Design and synthesis of novel stilbene-hydroxypyridinone hybrids as tyrosinase inhibitors and their application in the anti-browning of freshly-cut apples

The effects of aurone on the yellowing of fresh-cut water chestnuts

“…Judging YD directly from the pictures of FCWCs during storage might be intuitive. Our pictures showed that 1.0 % aurone delayed the yellowing for at least 6 d. Chitosan ( Pen & Jiang, 2003 ), salicylic acid ( Peng & Jiang, 2006 ), citric acid ( Jiang et al, 2004 ), H 2 O 2 ( Peng et al, 2008 ), l -Cys ( Li et al, 2017 ), eugenol ( Teng et al, 2020 , Zhu et al, 2022 ), high-pressure CO 2 ( Kong et al, 2021 ), and vit E ( Ye et al, 2022 ) only delayed the browning for at most 3 d. Ascorbic acid could not inhibit the yellowing ( Song et al, 2019a ). Ferulic acid and hydrogen-rich water only delayed the yellowing for at most 3 d ( Li et al, 2022 , Song et al, 2019a ).…”

“…Anaerobic respiration occurred in FCWCs, and alcohol was produced under short-term anoxia and reduced the edible quality of FCWCs ( You et al, 2012 ). Teng et al and Zhu et al investigated the effect of eugenol emulsions on the browning of FCWCs ( Teng et al, 2020 , Zhu et al, 2022 ). Eugenol is expensive and difficult to extract ( Teng et al, 2020 , Zhu et al, 2022 ).…”

“…Teng et al and Zhu et al investigated the effect of eugenol emulsions on the browning of FCWCs ( Teng et al, 2020 , Zhu et al, 2022 ). Eugenol is expensive and difficult to extract ( Teng et al, 2020 , Zhu et al, 2022 ). Browning of FCWC was reduced by high-pressure CO 2 ( Kong et al, 2021 ).…”

“…High pressure might damage tissues of FCWCs easily ( Kong et al, 2021 ). These researches have suggested that peroxidase (POD) and phenylalanine lyase (PAL) also catalyzed the browning of FCWCs ( Teng et al, 2020 , Zhu et al, 2022 ). Recently, some researchers proposed that the browning of FCWCs was a kind of yellowing ( Pan et al, 2015 , Song et al, 2019b ).…”

Preparation of low molecular weight Enteromorpha prolifera polysaccharide and its antioxidant and tyrosinase inhibitory activities

“…For example, Wang et al (2021) reported that the fucoidan fraction with MW below 5 kDa demonstrated strong tyrosinase inhibitory effect and shown obvious browning inhibition of fresh-cut apple slices (Wang et al, 2021). Stilbene-hydroxypyridinone hybrid, gallic acid-benzylidenehydrazine hybrid, the synthetic tyrosinase inhibitors, exhibited capacity to preserve fresh-cut apples and shrimps (Zhu et al, 2022;Peng et al, 2022). Sulfated polysaccharides, degraded low-molecular-weight polysaccharides, or oligosaccharides derived from seaweed have been reported to be effective as tyrosinase inhibitors.…”