. 2018 Sep;56(3):344–353. doi: 10.17113/ftb.56.03.18.5495

Table 5. Specific inhibitions of the radicals ABTS⁺ and DPPH, and the enzyme activity of peroxidase and amylase in natural extracts and synthetic mixtures of microalgae.

Parameter	Spirulina sp.		Synthetic Spirulina sp.		Nannochloropsis sp.		Synthetic Nannochloropsis sp.
Parameter	Inhibition %/(min·μg)	CV/%	Inhibition %/(min·μg)	CV/%	Inhibition %/(min·μg)	CV/%	Inhibition %/(min·μg)	CV/%
γ(phenolics)/(μg/mL)	ABTS inhibition
3.0	1.15^b	7.8	0.40^d	9.3	1.73^a	9.2	0.72^c	4.4
5.0	0.96^b	2.7	0.40^d	7.3	1.33^a	10.1	0.68^c	2.8
10.0	0.93^a	7.7	0.35^c	5.7	0.95^a	12.3	0.62^b	1.0
Linear regression	y=5.1269x+4.5282	–	y=1.8983x+1.941	–	y=3.6239x+21.367	–	y=3.4845x+2.7872	–
IC₅₀/(μg/mL)	9.0	–	25	–	8.0	–	14	–
t/min	DPPH inhibition
30	0.003^c	20.7	0.014^a	2.2	0.026^b	12.0	0.028^a	7.5
60	0.006^b	5.3	0.015^a	1.9	0.015^a	3.5	0.015^a	5.5
90	0.007^b	3.5	0.014^ab	1.1	0.011^a	10.1	0.010^ab	7.4
120	0.007^b	1.6	0.013^ab	1.0	0.010^a	11.7	0.008^ab	8.5
150	0.007^b	0.8	0.012^ab	0.8	0.009^a	12.9	0.007^b	12.4
180	0.007^ab	1.3	0.013^ab	0.0	0.008^a	15.8	0.006^b	14.0
t/min	Peroxidase activity inhibition
10	0.49^b	1.5	0.49^b	2.8	0.59^a	5.1	0.45^b	9.7
20	0.36^a	3.7	0.39^a	2.4	0.39^a	3.0	0.37^a	1.7
30	0.27^a	0.6	0.28^a	0.6	0.28^a	2.0	0.28^a	0.3
	Amylase activity inhibition
	0.075^a	0.7	0.012^b	10.8	0.010^b	4.9	–	–

For each method, average values followed by the same letters in the same row do not differ statistically according to Tukey’s test (p<0.05), CV=coefficient of variation

Table 5. Specific inhibitions of the radicals ABTS+ and DPPH, and the enzyme activity of peroxidase and amylase in natural extracts and synthetic mixtures of microalgae.

Table 5. Specific inhibitions of the radicals ABTS⁺ and DPPH, and the enzyme activity of peroxidase and amylase in natural extracts and synthetic mixtures of microalgae.