The effect of audible sound frequency on the growth and beta-carotene production of Dunaliella salina

Keramati, Arezoo; Shariati, Farshid Pajoum; Tavakoli, Omid; Akbari, Zahra; Rezaei, Mahnaz

doi:10.1016/j.sajb.2021.05.026

Cited by 9 publications

(7 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similarly, ultrasound (33 kHz and 1.4 bar at 10% duty cycle) increased β-carotene levels in T. obliquus SGM19 by 31.5% when compared to a control [79]. A recent study found that combining audible sound vibrations (200 Hz) and nitrate deficiency increased β-carotene levels in D. salina by 37% when compared to a control (no sound vibrations and no nitrate deprivation) [63]. This increase in β-carotene levels was attributed to the beneficial effects of audible soundwaves through an increase in cell wall thickness and cell division, enhancing the alga's survival under suboptimal nutrient conditions [63].…”

Section: Synthesis Of Provitamin a (β-Carotene) By Algaementioning

confidence: 93%

“…A recent study found that combining audible sound vibrations (200 Hz) and nitrate deficiency increased β-carotene levels in D. salina by 37% when compared to a control (no sound vibrations and no nitrate deprivation) [63]. This increase in β-carotene levels was attributed to the beneficial effects of audible soundwaves through an increase in cell wall thickness and cell division, enhancing the alga's survival under suboptimal nutrient conditions [63]. Furthermore, the addition of molybdenum disulfide nanoparticles (MoS 2 NPs) with high light irradiance (600 µmol photons/m 2 ) increased β-carotene accumulation in D. salina 1.47-fold over the control due to improved quenching of reactive oxidative species (ROS) [64].…”

Section: Synthesis Of Provitamin a (β-Carotene) By Algaementioning

confidence: 99%

See 1 more Smart Citation

The Prospects of Algae-Derived Vitamins and Their Precursors for Sustainable Cosmeceuticals

Arora

Philippidis

2023

Processes

View full text Add to dashboard Cite

Aquatic algae are a rich source of a wide range of bioproducts intended to compete for a sizable global market share. Thanks to the gradual shift towards the use of natural products, microalgae-derived bioactive compounds offer an ecofriendly and vegan option to the cosmeceutical sector, whose products aim to improve skin health but currently consist of mostly synthetic chemicals. In particular, algae-derived vitamins and their precursors are being explored and widely used in the cosmeceuticals industry as compounds that contain biologically active ingredients with therapeutic benefits. The present review highlights the current strategies for industrial production of an array of vitamins from algae for cosmeceutical applications. When compared to traditional plant sources, algae have been found to accumulate vitamins, such as A, B1, B2, B6, B12, C and E, in high concentrations. The purpose of this review is to provide context for the development of a green and sustainable algae-derived bioeconomy by summarizing and comparing the current market for vitamins and precursors derived from algae, as well as presenting novel strategies and key findings from the most recent research in this area. Emphasis is placed on novel biotechnological interventions that encompass genetic modifications, genetic engineering, and media development to enhance vitamin biosynthesis.

show abstract

Section: Synthesis Of Provitamin a (β-Carotene) By Algaementioning

confidence: 93%

Section: Synthesis Of Provitamin a (β-Carotene) By Algaementioning

confidence: 99%

The Prospects of Algae-Derived Vitamins and Their Precursors for Sustainable Cosmeceuticals

Arora

Philippidis

2023

Processes

View full text Add to dashboard Cite

show abstract

“…Acoustic frequency and strength matters, as per the microbial outcomes. For example, Keramati et al [57] illustrated in their review that ultrasound (greater than 20 kHz) exposure can produce destruction or alteration of many bacteria while increasing the growth of yeast, and infrasound (frequency below 20 Hz) can likewise decrease certain bacteria's growth but increase the growth of other microbes. In turn, sound frequencies can be used to optimize a variety of applications including the following: rebiosis/reversing microbial dysbiosis-promoted disease as well as aspects of everyday life (e.g., fermented food and beverage production, enhanced soil for crops/gardening, microbe-driven pollution cleanup, fuel cell efficiencies, and other bioelectric generation applications).…”

Section: Sound and Acoustics: Effects On Microbiota And Beyondmentioning

confidence: 99%

Examining Sound, Light, and Vibrations as Tools to Manage Microbes and Support Holobionts, Ecosystems, and Technologies

Dietert,

Dietert

2024

Microorganisms

View full text Add to dashboard Cite

The vast array of interconnected microorganisms across Earth’s ecosystems and within holobionts has been called the “Internet of Microbes.” Bacteria and archaea are masters of energy and information collection, storage, transformation, and dissemination using both “wired” and wireless (at a distance) functions. Specific tools affecting microbial energy and information functions offer effective strategies for managing microbial populations within, between, and beyond holobionts. This narrative review focuses on microbial management using a subset of physical modifiers of microbes: sound and light (as well as related vibrations). These are examined as follows: (1) as tools for managing microbial populations, (2) as tools to support new technologies, (3) as tools for healing humans and other holobionts, and (4) as potential safety dangers for microbial populations and their holobionts. Given microbial sensitivity to sound, light, and vibrations, it is critical that we assign a higher priority to the effects of these physical factors on microbial populations and microbe-laden holobionts. We conclude that specific sound, light, and/or vibrational conditions are significant therapeutic tools that can help support useful microbial populations and help to address the ongoing challenges of holobiont disease. We also caution that inappropriate sound, light, and/or vibration exposure can represent significant hazards that require greater recognition.

show abstract

“…Acoustic frequency and strength matters as per the microbial outcomes. For example, Keramati et al [58] illustrated in their review that ultrasound (greater than 20 kHz) exposure can produce destruction or alteration of many bacteria while increasing the growth of yeast and infrasound (frequency below 20 Hz) can likewise decrease certain bacteria growth but increase the growth of other microbes. In turn, sound frequencies can be used to optimize a variety of applications including: rebiosis/reversing microbial dysbiosis-promoted disease as well as aspects of everyday life (e.g., fermented food and beverage production, enhanced soil for crops/gardening, microbe-driven pollution cleanup, fuel cell efficiencies, and other bioelectric generation applications).…”

Section: Sound and Acoustics: Effects On Microbiota And Beyondmentioning

confidence: 99%

“…Table 1 illustrates examples of both review articles and research studies on auditory sound affecting microbial populations [15,16,57,58,[61][62][63][64][65][66][67][68][69][70][71][72][73]. Wine Grapes, Vitis vinifera L. (cultivar "Syrah"), were planted with one group exposed to classical music 24/7 for the entire growing season while the control was out of range of the music.…”

Section: Sound and Acoustics: Effects On Microbiota And Beyondmentioning

confidence: 99%

Examining Sound, Light, and Vibrations as Tools to Manage Microbes and Support Holobionts, Ecosystems, and Technologies

Dietert,

Dietert

2024

Preprint

View full text Add to dashboard Cite

The vast array of interconnected microbes across earth’s ecosystems and within holobionts has been called the “Internet of Microbes.” Research into the fundamental microbial properties has demonstrated that bacteria and archaea are masters of energy and information collection, storage, transformation, and dissemination using both “wired” and wireless (at a distance) capacities. These features suggest that microbes are quantum entangled within and between earth’s holobionts, and that specific tools affecting energy and information functions could provide an effective strategy for managing microbial populations. Microbes use four critically important microbial networking functions (sound, light, electricity, and magnetism). This narrative review focuses on microbial management based on two of the four: sound and light (as well as related vibrations). These are examined as: 1) tools for managing microbial populations, 2) tools to support new technologies, and 3) tools for healing humans and other holobionts. Given microbial sensitivity to sound, light, and vibrations, it is critical that microbial populations and microbe-laden holobionts are protected from potentially damaging exposures. We conclude that sound, light, and vibrations are useful therapeutic tools that can help support useful microbial populations and help to address ongoing challenges of holobiont disease.

show abstract

The effect of audible sound frequency on the growth and beta-carotene production of Dunaliella salina

Cited by 9 publications

References 55 publications

The Prospects of Algae-Derived Vitamins and Their Precursors for Sustainable Cosmeceuticals

The Prospects of Algae-Derived Vitamins and Their Precursors for Sustainable Cosmeceuticals

Examining Sound, Light, and Vibrations as Tools to Manage Microbes and Support Holobionts, Ecosystems, and Technologies

Examining Sound, Light, and Vibrations as Tools to Manage Microbes and Support Holobionts, Ecosystems, and Technologies

Contact Info

Product

Resources

About