Effect of air flow rate on the polyphenols content and antioxidant capacity of convective dried cactus pear cladodes (Opuntia ficus indica)

被引:24
|
作者
Gallegos-Infante, Jose-Alberto [1 ]
Rocha-Guzman, Nuria-Elizabeth [1 ]
Gonzalez-Laredo, Ruben-Francisco [1 ]
Reynoso-Camacho, Rosalia [2 ]
Medina-Torres, Luis [3 ]
Cervantes-Cardozo, Veronica [1 ]
机构
[1] Inst Tecnol Durango, Dept Ing Quim & Bioquim, Durango 34080, Dgo, Mexico
[2] Univ Autonoma Queretaro, Fac Quim, Dept Invest & Posgrado Alimentos, Ctr Univ, Queretaro, Qro, Mexico
[3] Univ Nacl Autonoma Mexico, Fac Quim, Dept Ingn Quim, Mexico City, DF, Mexico
关键词
antioxidant activity; air flow rate; cladodes; opuntia; polyphenols; FRUIT; INHIBITION; OXIDATION; EXTRACT; PEROXIDATION; SPP;
D O I
10.1080/09637480802477691
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
The interest in nopal has encouraged the use of dehydration; there are few studies about the effect of process parameters on the nopal polyphenol content and antioxidant activity. The objective of the present work was to evaluate the effect of air-drying flow rates on the amount and antioxidant capacity of extracts of Opuntia ficus indica cladodes. Nopal was dried at 45 degrees C and air flow rates of 3 and 5 m/sec. Samples were analyzed for moisture, total polyphenol, flavonoid, and flavonol contents, chain-breaking activity, inhibition of low-density lipoprotein and deoxyribose oxidation. Nopal drying at an air flow rate of 3 m/sec showed higher values of phenols, flavonoids and flavonols. The best value of low-density lipoprotein inhibition and deoxyribose was found at 1,000 mu g/ml. The air flow rate affected the amount of polyphenols and the OH radical scavenging, but did not modify the chain-breaking activity and the low-density lipoprotein inhibition activity.
引用
收藏
页码:80 / 87
页数:8
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