Variation in the Biochemical Composition of the Edible Seaweed Grateloupia turuturu Yamada Harvested from Two Sampling Sites on the Brittany Coast (France): The Influence of Storage Method on the Extraction of the Seaweed Pigment R-Phycoerythrin

Table 2

Purity index (PI) and yields of crude extracts and protein extracts from samples from sites A and B and following the three storage modes.

	Fraction
	PI (A565nm/A280nm)	R-PE yield (×10^−2 mg·g^−1 dw)
A1 CE	0.22 ± 0.00	115.21 ± 0.75
A1 PE	0.49 ± 0.01	74.42 ± 0.43
A2 CE	0.12 ± 0.03	50.03 ± 2.13
A2 PE	0.17 ± 0.01	31.61 ± 0.75
A3 CE	0.12 ± 0.00	71.50 ± 1.14
A3 PE	0.27 ± 0.01	40.01 ± 0.78
B1 CE	0.76 ± 0.01	408.34 ± 4.08
B1 PE	0.93 ± 0.03	264.56 ± 2.08
B2 CE	0.48 ± 0.01	215.38 ± 15.05
B2 PE	0.57 ± 0.01	182.19 ± 6.47
B3 CE	0.70 ± 0.01	364.32 ± 20.02
B3 PE	0.78 ± 0.01	254.78 ± 7.67

Data are expressed as the mean ± SD (𝑛=3). Note: samples PI values are all significantly different between them. The same is observed for R-PE yield values.