Content of Lipids, Fatty Acids, and Fucoxanthin in Branches of Different Ages of Cystoseira barbata (Stackhouse) C. Agardh (Phaeophyceae)

Ryabushko, V. I.; Камнев, А.Н.; Гуреева, Е. В.; Празукин, А. В.; Nechoroshev, M. V.

doi:10.1615/interjalgae.v21.i4.50

Cited by 2 publications

(1 citation statement)

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“…Wood is known to have very low contents of lipophilic compounds, not exceeding 2.6 % in Pinus pinaster and 1.2 % in Eucalyptus globulus (Jiménez et al, 2008). The high value detected in Dictyota dichotoma (7.2 ± 1.1%) can be explained by the abundance of lipids, mainly diacylglycerol derivatives, and the presence of pigments of the algae highlighting different types of chlorophyll, fucoxanthin and beta-carotene (Ryabushko et al, 2019). In any case, similar or even larger amounts of lipophilic compounds, as found in date palm rachis (6.3% in ethanol-toluene) (Khiari et al, 2010), Arundo donax (7.3%), sorghum stalks (8%) (Jiménez et al, 2008) or Tunisian vine stems (11.3%) (Mansouri et al, 2012), have not made researchers refrain from proposing those alternative materials for papermaking.…”

Section: Chemical Characterizationmentioning

confidence: 97%

Valorization of Seaweed: Using Brown Algae Waste in Papermaking

Moral

Aguado

Amaya

et al. 2021

Preprint

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In this work, the brown alga Dictyota dichotoma was explored as a new reinforcing material for papermaking. Performing the typical chemical tests for cellulosic substrates on D. dichotoma evidenced large amounts of ethanol:benzene extractable substances (7.2%) and ashes, algae-specific results. Also, even if lipophilic compounds are removed, brown seaweed are not a primary source of fibers because it contains low proportion of cellulose. However, its elevated content of insoluble carbohydrates (51.4%) suggest there is some potential in association with conventional cellulosic pulps, as fibrous elements contribute to sheet forming and other components fill the spaces in the paper web without noteworthy loss of strength. Extraction was carried out with clean processes: hydrogen peroxide and mixtures (hydrogen peroxide-hydrochloric acid and hydrogen peroxide-sodium perborate), sodium hydroxide and sodium hypochlorite, always aiming for low reagent concentrations, in the range of 1-12%. The results show that sodium hydroxide and sodium hypochlorite were the treatments that lead to paper sheets with better structural and mechanical properties without further bleaching or refining, thus highlighting the suitability of these algae for papermaking applications.

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Section: Chemical Characterizationmentioning

confidence: 97%