Enhanced Vitamin B12 Production using Chlorella vulgaris

Jalilian, Neda; Najafpour, Ghasem; Khajouei, Mohammad

doi:10.5829/ije.2019.32.01a.01

Cited by 9 publications

(4 citation statements)

References 35 publications

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“…produced vitamin B12, the biomass of Chlorella ellipsoidea co-cultured with Brevunmdimonas sp. was 0.5-3 times higher than that of Chlorella ellipsoidea alone (Jalilian et al, 2019;Park et al, 2008). This demonstrated that vitamin B12 provided by heterotrophic bacteria could promote algal growth in the symbiotic system of algae-bacteria, promoting algae photosynthesis.…”

Section: Introductionmentioning

confidence: 85%

Induction of vitamin B12 to purify biogas slurry and upgrade biogas using co‐culture of microalgae and fungi

Liu²,

Zhao

et al. 2021

Water Environment Research

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Different gradient concentrations of vitamin B12 (0, 10, 100, 1,000 ng L−1) were used in the symbiosis system (Chlorella vulgaris–Ganoderma lucidum or Chlorella vulgaris–Pleurotus ostreatus) to assess their effect on simultaneous purification of biogas and removal of nutrients in biogas slurry using co‐culture of microalgae and fungi. When B12 was added to the symbiosis system, biomass growth, intracellular carbonic anhydrase activity (CA), chlorophyll a content (CHL‐a), photosynthetic characteristics of the two cultivation system, and removal efficiency of nutrients in biogas slurry and CO2 in biogas were significantly higher than those in the control group. The optimal concentration of B12 was determined to be 100 ng L−1 considering the removal efficiency of nutrients and CO2. Maximum mean chemical oxygen demand (COD), total nitrogen (TN), total phosphorus (TP), and CO2 removal efficiencies were 75.98 ± 6.26%, 78.46 ± 6.21%, 80.21 ± 6.83% and 61.08 ± 5.21% in Chlorella vulgaris–Ganoderma lucidum, respectively. This study showed the potential of microalgae and fungi symbiosis system with B12 addition for nutrient removal and biogas upgrading. Practitioner points Vitamin B12 had positive effects on algal–fungal pellets growth. The optimal vitamin B12 concentration was 100 ng L−1. The highest CO2 remove rate was 61.08% by G. lucidum/C. vulgaris pellets. Vitamin B12 significantly improved photosynthetic performance of pellets.

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Section: Introductionmentioning

confidence: 85%

Induction of vitamin B12 to purify biogas slurry and upgrade biogas using co‐culture of microalgae and fungi

Liu²,

Zhao

et al. 2021

Water Environment Research

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“…Two cobalamin coenzyme 5′-deoxyadenosylcobalamin and methylcobalamin occurred in green alga C. vulgaris , and the addition of cobalamin significantly stimulated green alga growth (Watanabe et al, 1997 ). Moreover, C. vulgaris grown in Bold's basal medium supplemented with 2 and 2.5 μM CoCl 2 produced 166.23 and 173.32 μg vitamin B 12 per 100 g dry weight (Jalilian et al, 2019 ). Additionally, many algal species require different combinations of cobalamin, vitamin B 1 , and B 7 (Croft et al, 2005 ) as they do not have pathways to synthesize cobalamin or may use alternative cobalamin-independent routes bypassing the need for the vitamin (Cruz-Lopez and Maske, 2016 ; Yao et al, 2018 ).…”

Section: Cobalt Is Essential For Lower Plantsmentioning

confidence: 99%

Cobalt: An Essential Micronutrient for Plant Growth?

et al. 2021

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Cobalt is a transition metal located in the fourth row of the periodic table and is a neighbor of iron and nickel. It has been considered an essential element for prokaryotes, human beings, and other mammals, but its essentiality for plants remains obscure. In this article, we proposed that cobalt (Co) is a potentially essential micronutrient of plants. Co is essential for the growth of many lower plants, such as marine algal species including diatoms, chrysophytes, and dinoflagellates, as well as for higher plants in the family Fabaceae or Leguminosae. The essentiality to leguminous plants is attributed to its role in nitrogen (N) fixation by symbiotic microbes, primarily rhizobia. Co is an integral component of cobalamin or vitamin B12, which is required by several enzymes involved in N2 fixation. In addition to symbiosis, a group of N2 fixing bacteria known as diazotrophs is able to situate in plant tissue as endophytes or closely associated with roots of plants including economically important crops, such as barley, corn, rice, sugarcane, and wheat. Their action in N2 fixation provides crops with the macronutrient of N. Co is a component of several enzymes and proteins, participating in plant metabolism. Plants may exhibit Co deficiency if there is a severe limitation in Co supply. Conversely, Co is toxic to plants at higher concentrations. High levels of Co result in pale-colored leaves, discolored veins, and the loss of leaves and can also cause iron deficiency in plants. It is anticipated that with the advance of omics, Co as a constitute of enzymes and proteins and its specific role in plant metabolism will be exclusively revealed. The confirmation of Co as an essential micronutrient will enrich our understanding of plant mineral nutrition and improve our practice in crop production.

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“…C. vulgaris contains eleven essential vitamins that humans cannot synthesize, including vitamin A, vitamin B1 (thiamine), vitamin B2 (riboflavin), vitamin B3 (niacin), vitamin B5 (pantothenic acid), vitamin B6 (pyridoxine), vitamin B9 (folate), vitamin B12 (cobalamin), vitamin C, vitamin E, and vitamin K [ 165 - 168 ]. Also, minerals promote several biological functions in the human body.…”

Section: Valuable Compounds From Chlorellamentioning

confidence: 99%

Biotechnological Approaches for Biomass and Lipid Production Using Microalgae Chlorella and Its Future Perspectives

Yamaoka

2022

J. Microbiol. Biotechnol.

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Heavy reliance on fossil fuels has been associated with increased climate disasters. As an alternative, microalgae have been proposed as an effective agent for biomass production. Several advantages of microalgae include faster growth, usage of non-arable land, recovery of nutrients from wastewater, efficient CO 2 capture, and high amount of biomolecules that are valuable for humans. Microalgae Chlorella spp. are a large group of eukaryotic, photosynthetic, unicellular microorganisms with high adaptability to environmental variations. Over the past decades, Chlorella has been used for the large-scale production of biomass. In addition, Chlorella has been actively used in various food industries for improving human health because of its antioxidant, antidiabetic, and immunomodulatory functions. However, the major restrictions in microalgal biofuel technology are the cost-consuming cultivation, processing, and lipid extraction processes. Therefore, various trials have been performed to enhance the biomass productivity and the lipid contents of Chlorella cells. This study provides a comprehensive review of lipid enhancement strategies mainly published in the last five years and aimed at regulating carbon sources, nutrients, stresses, and expression of exogenous genes to improve biomass production and lipid synthesis.

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Enhanced Vitamin B12 Production using Chlorella vulgaris

Cited by 9 publications

References 35 publications

Induction of vitamin B12 to purify biogas slurry and upgrade biogas using co‐culture of microalgae and fungi

Induction of vitamin B12 to purify biogas slurry and upgrade biogas using co‐culture of microalgae and fungi

Cobalt: An Essential Micronutrient for Plant Growth?

Biotechnological Approaches for Biomass and Lipid Production Using Microalgae Chlorella and Its Future Perspectives

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