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FTIR spectra peak position of gelatin samples extracted using bromelain and zingibain at level of 20 (B20) and 5 (Z5) unit of enzymes/g of wet skin, respectively
| Band | Peak wavenumber (cm−1) | ||
|---|---|---|---|
| Control | B20 | Z5 | |
| Amide I | 1631.78 | 1629.85 | 1631.78 |
| Amide II | 1537.27 | 1541.12 | 1543.05 |
| Amide III | 1234.44 | 1234.44 | 1236.37 |
| Amide A | 3294.42 | 3302.13 | 3296.35 |
| Amide B | 2931.80 | 2937.59 | 2939.52 |
Control gelatin was extracted without enzyme pretreatment
