The first activities of the PhD thesis project are described. Firstly, the major bioactive compounds of Pleurotus ostreatus, namely: β-glucans, ergosterol, vitamin D2 and phenolics were evaluated. Secondly, a food grade extraction procedure for the recovery of β-glucans was developed by measuring the yield and antioxidant activity. β-glucan-rich extract was used as emulsifying agent for the encapsulation of an oxidisable compound. The stability of oil-in-water (O/W) emulsions was determined checking the variation of oil droplets size distribution over time. The left-over insoluble solids could be exploited as a source of vitamin D2 and ergosterol.
Le prime attività del progetto di tesi di dottorato sono descritte. In primo luogo, sono stati misurati i principali composti bioattivi di P. ostreatus, ovvero: β-glucani, ergosterolo, vitamina D2 e fenoli. Successivamente, è stata messa a punto una procedura di estrazione dei β-glucani misurando la resa e l'attività antiossidante. I β-glucani sono stati utilizzati come emulsionanti per l'incapsulamento di un composto ossidabile. La stabilità delle emulsioni olio-in-acqua (O/W) è stata determinata attraverso la variazione della distribuzione dimensionale delle gocce d’olio nel tempo. Il residuo di estrazione può essere utilizzato come fonte di ergosterolo e vitamina D2.
Production of Functional Ingredients Using Bioactive Compounds from Pleurotus Ostreatus / F. Gallotti - In: Proceedings of the XXIV Workshop on the Developments in the Italian PhD Research on Food Science, Technology and Biotechnology / [a cura di] V. Canuti, C. Dinnella, P. Domizio, G. Fia, L. Lencioni, E. Monteleone, M. Picchi, S. Spinelli, B. Zanoni. - Prima edizione. - [s.l] : Società Italiana di Scienze Sensoriali, 2019 Sep. - ISBN 9788894467901. - pp. 253-255 (( Intervento presentato al 24. convegno Workshop on the Developments in the Italian PhD Research on Food Science, Technology and Biotechnology tenutosi a Firenze nel 2019.
Production of Functional Ingredients Using Bioactive Compounds from Pleurotus Ostreatus
F. Gallotti
2019
Abstract
The first activities of the PhD thesis project are described. Firstly, the major bioactive compounds of Pleurotus ostreatus, namely: β-glucans, ergosterol, vitamin D2 and phenolics were evaluated. Secondly, a food grade extraction procedure for the recovery of β-glucans was developed by measuring the yield and antioxidant activity. β-glucan-rich extract was used as emulsifying agent for the encapsulation of an oxidisable compound. The stability of oil-in-water (O/W) emulsions was determined checking the variation of oil droplets size distribution over time. The left-over insoluble solids could be exploited as a source of vitamin D2 and ergosterol.File | Dimensione | Formato | |
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