Antioxidant activity according to bioactive compounds content in dried pumpkin waste

Autor: Stajčić Slađana M., Pezo Lato L., Ćetković Gordana S., Čanadanović-Brunet Jasna M., Mandić Anamarija I., Tumbas-Šaponjac Vesna T., Vulić Jelena J., Travičić Vanja N., Belović Miona M.
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Journal of the Serbian Chemical Society, Vol 89, Iss 1, Pp 13-27 (2024)
Druh dokumentu: article
ISSN: 0352-5139
1820-7421
DOI: 10.2298/JSC230517043S
Popis: In this study freeze-drying and oven-drying (at 50 and 65 °C) were applied for the preparation of dried pumpkin waste. The effect of drying methods on physical properties (moisture content, water activity, hygroscopicity, water solubility, bulk and tapped density, flowability and colour), content of bioactive compounds (carotenoids and phenolics) and antioxidant activity were investigated. Also, the influence of one-year storage at –20 °C on the bioactive compounds content and the antioxidant activity of dried pumpkin waste was examined. Results indicated that drying method showed a significant impact on the investigated characteristics. Bioactive compounds content and antioxidant activity by DPPH test of freeze-dried were higher than of oven-dried pumpkin waste, while higher antioxidant activity in reducing power assay was determined by oven-dried pumpkin waste. An artificial neural network model was developed, for the anticipation of antioxidant activity according to bioactive compounds content (phenolics and carotenoids), in oven-dried (at 50 and 65 °C) and in freeze-dried pumpkin waste after one-year storage. These models showed good prediction properties (the r2 value during training cycle for output variables was 0.999). It was demonstrated that pumpkin waste is potentially an important source of bioactive compounds, which can be used after extraction in suitable forms in the development of functional food products.
Databáze: Directory of Open Access Journals
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