Bio-Protection as an Alternative to Sulphites: Impact on Chemical and Microbial Characteristics of Red Wines

In wine, one method of limiting the addition of sulphites, a harmful and allergenic agent, is bio-protection. This practice consists of the early addition of microorganisms on grape must before fermentation. Non-Saccharomyces yeasts have been proposed as an interesting alternative to sulphite addition. However, scientific data proving the effectiveness of bio-protection remains sparse. This study provides the first analysis of the chemical and microbiological effects of a Metschnikowia pulcherrima strain inoculated at the beginning of the red winemaking process in three wineries as an alternative to sulphiting. Like sulphiting, bio-protection effectively limited the growth of spoilage microbiota and had no influence on the phenolic compounds protecting musts and wine from oxidation. The bio-protection had no effect on the volatile compounds and the sensory differences were dependent on the experimental sites. However, a non-targeted metabolomic analysis by FTICR-MS highlighted a bio-protection signature

Bio-protection in oenology by Metschnikowia pulcherrima: from field results to scientific inquiry

Finding alternatives to the use of chemical inputs to preserve the sanitary and organoleptic quality of food and beverages is essential to meet public health requirements and consumer preferences. In oenology, numerous manufacturers already offer a diverse range of bio-protection yeasts to protect must against microbiological alterations and therefore limit or eliminate sulphites during winemaking. Bio-protection involves selecting non-Saccharomyces yeasts belonging to different genera and species to induce negative interactions with indigenous microorganisms, thereby limiting their development and their impact on the matrix. Although the effectiveness of bio-protection in the winemaking industry has been reported in numerous journals, the underlying mechanisms are not yet well understood.The aim of this review is to examine the current state of the art of field trials and laboratory studies that demonstrate the effects of using yeasts for bio-protection, as well as the interaction mechanisms that may be responsible for these effects. It focuses on the yeast Metschnikowia pulcherrima, particularly recommended for the bio-protection of grape musts

The nation branding opportunities provided by a sport mega-event: South Africa and the 2010 FIFA World Cup

Over the past decade there has been a growing awareness of the significant impact that hosting sport mega-events can have on a nation[U+05F3]s brand. This paper discusses the context of nation branding and the role of sport mega-events in generating a nation branding legacy. A nation brand is not owned or controlled by a single organisation, but rather jointly developed and delivered by a network of public and private sector organisations. The examination of both event and brand stakeholder perceptions and experiences post the event was therefore identified as an important research area. The case of South Africa and the 2010 FIFA World Cup was selected as improving the brand image was clearly stated as an aim for the host nation. The paper is based on a qualitative study that featured in-depth interviews conducted with definitive stakeholders from the public and private sectors (. n=8), within two of the major host cities of Johannesburg and Cape Town that took place two years post the event. The paper details the perceptions, experiences and reflections of these stakeholders relating to the branding opportunities and the legacy from the event and the degree to which these were leveraged. The paper contends that there are significant branding opportunities for nations beyond merely publicity, brand awareness and short-term perception changes. Greater knowledge and understanding of a brand can be developed through the experiences and engagement of visitors, citizens and members of the international business community, leading to the establishment of a more authentic brand image. Furthermore, there is also the opportunity to use these new image perceptions to position the nation brand for competitive advantage in tourism as well as business and investment sectors. Two key influencing factors of the nation branding legacy were identified, namely the media (including traditional and new media) and the role of local citizens. The discourse surrounding leveraging of legacies is furthered and supported, as it is clear that the success and legacy of the mega-event are a result of strategic activities of stakeholders. A nation branding legacy is therefore a combination of the opportunities provided by the sport mega-event and the strategic intention and activities of stakeholders

Centrality in networks of geographically proximate firms and competitive capabilities

We examine how a firm's centrality within a network of geographically proximate firms affects its competitive capabilities. Our study of the total population of one Spanish cluster of fishing firms shows that the effects of centrality on a firm's competitive capabilities are contingent on the effects of two relational characteristics of its direct ties: strength and degree of cognitive cohesion. Specifically, our results indicate that the centrality of a firm within the cluster network enhances its competitive capabilities as the strength of its direct ties increases. Further, firms can capture the value of centrality for enhancing competitive capabilities with a combination of strong (or weak) direct ties and low (or high) in degree of cognitive cohesion. We contribute to the network and strategy literatures by reconciling conflicting results with regard to the strategic benefits of a firm's centrality in a cluster and the relational characteristics of its direct ties

The professional service firm (PSF) in a globalised economy: A study of the efficiency of securities firms in an emerging market

This study explores the efficiency of securities firms in Turkey and offers conceptual and managerial insights utilizing data envelopment analysis. Through a sample of local and foreign owned securities firms in Turkey, we examine the impact of liabilities of foreignness (LOF) and localness (LOL) upon knowledge intensive firm efficiency in an emerging market economy. We have extended this approach through our consideration of liability associated with market globalness (LOMG). Our findings indicate the importance of size for firm efficiency with bank affiliation and foreign ownership also having positive effects on efficiency. Our study makes a contribution conceptually, methodologically and empirically to a growing literature on emerging economies. We also make a valuable addition to the limited empirical work conducted on the securities industry to date. Finally, through our contextualization of Turkish securities firms as professional services firms (PSFs), our research extends the narrow focus on law and accounting which currently dominates the burgeoning research strand on PSFs

Influence of Institutional Differences on Firm Innovation from International Alliances

This paper explores the contribution of the institutional perspective in understanding firm innovation returns from international alliances. It argues that formal and informal national institutions are of different nature, and give rise to explicit and tacit differences respectively between alliance partners. Partners exhibit different attitudes and abilities to negotiate and address such differences in leveraging the innovation potential of international alliances. As a result, we expect such differences to have distinct effects on partners' innovation performance: a) the effect of informal institutional differences is approximating sigmoid (S-shaped), with innovation performance slightly increasing first, then improving further and finally reaching a flattening plateau as informal institutional difference between partners increase; and b) the effect of formal institutional differences resembles an inverted U. Support is provided for both our contentions in a longitudinal sample of 110 UK biopharmaceutical firms. The paper contributes to existing understanding of firm innovation performance from international alliances, and broadly, to the management of internationalization in alliance portfolios