Optimisation of ultrasound-assisted extraction of protein from Spirulina platensis using RSM

Yücetepe, Aysun; Saroglu, Oznur; Daşkaya-Dikmen, Ceren; Bildik, Fatih; Özçelik, Beraat

doi:10.17221/64/2017-cjfs

Cited by 38 publications

(17 citation statements)

References 32 publications

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“…The temperature and pH did not significantly influence the polyphenol extraction (p = 0.5568 and 0.2021, respectively). Other authors, such as Yucetepe et al [32], also reported that neither the temperature nor the pH had a significant influence on the UAE of TPC from Spirulina platensis.…”

Section: Antioxidant Capacity and Compoundsmentioning

confidence: 91%

Ultrasound Extraction Mediated Recovery of Nutrients and Antioxidant Bioactive Compounds from Phaeodactylum tricornutum Microalgae

et al. 2021

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In recent years, a growing interest has been shown in the use of microalgae due to their interesting nutritional and bioactive profiles. Green innovative processing technologies such as ultrasound-assisted extraction (UAE) avoid the use of toxic solvents and high temperatures, being a sustainable alternative in comparison with traditional extraction methods. The present study aims to evaluate the recovery of high added-value compounds from Phaedoactylum tricornutum assisted by ultrasound. To optimize the UAE of proteins, carbohydrates, pigments and antioxidant compounds, a response surface methodology was used. Carbohydrate extraction was positively affected by the temperature. However, for the extraction of carotenoids, the most influential factor was the extraction time. The total polyphenols were only significantly affected by the extraction time. Finally, the antioxidant capacity, measured by 2,2′-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS), was strongly modulated by the extraction time, while for the oxygen radical antioxidant capacity (ORAC) assay, the most important parameter was the temperature, followed by the extraction time. The optimal conditions for the maximum extraction of nutrients, bioactive compounds and antioxidant capacity were 30 min, 50 ºC and a pH of 8.5. Finally, it has been seen that with these conditions, the extraction of fucoxanthin is allowed, although no differences were found between an ultrasound-assisted extraction and a shaking extraction (control).

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Section: Antioxidant Capacity and Compoundsmentioning

confidence: 91%

Ultrasound Extraction Mediated Recovery of Nutrients and Antioxidant Bioactive Compounds from Phaeodactylum tricornutum Microalgae

et al. 2021

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“…To overcome this problem, an alternative source with a balanced protein profile and low cost is required [ 113 ]. Protein digestibility of the microalgal protein (S. platensis protein concentration) ranges from 87.5 to 97.8% [ 114 ]. However, certain algae (510–710 g/kg) have more protein than eggs or soybeans (132–370 g/kg) and have fairly comparable EAAs [ 115 ].…”

Section: Microalgae As Fish Mealmentioning

confidence: 99%

An overview of microalgae biomass as a sustainable aquaculture feed ingredient: food security and circular economy

2022

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Sustainable management of natural resources is critical to food security. The shrimp feed and fishery sector is expanding rapidly, necessitating the development of alternative sustainable components. Several factors necessitate the exploration of a new source of environmentally friendly and nutrient-rich fish feed ingredients. Microalgal biomass has the potential to support the growth of fish and shrimp aquaculture for global food security in the bio-economy. Algal biorefineries must valorize the whole crop to develop a viable microalgae-based economy. Microalgae have the potential to replace fish meal and fish oil in aquaculture and ensure sustainability standards. Microalgae biomasses provide essential amino acids, valuable triglycerides such as lipids, vitamins, and pigments, making them suitable as nutritional supplements in livestock feed formulations. Fish and microalgae have similar nutritional profiles, and digestibility is a critical aspect of the aquafeed formulation. A highly digestible feed reduces production costs, feed waste, and the risk of eutrophication. Due to low input costs, low carbon footprint, wastewater treatment benefits, and carbon credits from industrial CO 2 conversion, microalgae-based fish and shrimp feeds have the potential to provide significant economic benefits. However, several challenges must be addressed before microalgal biomass and bioproducts may be used as fish feeds, including heavy metal bioaccumulation, poor algal biomass digestion, and antinutrient effects. Knowledge of biochemical composition is limited and diverse, and information on nutritional value is scattered or contradictory. This review article presents alternative approaches that could be used in aquaculture to make microalgal biomass a viable alternative to fish meal.

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“…It is important to note that the pH employed for extraction plays a fundamental role affecting protein extraction and isolation. For example, in the study of Yucepete et al (2018) [106], the optimal conditions for the extraction of S. platensis proteins were 45 • C, 120 min and neutral pH values, using water as solvent. In contrast, low pH ranges are suitable for protein isolation.…”

Section: Proteinsmentioning

confidence: 99%

Benefits and Drawbacks of Ultrasound-Assisted Extraction for the Recovery of Bioactive Compounds from Marine Algae

Carreira-Casais

Otero

García-Pérez

et al. 2021

IJERPH

110

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The increase in life expectancy has led to the appearance of chronic diseases and interest in healthy aging, in turn promoting a growing interest in bioactive compounds (BCs) and functional ingredients. There are certain foods or products rich in functional ingredients, and algae are one of them. Algae consumption has been nominal in Europe until now. However, in recent years, it has grown significantly, partly due to globalization and the adoption of new food trends. With the aim of obtaining BCs from foods, multiple methods have been proposed, ranging from conventional ones, such as maceration or Soxhlet extraction, to more innovative methods, e.g., ultrasound-assisted extraction (UAE). UAE constitutes a novel method, belonging to so-called green chemistry, that enables the extraction of BCs requiring lower amounts of solvent and energy costs, preserving the integrity of such molecules. In recent years, this method has been often used for the extraction of different BCs from a wide range of algae, especially polysaccharides, such as carrageenans and alginate; pigments, including fucoxanthin, chlorophylls, or β-carotene; and phenolic compounds, among others. In this way, the application of UAE to marine algae is an efficient and sustainable strategy to pursue their deep characterization as a new source of BCs, especially suitable for vegetarian and vegan diets.

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Optimisation of ultrasound-assisted extraction of protein from Spirulina platensis using RSM

Cited by 38 publications

References 32 publications

Ultrasound Extraction Mediated Recovery of Nutrients and Antioxidant Bioactive Compounds from Phaeodactylum tricornutum Microalgae

Ultrasound Extraction Mediated Recovery of Nutrients and Antioxidant Bioactive Compounds from Phaeodactylum tricornutum Microalgae

An overview of microalgae biomass as a sustainable aquaculture feed ingredient: food security and circular economy

Benefits and Drawbacks of Ultrasound-Assisted Extraction for the Recovery of Bioactive Compounds from Marine Algae

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