Polyphenolic Content and Color of Seedless and Seeded Shade Dried Chinese Raisins

29 grape cultivars, of seeded and seedless raisins from black, reddish-brown and yellowish-green grape varieties were examined to determine the relationship between grape color, seeded status and raisin phenolic content. The raisins were analyzed for phenolic profile, total phenolic (TP) and flavono...

Full description

Saved in:
Bibliographic Details
Published in:FOOD SCIENCE AND TECHNOLOGY RESEARCH 2016, Vol.22(3), pp.359-369
Main Authors: Shao, Dongyan, Zhang, Lijuan, Du, Shuangkui, Yokoyama, Wallace, Shi, Junling, Li, Nan, Wang, Jixun
Format: Article
Language:English
Subjects:
antioxidant capacity
Antioxidants
Color
Flavonoids
Food processing
Grapes
Perception
polyphenol
Raisin
Raisins
seeded status
Shades
Vitaceae
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:29 grape cultivars, of seeded and seedless raisins from black, reddish-brown and yellowish-green grape varieties were examined to determine the relationship between grape color, seeded status and raisin phenolic content. The raisins were analyzed for phenolic profile, total phenolic (TP) and flavonoid contents (TF), and antioxidant activities (DPPH, ABTS and FRAP). We found that despite the perception that dark colored raisins, contain higher levels of polyphenolic antioxidants, only seedless raisins from black grapes were higher in TP. Black raisins exhibited significant higher values of TP and FRAP activity than reddish-brown and yellowish-green raisins. The values of TP, TF, DPPH, ABTS, and FRAP capacities for seeded raisins were higher than those of seedless samples. Raisins could be classified into three groups and some raisins differing in seed-bearing status or color were grouped together, indicating the antioxidant properties of raisins were not only determined by raisin color, but also by their seed-bearing status.
ISSN:1344-6606
1881-3984
DOI:10.3136/fstr.22.359