that had high anthocyanin distribution(e.g.,P4 and R4)had higher total flavonoid content,DPPH·scavenging capacity and FRAP values.After 60 days of storage at 7℃,all colored potato cultivars and tuber sizes exhibited decreased starch content alongside increases in anthocyanins,reduc-ing sugars,total phenols,total flavonoid content,DPPH·scavenging capacity,and FRAP values.In summary,selecting colored potatoes with tubers weighing more than 200 g and having P2-P5 or R2-R5 anthocyanin distributions can effectively enhance anthocyanin extraction efficiency and pre-serve storage quality.Cultivars with high anthocyanin distribution in tubers weighing 0-15 g are suit-able as raw materials for extracting natural antioxidants due to their high antioxidant content and ac-tivity after harvest and storage.关键词
马铃薯/花青素/块茎大小/淀粉/抗氧化物/抗氧化活性Key words
Potato/Anthocyanins/Tuber size/Starch/Antioxidant/Antioxidant capacity引用本文复制引用
董宇,车雨晴,支欢欢,王舰,纳添仓..不同块茎大小及花青素含量的马铃薯品质及抗氧化特性比较[J].西北农业学报,2025,34(9):1617-1628,12.基金项目
青海省帅才科学家负责制项目(2023-NK-146). Qinghai Province Talented Scientist Leadership Program(No.2023-NK-146). （2023-NK-146）
