Repozytorium publikacji - Politechnika Gdańska

Organic, semiorganic, and conventional “Hayward” kiwifruits, treated with ethylene for 24 h and stored during 10 days, were assessed by UV spectrometry, fluorometry, and chemometrical analysis for changes in selected characteristics of quality (firmness, dry matter and soluble solid contents, pH, and acidity) and bioactivity (concentration of polyphenols via Folin-Ciocalteu and p-hydroxybenzoic acid assays). All of the monitored qualitative parameters and characteristics related to bioactivity were affected either by cultivation practices or by ethylene treatment and storage. Results obtained, supported by statistical evaluation (Friedman twoway ANOVA) and chemometric analysis, clearly proved that the most significant impact on the majority of the evaluated parameters of quality and bioactivity of “Hayward” kiwifruit had the ethylene treatment followed by the cultivation practices and the postharvest storage. Total concentration of polyphenols expressed via p-hydroxybenzoic acid assay exhibited the most significant sensitivity to all three evaluated parameters, reaching a 16.5% increase for fresh organic compared to a conventional control sample.

Autorzy

• Yong Seo Park,
• Martin Polovka,
• Kyung-Sik Ham,
• Yang-Kyun Park,
• Suchada Vearasilp,
• prof. dr hab. inż. Jacek Namieśnik link otwiera się w nowej karcie ,
• Fernando Toledo,
• Patricia Arancibia-Avila,
• Shela Gorinstein