| Title: | A new process for wine production by penetration of yeast in uncrushed frozen grapes |
| Author(s): | Tsakiris A; Koutinas AA; Psarianos C; Kourkoutas Y; Bekatorou A; |
| Address: | "Department of Oenology & Spirits Technology, Technological Educational Institution of Athens, Ag. Spiridonos Str, Egaleo, 12210 Athens, Greece" |
| DOI: | 10.1007/s12010-009-8881-8 |
| ISSN/ISBN: | 1559-0291 (Electronic) 0273-2289 (Linking) |
| Abstract: | "Different types of red and white wines were prepared by fermentation of the juice which was naturally separated from uncrushed frozen grapes during thawing (A) and from the residual juice by fermentation inside the berries (B). Yeast penetrated the skin of uncrushed grapes and fermented the content completely. The new types of wines were compared with wines prepared conventionally from the whole material of frozen grapes. Chemical and chromatographic analysis (gas chromatography (GC) and solid-phase microextraction-GC/mass spectrometry) showed similar profiles of the aroma volatiles but with significant quantitative differences among the new types of wines, which reflected to the differences observed during the sensory evaluations. The majority of identified compounds were esters, with higher amounts found in (A) wines due to the higher concentration of the must which was separated during thawing. The proposed process is new and of industrial interest for the production of different types of wines from the same raw material in one fermentation batch" |
| Keywords: | Female Fermentation Food Handling/*methods Freezing Humans Male Saccharomyces cerevisiae/chemistry/*metabolism Smell Taste Vitis/chemistry/*microbiology Volatile Organic Compounds/analysis/metabolism Wine/analysis/*microbiology; |
| Notes: | "MedlineTsakiris, Argyris Koutinas, Athanasios A Psarianos, Costas Kourkoutas, Yiannis Bekatorou, Argyro eng Evaluation Study 2010/02/13 Appl Biochem Biotechnol. 2010 Oct; 162(4):1109-21. doi: 10.1007/s12010-009-8881-8. Epub 2010 Feb 12" |
