ผลิตภัณฑ์อาหาร เครื่องดื่ม อาหารสัตว์
เอกสารมาตรฐาน
สหรัฐอเมริกา
AOAC
2002.01
Measurement of α-Amylase Activity in White Wheat Flour, Milled Malt, and Microbial Enzyme Preparations: Ceralpha Assay
2005 (2023)
Final Action
9
AOAC 2023 Online Ch. 32.1.35A
Test portions are extracted with salt solution or buffer at room temperature or 40°C. Extracts are clarified by centrifugation or filtration, and diluted. Aliquots of diluted extract are incubated with the substrate mixture under defined conditions of pH, temperature, and time. The substrate is nonreducing end-blocked pnitrophenyl maltoheptaoside (BPNPG7) in the presence of excess quantities of thermostable α-glucosidase ...