Commercial Red Seaweed in Portugal (Gelidium sesquipedale and Pterocladiella capillacea, Florideophyceae): Going beyond a Single-Purpose Product Approach by Valorizing Bioactivity

Matos, Joana; Gomes, Ana M. P.; Cardoso, Carlos; Afonso, Cláudia; Campos, Ana M.; Gomes, Romina; Falé, Pedro L.; Delgado, Inês; Coelho, Inês; Castanheira, Isabel; Bandarra, Narcisa M.

doi:10.1007/s41208-019-00181-z

Cited by 14 publications

(15 citation statements)

References 45 publications

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“…G. corneum is stated as a species with low antioxidant capacity, and the values in our study fall within the range found by Matos et al [108]. In fact, for DPPH our data are rather low (up to 10.89%) when compared to the values obtained for other red algae such as G. amansii, Neopyropia tenera (formerly Porphyra tenera), Scinaia okamurae, or Lithophyllum okamurae, among others, whose inhibition rates in the DPPH assay fall between 20 and 30% inhibition [109].…”

Section: Discussionsupporting

confidence: 92%

“…The FRAP assay did not detect any antioxidant activity. Thus, our results are comparable with Matos et al [108] aqueous extracts for the spring and autumn biomass and are higher for the values obtained for the summer and winter biomass.…”

Section: Discussionsupporting

confidence: 89%

“…The results obtained for the FRAP assay were lower to those of several brown algae such as Turbinaria ornata, Hydroclathrus clathratus, and Sargassum aquifolium (formerly S. echinocarpum); green algae such as Gayralia oxysperma and Chaetomorpha antennina; and other red algae such as Wilsonosiphonia howei (formerly Polysiphonia howei), Gymnogongrus durvillei (formerly Ahnfeltiopsis concinna), and Pterocladiella capilacea [111]. In another study by Matos and coworkers [108] they assessed the antioxidant activity of both aqueous and ethanolic extracts of Gelidium corneum (as G. sesquipedale). Both extracts produced low to no activity, and only the ethanol extract produced a 6.8% inhibition in the DPPH assay.…”

Section: Discussionmentioning

confidence: 71%

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Seasonal Nutritional Profile of Gelidium corneum (Rhodophyta, Gelidiaceae) from the Center of Portugal

Cavaco

Duarte

Freitas

et al. 2021

Foods

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Gelidium corneum is a well-known agarophyte, harvested worldwide for its high agar quality. However, the species also exhibits an interesting nutritional profile, but with seasonal variations. Therefore, to evaluate the nutritional value of G. corneum, ash, crude protein, total lipids, and carbohydrates were analyzed at different times of the year. The heavy metals mercury, arsenic, lead, cadmium, and tin, as well as iodine were also measured. Finally, the seasonal antioxidant capacity of G. corneum extracts was evaluated. Our results indicate that the biomass is rich in protein (up to 16.25 ± 0.33%) and carbohydrates (up to 39.5 ± 3.29%), and low in lipids (up to 2.75 ± 0.28%), and especially in the summer, the AI, TI indexes, n-6/n-3 and h/H ratios (0.93, 0.6, 0.88 and 1.08, respectively) are very interesting. None of the contaminants exceeded the legally established limits, and the iodine values were adequate for a healthy diet. Finally, the antioxidant capacity is fair, with the DPPH £ 10.89 ± 1.46%, and ABTS £ 13.90 ± 1.54% inhibition, FRAP £ 0.91 ± 0.22 AAE.g−1, and TPC £ 6.82 ± 0.26 GAE.g−1. The results show that G. corneum is an attractive resource, with potential use as food or as a food supplement.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 71%

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Seasonal Nutritional Profile of Gelidium corneum (Rhodophyta, Gelidiaceae) from the Center of Portugal

Cavaco

Duarte

Freitas

et al. 2021

Foods

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“…There are signs in the literature of the effective nutritional value and biological activities from Gelidium sesquipedale extracts, such as anti-enzymatic, antimicrobial, antioxidant, anti-inflammatory, or cytotoxic activities [ 9 , 10 , 11 ]. Moreover, the fatty acid composition, the total phenolic (TPC) and total flavonoid (TFC) contents, the identification of functional low-molecular-weight carbohydrates, the recovery of proteins and the detection of mycosporine-like amino acids (MAAs) have been reported in the literature [ 12 , 13 , 14 , 15 , 16 ], showing the potential of Gelidium sesquipedale biomass. Nevertheless, extraction methods commonly used for the isolation of these bioactive compounds are based on conventional techniques, which imply long extraction times, the use of high volumes of organic solvents, and high energy requirements, producing environmental and health problems [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

Valorization of the Red Algae Gelidium sesquipedale by Extracting a Broad Spectrum of Minor Compounds Using Green Approaches

et al. 2021

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Until now, the red algae Gelidium sesquipedale has been primarily exploited for agar production, leaving an undervalued biomass. In this work, the use of eco-friendly approaches employing ultrasound-assisted extraction (UAE) and green solvents was investigated to valorize the algal minor compounds. The green methods used herein showed an attractive alternative to efficiently extract a broad spectrum of bioactive compounds in short extraction times (15 to 30 min vs. 8 h of the conventional method). Using the best UAE conditions, red seaweed extracts were characterized in terms of total phenolics (189.3 ± 11.7 mg GAE/100 g dw), flavonoids (310.7 ± 9.7 mg QE/100 g dw), mycosporine-like amino acids (MAAs) (Σ MAAs = 1271 mg/100 g dw), and phycobiliproteins (72.4 ± 0.5 mg/100 g dw). Additionally, produced algal extracts exhibited interesting antioxidant and anti-enzymatic activities for potential applications in medical and/or cosmetic products. Thus, this study provides the basis to reach a superior valorization of algal biomass by using alternative methods to extract biologically active compounds following eco-friendly approaches. Moreover, the strategies developed not only open new possibilities for the commercial use of Gelidium sesquipedale, but also for the valorization of different algae species since the techniques established can be easily adapted.

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“…The yield of the active substances extracted from seaweed is ranging from less than 1% up to 40% of the dry algal mass, depending on various factors, such as target metabolite, species and season (Pereira and Costa-Lotufo, 2012). To increase the value of commercial seaweeds it is important to study the remaining biomass after the extraction of the target substances and find new strategies for its further valorization, for example with the Gelidium sesquipedale and Pterocladiella capillacea biomass remaining after agar extraction (Matos et al, 2020). Understanding the physiological effects of seaweeds or seaweed extracts is a complicated task; similarly to other marine organisms their properties differ depending on the geographical origin and season of harvest.…”

Section: Macroalgae and Seagrassesmentioning

confidence: 99%

The Essentials of Marine Biotechnology

Barbier²,

et al. 2021

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Coastal countries have traditionally relied on the existing marine resources (e.g., fishing, food, transport, recreation, and tourism) as well as tried to support new economic endeavors (ocean energy, desalination for water supply, and seabed mining). Modern societies and lifestyle resulted in an increased demand for dietary diversity, better health and well-being, new biomedicines, natural cosmeceuticals, environmental conservation, and sustainable energy sources. These societal needs stimulated the interest of researchers on the diverse and underexplored marine environments as promising and sustainable sources of biomolecules and biomass, and they are addressed by the emerging field of marine (blue) biotechnology. Blue biotechnology provides opportunities for a wide range of initiatives of commercial interest for the pharmaceutical, biomedical, cosmetic, nutraceutical, food, feed, agricultural, and related industries. This article synthesizes the essence, opportunities, responsibilities, and challenges encountered in marine biotechnology and outlines the attainment and valorization of directly derived or bio-inspired products from marine organisms. First, the concept of bioeconomy is introduced. Then, the diversity of marine bioresources including an overview of the most prominent marine organisms and their potential for biotechnological uses are described. This is followed by introducing methodologies for exploration of these resources and the main use case scenarios in energy, food and feed, agronomy, bioremediation and climate change, cosmeceuticals, bio-inspired materials, healthcare, and well-being sectors. The key aspects in the fields of legislation and funding are provided, with the emphasis on the importance of communication and stakeholder engagement at all levels of biotechnology development. Finally, vital overarching concepts, such as the quadruple helix and Responsible Research and Innovation principle are highlighted as important to follow within the marine biotechnology field. The authors of this review are collaborating under the European Commission-funded Cooperation in Science and Technology (COST) Action Ocean4Biotech – European transdisciplinary networking platform for marine biotechnology and focus the study on the European state of affairs.

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Commercial Red Seaweed in Portugal (Gelidium sesquipedale and Pterocladiella capillacea, Florideophyceae): Going beyond a Single-Purpose Product Approach by Valorizing Bioactivity

Cited by 14 publications

References 45 publications

Seasonal Nutritional Profile of Gelidium corneum (Rhodophyta, Gelidiaceae) from the Center of Portugal

Seasonal Nutritional Profile of Gelidium corneum (Rhodophyta, Gelidiaceae) from the Center of Portugal

Valorization of the Red Algae Gelidium sesquipedale by Extracting a Broad Spectrum of Minor Compounds Using Green Approaches

The Essentials of Marine Biotechnology

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