Wine Microbiology: Science and TechnologyThis volume applies an inductive experimental approach to recognize, control and resolve the variables that effect the wine-making process and the quality of the final product - focusing on the grape variety-yeast interaction controversy. It contains over 300 drawings, photographs and photomicrographs that illustrate the diagnostic morphology of wi |
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Results 1-5 of 78
Page 30
... sample itself. On the other hand, although the diverse physical and chemical composition of the various elements in a cell does not effect absorption of light (since the specimen appears uniformly transparent); it does create a ...
... sample itself. On the other hand, although the diverse physical and chemical composition of the various elements in a cell does not effect absorption of light (since the specimen appears uniformly transparent); it does create a ...
Page 37
... sample material in a drop of distilled water, previously placed on the slide. Fig. 9c). Sampling of the matter to he observed is car. rted out in such a way as to avoid contaminating it. In the photo the operator is taking a sample from ...
... sample material in a drop of distilled water, previously placed on the slide. Fig. 9c). Sampling of the matter to he observed is car. rted out in such a way as to avoid contaminating it. In the photo the operator is taking a sample from ...
Page 38
... sample material on the loop is placed on the slide. The loop is used to mix it into the drop of filtered water or physiological solution previously placed on the slide. Liquids can be more easily sampled with a pipette, (sterilized if ...
... sample material on the loop is placed on the slide. The loop is used to mix it into the drop of filtered water or physiological solution previously placed on the slide. Liquids can be more easily sampled with a pipette, (sterilized if ...
Page 40
... sample is too cloudy. If instead, the material to be observed is an opaque solid (vine branches, leaves, etc.), then it will have to be sectioned into very, very thin transparent slices. If three-dimensional observation is desired, you ...
... sample is too cloudy. If instead, the material to be observed is an opaque solid (vine branches, leaves, etc.), then it will have to be sectioned into very, very thin transparent slices. If three-dimensional observation is desired, you ...
Page 45
... sampling tube with one mL of Fink and Kühles methylene blue solution. After 5-10 minutes, a sample is examined under the microscope without heat-fixing it. All the colorless, partially colored (live, V) and intensely colored cells (dead ...
... sampling tube with one mL of Fink and Kühles methylene blue solution. After 5-10 minutes, a sample is examined under the microscope without heat-fixing it. All the colorless, partially colored (live, V) and intensely colored cells (dead ...
Contents
17 | |
27 | |
35 | |
49 | |
Sterilization techniques | 85 |
The antiseptic effect of sulfur dioxide | 99 |
Correlation between pH buffer power oxidationreduction potential microbiological stabilization and the acid taste of wine | 125 |
Alternative techniques to the use of sulfur dioxide for microbiological stabilization | 143 |
Microbiological monitoring of must and wine | 283 |
The use of selected yeast strains | 291 |
The formation of organoleptically important metabolites | 327 |
The production of acetic acid by yeasts | 339 |
Biological degradation of malic acid | 357 |
Microbiological control of concentrated musts and sulfured musts | 379 |
The microbiological control of wine during storage | 389 |
Methodology for the microbiological stabilization of musts and wines | 409 |
Cleansing and sanitation | 157 |
Taxonomy biology cytology and morphology of wineassociated yeasts | 167 |
Isolation selection and purification of wine yeasts | 193 |
Oenological characteristics of selected yeast strains and their genetic improvement | 219 |
Current and prospective microbiological topics in enology | 241 |
The metabolism of sugars and nitrogen by yeast | 253 |
The oxygen requirement for wine yeast | 269 |
Microbiological stabilization of wine through thermal treatment Pasteurization and hot bottling | 425 |
Microbiological stabilization through filtration | 433 |
Microscopic and chemical assays used for the identification of sediment Techniques used to determine a wines propensity to develop turbidity | 453 |
Bibliography | 461 |
Index | 483 |
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Common terms and phrases
acetaldehyde acetic acid bacteria activity addition agar alcoholic fermentation antiseptic aromatic bottling cells/mL characteristics clarified colonies color compounds concentration considered containing decrease degradation Delfini diluted dose effect enological enzymes ethyl eyepiece factors fatty acids favor filter filtration formation free-run genetic glucose glycerol grape growth H2SO heat hydrogen increase incubation inhibition initial inoculated inoculum juice lactic acid bacteria Leuconostoc liquid malic acid malolactic bacteria malolactic fermentation medium membrane mentation metabolic mg/L microbial microbiological stabilization micron microorganisms microscope molecular SO2 º º occur odor organoleptic oxidation oxygen Pasteur Petri plate phase preparation presence produced pyruvic acid quantity resistant Saccharomyces cerevisiae sample Schizosaccharomyces selected yeast strains slide solution species spoilage spores starter culture sterile sugar sulfur dioxide surface suspension Table tank tartaric acid techniques temperature tion tive treatment vegetative cells vinification volatile acidity wine yeasts yeast cells