Table 1. Changes in viable cell counts of individual lactic acid bacteria strains during cultivation under dark and red light-emitting diode (RLED) conditions

Lactic acid bacteria	Light condition	Cultivation time (h)
Lactic acid bacteria	Light condition	0	24	48
Lacticaseibacillus rhamnosus	Darkness	6.00±0.14	9.19±0.09	9.53±0.10
Lacticaseibacillus rhamnosus	RLED	6.00±0.14	9.61±0.05	9.44±0.43
Lactiplantibacillus plantarum	Darkness	6.36±0.11	9.71±0.04	9.65±0.04
Lactiplantibacillus plantarum	RLED	6.36±0.11	9.67±0.02	8.65±0.00
Lactobacillus acidophilus	Darkness	6.50±0.03	8.37±0.11	8.88±0.26
Lactobacillus acidophilus	RLED	6.50±0.03	9.14±0.03	9.08±0.08

Each strain was cultivated at 37℃ under continuous RLED irradiation or darkness, and viable cell counts were determined at 0, 24, and 48 h. Values are presented as mean±SD (n=3).