Bioinspired Magneto-optical Bacteria

Carmona, Fernando; Martín, Miguel; Gálvez, Natividad; Domínguez‐Vera, José M.

doi:10.1021/ic501146r

Cited by 8 publications

(10 citation statements)

References 38 publications

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“…Chemical structure of p-hydroxyphenyllactic acid HPLA. , which are quite reduced in the presence of L. fermentum (Carmona, Martin, Galvez, & Dominguez-Vera, 2014;González, Gálvez, Clemente-León, & Domínguez-Vera, 2015). This result indicates that the chemical reducing mechanism of L. fermentum does not solely contain HPLA but also other reducing molecules.…”

Section: Lactobacillus Fermentum Shows a High Ferric-reducing Activitymentioning

confidence: 77%

Identification of the key excreted molecule by Lactobacillus fermentum related to host iron absorption

et al. 2017

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We have taken a vital step towards understanding why probiotic bacteria increase iron absorption in the gastrointestinal tract. We show here that Lactobacillus fermentum, one of the main probiotics of the microbiota, exhibits an extraordinary ferric-reducing activity. This activity is predominantly due to an excreted molecule: p-hydroxyphenyllactic acid (HPLA). Reduction of Fe(III) to Fe(II) is essential for iron absorption in the gastrointestinal tract. By reducing Fe(III), HPLA boosts Fe(II) absorption through the DMT1 channels of enterocytes. An in vitro experiment tested and confirmed this hypothesis. This discovery opens new avenues for the treatment of iron deficiency in humans, one of the most common and widespread nutritional disorders in the world.

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Section: Lactobacillus Fermentum Shows a High Ferric-reducing Activitymentioning

confidence: 77%

Identification of the key excreted molecule by Lactobacillus fermentum related to host iron absorption

et al. 2017

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“…In another study by Carmona et al magneto-optical bacteria were produced using probiotic Lactobacillus fermentum [ 43 ]. By exploiting metal-reduction properties (to produce gold nanoparticles) and their capacity to incorporate iron oxide nanoparticles at their external surface, they reported living magneto-optical bacteria behaving as a magnet at room temperature.…”

Section: Bacteria and Yeastmentioning

confidence: 99%

Nanoparticle Synthesis by Biogenic Approach

Srivastava

Ogino

Kondo

2015

Green Processes for Nanotechnology

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Biological synthesis of nanoparticles has been present in living organisms over the course of evolution to serve a variety of purposes. In this chapter, we discuss the latest trends and application for nanoparticle synthesis via plants, algae, yeast, bacteria, fungi, etc. There exists several review articles among others documenting studies about various biogenic sources and associated nanoparticle synthesis; we have rather emphasized on recent research works which probed into novel applications of these bio-nanoparticles along with some important historical fi ndings. Also, we have discussed the challenges faced by biogenic methods along with possible areas to tweak in order to standardize this synthesis technique. Biogenic synthesis of nanoparticles has the potential to provide cost-effective, eco-friendly alternative to work as "biological nanofactories"/functionalization method once the attention has been shifted to understand the underlying mechanism, its in vitro replication and obtaining shape/size control over the nanoparticles being synthesized.

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“…We have previously demonstrated that iron oxide and gold nanoparticles can be incorporated within the exopolysaccharide matrix (EPS) of some probiotic bacteria leading to live, hybrid probiotic-NPs materials [15,16]. EPS are natural polysaccharides secreted by some bacteria.…”

Section: Introductionmentioning

confidence: 99%

“…The biosynthesis of metallic nanoparticles using microorganisms as reducing agents has gained popularity in recent decades as it presents several advantages over traditional synthetic methods [22,23]. There are other microorganisms with this reducing capacity, including several probiotic bacteria such as Lactobacillus fermentum [16].…”

Section: Introductionmentioning

confidence: 99%

Magnetic and Golden Yogurts. Food as a Potential Nanomedicine Carrier

et al. 2020

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Yogurt is one of the most emblematic and popular fermented foods. It is produced by the fermentation of milk lactose by bacteria such as Streptococcus thermophilus and Lactobacillus acidophilus. Magnetic (MNPs) and gold nanoparticles (AuNPs) were incorporated into the exopolysaccharides (EPSs) of these bacteria. The functionalized bacteria were characterized by UV-vis spectroscopy and transmission electron microscopy. A large number of MNPs and AuNPs were bound to the bacterial EPS. Interestingly, the nanoparticles’ (NPs) presence did not affect the bacteria’s capacity to ferment milk and to produce magnetic and golden yogurts. Magnetic and golden yogurts represent the perfect combination of emblematic food and nanoparticles and have a range of potential biomedical applications: use in iron-deficiency anemia, diagnosis and hyperthermia treatment of appropriate digestive diseases, and interest in glamour cuisine.

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Bioinspired Magneto-optical Bacteria

Cited by 8 publications

References 38 publications

Identification of the key excreted molecule by Lactobacillus fermentum related to host iron absorption

Identification of the key excreted molecule by Lactobacillus fermentum related to host iron absorption

Nanoparticle Synthesis by Biogenic Approach

Magnetic and Golden Yogurts. Food as a Potential Nanomedicine Carrier

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