Real-Time and In Situ Evaluation of Phycocyanin Concentration in Spirulina platensis Cultivation System by Using Portable Raman Spectroscopy

Table 2

The response value of dry cell weight (DCW), phycocyanin content in liquid (PCL), and phycocyanin content in dried Spirulina (PCD) in different culture conditions.

	N1	N2	N3	RN	P1	P2	P3	RP
DCW	0.332	0.130	0.048	0.284	0.147	0.168	0.195	0.048
PCL	63.643	17.081	4.785	58.858	20.962	29.580	34.966	14.004
PCD	190.997	126.881	94.094	96.093	113.588	141.300	157.084	43.496

Each content was measured once. N1, N2, and N3 were different concentrations of NH₄Cl (0.1, 0.2, and 0.3 mg/L); P1, P2, and P3 were different concentrations of K₂HPO₄ (0.02, 0.42, and 0.82 mg/L); R_N and R_P were the range of response value caused by different concentrations of N and P.