Figure 1

Spectral characteristics of major volatiles during strawberry spoilage.
(a) Spectral peaks of ethanol in the range of 2830–3040 cm−1; (b) Spectral peaks of ethanol in the range of 1000–1120 cm−1 and 855–916 cm−1; (c) Spectral peaks of esters in the range of 1210–1280 cm−1; (d) Changes of spectral peaks areas with storage time.