Seasonal changes in growth rate, morphology and alginate content in Undaria pinnatifida at the northern limit in the Sea of Japan (Russia)

Analysis by Vibrational Spectroscopy of Seaweed Polysaccharides with Potential Use in Food, Pharmaceutical, and Cosmetic Industries

“…However, the FTIR spectra of Saccorhiza polyschides (Figure 7(c)) show 6 International Journal of Carbohydrate Chemistry an intense broad band centred at 1025 cm −1 , indicating that the samples considered are particularly rich in guluronic acid. According to our spectrum on U. pinnatifida (old adult thallus, Figure 8(a)), the relative amounts of both mannuronate and guluronate residues were similar, and result in accordance with other published works [33].…”

“…Our spectra suggesting higher values of guluronic than mannuronic acid blocks in Padina pavonica (Figure 8(b)); Sargassum vulgare spectra (Figure 8(c)) suggesting the presence of similar amounts of the mannuronate and guluronate residues, results in accordance with other published works [33][34][35].…”

Seasonal variations of the composition and structural characteristics of polysaccharides from the brown alga Costaria costata

“…As noted earlier [23,2], the physiological and chemical status of algae changes significantly during spore setting. In order to check the hypothesis about the role of spore genesis in the change of composition and structure of water-soluble polysaccharides, we took from June collections of C. costata including a mixture of fertile and sterile specimens thalli with mature sporangiae and isolated from them a fraction of water-soluble polysaccharides (fraction FLM 6fert ).…”

High genetic diversity in gametophyte clones of Undaria pinnatifida from Vladivostok, Dalian and Qingdao revealed using microsatellite analysis

“…The temperature ranges of Vladivostok, Dalian and Qingdao are 0°C-24°C (Skriptsova et al, 2004), 2°C-25°C and 4°C-26°C respectively. As a result the genetic variations between these two populations may reflect adaptations to their different environments.…”