ผลิตภัณฑ์อาหาร เครื่องดื่ม อาหารสัตว์
เอกสารมาตรฐาน
สหรัฐอเมริกา
AOAC
2012.24
Flavanol and Procyanidin (by Degree of Polymerization 1–10) of Chocolate, Cocoa Liquors, Powder(s), and Cocoa Flavanol Extracts: Normal-Phase High-Performance Liquid Chromatography
2012 (2023)
15
AOAC 2023 Ch. 31.5.14
Chocolates, cocoa liquors, and cocoa powders are first extracted with hexane to remove their lipid components prior to extraction of flavanols and procyanidins. Flavanols and procyanidins (DP 1–10) are then extracted from these defatted materials and directly from cocoa extracts with an acidified aqueous acetone solvent system (acetone–water–acetic acid; AWAA) ...