Effect of LED light sources on the growth and chemical composition of brown seaweed Treptacantha barbata

Öztaşkent, Cenk; Ak, İlknur

doi:10.1007/s10499-020-00619-9

Cited by 14 publications

(6 citation statements)

References 54 publications

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“…In the work of Li et al [18] it was shown that the chemical composition of the Sargassum fusiforme strain extensively varied during harvest and the highest alginate content was observed in June, whereas the alginate with maximum molecular weight and viscosity was obtained in May. In another study, a brown macroalgae Treptacantha barbata was cultured under four colors of light-emitting diode (LED) light including blue, red, green, and yellow and the blue LED light produced the highest sodium alginate content [19].…”

Section: Alginate Biosynthesis In Algaementioning

confidence: 99%

Algal Alginate in Biotechnology: Biosynthesis and Applications

Yarkent¹,

Guler²,

Gürlek³

et al. 2022

Properties and Applications of Alginates

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Algae are recognized as the main producer of commercial alginate. Alginate produced using algae is located in the walls and intracellular regions of their cells. Its properties vary depending on the species, growing and harvesting seasons, and extraction methods. Alginate has attracted the attention of several industries, thanks to its unique properties such as its biodegradability, biocompatibility, renewability and lack of toxicity features. For example, it is considered a good encapsulation agent due to the transparent nature of the alginate matrices. Also, this biopolymer is recognized as a functional food in the food industry. It can be tolerated easily in human body and has the ability to reduce the risk of chronic diseases. Besides, it is used as an abrasive agent, antioxidant, and thickening and stabilizing agents in cosmetic and pharmaceutic industries. Generally, it is used in emulsion systems and wound dressing patches. Furthermore, this polysaccharide has the potential to be used in green nanotechnologies as a drug delivery vehicle via cell microencapsulation. Moreover, it is suitable to adopt as a coagulant due to its wide range of flocculation dose and high shear stability. In this chapter, the mentioned usage areas of algal alginate are explained in more detail.

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Section: Alginate Biosynthesis In Algaementioning

confidence: 99%

Algal Alginate in Biotechnology: Biosynthesis and Applications

Yarkent¹,

Guler²,

Gürlek³

et al. 2022

Properties and Applications of Alginates

View full text Add to dashboard Cite

show abstract

“…[86] The crude protein content was then calculated by multiplying the nitrogen content by a factor of 6.25, as specified by several authors as well as the AOAC standard method for forages and feed. [2,[87][88][89] Finally, total carbohydrates content was determined by subtracting the moisture, ash, crude protein and crude lipid from the total weight of the sample. [2,90,91] Seaweed pre-treatment…”

Section: Physicochemical Characterisation Of Raw Seaweedmentioning

confidence: 99%

Enhanced Yield of Sodium Alginate Extracted fromPadina gymnosporaUsing a Greener Microwave and Ultrasound Hybrid System

Buxoo,

Ramasawmy,

Jeetah

2023

ChemistrySelect

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In this study, alginate was extracted from Padina gymnospora (PG) by applying the sequential combination of microwaves followed by ultrasounds (at low power and amplitude settings) using an organic acid pre‐treatment. The optimum alginate yield was investigated by varying the type of acid (oxalic and formic) and seaweed particle size range (0.295–0.495 and 0.146–0.246 mm). The extracted sodium alginate was then characterised in terms of FTIR, 1H‐NMR, M/G ratio, viscosity and colour. The synergistic effect of the microwave‐ultrasound hybrid system for short timeframes (15 min each) successfully improved the alginate yield without compromising its structural composition, while allowing for a milder and greener organic acid to be used for the acid pre‐treatment. The highest alginate yield (~64 %) was obtained using formic acid and the smaller particle size range (0.146–0.246 mm). The latter thus highlights the importance of particle size reduction and optimisation. FTIR, NMR and viscosity analyses revealed a low guluronic acid content of alginate with a high M/G ratio (7.7±1.0–9.3±0.1) and low viscosity (2.92±0.09–3.05±0.06 cP), which was found to be inherent to the species used. The proposed novel method therefore opens prospects for the industry since it is both environmentally and economically sustainable.

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“…Non-optimal illumination conditions, such as insufficient or excessive light, can adversely affect the ecology and profits of seaweed farms [ 5 , 6 ]. Moreover, the spectral composition of light regulates various aspects of algal biology, such as the production of photosynthetic pigments, gene expression mediated by photoreceptor signalling pathways, and developmental changes in the algal lifecycle [ 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Interactive Effects of Blue Light and Water Turbulence on the Growth of the Green Macroalga Ulva australis (Chlorophyta)

Lee,

Depuydt,

Shin

et al. 2024

Plants

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Macroalgal growth and yield are key to sustainable aquaculture. Although light and water turbulence are two important factors that affect algal productivity, research on their interaction is limited. Therefore, in this study, we investigated the effects of different wavelengths of light and the presence or absence of water turbulence on the growth of the green macroalga Ulva australis. Water turbulence was found to enhance the growth of U. australis irrespective of photosynthetic performance, but only in blue light cultures. The quantum dose of blue light required to induce 50% growth promotion was 1.02 mol m−2, which is comparable to the reported values for cryptochrome-mediated effects in other macroalgae. The combined effect of blue light and water turbulence led to the accumulation of photosynthesis-related proteins that support plastid differentiation and facilitate efficient photosynthesis and growth. Our findings thus highlight the potential of harnessing blue light and water turbulence to maximise macroalgal cultivation for sustainable and profitable algal aquaculture.

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Effect of LED light sources on the growth and chemical composition of brown seaweed Treptacantha barbata

Cited by 14 publications

References 54 publications

Algal Alginate in Biotechnology: Biosynthesis and Applications

Algal Alginate in Biotechnology: Biosynthesis and Applications

Enhanced Yield of Sodium Alginate Extracted fromPadina gymnosporaUsing a Greener Microwave and Ultrasound Hybrid System

Interactive Effects of Blue Light and Water Turbulence on the Growth of the Green Macroalga Ulva australis (Chlorophyta)

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