Proposed revision to NSF/ANSI 173 – Dietary Supplements (173i110r2)
The proposed is to amend NSF/ANSI Standard 173, Section 4.2 (Probiotics) to permit the use of well-validated alternatives to colony forming units (CFU) in reporting the number of viable bacteria in a probiotic ingredient or product. This change would recognize the utility of relatively new, direct methods of enumeration, such as those employing fluorescence-based flow cytometry, as opposed to the traditional plate count method. |
