The effects of preharvest chitosan treatments on antioxidant activities and bioactive
compounds of sunflower sprouts during cold storage were investigated. The sprouts were
watered with 0, 0.1, 0.5 and 1.0 % (w/v) chitosan solutions prior harvest 24 h. After harvest, the
sprouts were stored at 4 ± 1 °C for 9 d. The investigated parameters were visual appearance,
antioxidant activities such as ferric reducing antioxidant potential (FRAP), DPPH radical
scavenging (DFRS) activity and bioactive compounds including total phenols, flavonoids and
ascorbic acid concentrations. The visual appearance of the sprouts of all treatments was
maintained during storage at 4 ± 1 °C for 9 d. Preharvest chitosan treatment enhanced
antioxidant and DFRS activities, total phenols, flavonoids and ascorbic acid contents of the
sprouts, especially at 0.1 % chitosan. During the storage, 1.0 % chitosan treatment induced
FRAP, DFRS activity and all bioactive compounds rather than others treatments. These suggest
that preharvest chitosan treatment is an effective alternative improving nutritional quality of the
sunflower sprouts during cold storage.
Keywords
Sunflower sprouts, chitosan, elicitor
INTERNATIONAL JOURNAL OF AGRICULTURAL TECHNOLOGY
Published by : Association of Agricultural Technology in Southeast Asia (AATSEA) Contributions welcome at : http://www.ijat-aatsea.com
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