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Bigger trials, run over longer stretches of time, are the obvious next step
Yes, improper storage such as exposure to temperature extremes or light can cause protein degradation, resulting in discoloration, cloudiness, or visible particles
Instead, a personalised approach based on nutritional screening (such as the BAPEN Malnutrition Universal Screening Tool), dietary assessment, and blood tests is more appropriate
For example, one guideline suggests trying ~1030% acetic acid in water for a stubborn basic peptide, or a few microliters of 1 N NaOH for an acidic peptide, then diluting to the required volume4
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