Table 5.
Concentration of studied vitamins and precursors in 15 microalgae powders.
| AP | CP | CV | DS | TC | AFA | HP | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | ◊ | 1 | 2 | 3 | ◊ | 1 | 2 | ◊ | 1 | 2 | ◊ | 1 | 1 | 1 | ||
| Vitamin D | ||||||||||||||||||||
| Vitamin D2 * | µg/100 g | <LOQ | <LOQ | <LOQ | <LOQ | <LOQ | a | 37.3 ± 2.9 | 68.7 ± 1.7 | 420.6 ± 1.7 | b | 55.4 ± 3.5 | 110.3 ± 7.7 | b | <LOQ | <LOQ | a | <LOQ | <LOQ | <LOQ |
| Vitamin D3 o | µg/100 g | <LOQ | <LOQ | <LOQ | <LOQ | <LOQ | a | <LOQ | <LOQ | 1.25 ± 0.03 | a | <LOQ | 0.639 ± 0.007 | a | <LOQ | <LOQ | a | <LOQ | 0.96 ± 0.07 | <LOQ |
| Tocopherols | ||||||||||||||||||||
| α-tocopherol # | mg/100 g | 1.20 ± 0.14 | <LOQ | <LOQ | <LOQ | 0.85 ± 0.40 | a | 3.62 ± 0.34 | 3.94 ± 0.55 | 4.78 ± 0.37 | b | 3.85 ± 0.23 | 4.50 ± 0.51 | b | 46.90 ± 1.96 | 37.47 ± 1.41 | c | 9.49 ± 0.07 | 1.98 ± 0.44 | <LOQ |
| δ-tocopherol # | mg/100 g | <LOQ | <LOQ | <LOQ | <LOQ | <LOQ | a | <LOQ | <LOQ | <LOQ | a | <LOQ | <LOQ | a | <LOQ | <LOQ | a | <LOQ | 1.90 ± 0.50 | <LOQ |
AFA, Aphanizomenon flos-aquae; AP, Arthrospira platensis; CP, Chlorella pyrenoidosa; CV, Chlorella vulgaris; DS, Dunaliella salina; HP, Haematococcus pluvialis; TC, Tetraselmis chuii; LOQ, limit of quantification; *, LOQ = 0.013 µg/100 g d.w.; o, LOQ = 0.4 µg/100 g d.w.; #, LOQ = 0.5 mg/ 100 g d.w.; ◊ different letters indicate significant differences between the microalgae species (p < 0.05; n > 1); values are expressed as means ± SD (n = 2).