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Effect of salicylic Acid treatment on postharvest quality, antioxidant activities, and free polyamines of asparagus.
MedLine Citation:
PMID:  21535788     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
The effects of salicylic acid (SA) on the quality and antioxidant activity of asparagus stored at 18 ± 2 °C were investigated by analyzing the color, chlorophyll, shear force, and the activity of antioxidant compounds such as ascorbic acid, phenolics, flavonoids, 1,1-Diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity ferric reducing antioxidant power (FRAP), and polyamines (PAs). The results showed that SA improved the color and maintained the chlorophyll, phenolic, flavonoid, and ascorbic acid content of asparagus. High concentrations of SA caused a deterioration in asparagus would harm to color and had no effect on shear force within 6 d. SA induced the maximum concentration of phenolics in postharvest asparagus, promoted the increase in total flavonoids before 6 to 9 d, affected the antioxidant activity positively as indicated by the resultant increase in FRAP concentration; however, SA was only active with regard to DPPH scavenging activity within 6 d of treatment. Spermidine (Spd) is the most common form of PA in asparagus, and free putrescine (Put) contents increased over the first 3 d following harvest and then decreased. Spd and Spm concentrations evolved in a similar way and decreased during storage. Higher Spd and Spm contents in the SA pre-treatment Put was inhabited and its peaks appeared later.
Authors:
Yunxiao Wei; Zhenfeng Liu; Yujing Su; Donghong Liu; Xingqian Ye
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Publication Detail:
Type:  Journal Article     Date:  2011-02-01
Journal Detail:
Title:  Journal of food science     Volume:  76     ISSN:  1750-3841     ISO Abbreviation:  J. Food Sci.     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-05-03     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0014052     Medline TA:  J Food Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  S126-32     Citation Subset:  IM    
Affiliation:
Authors are with Dept. of Food Science and Nutrition, Zhejiang Univ., Hangzhou 310029, China. Direct inquiries to author Ye (E-mail: psu@zju.edu.cn).
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