Search results for "making"

Indigenous yeast communities in the environment of ‘‘Rovello bianco’’ grape variety and their use in commercial white wine fermentation

2009

The indigenous yeast communities associated with several vineyard habitats were analysed. Wild yeasts were isolated, differentiated at strain level and identified. A phylogenetic tree based on partial 26S rRNA genes was constructed. The strains were characterized and the indigenous Saccharomyces cerevisiae GR1 was then used to carry out a vinification process and compared with a commercial yeast. Wines obtained were subjected to chemical and sensory analysis. The comparison between the two products highlighted differences due to the fer- menting strains employed. The vineyard environment was found to strongly influence the composition of yeast communities, thus, confirming the theory of ‘te…

Base Wine and Traditional Sparkling Wine Making Using Torulaspora delbrueckii Killer Yeasts

2020

The killer strains of Torulaspora delbrueckii can be used to improve the dominance of this yeast during must fermenta­tion. The present work analyzes its usefulness for traditional spar­kling wine making (base wine and cava). T. delbrueckii killer strain dominated base wine fermentation better than non-killer strains and produced dried wines. The foam ability of T. delbrueckii base wines was very low compa­red to that of Saccharomyces cerevisiae. Significant posi­tive correlations of foam parameters were found with the amounts of C4-C16 ethyl esters and proteins, and negative correlations with some antifoam alcohols. The organoleptic quality of T. delbrueckii base wines was considered inap­…

Biogenic amine determination in wine fermented in oak barrels: Factors affecting formation

2008

Changes in biogenic amines (histamine, putrescine, tyramine and cadaverine) were monitored during the industrial production of Tempranillo and Cabernet Sauvignon wines. The origin of these amines in relation to the presence of different lactic bacteria (indigenous or inoculated) during malolactic fermentation, while aging in oak barrel, and the correlations between amines and their corresponding amino acids were statistically evaluated. In this study we found that there was a greater increase in amines post malic acid depletion than during malolactic fermentation and that more amines were produced in wine of the Tempranillo variety. The total amino acid concentration was 1.6 times greater i…

Principal Parameters of Grape Ripening and Wine Fermentation

2008

Dynamics of Microbial Populations during Fermentation of Wines from the Utiel-Requena Region of Spain

1989

The dynamics of fungi, yeasts, and lactic acid bacteria during fermentation of four musts were studied. Fungi disappeared quickly in the fermenting must. The lactic acid bacteria population diminished during alcoholic fermentation, then they increased and performed malolactic fermentation. Yeasts grew quickly, reaching maximum populations at different times depending on the vinification treatment.

Technological and molecular diversity of Lactobacillus plantarum strains isolated from naturally fermented sourdoughs.

2004

Thirty Lactobacillus (L.) plantarum strains, isolated from sourdough, were identified by biochemical tests as well as 16S rDNA sequencing and differentiated on the basis of technological properties, such as amylase, protease, phytase and antirope activities. These properties were shown to be widely differing among the strains, indicating a significant technological diversity. Genetic differentiation was achieved by restriction endonuclease analysis-pulsed field gel electrophoresis (REA-PFGE) that allowed the L. plantarum strains to be divided into 10 different genomic groups. Moreover, 32 different starters were employed in dough making experiments; each starter consisted of a single strain…

Commercial and financial policies in family firms: The small business growth management flight simulator

2000

An interactive learning environment (ILE) was built to reproduce the budgeting process of a small family-owned entrepreneurial firm and to capture how current decisions affect business growth in a longer time horizon. The ILE matches the accounting-related perspective through which spreadsheet-based budgets are drawn up, with the system dynamics (SD) view. Such a goal has been pursued through a connection of traditional Excel spreadsheets with POWERSIM SD models. Playing the SMALL BUSINESS GROWTH MANAGEMENT FLIGHT SIMULATOR allows one to learn how (a) to draw up a budget based on an SD perspective, (b) long-term goals may be affected by current decisions, (c) business/family survival and gr…

To Calculate or To Follow Others : How Do Information Security Managers Make Investment Decisions?

2019

Economic models of information security investment suggest estimating cost and benefit to make an information security investment decision. However, the intangible nature of information security investment prevents managers from applying costbenefit analysis in practice. Instead, information security managers may follow experts’ recommendations or the practices of other organizations. The present paper examines factors that influence information security managers’ investment decisions from the reputational herding perspective. The study was conducted using survey questionnaire data collected from 106 organizations in Finland. The findings of the study reveal that the ability and reputation …

Venture capitalists' decision-making in small equity markets: a case study using participant observation

2004

Despite significant academic research undertaken in the field of venture capital decision-making process, the dimension and maturity of equity market has not yet been considered as an important contextual factor. Aiming at developing an understanding on how venture capitalists (VCs) select early-stage projects in small equity markets, a pilot study using participant observation technique has been conducted in a Portuguese venture capital firm. The findings indicate that the decision-making process and the criteria used by VCs in this market context differ significantly from those used in the developed equity markets. Regarding the decision-making process as a whole, it appears to be more in…

Organisational transition challenges in the Finnish vocational education – perspective of distributed pedagogical leadership

2012

The article examines organisational challenges in the Finnish vocational education and training (VET) to support students’ lifelong learning pathways. Investigation of organizational challenges is done through the students’ transitions either within one school level or from one school level to another or to working life. For supporting the students’ learning pathways, it is argued here that specific attention has to be paid to collaborative practices of the personnel in order to guarantee the transitional fluency. This kind of collaboration is here called distributed pedagogical leadership. For examining the shared practices in the frame of distributed pedagogical leadership, the article in…