Dietary Supplement Test Methods

10.1142/12643 ◽  
2022 ◽  
David (Dajing) Ji ◽  
Darryl Sullivan
2020 ◽  
Vol 4 (Supplement_2) ◽  
pp. 1832-1832
Vimal Patel

Abstract Objectives The aim of this study is to show suitability of 3M™ Petrifilm™ across various types of common multi ingredient finished dietary supplement products. Methods In present investigation, parallel analysis and suitability was conducted using gold standard methods prescribed under U.S. Pharmacopeia general chapter dietary supplement ⟨2021⟩/⟨2022⟩, US FDA's Bacteriological Analytical Manual (BAM), and AOAC using 3M™ Petrifilm™. Five commonly used tests in food and dietary supplement quality testing were deployed in this study, namely: Total Aerobic Microbial Count (TAMC), Total Yeast and Mold Count (TYMC), Escherichia coli, Staphylococcus aureus, and Coliforms. Dietary supplements selected for this investigation are from most common types of dietary supplements categories sold in US market i.e., multivitamin and mineral, protein, multi mineral, Prenatal, Vitamin D, and Omega 3 Fish oil. Three individual lots of each of the five products were tested to increase robustness of data. Acceptance criteria was set same as USP ⟨2021⟩/⟨2022⟩ requirements, that is to demonstrate a greater than 70% recovery in comparison to a control. Results AOAC using 3M™ Petrifilm™ results show recovery of >70% compared to control for all five test Total Aerobic Microbial Count (TAMC), Total Yeast and Mold Count (TYMC), Escherichia coli, Staphylococcus aureus, and Coliforms: Multivitamin and mineral product recovery ranges were between 79%–111%, Protein product recovery ranges were between 94%–104%, Multi mineral product recovery ranges were between 94%–107%, Prenatal product recovery ranges were between 74%–117%, Vitamin D product recovery ranges were between 93%–123%, and Omega 3 fish oil product recovery ranges were between 83%–101%. Conclusions We found that AOAC based 3M™ Petrifilm™ methods are suitable for selected major categories of dietary supplement finished products. All results from AOAC using 3M™ Petrifilm™ microbiological testing achieved >70% bioburden recovery in comparison to a control. We also found that AOAC using 3M™ Petrifilm™ provides consistent and comparable results to USP ⟨2021⟩/⟨2022⟩/FDA's BAM results for the same samples as well. Funding Sources Reliance Vitamin.

2001 ◽  
Vol 120 (5) ◽  
pp. A586-A587
L BEST ◽  
S JO ◽  
V LOO ◽  

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
SH Dong ◽  
D Nikolic ◽  
C Simmler ◽  
F Qiu ◽  
RB van Breemen ◽  

1990 ◽  
Vol 64 (03) ◽  
pp. 478-484 ◽  
Thomas Exner ◽  
Douglas A Triplett ◽  
David A Taberner ◽  
Margaret A Howard ◽  
E Nigel Harris

SummarySix lyophilized plasma samples were sent to 20 “expert” laboratories for assessment of lupus anticoagulant (LA). Four samples contained pooled LA of graded potency mixed with aged normal plasma. One contained LA plus cephalin phospholipid and one contained a nonspecific venom anticoagulant. Sixteen methods were used overall with some participants using up to 8 methods. Results were scored in regard to the known potencies of LA in the samples and other known induced defects.Activated partial thromboplastin time (APTT) tests used by most participants for preliminary screening were relatively sensitive, but non-specific. Platelet or phospholipid neutralization procedures (PNP) appeared to be sensitive and specific but showed a non-linear response to increased LA content. Kaolin clotting time (KCT) tests showed the most sensitive response to increased LA content but the weaker LA were not scored as abnormal by most laboratories as the samples may have contained platelet fragments. Other commonly used tests such as the tissue thromboplastin inhibition (TTI) test and the dilute Russell’s viper venom test (DRVVT) were carried out somewhat inconsistently. The variability in performance of tests in different laboratories indicates that standardization of methodology is urgently required.Generally it seemed that most clotting tests were “bypassed” by the addition of phospholipid to a known LA-positive sample in apparently direct proportion to their sensitivity. Sample preparation, especially prevention of contamination with activated platelets is a vital preliminary part in the assay of LA.

2019 ◽  
A Girme ◽  
G Saste ◽  
S Pawar ◽  
R Singh ◽  
L Hingorani

TAPPI Journal ◽  
2011 ◽  
Vol 10 (7) ◽  
pp. 29-34

Cracking at the fold is a quality defect sometimes observed in coated paper and board. Although tensile and compressive stresses occur during folding, test methods to measure the compressive strength of a coating have not been available. Our objective was to develop a method to measure the compressive strength of a coating layer and to investigate how different mineral coatings behave under compression. We used the short-span compressive strength test (SCT) to measure the in-plane compressive strength of a free coating layer. Unsupported free coating films were prepared for the measurements. Results indicate that the SCT method was suitable for measuring the in-plane compressive strength of a coating layer. Coating color formulations containing different kaolin and calcium carbonate minerals were used to study the effect of pigment particles’ shape on the compressive and tensile strengths of coatings. Latices having two different glass transition temperatures were used. Results showed that pigment particle shape influenced the strength of a coating layer. Platy clay gave better strength than spherical or needle-shaped carbonate pigments. Compressive and tensile strength decreased as a function of the amount of calcium carbonate in the coating color, particularly with precipitated calcium carbonate. We also assessed the influence of styrene-butadiene binder on the compressive strength of the coating layer, which increased with the binder level. The compressive strength of the coating layer was about three times the tensile strength.

TAPPI Journal ◽  
2009 ◽  
Vol 8 (6) ◽  
pp. 24-28

TAPPI test T811 is the specified method to ascertain ECT relative to box manufacturer’s certification compliance of corrugated fiberboard under Rule 41/ Alternate Item 222. T811 test sample heights were derived from typical board constructions at the time of the test method’s initial development. New, smaller flute sizes have since been developed, and the use of lighter weight boards has become more common. The T811 test method includes sample specifications for typical A-flute, B-flute, and C-flute singlewall (and doublewall and triplewall) structures, but not for newer thinner E-flute or F-flute structures. This research explores the relationship of ECT sample height to measured compressive load, in an effort to determine valid E-flute and F-flute ECT sample heights for use with the T811 method. Through this process, it identifies challenges present in our use of current ECT test methods as a measure of intrinsic compressive strength for smaller flute structures. The data does not support the use of TAPPI T 811 for ECT measurement for E and F flute structures, and demonstrates inconsistencies with current height specifi-cations for some lightweight B flute.

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