Optimization of Lactic Acid Production from Pineapple By-Products and an Inexpensive Nitrogen Source Using Lactiplantibacillus plantarum strain 4O8

Table 1

Real levels of variables used in definitive plan.

Variables	Codes	Range and levels
		-1	0	+1
MgSO4 (g/l)		0	0.3	0.6
MnSO4 (g/l)		0	0.025	0.05
Temperature (°C)		30	37.5	45
FeSO4 (g/l)		0	0.025	0.05
K2HPO4 (g/l)		0	0.4	0.8
kH2PO4 (g/l)		0	0.4	0.8
NS (ml/l)		0	30	60
CS (g/l)		100	300	500