. 2021 Mar 19;11(19):11568–11582. doi: 10.1039/d0ra09706c

The SPR peaks of e-TiO₂-NPs suspensions (0.5%, 1%, and 1.5% w/w) without or with the presence of the food matrix during each phase of in vitro digestion^a.

Food matrix	Digestion step	UV-Vis absorption peak
Food matrix	Digestion step	0.5%	1%	1.5%
Without	Before digestion	352 ± 1.63^b	339 ± 1.49^a	332 ± 2.43^a
	Salivary step	338 ± 2.43^a	340 ± 0.00^a	347 ± 2.04^b
	Gastric step	548 ± 1.15^c	512 ± 2^b	483 ± 1.15^c
	Intestinal step	602 ± 4.62^d	602 ± 0.58^c	595 ± 2.31^d
With	Before digestion	345 ± 3.14**^A	332 ± 1.37**^A	330 ± 2.31^A
	Salivary step	345 ± 3.40*^A	337 ± 1.79^B	333 ± 1.53**^A
	Gastric step	543 ± 1.73**^B	563 ± 0.58**^C	573 ± 1.15**^B
	Intestinal step	614 ± 0.00*^C	619 ± 0.00**^D	624 ± 0.00**^C

The lower-case (a–d) and capital (A–D) letters indicate significant differences between digestive step in the absence and presence of the food matrix (P < 0.05). * indicates significant differences between the absence and presence of food matrix for each phase of digestion (*P < 0.05 and **P < 0.01).

The SPR peaks of e-TiO2-NPs suspensions (0.5%, 1%, and 1.5% w/w) without or with the presence of the food matrix during each phase of in vitro digestiona.

The SPR peaks of e-TiO₂-NPs suspensions (0.5%, 1%, and 1.5% w/w) without or with the presence of the food matrix during each phase of in vitro digestion^a.