University of Avignon

About: University of Avignon is a education organization based out in Avignon, Provence-Alpes-Côte-d'Azur, France. It is known for research contribution in the topics: Population & Speaker recognition. The organization has 1526 authors who have published 3766 publications receiving 88928 citations.

Introduction: Old World strategies against New World competition in a globalising wine industry

Abstract: Purpose – This introductory paper aims to place the contributions to this special issue within the context of the recent impact of globalisation on the wine industry, characterised by rapidly growing and evolving international markets, the expansion of New World wines on international markets, and the response of Old World rivals to New World competition.Design/methodology/approach – This paper examines the new competitive environment in the wine industry created by globalisation and outlines the way in which the authors of the papers in this special issue have contributed to an understanding of that environment.Findings – This paper reflects a renewed academic interest in winemaking, one of the most dynamic and rapidly developing agricultural sectors.Originality/value – The paper hightlights how the authors of the papers in this special issue have contributed to an understanding of this new competitive environment.

Ultrasound-assisted extraction of clove buds using batch- and flow-reactors: A comparative study on a pilot scale

Abstract: This study will assess the efficiency of both batch and flow ultrasonic reactors (20 L in 45 min) in carrying out the ultrasound-assisted extraction of dry clove buds and compare these more recent methods with classic maceration. Flow ultrasound-assisted extraction was carried out in a new multi-horn reactor working in continuous flow mode (450, 900, 1350 mL/min) and at high power density (about 700 W/L vs 18 W/L in batch). The specific energy input was a slightly lower in flow procedure 47.2 kJ/L vs 48.6 kJ/L in batch reactor. Total phenolic compound content ranged from 191 ± 1 to 215 ± 3 mg gallic acid equivalents/L of extract. The best results were obtained under flow ultrasound-assisted extraction operating at 1350 mL/min (highest phenolic content and best radical scavenging activity). Clove bud volatiles from hydroalcoholic extracts were separated and identified using hyphenated headspace gas chromatography and mass spectrometry. We herein show that the development of large-scale multiple transducer flow reactors operating at high power density allows noteworthy process intensification. Industrial relevance This piece of work was carried out thanks to the investment of Pernod-Richard Italia, an international company worldwide known in the field of liqueurs and wines. Considering the huge amount of plant extracts required by this type of production, only flow systems may be suitable for scaling up. The results of this investigation on pilot reactors pave the road for the set up of an industrial plant.