Isolation and chemical characterization of algal polysaccharides from the green seaweed Ulva clathrata (Roth) C. Agardh

Hernández-Garibay, Enrique; Zertuche-González, José A.; Pacheco‐Ruiz, Isai

doi:10.1007/s10811-010-9629-0

Cited by 83 publications

(48 citation statements)

References 27 publications

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“…Moreover, allose was also present in PGCL and was not detected in PULV (Table 3). The observed level of rhamnose (19.8%) in PULV is significantly higher than the result of Hernandez-Garibay et al [24] Furthermore, the levels of galactose (4.47%) and xylose (1.01%) a b were higher in PULV compared with PGCL. However, ribose (7.03%), arabinose (6.89%) and glucose (6.16%) levels were higher in PGCL compared with PULV.…”

Section: Composition Of Sulfated Polysaccharidescontrasting

confidence: 68%

“…Furthermore, the intensity observed at 748 cm −1 for PULV is a typical signal for ulvans. [24] This result suggests that PULV exhibit characteristic of ulvans which are polysaccharides from green algae.…”

Section: Carbohydrate Content and Elemental Compositionmentioning

confidence: 90%

“…The protein content of PGCL and PULV is significantly higher compared to the sulfated polysaccharide isolated from Ulva clathrate (0.56%). [24] Figure 1 shows the elemental composition of PGCL and PULV. The EDX spectral revealed the presence of carbon, calcium, magnesium, sodium, phosphorus, potassium and sulfur in PGCL and PULV ( Figure 1(a,b)).…”

Section: Carbohydrate Content and Elemental Compositionmentioning

confidence: 99%

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Chemical characterization of sulfated polysaccharides from Gracilaria gracilis and Ulva lactuca and their radical scavenging, metal chelating, and cholinesterase inhibitory activities

Olasehinde

Mabinya

Olaniran

et al. 2019

International Journal of Food Properties

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This study was designed to evaluate the antioxidant and cholinesterase inhibitory activities of sulfated polysaccharides from Gracilaria gracilis (PGCL) and Ulva lactuca (PULV). PGCL and PULV were extracted and characterized with Scanning electron microscope-energy dispersive x-ray (SEM-EDX), Fourier transform infrared spectroscopy (FTIR) and Gas chromatography-mass spectroscopy (GC-MS). The radical (2,2-azinobis-3-ethylbenzothiazoline-6-sulfonate [ABTS] 2,2-diphenyl-1-picrylhydrazyl [DPPH], and hydroxyl [OH]) scavenging and metal chelating activities as well as their inhibitory effects on acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) activities were also determined. SEM-EDX analysis revealed the presence of elements such as carbon, magnesium, calcium, phosphorus, and sulfur. The FTIR analysis also confirmed the presence of sulfate group in the polysaccharide samples. Some sugars such as glucose, galactose, arabinose, xylose, rhamnose, and allose were also identified using GC-MS. PGCL and PULV scavenged ABTS, DPPH and OH radicals in a dose-dependent manner. Moreover, PULV exhibited higher scavenging activity compared to PGCL. PGCL and PULV also reduced the activity of AChE (IC 50 = 132.73 and 106.93 µg/mL) and BChE (IC 50 = 124.93 and 93.45 µg/mL) respectively. PGCL and PULV exhibited antioxidant activity and possess cholinesterase inhibitory activity, hence these polysaccharides could be explored as ingredients for the development of functional foods with neuroprotective potentials.

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Section: Composition Of Sulfated Polysaccharidescontrasting

confidence: 68%

Section: Carbohydrate Content and Elemental Compositionmentioning

confidence: 90%

Section: Carbohydrate Content and Elemental Compositionmentioning

confidence: 99%

See 1 more Smart Citation

Chemical characterization of sulfated polysaccharides from Gracilaria gracilis and Ulva lactuca and their radical scavenging, metal chelating, and cholinesterase inhibitory activities

Olasehinde

Mabinya

Olaniran

et al. 2019

International Journal of Food Properties

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“…Ulvan with enhanced purity level is achieved by ethanol precipitation followed by freeze-drying concentration. Nevertheless, the specific composition and yield of ulvan can be affected by environmental factors, the type of seaweed, the collection season and the extraction procedure adopted [31].…”

Section: Ulvan-structural and Functional Entitiesmentioning

confidence: 99%

Marine Seaweed Polysaccharides-Based Engineered Cues for the Modern Biomedical Sector

Bilal

Iqbal

2019

Marine Drugs

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Seaweed-derived polysaccharides with unique structural and functional entities have gained special research attention in the current medical sector. Seaweed polysaccharides have been or being used to engineer novel cues with biomedical values to tackle in practice the limitations of counterparts which have become ineffective for 21st-century settings. The inherited features of seaweed polysaccharides, such as those of a biologically tunable, biocompatible, biodegradable, renewable, and non-toxic nature, urge researchers to use them to design therapeutically effective, efficient, controlled delivery, patient-compliant, and age-compliant drug delivery platforms. Based on their significant retention capabilities, tunable active units, swelling, and colloidal features, seaweed polysaccharides have appeared as highly useful materials for modulating drug-delivery and tissue-engineering systems. This paper presents a standard methodological approach to review the literature using inclusion-exclusion criteria, which is mostly ignored in the reported literature. Following that, numerous marine-based seaweed polysaccharides are discussed with suitable examples. For the applied perspectives, part of the review is focused on the biomedical values, i.e., targeted drug delivery, wound-curative potential, anticancer potentialities, tissue-engineering aspects, and ultraviolet (UV) protectant potential of seaweed polysaccharides based engineered cues. Finally, current challenges, gaps, and future perspectives have been included in this review.

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“…The overall procedure to obtain polysaccharides from green algae can be divided in several different steps: When working with nature-derived materials, one should always recognise and consider the inherent variability of extracted molecules from sources of natural origin (Jani et al 2009); this can be due to varying extraction methodologies, seasonality or algae species and ecophysiology (Abdel-Fattah and Edrees 1972;Devaki et al 2009;Hernández-Garibay et al 2010;Lahaye and Axelos 1993;Robic et al 2008Robic et al , 2009bYamamoto 1980). One practical example is the variability of the obtained polysaccharide related with source as reported by Lahaye and Axelos (1993), when comparing the rheological behaviour of a polysaccharide obtained from Ulva spp.…”

Section: Extraction Of Ulvan From Green Algaementioning

confidence: 99%

A practical perspective on ulvan extracted from green algae

2012

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Researchers have many times turned their attention to nature and biological processes to develop novel technologies and materials. In a medical perspective, nature-based products are believed to be a strategic alternative approach to the use of fully synthetic materials, particularly in the design of medical devices. In the past decades, marine organisms have become the focus of considerable attention as potential sources of valuable materials. The sustainable exploitation and valorisation of natural marine resources constitutes a highly attractive and strategic platform for the development of novel biomaterials, with both economic and environmental benefits. In this context, algae are known to synthesise large quantities of polysaccharides and are well established sources of these particularly interesting molecules, many of which are known for their applicability in the design of biomaterials. Agar, carrageenan and alginates are some of the most known examples, and their uses can range from food to biomedical applications. However, few of the world's available seaweed species are used commercially. Among the three main divisions of macroalgae (Chlorophyta, Phaeophyta and Rhodophyta), the green algae remain largely unexploited in this biomedical arena. While the demand for novel materials and technologies increases, so does the research of unexploited marine green algae including its unique polysaccharide ulvan.

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Isolation and chemical characterization of algal polysaccharides from the green seaweed Ulva clathrata (Roth) C. Agardh

Abstract: In order to obtain information on the content and composition of the water-soluble polysaccharides from Ulva clathrata, an extraction at 60°C, in different media, was performed: water, EDTA and HCl (F-I), each followed by a sequential extraction in NaOH 0.

Cited by 83 publications

References 27 publications

Chemical characterization of sulfated polysaccharides from Gracilaria gracilis and Ulva lactuca and their radical scavenging, metal chelating, and cholinesterase inhibitory activities

Chemical characterization of sulfated polysaccharides from Gracilaria gracilis and Ulva lactuca and their radical scavenging, metal chelating, and cholinesterase inhibitory activities

Marine Seaweed Polysaccharides-Based Engineered Cues for the Modern Biomedical Sector

A practical perspective on ulvan extracted from green algae

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