TABLE 1.

A summary of the details of a collection of published pH tolerance assays.

Genus	Material	pH	Duration (h)	Detection	References
L. rhamnosus	Freeze-dried	2.5	1	Plate count enumeration	Stage et al., 2020
L. casei	Fresh cells	2	1	Plate count enumeration	Huang et al., 2018
Different LAB	Fresh cells	2.5	3 and 6	Plate count enumeration	Ilango et al., 2016
Different LAB	Spray-dried	2	0.5, 1, 1.5, and 2	Plate count enumeration	Ilango et al., 2016
Different LAB	Freeze-dried	2	0.5, 1, 1.5, and 2	Plate count enumeration	Ilango et al., 2016
B. animalis	Fresh cells	2 and 3, with or without pepsin	3	Plate count enumeration	Charnchai et al., 2016
L. plantarum	Spray-dried	2, with pepsin	1, 2, 3, and 4	Plate count enumeration	Dolly et al., 2011
L. plantarum	Freeze-dried	2, with pepsin	1, 2, 3, and 4	Plate count enumeration	Dolly et al., 2011
Different LAB	Fresh cells	2.5	0.5, 1, 1.5, 2, 3, 4, 5, 6, 7, and 24	OD620	Jacobsen et al., 1999
Different LAB	Fresh cells	2.5	4	Plate count enumeration	Jacobsen et al., 1999
Different LAB	Fresh cells	3, 4, 5, 7, 9, 11, 13	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11	OD600	Brink et al., 2006
L. plantarum	Fresh cells	2, 2.5, and 3	0.5	Plate count enumeration	Turchi et al., 2013
L. casei	Spray-dried	2.0, 3.0, and 4.0	0.5, 1, 2, and 3	Plate count enumeration	Gul and Atalar, 2019
L. casei	Freeze-dried	2.0, 3.0, and 4.0	0.5, 1, 2, and 3	Plate count enumeration	Gul and Atalar, 2019
L. plantarum	Freeze-dried	2	0.5, 1, 1.5, 2	Plate count enumeration	Tee et al., 2013
L. reuteri	Freeze-dried	2	30 min intervals	FC	Hernández et al., 2019
L. reuteri	Fresh cells	2	5, 15, 30, and 60 min	Plate count enumeration	Rosander et al., 2008