Environmental conditions influence on the physicochemical properties of wild and cultivated Palmaria palmata in the Canadian Atlantic shore

Vasconcelos, Margarida Maria Monteiro; Marson, Gabriela Vollet; Turgeon, Sylvie L.; Tamigneaux, Éric; Beaulieu, Lucie

doi:10.1007/s10811-022-02783-2

Cited by 9 publications

(10 citation statements)

References 71 publications

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“…The findings of the study herein differ from those observed by Vasconcelos et al [65] who reported on the colour parameters of P. palmata fronds grown in tanks at 3 • C with nutrient medium (Guillard's nutrient supplement) and illumination with white fluorescent light (250 µmol photons m −2 s −1 ); 16:8 L:D for 8 h. The reported colour parameters (L*, a* and b*) of the powdered P. palmata biomass obtained were 52.19 ± 1.16, 3.58 ± 0.82 and 2.91 ± 0.40, respectively. In the study herein, P. palmata was cultured in the laboratory under an LED lighting system for a longer period i.e., up to 12 days, with a lower illumination of 100 µmol m −2 s −1 and at 10 • C which could have accounted for the differences in colour parameters between the two studies.…”

Section: Colour Parameters Of Cultured P Palmatacontrasting

confidence: 99%

Impact of Different Light Conditions on the Nitrogen, Protein, Colour, Total Phenolic Content and Amino Acid Profiles of Cultured Palmaria palmata

Idowu,

Amigo-Benavent,

Whelan

et al. 2023

Foods

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The impact of different light conditions during culture on the nitrogen, protein, colour, total phenolic content (TPC) and amino acid profile of Palmaria palmata biomass was investigated. P. palmata was cultured using different light regimes, i.e., white (1 and 2), red, blue and green over 12 days. A significant decrease (p < 0.05) in total nitrogen (TN), non-protein nitrogen (NPN) and protein nitrogen (PN) was observed on day 6 while an increase was observed on day 12 in P. palmata samples cultured under blue light. The protein content (nitrogen conversion factor of 4.7) of the initial sample on day 0 was 15.0% (w/w) dw whereas a maximum protein content of 16.7% (w/w) was obtained during exposure to blue light following 12 days culture, corresponding to an 11.2% increase in protein content. Electrophoretic along with amino acid profile and score analyses showed light-related changes in protein composition. The lighting regime used during culture also influenced the colour parameters (lightness L*, redness a*, yellowness b* and colour difference ΔE) of milled algal biomass along with the TPC. Judicious selection of lighting regime during culture may allow the targeted production of sustainable high-quality proteins from P. palmata.

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Section: Colour Parameters Of Cultured P Palmatacontrasting

confidence: 99%

Impact of Different Light Conditions on the Nitrogen, Protein, Colour, Total Phenolic Content and Amino Acid Profiles of Cultured Palmaria palmata

Idowu,

Amigo-Benavent,

Whelan

et al. 2023

Foods

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“…Dried wild and cultivated samples of P. palmata and S. latissima , before the digestive process, were characterized according to their fiber (soluble and insoluble) and protein contents ( Table 1 ). Protein content was determined by the Kjeldahl method, as described by Vasconcelos et al [ 32 ]. The insoluble and soluble fiber contents of dried seaweeds were measured following AOAC Method 991.43 [ 77 ] using the Megazyme Kit (Bray, Ireland).…”

Section: Methodsmentioning

confidence: 99%

“…Tibbetts et al [ 23 ] have studied the digestibility of cultivated red algae and reported that a temperate red seaweed (variant of P. palmata ) may have value as a nutritional resource when cultivated solely for this purpose [ 22 ]. Seasonal variations of the protein content in seaweed have been demonstrated in studies [ 32 ] and are an important factor to consider. For instance, Galland-Irmouli et al [ 18 ] demonstrated that the highest levels of proteins are found in P. palmata in the winter–spring period (21.9 ± 3.5%) and the lowest levels (11.9 ± 2.0%) occur in the summer–early autumn period, whereas most of the essential amino acids are present throughout the year [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

“…Taking into consideration all of the above discussed aspects of macroalgae, recent works have studied the composition of several seaweeds [ 34 ], the influence of environmental and seasonal factors on them [ 32 ] and their potential as food ingredients [ 35 ]. Brown seaweed S. latissima and the red seaweed P. palmata are very relevant species in the Gulf of Saint Lawrence (Québec, QC, Canada) that represent a huge potential as bioactive food ingredients.…”

Section: Introductionmentioning

confidence: 99%

“…Soluble seaweed extracts of both P. palmata or S. latissima with antioxidant capacity (ORAC) and angiotensin-converting enzyme (ACE)-inhibitory activities were also studied as additives to Camembert-type cheese [ 38 ]. The influence of environmental conditions and cultivation mode (wild or cultivated) have been demonstrated in the composition and bioactive properties of these seaweeds [ 27 , 32 ]. Thus, previous research demonstrates the interesting bioactive profiles of S. latissima and P. palmata , but their bioactivity following digestion is still unknown.…”

Section: Introductionmentioning

confidence: 99%

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In Vitro Bioaccessibility of Proteins and Bioactive Compounds of Wild and Cultivated Seaweeds from the Gulf of Saint Lawrence

et al. 2023

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Despite the increased interest in macroalgae protein and fibers, little information is available on their bioaccessibility. The application of an in vitro gastrointestinal digestion model to study the degree of disintegration and release of proteins with expressed bioactivities from wild and cultivated Palmaria palmata and Saccharina latissima was proposed in this study. Macroalgae from the Gulf of St Lawrence, Canada, were submitted to digestive transit times of 2 (oral), 60 (gastric) and 120 (duodenal) minutes. Among wild samples, P. palmata had a higher percentage of disintegration, protein release and degree of hydrolysis than S. latissima. While the least digested sample, wild S. latissima, was the sample with the highest antioxidant activity (210 μmol TE g−1), the most digested sample, cultivated P. palmata, presented the highest ability to inhibit the angiotensin-converting enzyme (ACE), reaching 32.6 ± 1.2% at 3 mg mL−1. ACE inhibitory activity increased from 1 to 3 mg mL−1, but not at 5 mg mL−1. Wild samples from both species showed an ACE inhibition around 27.5%. Data suggested that the disintegration of the samples was influenced by their soluble and insoluble fiber contents. Further information on the bioaccessibility and bioactivity of these macroalgae should consider the characterization of digestion products other than protein, as well as the effects of previous product processing.

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Evaluation of the Near Infrared Spectroscopy (NIRS) to predict chemical composition in Ulva ohnoi

Palou¹,

Jiménez

Casals

et al. 2023

J Appl Phycol

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Green algae of the genus Ulva have been identified as suitable organisms for biomass production and good candidates for the development of seaweed blue-biotech industries. The fluctuation of chemical composition during the growth of the algae, which depends largely on environmental factors, makes the development of rapid phenotyping protocols necessary. In this work the efficacy of Near Infrared Spectroscopy (NIRS) to predict dry matter, mineral fraction, nitrogen, and carbon contents directly from wet untreated samples and from dried samples was studied. Partial least square (PLS) models from spectra recorded on 80 samples were used to predict dry matter, and 44 samples to predict carbon, nitrogen and mineral fraction on a wet and dry weight basis. NIR models developed from spectra acquired on wet samples had good accuracy (R2>0.9) for the prediction of N (on a ww and dw basis) and C (on a ww basis). Models with lower R2 scores have been obtained for dry matter (R2=0.610) and MF (R2=0.506-0.693). The models developed to predict carbon and nitrogen directly on wet and untreated samples present NIRS as a valuable tool to determine these parameters in a rapid and low-cost way, allowing making decisions about the optimal harvesting time.

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Environmental conditions influence on the physicochemical properties of wild and cultivated Palmaria palmata in the Canadian Atlantic shore

Cited by 9 publications

References 71 publications

Impact of Different Light Conditions on the Nitrogen, Protein, Colour, Total Phenolic Content and Amino Acid Profiles of Cultured Palmaria palmata

Impact of Different Light Conditions on the Nitrogen, Protein, Colour, Total Phenolic Content and Amino Acid Profiles of Cultured Palmaria palmata

In Vitro Bioaccessibility of Proteins and Bioactive Compounds of Wild and Cultivated Seaweeds from the Gulf of Saint Lawrence

Evaluation of the Near Infrared Spectroscopy (NIRS) to predict chemical composition in Ulva ohnoi

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