Fig. 2From: Release of cell wall phenolic esters during hydrothermal pretreatment of rice husk and rice strawUV autofluorescence of both neutral (a) and alkaline (b) RH and RS samples (untreated UT and pretreated PT). The numbers 1 and 2 represent RH samples and RS samples respectively. In a (neutral), only blue autofluorescence occurs, symptomatic of lignin and pCA. In b (alkali), the RH autofluoresces blue, whilst the RS autofluorescencence is turquoise/green symptomatic of tFA and associated moieties. Scale bar: 100 µmBack to article page