CASAZZA , Alessandro Alberto

The aim of this research was to study the recovery of phenolic compounds from grape seeds, by-products from winemaking industries, using ethanolic solid–liquid extraction. For such a purpose, the combined effects of the extraction time (9, 19 and 29 h) and the solid–liquid ratio (0.10, 0.20 and 0.30 gdwmL1), were investigated (where dw¼dry...

Response surface methodology was used to optimise the combined effects of malaxation time (t) and aqueous citric acid solution (CA) added at the beginning of the malaxation step on total polyphenols (TP) and o-diphenols (OD) content and the antiradical power (ARP) of the olive oil extracted from the Italian olive fruits of Coratina cultivar....

The adsorption of phenolic compounds from olive oil wastewater by commercial activated carbon was studied as a function of adsorbent quantity and temperature. The sorption kinetics and the equilibrium isotherms were evaluated. Under optimum conditions (8 g of activated carbon per 100 mL), the maximum sorption capacity of activated carbon...

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During the last years, olive industry wastes are considered as a potential source of extracts with antioxidant properties rich in polyphenols. The recovery of these added-value compounds can be interesting both for their beneficial properties and from an environmental point of view and several studies have been performed for the optimization...

The aim of this research was to investigate the effect of the addition of digested urban sludge on the growth medium of the microalga Chlorella vulgaris. The anaerobic digestion of biomass feedstock and/or the biodegradable fraction of wastes is widely recognized as a mature and cost-effective process for producing biogas, which is a valuable...

This study focused on the use of a non-conventional extraction technology by employing high-pressure hightemperature stirred reactor to extract polyphenols from grape skins. Extraction time (15–330 min) and temperature (30–150 C) were selected as independent variables, and their effects were studied. A preliminary kinetic study on polyphenols...

In this work, winery industry wastes were valorised through the extraction of high added value compounds (polyphenols), followed by thermal conversion of the exhausted solid residues. For this purpose, three different temperatures (623, 723 and 823 K) were tested. The increase of the heat treatment temperature resulted in a significant...

Chlorella vulgaris was cultivated in two different 2.0 L-helicoidal and horizontal photobioreactors at 5 klux using the bicarbonate contained in the medium and ambient air as the main CO2 sources. The influence of bicarbonate concentration on biomass growth as well as lipid content and profile was first investigated in shake flasks, where the...

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L'obiettivo dello studio è stato l'impiego di bicarbonato di sodio come fonte alternativa di carbonio in colture di Chlorella vulgaris, usualmente realizzate con la sola CO2. La microalga è stata inoculata in beuta e fatta crescere per 15 giorni in colture batch in presenza di NaHCO3 (0.2, 0.4 e 0.8 g/L), mantenendola in sospensione mediante...