A Review on Seaweeds and Seaweed-Derived Polysaccharides: Nutrition, Chemistry, Bioactivities, and Applications

Xie, Cundong; Lee, Zu Jia; Ye, Shujun; Barrow, Colin J.; Dunshea, Frank R.; Suleria, Hafiz Ansar Rasul

doi:10.1080/87559129.2023.2212055

Cited by 16 publications

(5 citation statements)

References 260 publications

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“…With the emergence of epidemiological studies highlighting a causal association between reduced risk of metabolic diseases and seaweed consumption, the consumption of seaweed in Western diet has steadily increased over the past decade [2][3][4][5]. There is a total of 145 edible seaweed species cultured or wildly harvested globally (mainly in East and Southeast Asia) which include green seaweed (20%), brown seaweed (26%), and red seaweed (54%) [6]. Australia's coastal water harbours a high number of endemic seaweed species, many of which have immense untapped potentials for food and nutraceutical applications [7].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Ultrasonic Extraction Parameters for the Recovery of Phenolic Compounds in Brown Seaweed: Comparison with Conventional Techniques

Lee,

Xie,

Duan

et al. 2024

Antioxidants

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Seaweed, in particular, brown seaweed, has gained research interest in the past few years due to its distinctive phenolic profile that has a multitude of bioactive properties. In order to obtain the maximum extraction efficiency of brown seaweed phenolic compounds, Response Surface Methodology was utilized to optimize the ultrasound-assisted extraction (UAE) conditions such as the amplitude, time, solvent:solid ratio, and NaOH concentration. Under optimal conditions, UAE had a higher extraction efficiency of free and bound phenolic compounds compared to conventional extraction (stirred 16 h at 4 °C). This led to higher antioxidant activity in the seaweed extract obtained under UAE conditions. The profiling of phenolic compounds using LC-ESI-QTOF-MS/MS identified a total of 25 phenolics with more phenolics extracted from the free phenolic extraction compared to the bound phenolic extracts. Among them, peonidin 3-O-diglucodise-5-O-glucoside and hesperidin 5,7-O-diglucuronide are unique compounds that were identified in P. comosa, E. radiata and D. potatorum, which are not reported in plants. Overall, our findings provided optimal phenolic extraction from brown seaweed for research into employing brown seaweed as a functional food.

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Section: Introductionmentioning

confidence: 99%

Optimization of Ultrasonic Extraction Parameters for the Recovery of Phenolic Compounds in Brown Seaweed: Comparison with Conventional Techniques

Lee,

Xie,

Duan

et al. 2024

Antioxidants

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“…In East Asian nations including Japan, China, and South Korea, eating seaweed has a millennium-long tradition (Meinita et al, 2022). There are around 11 000 known species of seaweed, which can be classified according to their colour into brown algae, green algae, and red algae, of which the most consumed are brown algae (Lomartire et al, 2021;Xie et al, 2023). According to previous studies, seaweed contains minerals (Ca, Fe, I, Mg, P, K, Zn, Cu, Mn, Se, and F), proteins, essential amino acids, dietary fibre, and polyphenols with anti-inflammatory and antioxidant qualities.…”

Section: Introductionmentioning

confidence: 99%

UVB irradiation improved the gel properties of phycocyanin‐undaria pinnatifida hydrogel

Sun,

Ren,

et al. 2024

Int J of Food Sci Tech

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SummaryRich in numerous nutrients, undaria pinnatifida (UP) exhibited a broad spectrum of biological properties, including anti‐inflammatory, anti‐bacterial, anti‐cancer, and antioxidant properties. A sexual pigment protein complex known as phycocyanin (PC) was the perfect photosensitiser and had no negative effects. Due to their superior qualities, hydrogels were also widely employed in tissue engineering, medication administration, and food packaging at the same time. The aim of this work was to investigate the impact of UVB irradiation on the gel characteristics of PC‐UP hydrogels using UVB irradiation technology rather than chemical crosslinking approach. The results showed that the G′ value of PC‐UP hydrogel increased from 114.17 ± 0.58 Pa to 156.72 ± 0.82 Pa and the G″ value increased from 36.80 ± 0.79 Pa to 58.05 ± 1.06 Pa after UVB irradiation. At the same time, the texture properties of hydrogel were significantly improved, and the hardness, adhesion and chewiness were increased to 214.02 ± 3.85, 198.51 ± 4.25 and 195.81 ± 5.69, respectively. After UVB irradiation, hydrogen bond was formed in PC‐UP hydrogel to improve its thermal stability. In conclusion, the results show that PC decomposes with alginic acid, potassium salt, and sodium salt in UP under UVB irradiation to form a gel network structure, which enhances its gel properties. This study provides guidance for the photo response of PC‐UP hydrogels, provides ideas for the application of PC‐UP hydrogels, and broadens the application field of future hydrogels.

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“…Seaweeds have been employed since ancient times mainly in Asian countries [ 5 , 6 ], but nowadays, due to their availability and large diversity, seaweeds are considered globally as a novel source of bioactive components, such as peptides, amino acids, proteins, and polysaccharides. Thus, seaweeds have been used in a wide range of applications [ 7 ], such as human nutrition (43.77%) [ 8 ], animal feed (3.86%) [ 9 ], bioplastic production (5.34%) [ 10 ], and nutraceuticals (1.93%) [ 11 ]. As most of the species have no applications for human consumption, and can even act as invasive species when landing in different environments [ 12 ], they can be used as raw materials for the development of biodegradable materials [ 13 ], in line with the aim of a circular economy [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Seaweed as Basis of Eco-Sustainable Plastic Materials: Focus on Alginate

Santana,

Felix,

Bengoechea

2024

Polymers

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Seaweed, a diverse and abundant marine resource, holds promise as a renewable feedstock for bioplastics due to its polysaccharide-rich composition. This review explores different methods for extracting and processing seaweed polysaccharides, focusing on the production of alginate plastic materials. Seaweed emerges as a promising solution, due to its abundance, minimal environmental impact, and diverse industrial applications, such as feed and food, plant and soil nutrition, nutraceutical hydrocolloids, personal care, and bioplastics. Various manufacturing techniques, such as solvent casting, injection moulding, and extrusion, are discussed for producing seaweed-based bioplastics. Alginate, obtained mainly from brown seaweed, is particularly known for its gel-forming properties and presents versatile applications in many sectors (food, pharmaceutical, agriculture). This review further examines the current state of the bioplastics market, highlighting the growing demand for sustainable alternatives to conventional plastics. The integration of seaweed-derived bioplastics into mainstream markets presents opportunities for reducing plastic pollution and promoting sustainability in material production.

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A Review on Seaweeds and Seaweed-Derived Polysaccharides: Nutrition, Chemistry, Bioactivities, and Applications

Cited by 16 publications

References 260 publications

Optimization of Ultrasonic Extraction Parameters for the Recovery of Phenolic Compounds in Brown Seaweed: Comparison with Conventional Techniques

Optimization of Ultrasonic Extraction Parameters for the Recovery of Phenolic Compounds in Brown Seaweed: Comparison with Conventional Techniques

UVB irradiation improved the gel properties of phycocyanin‐undaria pinnatifida hydrogel

Seaweed as Basis of Eco-Sustainable Plastic Materials: Focus on Alginate

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