Deciphering electron-shuttling characteristics of epinephrine and dopamine for bioenergy extraction using microbial fuel cells

Guo, Lili; Qin, Lianjie; Xu, Bin; Wang, Xiaoze; Hsueh, Chung-Chuan; Chen, Bor-Yann

doi:10.1016/j.bej.2019.04.018

Cited by 17 publications

(20 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Table 1 lists several different ESs (e.g., phenazine, riboflavin, phenoxazine, thionine, viologen, quinone, naphthoquinone, anthraquinone, and aminophenol); these compounds have been used as ESs in MFCs to enhance the biodecolorization of azo dyes, as well as bioelectricity generation [7, 16, 17, 20–27]. Because pollutant degradation (e.g., reductive biodegradation) and bioelectricity generation are both associated with electron transfer, the formation or addition of an appropriate ES species can enhance the reductive and oxidative capabilities of an MFC.…”

Section: Chemical Characteristics Of Organic Essmentioning

confidence: 99%

“…Similar concepts may also be applicable to affect ES capabilities. For example, significant redox peaks were only observed in the CV profiles when the hydroxyl or amino groups were arranged at ortho - and para -positions on benzene-based redox mediators such as 2-AP, 4-AP, 1,2-diaminobenzene [23, 26], dopamine [17, 31], catechol, hydroquinone, caffeic acid, and paracetamol [31]. These compounds can show strong ES characteristics.…”

Section: Chemical Characteristics Of Organic Essmentioning

confidence: 99%

“…In fact, Van der Zee et al [16] and Bradley et al [24] also used 1,4-benzoquinone to stimulate color removal and bioelectricity-generating capabilities in MFCs. Moreover, Guo et al [17] recently reported that epinephrine and dopamine, which own ortho -dihydroxyl substituents, significantly enhance the bioelectricity production in MFCs. Possibly, the ortho - and para -positioned hydroxyl/amino groups in these compounds stabilize the radicals and charges in the intermediates (or transition states) of the ESs via resonance effects, thus mediating or accelerating redox reactions.…”

Section: Chemical Characteristics Of Organic Essmentioning

confidence: 99%

“…However, they can still be as reductants to enhance the power density in MFCs [41]. Compared to the antioxidants GA and vitamin C, dopamine and epinephrine as ESs result in significant increases in power generation in MFCs [17]. Moreover, baicalins having 5,6-dihydroxy groups on the A ring display more significant reductive and oxidative potential peaks (i.e., E pc and E pa ) in their CV profiles than those bearing 5,6,7-trihydroxyl groups on the A ring [43]; however, baicaleins have higher free-radical-scavenging capabilities than baicalins [44].…”

Section: Natural Polyphenolics As Essmentioning

confidence: 99%

“…ESs can be either inorganic or organic compounds, such as iodide/triiodide [14] and Fe 3+ [15], quinones [7], and vitamin B 2 [16, 17]. Considering the need for environmental friendliness for sustainable development, organic compounds, both natural and synthetic, with low biotoxicities (e.g., polyphenols or polyhydroxyphenols) are favorable and promising for use as ESs compared to other inorganic species.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Polyphenolic compounds as electron shuttles for sustainable energy utilization

Hsueh

Chen

2019

Biotechnol Biofuels

Self Cite

View full text Add to dashboard Cite

For renewable and sustainable bioenergy utilization with cost-effectiveness, electron-shuttles (ESs) (or redox mediators (RMs)) act as electrochemical “catalysts” to enhance rates of redox reactions, catalytically accelerating electron transport efficiency for abiotic and biotic electrochemical reactions. ESs are popularly used in cellular respiratory systems, metabolisms in organisms, and widely applied to support global lives. Apparently, they are applicable to increase power-generating capabilities for energy utilization and/or fuel storage (i.e., dye-sensitized solar cell, batteries, and microbial fuel cells (MFCs)). This first-attempt review specifically deciphers the chemical structure association with characteristics of ESs, and discloses redox-mediating potentials of polyphenolics-abundant ESs via MFC modules. Moreover, to effectively convert electron-shuttling capabilities from non-sustainable antioxidant activities, environmental conditions to induce electrochemical mediation apparently play critical roles of great significance for bioenergy stimulation. For example, pH levels would significantly affect electrochemical potentials to be exhibited (e.g., alkaline pHs are electrochemically favorable for expression of such electron-shuttling characteristics). Regarding chemical structure effect, chemicals with ortho- and para-dihydroxyl substituents-bearing aromatics own convertible characteristics of non-renewable antioxidants and electrochemically catalytic ESs; however, ES capabilities of meta-dihydroxyl substituents can be evidently repressed due to lack of resonance effect in the structure for intermediate radical(s) during redox reaction. Moreover, this review provides conclusive remarks to elucidate the promising feasibility to identify whether such characteristics are non-renewable antioxidants or reversible ESs from natural polyphenols via cyclic voltammetry and MFC evaluation. Evidently, considering sustainable development, such electrochemically convertible polyphenolic species in plant extracts can be reversibly expressed for bioenergy-stimulating capabilities in MFCs under electrochemically favorable conditions.

show abstract