Withdrawn article – Effect of Ultrasonic-Assisted Extraction on Phenolic Content of Freshwater Macroalgae in Northern Thailand

Chimsook, Thitiphan; Wannalangka, Waranya

doi:10.1051/matecconf/20153504002

Cited by 2 publications

(1 citation statement)

References 21 publications

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“…According to Iftikhar et al [47], the bioactive compounds that are responsible for restraining oxidation processes also lead to cardiovascular health. Cladophora produces a wide range of secondary metabolites with significant antioxidant potential, such as tocopherol [48], carotenoids [49], polyphenols [50]. Additional studies have shown the antioxidant potential of Cladophora species.…”

Section: Biomedical Applicationsmentioning

confidence: 99%

Bioactive Compounds from Three Green Algae Species along Romanian Black Sea Coast with Therapeutically Properties

Sîrbu¹,

Negreanu–Pîrjol²,

Mirea³

2020

European Journal of Natural Sciences and Medicine

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During the past years, it became obvious that the ecosystem presents a marine algae excedent, which should be utilized in one way or another. In the marine world, algae have been intensely studied, but the Black Sea seaweeds are not sufficiently harnessed. To survive in such various diverse and extreme environments, macroalgae produce a variety of natural bioactive compounds and metabolites, such as polysaccharides, polyunsaturated fatty acids, and phlorotannins. In the Black Sea there are three species of green algae: Ulvae lactuca sp., Enteromorpha intestinalis and Cladophora sp. The superior exploitation of the marine biomass represents a highly important resource for the pharmaceutical industry, supplying raw material for the extraction of bioactive substances (vitamins, polysaccharides, sterols, phenols and amino-acids) and various other substances. The purity of this compounds is strongly connected to the state of the marine ecosystem. In the present paper are presented the main bioactive compounds existing in the chemical composition of the green algae in the Black Sea studied. The details of the therapeutic properties of the green algae generated by their chemical compositions.

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Section: Biomedical Applicationsmentioning

confidence: 99%

Bioactive Compounds from Three Green Algae Species along Romanian Black Sea Coast with Therapeutically Properties

Sîrbu¹,

Negreanu–Pîrjol²,

Mirea³

2020

European Journal of Natural Sciences and Medicine

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Comparison of Different Extraction Methods for the Recovery of Olive Leaves Polyphenols

et al. 2020

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In the present study, advanced extraction techniques, microwave (MAE), ultrasound (UAE), and high pressure (HPAE)-assisted extraction, were applied to improve extraction efficiency of olive (Olea europaea L.) leaves polyphenols. The effect of sample mass (1.5 and 3 g), MAE—time (2, 8.5, and 15 min) and temperature (45 and 80 °C), UAE—time (7, 14, and 21 min) and amplitude (50 and 100%) and HPAE—time (1, 5.5, and 10 min) and pressure (300 and 500 MPa) on the concentration of each analyzed polyphenol compound was examined. Identified polyphenols were oleuropein, hydroxytyrosol, chlorogenic acid, caffeic acid, verbascoside, and rutin. All three advanced extraction techniques yielded higher content of total polyphenols when compared to the conventional heat-reflux extraction (CE) along with a significant reduction of extraction time from 60 (CE) to 2, 21, and 5.5 min in MAE, UAE, and HPAE, respectively. The most intensive values of tested parameters in each technique were the ones that promoted cell wall disruption, e.g., temperature of 80 °C in MAE, 100% amplitude in UAE and 500 MPa in HPAE. MAE and UAE were more efficient in total polyphenols’ recovery than HPAE.

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Withdrawn article – Effect of Ultrasonic-Assisted Extraction on Phenolic Content of Freshwater Macroalgae in Northern Thailand

Cited by 2 publications

References 21 publications

Bioactive Compounds from Three Green Algae Species along Romanian Black Sea Coast with Therapeutically Properties

Bioactive Compounds from Three Green Algae Species along Romanian Black Sea Coast with Therapeutically Properties

Comparison of Different Extraction Methods for the Recovery of Olive Leaves Polyphenols

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