T/GSJX 001-2019 The water used for brewing baijiu in Gansu province
T/GSJX 001-2019 The water used for brewing baijiu in Gansu province
Basic Information
Scope
Scope: Water used for the production of liquor in Gansu Province, including: water for brewing, water for dilution of alcohol concentration; Main technical content: 3. Terms and definitions. The following terms and definitions apply to this document. 3.1 Brewing water. Water used in the processes of steeping, soaking, mixing ingredients for making starter, culturing microorganisms, measuring water, infiltration, steaming, gelatinization, and saccharification of raw materials for brewing liquor. 3.2 Dilution water. Water used for diluting alcohol from high to low concentrations. 4. Water source selection 4.1 Tap water. Water that meets the requirements of GB 5749 after undergoing artificial sedimentation, filtration, and disinfection processes from surface water or groundwater. 4.2 Surface water. Water collected from atmospheric precipitation, including river water, lake water, and pond water. 4.3 Groundwater. Water collected from surface water through infiltration into the ground. 5. Water quality requirements 5.1 Brewing water quality requirements 5.1.1 Appearance: Colorless and transparent, with no suspended matter or sediment. 5.1.2 Taste: When the water is heated to 20-30°C and tasted, it should have a refreshing aroma, a pure and slightly sweet taste, and no salty, bitter, muddy, chlorine, or irony odors. 5.1.3 Physical and chemical requirements: Comply with the provisions of Table 1. Table 1: Physical and chemical indicators of brewing water Item Requirement pH 5.0-8.5 Total hardness (as CaCO3), mg/L ≤450 Iron (as Fe), mg/L ≤0.01 Residual chlorine (free chlorine), mg/L ≤0.05 5.1.4 Hygiene requirements: Comply with the provisions of GB 5749. 5.2 Dilution water quality requirements 5.2.1 Sensory and physical and chemical indicators: Comply with the provisions of Table 2. Table 2: Sensory and physical and chemical indicators Item Requirement Color, degree ≤5, no abnormal color Turbidity, NTU ≤1.0