Additional file 1 of Immobilization of Thermomyces lanuginosus lipase in a novel polysaccharide-based hydrogel by a two-step crosslinking method and its use in the lauroylation of α-arbutin

Additional file 1. The spectra of 1H NMR, 13C NMR were supplied in Fig. S1, S2, and S3. The 13C NMR、1H NMR signals and structure of 6′-O-lauryl arbutin are shown in Fig. S1. Positive and negative ion mode mass spectra of purified arbutin mono lauroyl derivatives are shown in Fig. S2. The 6′-O-lauroylgeniposide structure and nuclear magnetic spectrum assignment are shown in Fig. S3.