Chemical composition of seaweeds

Peng, Yan; Hu, Jing; Yang, Bin; Lin, Xiuping; Zhou, Xuefeng; Yang, Xiong‐Li; Liu, Yonghong

doi:10.1016/b978-0-12-418697-2.00005-2

Cited by 54 publications

(69 citation statements)

References 174 publications

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“…Conferring to Nelson et al, 2002, total algae specimen lipid content accumulated through winter and spring and deteriorated in summer. Temperature deliberated the most important environmental factors that influenced on fatty acids cell membranes (Peng et al, 2015) wherever at low temperatures fatty acids contents escalation.…”

Section: Discussionmentioning

confidence: 99%

Biochemical Composition and Nutraceutical Perspectives Red Sea Seaweeds

Alwaleed¹

2019

American Journal of Applied Sciences

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Seaweeds are marketed as "nutraceuticals" owing to their highly bioactive ingredients as well as food supplements in order to relinquish physiological conditions and resist diseases. In the current study, the biochemical compositions (total protein, carbohydrate, lipid, fatty acids, amino acid, minerals and dietary fibers) of the seaweeds Caulerpa racemosa, Digenea simplex, Sargassum polycystum and Cystoseria myrica were evaluated. Digenea simplex alga has the highest content of protein, while C. racemosa is rich in lipid. Highly concentrations of carbohydrates and dietary fibers were detected in S. polycystum and C. myrica. However, C. myrica contains large amount of amino acids. This research focused on the role of chemical composition of seaweeds in consumption as food and valuable medicinal products.

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Section: Discussionmentioning

confidence: 99%

Biochemical Composition and Nutraceutical Perspectives Red Sea Seaweeds

Alwaleed¹

2019

American Journal of Applied Sciences

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“…This economic limitation has fostered research focusing on dietary replacement of live microalgae in bivalve hatcheries (Arney, Liu, Forster, McKinley, & Pearce, ; Boeing, ). A research line has focused on seaweed (SW), which is deemed to be a food source both for human and animal nutrition, mainly due to its high nutritional value (Peng et al, ).…”

Section: Introductionmentioning

confidence: 99%

“…A research line has focused on seaweed (SW), which is deemed to be a food source both for human and animal nutrition, mainly due to its high nutritional value (Peng et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Elemental composition and bioaccessibility of farmed oysters (Crassostrea gigas) fed different ratios of dietary seaweed and microalgae during broodstock conditioning

Cardoso

Gomes

Rato

et al. 2019

Food Science & Nutrition

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The Pacific oyster ( Crassostrea gigas ) culture has been expanding, thereby leading to a greater importance of hatcheries. Broodstock conditioning is very important in the hatchery process, in which diet composition may have a strong influence on the offspring production and quality. Therefore, the current study evaluated elemental composition and bioaccessibility of oysters fed different ratios of dietary seaweed (SW) and microalgae. The dietary conditioning consisted of direct replacement of microalgae by SW at four substitution levels (0%, 25%, 50%, and 100% diet). It was observed that oysters fed 100% SW had the highest levels of Be, Cu, Zn, Sr, and Cd. The most important trend was a concentration decline of most elements with progressively lower levels of SW substitution for microalgae in the feeds. No Cd or Pb hazard (contents below 1.0 mg/kg for Cd and 1.5 mg/kg for Pb) was found in oyster meat. Regarding elemental bioaccessibility, values were similar, near 100% in the cases of Cu, Br, and I. Only for Mn and Pb, bioaccessibility percentages deviated more from 100%. Indeed, the value for Pb was 50% ± 7% (initial group), and for Mn, all values were equal or lower than 29% ± 2% (final group of oysters fed microalgae). It was observed that Mn, Cd, and Pb bioaccessibility increased with a growing share of microalgal biomass in the feed. Therefore, this study showed that SW incorporation into the feed influences elemental composition and bioaccessibility of the oysters.

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“…Seaweeds are considered as food source for both human and animal nutrition, mainly due to their high nutritional value (Fleurence, 1999;Peng et al, 2015). Along with protein content (about 10-25% of seaweed (SW) dry weight), SW in general have high levels of mineral elements, such as calcium and magnesium (Fleurence et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Fatty Acid Profile of Pacific Oyster, Crassostrea gigas, Fed Different Ratios of Dietary Seaweed and Microalgae during Broodstock Conditioning

Rato

Pereira

Joaquim

et al. 2019

Lipids

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The fatty acid (FA) profile of oysters generally reflects the dietary FA composition. Moreover, incorporation of FA into tissues is modulated by various metabolic factors, and final composition will depend upon the dietary sources, cumulative intake, and oysters' development stage. Thus, the aim of this study was to assess the impact of dietary incorporation of seaweed (SW) Ulva rigida, in replacement of traditional microalgae diet, on the FA composition of Pacific oysters Crassostrea gigas, during broodstock conditioning. The dietary conditioning consisted of direct replacement of microalgae (33% Tisochrysis lutea, 50.25% Skeletonema costatum, and 16.75% Chaetoceros calcitrans) by SW at four different substitution levels (0%, 25%, 50%, and 100% diet). The dietary docosahexaenoic acid (DHA) (22:6n‐3) and eicosapentaenoic acid (EPA) (20:5n‐3) contents showed a positive correlation with the dietary microalgae level. During the trial, oysters fed with higher percentages of microalgae revealed a depletion of DHA and accumulation of EPA. The 100% SW caused a significant reduction in oxygen consumption and, consequently, in the standard metabolic rate. Based on these results, a partial substitution of up to 25% of dietary microalgae seems to be a suitable alternative, because it elicited similar results to the commercial 100% microalgae diet.

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Chemical composition of seaweeds

Cited by 54 publications

References 174 publications

Biochemical Composition and Nutraceutical Perspectives Red Sea Seaweeds

Biochemical Composition and Nutraceutical Perspectives Red Sea Seaweeds

Elemental composition and bioaccessibility of farmed oysters (Crassostrea gigas) fed different ratios of dietary seaweed and microalgae during broodstock conditioning

Fatty Acid Profile of Pacific Oyster, Crassostrea gigas, Fed Different Ratios of Dietary Seaweed and Microalgae during Broodstock Conditioning

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