Nutrients

Fermaid® K is a blended complex yeast nutrient that supplies ammonia salts (DAP), free amino acids (organic nitrogen derived from inactivated yeast), sterols, unsaturated fatty acids, key nutrients (magnesium sulfate, thiamin, folic acid, niacin, biotin, calcium pan­tothenate) and inactive yeast.For best results, Fermaid K should be used in conjunction with an appropriate yeast rehydration nutrient (such as Go-Ferm or Go-Ferm Protect) to assure proper nutrition of cultured yeast from rehydration through completed fermentation. Add 25 g/hL at 1/3 sugar depletion or in two doses; 12.5 g/hL at the end of lag phase and 12.5 g/hL at 1/3 sugar depletion.Fermaid K provides unsaturated fatty acids and sterols. These are important survival factors needed to maintain alcohol resistance and permease activity. They also help keep volatile acidity levels low.Nitrogen is needed for protein synthesis and to maintain cellular growth. Nitrogen from the alpha amino acids contained in Fermaid K is utilized much more efficiently than from the ammonia salts.The cell wall fractions in Fermaid K absorb short and medium chain fatty acids that are toxic to the yeast. They also provide nucleation sites to help keep the yeast in suspension.To UseFermaid K should be mixed with room temperature water before adding to an active fermen­tation to avoid CO2 release and overflowing of tanks or barrels. The amount of water used is not critical. Simply add enough to make a slurry.StorageDated expiration. Store at 18°C(65°F). Once opened, keep tightly sealed and dry.Recommended Dosage1 g/gal    25 g/hL 2 lb/1000 gal

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Fermaid O is an Organic version of Fermaid K, using an organic source of nitrogen. The organic nitrogen is a superior form, resulting in better results! Organic Nitrogen results a better fermentation with more stable temperature levels. Off aromas and flavors are also decreased. Use 1.5g per gallon.

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A balanced blend of minerals, proteins, amino acids and vitamins to improve yeast activity during fermentation. Used to quicken or restart fermentation. Suggested dosage rate is 1.0 - 1.5 teaspoons per gallon.  

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Wyeast Brewer's Choice Yeast Nutrient is a custom blend of vitamins, minerals, and micronutrients required for yeast cells to carry out an orderly and complete fermentation from start to finish. A wort that is nutrient-deficient, or which has adequate nutrients but limited bioavailability to the cells, can experience inhibited yeast growth, disrupted or incomplete fermentations, inconsistent attenuation rates from batch to batch, and diminished cell viability. Supplemental nutrients are always beneficial, but especially valuable during yeast propagation and stressful fermentation conditions (e.g, high-adjunct worts, high-gravity fermentations). Contains: Proprietary blend of vitamins, minerals, inorganic nitrogen, organic nitrogen, zinc, phosphates and other trace elements. Dosage rate: 11 grams/ barrel of wort Usage: Dissolve in warm water. Add solution to kettle 10-15 minutes prior to end of boil. Stability: 1 year, stored in airtight container in cool environment

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Diammonium Phosphate stimulates yeast growth, and is a useful addition to yeast starters and wines lacking in natural nutrients, such as white wines and meads. Some winemakers add it to every fermentation. Use 1/2 to 3/4 gram per gallon.  Approximately 1/8 teaspoon per gallon.

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Go-Ferm Protect is a new formulation of Go-FermGo-Ferm Protect is a natural yeast nutrient that is added to the yeast hydration water before adding your selected yeast strain. Its complex formula provides your yeast with the proper sterols, unsaturated fatty acids and micronutrients needed to begin fermentation in optimal shape. The great thing about Go-Ferm Protect is that the proper nutrients and vitamins are introduced BEFORE the yeast is added to the must. This way 100% of the nutrients are available to your selected yeast strain and won't be stolen away by any indigenous yeast or bacteria that may be present in the must before your yeast can become established.New Advanced Formula!Go-Ferm Protect was created as a result of a multi-year study of problem fermentations by Lallemand and the National Agricultural Research Institute (INRA) in France. During this period, they looked at the adverse effects on the yeast from overripe fruit (>28 Brix), low nutrient levels, over clarification of the juice and poor fruit quality (Botrytis, rot, high bacteria count, insecticide and fungicide residue). Their research showed that musts deficient in sterols and unsaturated fatty acids made yeast more susceptible to ethanol toxicity (high alcohol), osmotic shock (high sugar), temperature and others stress factors. In response to this data they created the NATSTEP (NATural STErol Protection) process that incorporated sterols, unsaturated fatty acids, as well as vitamins and minerals into an advance yeast rehydration nutrient: Go-Ferm Protect.Go-Ferm Protect provides a combination of protective and nutritional benefits that ensure your yeast begins your fermentation in peak form! The best part is that if your fruit is in great shape then Go-Ferm Protect will simply help your yeast out that much more!Go-Ferm Protect does not contain any DAP, as DAP is harmful to the yeast during the rehydration process. GO-Ferm is usually used in conjunction with  Fermaid K yeast nutrient; where Go-Ferm Protect is used at yeast hydration then Fermaid K is added at the first signs of fermentation and again after 1/3 sugar depletion.To UseUse at a rate of 1.25 g Go-Ferm Protect per 1 g of yeast. A rough approximation of weight is 1 tsp = 3.2 grams. It is highly recommend using a scale to weigh the product for an accurate dose. It is not recommend relying on these rough conversions for accurate dosage rates.

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Yeast hulls are inactive yeast cells that absorb toxic yeast by-products that could be inhibiting fermentation.  Commonly used as a yeast energizer for a stuck or sluggish fermentation. Use 1/2 tsp per gallon.  Mix with distilled water and add to wine.

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Wyeast Wine Nutrient Blend is a custom blend of vitamins, minerals, and micronutrients essential for an orderly and complete fermentation. During the cell growth and metabolization of sugars that takes place in every fermentation, yeast cells require an array of trace elements, vitamins, and compounds that can be assimilated from their environment in order to carry out their basic functions of life. However, honey-based fermentations are deficient in many of these nutrients. Nutrient deficiency can lead to disrupted or incomplete fermentations, off-flavors and aromas, and diminished stability of the finished product. Supplementing your must with Wyeast Wine Nutrient Blend helps ensure high viability and health of your yeast population, which in turn helps ensure a rapid, complete, and successful fermentation with repeatable results. Contents: Proprietary blend of vitamins, minerals, inorganic nitrogen, organic nitrogen, zinc, phosphates and other trace elements. Wyeast Nutrient Blend contains DAP (Diammonium Phosphate). Dosage Rate: 1/2 tsp (2.2 g) per 5 gallons (19 L) of must (unfermented mead) Usage Directions: Dissolve Wyeast Nutrient in warm water prior to adding to must. Divide total volume evenly, each portion to be added over several alternating days. Add to must after pitching yeast, and over the next several days as determined by your nutrient addition plan. Degassing between nutrient addition days may be necessary to prevent foaming over. Shelf-Life: 1 year if stored in airtight container in a cool environment Size: Available in 1.5 oz (42 g) tubes

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Pharmaceutical grade dry agar for making plates and slants. 2 ounces will make up approximately 4000 ml of liquid agar.For lab use, use 12 grams to make 1 liter of solid agar, which is way more than even a big laboratory uses. It takes a very accurate scale to measure that out. Dissolve the agar slowly in the water or wort for a few minutes. Gently heat until a boil is achieved. Be very careful of not boiling over, if you do it's best to throw that boil out as your water to agar ratio is off and you will not get a good medium. Boil for a few minutes and then divide out to sterilize. 2 ounce package

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A blend of cellulose, nutrients, and yeast hulls added directly to the wine. Feeds, removes toxins and keeps ml in suspension. Mix with minimal water to dissolve and add to wine. Do not add to rehydration water. Use 1 gram per gallon of wine.

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Nutrient Vit EndTM is a specific inactivated yeast developed by the Lallemand research and development group. It has high bio-adsorptive properties for short and medium chain fatty acids and fungicides which can cause problem fermentations. Saturated fatty acids modify the yeast sugar transport capacity by interfering with the membrane sugar transport proteins. When used during fermentation it can help minimize the risk of sluggish or stuck fermentations. It can also be used to help restart a sluggish or stuck fermentation. It is OMRI listed. To Use: Suspend Nutrient Vit End in water, juice or wine and mix well before adding to juice or must. If using with a stuck or sluggish fermentation, allow to settle and rack off prior to restart. Storage: Store in a cool and dry environment below 25°C (77°F). Product shelf-life is 3 years from manufacturing date. Recommended for use with:  Inactivated yeast for sluggish and stuck fermentations Dosage: Juice/Must at the beginning of fermentation:  Use at a rate of 1.13 g Nutrient Vit End per gallon of Must/Juice. For Sluggish or Stuck wine: Use at a rate of 1.5 g Nutrient Vit End per gallon of Must/Juice. Note: when using with a stuck or sluggish fermentation allow to settle and rack off prior to restart.  

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Lysozyme inhibits lactic acid bacteria in your wine. Isolated from egg whites, it will degrade the cell wall of gram positive bacteria but will not affect yeast or Acetobacter.  

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