Microbiological treatment of distillery wastewater focusing on colorant decolorization and resource recovery: a review

Kalra, Anuja; Gupta, Anshu

doi:10.1007/s11157-022-09641-0

Cited by 6 publications

(1 citation statement)

References 149 publications

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“…On the other hand, the textile industry is avidly seeking for enzymes such as laccases, lignin peroxidases and manganese peroxidases, which are useful to degrade and decolorize the dyes it uses and releases to the effluents ( Pérez-Llano et al, 2020b ; Kalra and Gupta, 2022 ). Until now, many genera of fungi have been employed to decolorize a wide range of dyes including species of the Aspergillus genera ( Pan et al, 2017 ; Dhir, 2022 ).…”

Section: Discussionmentioning

confidence: 99%

Extremely chaotolerant and kosmotolerant Aspergillus atacamensis – a metabolically versatile fungus suitable for recalcitrant biosolid treatment

Moreno-Perlin,

Valdés-Muñoz,

Jiménez-Gómez

et al. 2023

Front. Microbiol.

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Obligate halophily is extremely rare in fungi. Nevertheless, Aspergillus atacamensis (strain EXF-6660), isolated from a salt water-exposed cave in the Coastal Range hills of the hyperarid Atacama Desert in Chile, is an obligate halophile, with a broad optimum range from 1.5 to 3.4 M of NaCl. When we tested its ability to grow at varied concentrations of both kosmotropic (NaCl, KCl, and sorbitol) and chaotropic (MgCl2, LiCl, CaCl2, and glycerol) solutes, stereoscopy and laser scanning microscopy revealed the formation of phialides and conidia. A. atacamensis EXF-6660 grew up to saturating levels of NaCl and at 2.0 M concentration of the chaotropic salt MgCl2. Our findings confirmed that A. atacamensis is an obligate halophile that can grow at substantially higher MgCl2 concentrations than 1.26 M, previously considered as the maximum limit supporting prokaryotic life. To assess the fungus’ metabolic versatility, we used the phenotype microarray technology Biolog FF MicroPlates. In the presence of 2.0 M NaCl concentration, strain EXF-6660 metabolism was highly versatile. A vast repertoire of organic molecules (~95% of the substrates present in Biolog FF MicroPlates) was metabolized when supplied as sole carbon sources, including numerous polycyclic aromatic hydrocarbons, benzene derivatives, dyes, and several carbohydrates. Finally, the biotechnological potential of A. atacamensis for xenobiotic degradation and biosolid treatment was investigated. Interestingly, it could remove biphenyls, diphenyl ethers, different pharmaceuticals, phenols, and polyaromatic hydrocarbons. Our combined findings show that A. atacamensis EXF-6660 is a highly chaotolerant, kosmotolerant, and xerotolerant fungus, potentially useful for xenobiotic and biosolid treatments.

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