Ozone-induced changes in the content of bioactive compounds and enzyme activity during storage of pepper fruits
| Autor: | Monika Sachadyn-Król, Barbara Chilczuk, Anna Jakubczyk, Monika Karaś, Małgorzata Materska, Irena Perucka, Izabella Jackowska |
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| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Antioxidant medicine.medical_treatment Flavonoid 01 natural sciences Polyphenol oxidase Analytical Chemistry chemistry.chemical_compound Ozone 0404 agricultural biotechnology Pepper medicine Food science chemistry.chemical_classification Oxidase test biology Chemistry fungi food and beverages 04 agricultural and veterinary sciences General Medicine 040401 food science Enzyme assay Food Storage Biochemistry Fruit biology.protein Guaiacol Quercetin 010606 plant biology & botany Food Science |
| Zdroj: | Food Chemistry. 211:59-67 |
| ISSN: | 0308-8146 |
| DOI: | 10.1016/j.foodchem.2016.05.023 |
| Popis: | This paper presents for the first time the results of investigations concerning the effect of treatment of whole pepper fruits with gaseous ozone and the refrigeration storage period conditions on pepper quality. The effects are reflected in changes in the flavonoid contents, the antioxidant activity of the phenolic compound fraction and the enzymes involved in phenylpropanoid metabolism. The investigations were carried out on a hot pepper fruit cultivar, Cyklon. It was found that the levels of a majority of flavonoids, in particular those of quercetin 3-O-rhamnoside and quercetin 3-O-rhamnoside-7-O-glucoside increased in the pericarp of fruits treated with ozone for 3h and stored for 20days (by 25% relative to the control). Simultaneously, reduced phenylalanine ammonia-lyase and tyrosine ammonia-lyase activity were noted, which implies slight degradation of enzymes caused by the ozone treatment and enhancement of the polyphenol oxidase and guaiacol oxidase activity involved in response to increased oxidative stress. |
| Databáze: | OpenAIRE |
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