Results and DiscussionGel strengthGel strength of cuttlefish skin gelatin gel incorporated with different phenolic compounds or extracts oxidized by laccase is depicted in Figure 1. Gels incorporated with oxidised phenolic compounds or extracts had the increases in gel strength when compared with the control (without addition of laccase and phenolic compounds/extracts) (p<0.05).Laccase more likely induced the polymerisation of gelatin molecules prior to gel setting. Laccase has been reported to induce protein cross-linking (Mattinen et al., 2005). Gelatin gel incorporated with oxidised gallic acid had the highest gel strength (211.45 g) (p<0.05), followed by that added with oxidised catechin. No differences in gel strength were noticeable between gels incorporated with oxidized ferulic acid, tannic acid and EKWE (p<0.05). Oxidized ECBE exhibited the lowest gel strengthening effect on gelatin but yielded the resulting gel with the increased strength, compared with the control (p<0.05).
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