Utilization of cellulose and ulvan from the green seaweed Ulva lactuca in the development of composite edible films with natural antioxidant properties

Gomaa, Mohamed; Al-Badaani, Arwa A.; Hifney, Awatief F.; Adam, Mahmoud S.

doi:10.1007/s10811-022-02786-z

Cited by 38 publications

(12 citation statements)

References 42 publications

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“…Waste office paper (5 g) was dissolved in 100 mL of ice-cold aqueous mixture of 7% w/v of NaOH and 12% w/v of NH 2 CONH 2 under vigorous shaking (Fawzy and Gomaa 2020 ). Then acetic acid (4% v/v) was added to the mixture to precipitate cellulose (Gomaa et al 2022 ). Subsequently, the regenerated cellulose (RC) from wastepaper was collected by filtration and washed several times with distilled to reach neutrality.…”

Section: Methodsmentioning

confidence: 99%

Macroalgal-derived alginate/wastepaper hydrogel to alleviate sunflower drought stress

Gomaa

Aldaby

2023

Planta

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Main conclusion Alginate/wastepaper hydrogel mitigated sunflower drought stress by increasing the water holding capacity of the soil and decreasing phosphate leaching. The hydrogel promoted sunflower growth and decreased stress related biomarkers. Abstract There is a growing interest in the development of biodegradable hydrogels for the alleviation of drought stress on plants. A novel hydrogel based on brown algal-derived alginate and wastepaper was developed and tested as a soil supplement for sunflower growth under moderate (75% field capacity (FC)) and extreme (50% FC) water-deficit stress. The hydrogel showed fast swelling in water, which obeyed the pseudo-first order kinetics. Besides, it increased the water holding capacity of the soil and exhibited a good phosphate adsorption (37 mg PO4− g−1 hydrogel after 6 days) in the soil, and more than 67% of the adsorbed phosphate was desorbed after 20 days. Thus, the phosphate leaching from the hydrogel-amended soil in a column experiment was only 2.77 mg after 4 times of over-irrigation, compared to 11.91 mg without the hydrogel. The hydrogel application promoted various root traits such as fresh and dry biomass, area, and length by > 2-, > 1.6-, > 1.35-, and > 1.3-folds under both water regimes in relation to the no-hydrogel treatments at the same conditions. Furthermore, the sunflower shoots exhibited similar proline contents to the well-watered control (100% FC), with > 50% reduction in relation to the drought-stressed plants under the same conditions. Similarly, the malondialdehyde contents were lowered by > 15%. The analysis of the antioxidant enzymes also indicated a marked reduction in the specific activities of catalase and ascorbate peroxidase under both 75 and 50% FC compared to the respective controls. Additionally, the hydrogel promoted the uptake of phosphate by sunflower roots. These results implied that the developed biodegradable hydrogel could be effectively applied as a soil additive to alleviate drought stress on crops.

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Section: Methodsmentioning

confidence: 99%

Macroalgal-derived alginate/wastepaper hydrogel to alleviate sunflower drought stress

Gomaa

Aldaby

2023

Planta

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“…The antioxidant properties and thermal stability had improved significantly at higher contents of ulvan. 214…”

Section: Bioplastics From Ulvanmentioning

confidence: 99%

Seaweed-based polysaccharides – review of extraction, characterization, and bioplastic application

Krishnan,

Ravi,

Kumar Mondal

et al. 2024

Green Chem.

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“…Antimicrobial, Antioxidant, and Anticoagulant activities [192] Ulva lactuca Ulvan Antioxidant properties, Cytotoxic activity Anti-proliferative and Apoptotic effects [193][194][195] Ulva armoricana Ulvan Antiviral and Antioxidant activities [196] Table 2. Cont.…”

Section: Hypnea Valentiae Carrageenanmentioning

confidence: 99%

Rehashing Our Insight of Seaweeds as a Potential Source of Foods, Nutraceuticals, and Pharmaceuticals

Baghel,

Choudhary,

Pandey

et al. 2023

Foods

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In a few Southeast Asian nations, seaweeds have been a staple of the cuisine since prehistoric times. Seaweeds are currently becoming more and more popular around the world due to their superior nutritional value and medicinal properties. This is because of rising seaweed production on a global scale and substantial research on their composition and bioactivities over the past 20 years. By reviewing several articles in the literature, this review aimed to provide comprehensive information about the primary and secondary metabolites and various classes of bioactive compounds, such as polysaccharides, polyphenols, proteins, and essential fatty acids, along with their bioactivities, in a single article. This review also highlights the potential of seaweeds in the development of nutraceuticals, with a particular focus on their ability to enhance human health and overall well-being. In addition, we discuss the challenges and potential opportunities associated with the advancement of pharmaceuticals and nutraceuticals derived from seaweeds, as well as their incorporation into different industrial sectors. Furthermore, we find that many bioactive constituents found in seaweeds have demonstrated potential in terms of different therapeutic attributes, including antioxidative, anti-inflammatory, anticancer, and other properties. In conclusion, seaweed-based bioactive compounds have a huge potential to play an important role in the food, nutraceutical, and pharmaceutical sectors. However, future research should pay more attention to developing efficient techniques for the extraction and purification of compounds as well as their toxicity analysis, clinical efficacy, mode of action, and interactions with regular diets.

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Utilization of cellulose and ulvan from the green seaweed Ulva lactuca in the development of composite edible films with natural antioxidant properties

Cited by 38 publications

References 42 publications

Macroalgal-derived alginate/wastepaper hydrogel to alleviate sunflower drought stress

Macroalgal-derived alginate/wastepaper hydrogel to alleviate sunflower drought stress

Seaweed-based polysaccharides – review of extraction, characterization, and bioplastic application

Rehashing Our Insight of Seaweeds as a Potential Source of Foods, Nutraceuticals, and Pharmaceuticals

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