Structure and Antioxidant Activity of Soy Protein Isolate-Dextran Conjugates Obtained by TiO₂ Photocatalysis

Table 1

Secondary structure distribution of SPI and SPI-dextran conjugates obtained by heat and TiO₂ photocatalysis (control sample, TP1 and TP2). Values with the same lowercase letters are not significantly different ().

	-helix (%)	-sheet (%)	-turns (%)	Random coil (%)
SPI	10.6 ± 0.2	37.9 ± 0.4	12.9 ± 0.1	38.6 ± 0.3
Control sample	10.3 ± 0.2	31.5 ± 0.3	18.3 ± 0.2	40.1 ± 0.4
TP1	5.9 ± 0.1	20.3 ± 0.2	14.5 ± 0.4	59.8 ± 0.4
TP2	3.8 ± 0.1	10.4 ± 0.2	17.7 ± 0.4	68.8 ± 0.5