Figure 6
From: Understanding hyaluronic acid induced variation of water structure by near-infrared spectroscopy

The first two principal components of the spectra of 100 mg/mL HA solutions at different temperatures extracted by PCA: the loadings (a1, a2), scores (b1, b2). The first principal component accounts for 99.8% of the total variance and the second principal component accounts for 0.16% of the total variance.