Postharvest application of oxalic acid to preserve overall appearance and nutritional quality of fresh-cut green and purple asparagus during cold storage: a combined electrochemical and mass-spectrometry analysis approach
Abstract
The effect of oxalic acid (OA) treatment on visual properties and bioactive compounds of two green and onepurple cultivars of fresh asparagus was investigated during twelve storage days at 5 °C. Cold storage and OAtreatment positively affected the overall appearance of the investigated cultivars. Cut-end dehydration increased,all along the storage period, in all cultivars but, the negative effect of the storage, clear on controlsamples, was mitigated by OA. The most represented compounds in Grande and Vegalim cultivars were: quercetinrutinoside, feruloyl quinic acid and cumaroyl quinic acid. Cyanidin glucosyl rutinoside, cyaniding rutinosideand peonidin rutinoside were identified in Purple Passion cultivar. The bioactive compounds seemed tobe affected by storage but not by OA treatment. The sensor-biosensor system indicated that the antioxidantactivity is negatively affected by storage but not by OA. The decrease of antioxidant activity coincided with thereduction of ascorbic acid levels in all the cultivars.
Autore Pugliese
Tutti gli autori
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A. Barberis; M. Cefola; B. Pace; E. Azara; Y. Spissu; P.A. Serra; A.F. Logrieco; G. D'hallewin ; A. Fadda
Titolo volume/Rivista
Postharvest biology and technology
Anno di pubblicazione
2018
ISSN
0925-5214
ISBN
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Codici ASJC
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