IRIS Institutional Research Information System - AIR Archivio Istituzionale della Ricerca

IRIS è il sistema di gestione integrata dei dati della ricerca (persone, progetti, pubblicazioni, attività) adottato dall'Università degli Studi di Milano.

AIR nasce in UNIMI nel 2006 con lo scopo di raccogliere, documentare e conservare le informazioni sulla produzione scientifica dell'Università degli Studi di Milano e costituisce di fatto l'Anagrafe della ricerca dell'Ateneo.

The aim of this study was to develop a value chain approach to address the need for sustainable vitamin D2 food sources. A combined process of UV-irradiation and air-drying was used to produce a Pleurotus ostreatus powder with a target amount of vitamin D2 as an ingredient for functional foods. The kinetics of vitamin D2 degradation was studied as a function of water activity (aw) in the range 0.11–0.75 at 30 °C, and temperature in the range 20–40 °C, at aw 0.32. The Guggenheim–Anderson–de Boer equation was applied to model experimental data of moisture content as a function of aw at 30 °C, and the resulting monolayer water activity was found to correspond to the aw level of 0.45. During storage under different environmental conditions, vitamin D2 degradation followed first-order kinetics. The rate constants ranged from 0.00308 to 0.0121 d−1 at aw 0.11 and 0.75 at 30 °C, respectively. The Arrhenius equation was applied to calculate the activation energy for vitamin D2 degradation at aw 0.32, which resulted 37.6 kJ/mol. The kinetics data obtained can be used as a basis to design the best formulation strategy to deliver this vitamin with functional foods.

Kinetic study of vitamin D2 degradation in mushroom powder to improve its applications in fortified foods / D. PEDRALI, F. GALLOTTI, C. PROSERPIO, A. PAGLIARINI, V.A. LAVELLI. - In: LEBENSMITTEL-WISSENSCHAFT + TECHNOLOGIE. - ISSN 0023-6438. - 125(2020 May), pp. 109248.1-109248.7.

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