3.3.7. preparation-bred men created just like pure yeast with the number reaching the required 106tế cells/ml room fermentation. We proceed from the same tube-like enzymes transfer to test tubes containing 5 ml of environment room. Brewed in the condition usually within 24 h. Then proceed to pour into Spanish translation and incubated 45 mL erlen contained within 24 h – this step is called breeding level 1. Then we multiply the same level 2 level 1 Translation by pouring into 450 mL room (including the 225ml room and 225ml room of grapes), incubated for 24 hours. After annealing, we count the number of yeast and calculate the amount of room just like the need for translation into fermented stars for reaching 106 cells/ml room fermentation. The operation performed correctly, ensure sterile conditions, avoid other biological room. The room and room use grape breeding need sterilization techniques.3.3.8. the primary fermentation: sugar metabolism into wine thanks to the activity of the yeast, and make to make the biochemical reactions that came for the wine. Translate grapes mixed with yeast. Then on the average has fermented. Progress in fermented conditions 22 ± 200 c. With the fermentation time is about 7 days, when the Bx's ferment reached from 6 ÷ 7Bx. Need to track the condition of constant fermentation process to avoid the error. The operation performed is fast and accurate.• Changes in the primary fermentation processGrowth process of yeast:Before the fermentation process officially began, the yeast will use sugar and oxygen to get familiar environment, growth and increase in biomass to certain extent. When the process to balance phase, the amount of oxygen is missing, the yeast will convert to anaerobic fermentation of alcoholAdaptive phase: in this phase the cell get familiar with the environment, biomass has not increased much.The logarithm stage: this stage is very fast development, biomass increase rushing, accompanied by the strong changes of fermentationThe slow, gradual stages: growth rate declining, Yeast fermentation translation components rest at least, the fermentation is to accumulate more.The stable phase: the number of yeast cells does not increase anymore, reproductive speed by the speed die.The period of recession: dead rising fast speed, the speed of reproduction very little is therefore the amount of yeast cells.The process converts sugars into alcohol and acid:+ Aerobic respirationC6h12o6 + 6O2 6CO2 + 6H2O + > 674-cal+ Anaerobic respirationC6vH12O6 2CH3CH2OH + 2CO2 + >-33 calAt this time, after about 2 days of fermentation, the yeast to start fermentation and anaerobic products of the process. Alcoholic content and lactic acid, malic acid increased. Parallel to that process is the decrease of sugar plus Bx of fermentation. When the Bx decreased from 6 ÷ 7 (approximately 7 days) we will stop the main fermentation process and move on to the next phase. Data will be shown in the results section.3.3.9. Decanting residue: after the primary fermentation, we need decanting residue to prepare for the extra fermentation process later. We picked residue is pods floating on the surface, then poured into the jar fermenting fermentation preparation of new filler. Fast, accurate operation, avoid losses.3.3.10. extra: fermentation Is the process of annealing to create conditions for "nine". Malolactic fermentation occurs. Taste wines. The following wines decanting is given based on the average up new mem and proceed to ferment in a cool cabinet temperature conditions (8 ÷ 100 c). Fermentation time is 2 weeks. Monitor and ensure the fermentation conditions3.3.11. Filter: remove excess wine and leftover yeast. Preparing for the next process and improve the product. Filter the wine through filtration, cold conditions-specialized fabrics. Filter is finished we proceed through to the next phase to ensure limited VSV infection. The quick filter to proceed to the next process.3.3.12. Filling-bottling: presentation of products, easy maintenance. Vang was filling in glass bottles has been drying sterilization. Then dóng lid immediately. Quick operation, avoid cross-contamination and how close the cover paying attention not to use force to break the bottle, too.3.3.13. productsProducts to be exhibited in glass bottles 200 ml. norms corresponding to each type of Yeast fermentation (the yeast wet and dry yeast) I presented 2 bottles.Wine preservation• Each type of wine is preserved in a different ideal temperatures. • The ideal temperature for wine -Red wine: 15-20o C -White wine, pink: 9-12o C -Champagne, sparkling: 5-10o C • Absolutely avoid things -Not be marinated cold bottle of wine -Not alcohol too long in the refrigerator -Do not use the ice cube to do-Not to direct sunlight shining directly into the bottle of wine chilling wine -Not for ice wine Preserved in the refrigerator The preservation of wine in the refrigerator is the most common and simple. In conditions of low temperature chemical reactions occur more slowly make the oxidation is also slow. At the same time the low temperature in the refrigerator helps prevent the effects of the bacteria ferment sour wine-making.One thing to note the vital in preserving the wine after opening the lid as you should to bottles of wine horizontally instead of vertically as usual to the wine in contact with the Cork (with oak wood button bottle type). This will keep the button always wet. If the button gets dry, it will shrink and to reach the air in the bottle, the serious impacts to the taste of alcohol.Vacuum The vacuum is a way to prevent alcohol exposure to oxygen. This can help keep the wine longer, but do change the taste of wine.Don't get alcohol in places of high temperature The ideal temperature for wine to preserve is about 15-17 degrees C, so is dark, moist places, avoid sunlight as it may cause the temperatures to warm up and impact the taste of wine. In addition, at the current restaurant, people often use the rubber button to avoid a maximum air or nitrogen gas pump used to compress air for not flying into.Wine is best recommended for 3-4 hours after opening, if so long, when the alcohol reacts with the air, the odor will no longer reached the norm.The above methods are just stalling time broken wine rather than preventing alcohol is not broken. You should estimate the alcohol used in a packed and then poured the rest into smaller bottles, close the Cork back and put into the fridge is preserving the best wine.
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