Lignin peroxidase functionalities and prospective applications

Abstract

Ligninolytic extracellular enzymes, including lignin peroxidase, are topical owing to their high redox potential and prospective industrial applications. The prospective applications of lignin peroxidase span through sectors such as biorefinery, textile, energy, bioremediation, cosmetology, and dermatology industries. The litany of potentials attributed to lignin peroxidase is occasioned by its versatility in the degradation of xenobiotics and compounds with both phenolic and non‐phenolic constituents. Over the years, ligninolytic enzymes have been studied however; research on lignin peroxidase seems to have been lagging when compared to other ligninolytic enzymes which are extracellular in nature including laccase and manganese peroxidase. This assertion becomes more pronounced when the application of lignin peroxidase is put into perspective. Consequently, a succinct documentation of the contemporary functionalities of lignin peroxidase and, some prospective applications of futuristic relevance has been advanced in this review. Some articulated applications include delignification of feedstock for ethanol production, textile effluent treatment and dye decolourization, coal depolymerization, treatment of hyperpigmentation, and skin‐lightening through melanin oxidation. Prospective application of lignin peroxidase in skin‐lightening functions through novel mechanisms, hence, it holds high value for the cosmetics sector where it may serve as suitable alternative to hydroquinone; a potent skin‐lightening agent whose safety has generated lots of controversy and concern.

Lignocellulose degradation: An overview of fungi and fungal enzymes involved in lignocellulose degradation

“…endocrine disrupting compounds: 17α-ethinylestradiol (EE2)) [27]. HRPs have also been implicated in the cell wall biosynthesis, indole-3-acetic acid (plant growth hormone) catabolism and oxidation of toxic compounds [28].…”

Agrowastes utilization by Raoultella ornithinolytica for optimal extracellular peroxidase activity

“…Peroxidases (EC 1.11.1) oxidize various organic and inorganic substrates with hydrogen peroxide as an electron acceptor . Peroxidases are considerably present in plants, animals, and microbes, and they perform different physiological functions .…”

“…Besides physiological functions, other potential biotechnological applications of peroxidases may be seen in the energy, textile, bioremediation, cosmeceutical, and dermatological sectors . Peroxidases have been applied in the development of biosensors and diagnostic kits .…”

Ligninolytic enzymes: Versatile biocatalysts for the elimination of endocrine‐disrupting chemicals in wastewater

“…Generally, ligninases are characterized by high redox potential for oxidation of phenolic and nonphenolic compounds. As well, they have shown capability for degradation of some recalcitrant compounds including “chlorophenols, polycyclic aromatic hydrocarbons (PAHs), organophosphorus compounds, and phenols” (Wesenberg, Kyriakides, & Agathos, ), thus informing their potentials for diverse industrial and biotechnological applications (Falade et al., ; Husain, ; Mehta, ; Rajasundari & Murugesan, ).…”