Term | Definition |
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Papain | A proteolytic enzyme obtained from the latex of papaya used by brewers to increase the stability of their beer.
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Pasteurization | Heating of beer to 60-79C/140-174F to stabilize it microbiologically. Exposure of coldest point in packaged beer to 140F or 60C., for one Unit (PU) minute.
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Peptize | To bring into colloidal solution.
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Peptonize | To digest or dissolve by a proteolytic ferment.
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pH | The negative logarithm of the hydrogen ion concentration. pH values range from 0 to 14, below 7 being the acid range and above 7 the basic range.
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Phenolic | Flavor and aroma of medicine, plastic, Band-Aids, smoke, or cloves; caused by wild yeast or bacteria, or sanitizer residue.
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Pitch | To add yeast to wort.
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Plato, degrees | Expresses the specific gravity as the weight of extract in a 100 gram solution at 64F (17.5C). Refinement of the Balling scale.
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Precipitate | To separate in solid form, as from a solution. A substance separated from a solution.
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Primary Fermentation | The initial fermentation activity marked by the evolution of carbon dioxide and Krausen. Most of the total attenuation occurs during this phase.
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Priming | The method of adding a small amount of fermentable sugar prior to bottling to give the beer carbonation, often results in some small final fermentation as well.
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Protease | Proteolytic enzyme which breaks down high molecular weight proteins into lower molecular weight. Proteases in malt are active during the protein rest at 40C.-55C. in the mash. Commercial proteases of plant, fungi, or bacterial origin are used in the brewhouse to supplement malt protease and more prominently in the cellar to chillproof the beer.
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Protein | Any one of a class of naturally occurring compounds containing carbon, hydrogen, oxygen, nitrogen, often sulfur, phosphorus, occasionally iron and a few other elements. They are essentially very complex combinations of amino acids and are constituents of all living cells, both animal and vegetable.
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Pub | An establishment that serves beer and sometimes other alcoholic beverages for consumption on premise. The term originated in England and is the shortened form of "public house".
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Publican | The owner or manager of a pub.
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