Marine algae colorants: Antioxidant, anti-diabetic properties and applications in food industry

Imchen, Temjensangba

doi:10.1016/j.algal.2022.102898

Cited by 32 publications

(18 citation statements)

References 191 publications

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“…Eutrophication (mainly from N and P) can lead to harmful algal blooms (mainly Cyanophyta), as presented in Figure 8. Therefore, there is an urgent need to identify sustainable approaches for the management of coastal zones in order to prevent eutrophication, such as applying Bacillariophyta and Chlorophyta to inhibit harmful Cyanophyta blooms [32]. Additional strategies include reducing phosphorus input [29], estimating nutrient thresholds [30], monitoring water temperature [31], reducing the abundance of Cyanophyta [32], the integrated risk assessment approach [95], marine green economics [108], and the use of biological nanomaterials for the nanoremediation of polluted water [109].…”

Section: Suggested Sustainable Management Of Eutrophicationmentioning

confidence: 99%

“…Therefore, there is an urgent need to identify sustainable approaches for the management of coastal zones in order to prevent eutrophication, such as applying Bacillariophyta and Chlorophyta to inhibit harmful Cyanophyta blooms [32]. Additional strategies include reducing phosphorus input [29], estimating nutrient thresholds [30], monitoring water temperature [31], reducing the abundance of Cyanophyta [32], the integrated risk assessment approach [95], marine green economics [108], and the use of biological nanomaterials for the nanoremediation of polluted water [109]. It is possible that the blooms that cause this eutrophication could be harvested to provide organic fertilizer for agricultural production or be used directly as a human food source.…”

Section: Suggested Sustainable Management Of Eutrophicationmentioning

confidence: 99%

“…Macroalgae or seaweeds include green algae (Chlorophyta), brown algae (Phaeophyta) and red algae (Rhodophyta). These kinds of seaweed produce several bioactive compounds, which are mainly used as biofertilizers, animal feed, and human foods [32]. Macroalgae are also considered biomonitoring agents due to their limited mobility, significant biomass, simple identification, long life, availability, and their capacity to collect metals [33].…”

Section: Introductionmentioning

confidence: 99%

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Assessment of Bioaccumulation of Heavy Metals and Their Ecological Risk in Sea Lettuce (Ulva spp.) along the Coast Alexandria, Egypt: Implications for Sustainable Management

et al. 2023

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The pollution of aquatic ecosystems is an issue facing many countries all over the world and may result in issues such as eutrophication in coastal zones. Managing this eutrophication is a real challenge. The current study focuses on the investigation and identification of aquatic environmental characteristics, including the sediments, waters, and seaweed, of seven eutrophicated locations along the Mediterranean coast of Alexandria (Egypt). Different ecological risk assessment and bioaccumulation factors were calculated in order to identify the probable pollution source and the degree of the problem, in addition to the accumulation of heavy metals in the seaweed. The characteristics of the seaweed, sediments, and waters were chemically analyzed and heavy metals were measured. The genetically and biochemically identified seaweed species were Ulva compressa, Ulva fasciata, Ulva lactuca and Ulva linzea. The sediments of the El-Tabia location contained the highest concentrations of Cd, Co, Ni, and Pb, because this location receives these elements from the El-Amia drain. The Abu Qir location was found to contain the highest concentrations of the same heavy metals in the studied water samples because it was located much closer to the Abu Qir harbor. Ecological risk assessment indices indicated moderate to high contamination for most of the studied elements and locations. The results of the bioaccumulation factor analysis indicated that the studied seaweed species are accumulators of trace elements. These seaweed species should be further investigated concerning ecotoxicology if they are to be used in the human diet and for other benefits. This study opens many windows of research to be investigated in the future regarding the sustainable management of polluted coastal zones.

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Section: Suggested Sustainable Management Of Eutrophicationmentioning

confidence: 99%

Section: Suggested Sustainable Management Of Eutrophicationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Assessment of Bioaccumulation of Heavy Metals and Their Ecological Risk in Sea Lettuce (Ulva spp.) along the Coast Alexandria, Egypt: Implications for Sustainable Management

et al. 2023

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“…Moreover, it plays a pivotal role in determining consumer preferences 2 . Currently, there is a rising trend towards natural additives with health benefits, resulting in a surge in demand for organic and natural products to replace artificial ingredients in the food industry [3][4][5] .…”

Section: Introductionmentioning

confidence: 99%

Diffusion in Biological Media: A Comprehensive Numerical-Analytical Study via Surface Analysis and Diffusivities Calculation

Pacheco,

Maldonado

2024

Preprint

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This study examines the diffusion of substances through biological porous materials (analytically and numerically) via diffusion coefficients calculation and surface analysis. The research proposes a sweetening Bing-type cherries (Prunus avium) process using a combination of sucrose and xylitol and a staining technique utilising erythrosine and red gardenia at varying concentrations (119, 238 and 357 ppm) and temperatures (40, 50 and 60°C). Given the fruit's epidermis resistance, the effective diffusivities of skin were inferior to those in flesh. Temperature and concentration synergise in enhancing diffusion coefficients and dye penetration within the food matrix (357 ppm and 60°C). Red gardenia displayed significant temperature-dependent variation (p = 0.019), whereas erythrosine dye remained stable by temperature changes (p>0.05). Gardenia's effective diffusivities in cherry flesh and skin, at 357 ppm and 60°C, 2.43E-08 and 4.12E-09 m2/s, respectively, significantly differed from those obtained at lower temperatures and concentrations. The results emphasise the importance of considering temperature-concentration effects on mass transfer calculations for food colouring processes.

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“…The extension of dietary applications of algal extracts covers a large area of interest, where the use of algal powders prevents oxidation through their various classes of compounds: polyphenols, phlorotannins, carotenoids, polysaccharides, and polyunsaturated fatty acids [ 17 ]. The most attractive effects of natural antioxidants are revealed by their dietary use for several diseases [ 18 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Stabilization Activity of Kelp Extract in Ethylene–Propylene Rubber as Safe Packaging Material

Zaharescu¹

2023

Polymers

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This paper presents the stabilization effects of the solid extract of kelp (Ascophyllum nodosum) on an engineering elastomer, ethylene–propylene copolymer (EPR), which may be used as packaging material. Progressive increase in additive loadings (0.5, 1, and 2 phr) increases the oxidation induction time for thermally aged rubber at 190 °C from 10 min to 30 min for pristine material and modified polymer by adding 2 phr protection powder. When the studied polymer is γ-irradiated at 50 and 100 kGy, the onset oxidation temperatures increase as a result of blocking the oxidation reactivity of free radicals. The stabilization effect occurs through the activity of alginic acid, which is one of the main active components associated with alginates. The accelerated degradation caused by γ-exposure advances more slowly when the kelp extract is present. The OOT value for the oxidation of EPR samples increases from 130 °C to 165 °C after the γ-irradiation of pristine and modified (2 phr of kelp powder) EPR, respectively. The altered oxidation state of EPR samples by the action of γ-rays in saline serum is faster in neat polymer than in stabilized material. When the probes are placed in physiological serum and irradiated at 25 kGy, the OOT value for neat EPR (145 °C) is much lower than the homologous value for the polymer samples protected by kelp extract (153 °C for the concentration of 0.5 phr, 166 °C for the concentration of 1 phr, and 185 °C for the concentration of 2 phr).

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Marine algae colorants: Antioxidant, anti-diabetic properties and applications in food industry

Cited by 32 publications

References 191 publications

Assessment of Bioaccumulation of Heavy Metals and Their Ecological Risk in Sea Lettuce (Ulva spp.) along the Coast Alexandria, Egypt: Implications for Sustainable Management

Assessment of Bioaccumulation of Heavy Metals and Their Ecological Risk in Sea Lettuce (Ulva spp.) along the Coast Alexandria, Egypt: Implications for Sustainable Management

Diffusion in Biological Media: A Comprehensive Numerical-Analytical Study via Surface Analysis and Diffusivities Calculation

Stabilization Activity of Kelp Extract in Ethylene–Propylene Rubber as Safe Packaging Material

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