Phenolic extract from nejayote flour: bioactive properties and its potential use as an antimicrobial agent of alginate‐based edible coatings

ABSTRACT The iron-sulfur nitroso compound [Fe4S3(NO)7]− is a broad-spectrum antimicrobial agent that has been used for more than 100 years to combat pathogenic anaerobes. Known as Roussin's black salt (RBS), it contains seven moles of nitric oxide, the release of which was always assumed to mediate its cytotoxicity. Using the hyperthermophilic archaeon Pyrococcus furiosus, it is demonstrated through growth studies, membrane analyses, and scanning electron microscopy that nitric oxide does not play a role in RBS toxicity; rather, the mechanism involves membrane disruption leading to cell lysis. Moreover, insoluble elemental sulfur (S0), which is reduced by P. furiosus to hydrogen sulfide, prevents cell lysis by RBS. It is proposed that S0 also directly interacts with the membranes of P. furiosus during its transfer into the cell, ultimately for reduction by a cytosolic NADPH sulfur reductase. RBS is proposed to be a new class of inorganic antimicrobial agent that also has potential use as an inert cell-lysing agent.

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Investigating the Antioxidant and Antimicrobial Activity of Artocarpus heterophyllus Lam. (Jackfruit) Latex

Biointerface Research in Applied Chemistry ◽

10.33263/briac123.30193033 ◽

2021 ◽

Vol 12 (3) ◽

pp. 3019-3033

Keyword(s):

Antimicrobial Activity ◽

Antioxidant Activity ◽

Gas Chromatography Mass Spectrometry ◽

Artocarpus Heterophyllus ◽

Bioactive Properties ◽

Vis Spectroscopy ◽

Antioxidant And Antimicrobial Activity ◽

Layer Chromatography ◽

Potential Use ◽

Plant Latex

Plant latex is well-established as a defensive exudate against natural herbivory. However, its bioactive properties and potential use as a clinical adjunct are not fully explored in the current literature. In this study, latex was procured from Artocarpus heterophyllus Lam. (jackfruit) and subsequently evaluated for its antioxidant and antimicrobial activity. Aqueous extract (AE) and trifluoroethanol extract (TFE) of jackfruit latex were prepared using distilled water and trifluoroethanol. Both extracts were then characterized via thin-layer chromatography (TLC), ultraviolet-visible (UV-Vis) spectroscopy, and gas chromatography-mass spectrometry (GC-MS) analysis. Antimicrobial activity and antioxidant activity were determined for the extracts. Antibacterial activity was exhibited by TFE against P. aeruginosa, S. aureus, and Bacillus sp. The antioxidant activity of AE was significantly higher than TFE.

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Characterization of silver nanoparticles for potential use as antimicrobial agent

VII Latin American Congress on Biomedical Engineering CLAIB 2016, Bucaramanga, Santander, Colombia, October 26th -28th, 2016 - IFMBE Proceedings ◽

10.1007/978-981-10-4086-3_62 ◽

2017 ◽

pp. 245-247

Author(s):

J. Zapata-Giraldo ◽

P. Mena ◽

B. Galeano ◽

N. Escobar ◽

M. Mejía ◽

...

Keyword(s):

Silver Nanoparticles ◽

Antimicrobial Agent ◽

Potential Use

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Nanoemulsions for Edible Coatings: Stabilizing and Bioactive Properties

Practical Applications of Physical Chemistry in Food Science and Technology ◽

10.1201/9781003020004-9 ◽

2020 ◽

pp. 183-198

Author(s):

Miguel De León-Zapata ◽

Lorenzo Pastrana-Castro ◽

Letricia Barbosa-Pereira ◽

María L. Rua-Rodríguez ◽

Janeth Ventura ◽

...

Keyword(s):

Edible Coatings ◽

Bioactive Properties

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Films and edible coatings containing antioxidants - a review

BRAZILIAN JOURNAL OF FOOD TECHNOLOGY ◽

10.1590/bjft.2014.017 ◽

2014 ◽

Vol 17 (2) ◽

pp. 98-112 ◽

Cited By ~ 39

Author(s):

Kaliana Sitonio Eça ◽

Tanara Sartori ◽

Florencia Cecilia Menegalli

Keyword(s):

Fruits And Vegetables ◽

Recent Literature ◽

Natural Antioxidants ◽

Edible Films ◽

Edible Coatings ◽

Synthetic Antioxidants ◽

Bioactive Properties ◽

Wide Range ◽

Pure Compounds ◽

Fresh Cut

The incorporation of natural antioxidants into films and edible coatings can modify their structure, improving their functionality and applicability in foods, such as in fresh-cut fruits. This paper reviews the more recent literature on the incorporation of antioxidants from several sources into films and edible coatings, for application in fruits and vegetables. The use of synthetic antioxidants in foods has been avoided due to their possible toxic effects. Instead, a wide range of natural antioxidants (such as essential oils and plant extracts, as well as pure compounds, like ascorbic acid and α-tocopherol) have been incorporated into edible films and coatings to improve their bioactive properties. Films and coatings containing added antioxidants help to preserve or enhance the sensory properties of foods and add value to the food products by increasing their shelf life.

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Antimicrobial Agents Used in Endodontic Treatment

Acta Medica (Hradec Kralove Czech Republic) ◽

10.14712/18059694.2017.1 ◽

2008 ◽

Vol 51 (1) ◽

pp. 3-12 ◽

Cited By ~ 5

Author(s):

Marina George Kudiyirickal ◽

Romana Ivančaková

Keyword(s):

Antimicrobial Agent ◽

Mechanism Of Action ◽

Root Canal ◽

Antimicrobial Agents ◽

Endodontic Treatment ◽

Microbial Load ◽

Potential Use

Biomechanical preparation alone does not completely eradicate microorganisms from the root canal, hence the next logical step is to perform root canal procedures in conjunction with antimicrobials. The use of an antimicrobial agent improves the efficacy and prognosis of endodontic treatment. This review enumerates the most widely used antimicrobial agents, their mechanism of action and their potential use in reducing the microbial load.

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