Optimization of degradation of winery‐derived biomass waste by Ascomycetes

Karpe, Avinash V.; Beale, David J.; Harding, Ian H.; Palombo, Enzo A.

doi:10.1002/jctb.4486

Cited by 28 publications

(27 citation statements)

References 31 publications

(63 reference statements)

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“…A considerable increase of 2‐ketovaline indicated its possible use to produce biofuel molecules such as iso‐butanol by the post‐fermentation application of 2‐keto‐acid decarboxylases after eliminating acetolactate group enzymes . In addition, it has been observed that a pre‐treatment prior to SSF and a mixed fungal degradation considerably increases the biomass degradation. A continuous batch fermentation of the degraded biomass in a simultaneous and/or sequential manner by Saccharomyces cerevisiae , Pichia stipitisi or E. coli has been shown to utilize the mixed pentoses and hexoses generated by A. niger enzymes.…”

Section: Resultsmentioning

confidence: 99%

“…Shiraz was obtained from the Australian Wine Research Institute (AWRI), Glen Osmond, South Australia, Australia. The general composition of Shiraz grape biomass consisted of proteins (2.2%), sugars (1.9%), lignin (35.9%), ash (2.8%) and cellulose–hemicellulose (57.8%) . Further details of the biochemical composition of untreated grape biomass are given in Table S1, Supplementary material.…”

Section: Methodsmentioning

confidence: 99%

“…Some research has been performed on the metabolomics of plant‐fungal parasite relationship for insight into improving plant defence mechanism elements, and as analysing fungal growth inhibition mechanisms of benzoic acid . However, within the context of fungal‐mediated biomass degradation, its application has been rather limited . In addition, analysis of the metabolic flux has the capacity to enable a greater understanding of the nature, time dependence and substrate‐based limitations in regard to the metabolism of fungal cells.…”

Section: Introductionmentioning

confidence: 99%

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Untargeted metabolic profiling of winery-derived biomass waste degradation byAspergillus niger

Karpe

Beale

Godhani

et al. 2015

J. Chem. Technol. Biotechnol.

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BACKGROUND Ascomycetes are capable of considerable lignocellulose degradation. However, there is limited knowledge on the metabolic profile of their biomass degradation. Metabolomic studies are capable of providing important biochemical information to understand and characterise fungal biomass degradation mechanisms. RESULTS Winery biomass waste of Vitis vinifera var. Shiraz was subjected to Aspergillus niger mediated solid state fermentation for 8 days in 2H2O supplemented medium. Samples were collected every 24 h, freeze‐dried and derivatized before GC‐MS analysis. Covariance‐inverse multivariate statistics were used to classify the most significant metabolites. Metabolite‐flux profiling classified 37 unique metabolites in 18 different pathways leading to or from glycolysis‐tricarboxylic acid pathways. The majority of the sugars were consumed during the first 4 days; this was in order to synthesize fatty acids, amino acids and secondary metabolites. Inhibition started at day 5, as indicated by the accumulation of sugars and the plateauing of N‐acetyl glucosamine (a major fungal cell wall component). CONCLUSIONS A 4‐day continuous yeast or mixed fungal fermentation will not only prevent product inhibition, but it will also aid in generating bio‐ethanol. Inducing 2‐keto‐acid decarboxylases followed alcohol dehydrogenases at the onset of inhibition is predicted to aid in the generation of butanol isomers, which are considered valuable sources of fuel. © 2015 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Untargeted metabolic profiling of winery-derived biomass waste degradation byAspergillus niger

Karpe

Beale

Godhani

et al. 2015

J. Chem. Technol. Biotechnol.

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“…There are a few of recent studies which were conducted to use fungi for degrading hemicellulose biomass from winery (Karpe et al, 2015a(Karpe et al, , 2015b. There is a need to develop a technology for conversion of winery wastes to value-added products, leading to sustainable waste management strategy.…”

Section: Introductionmentioning

confidence: 99%

A biotech-systematic approach to select fungi for bioconversion of winery biomass wastes to nutrient-rich feed

Jin

Zepf

Zhang

et al. 2016

Process Safety and Environmental Protection

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Digestibility Fungi Protein enrichmentWinery biomass waste Solid state fermentation a b s t r a c t Grape marc and lees are main waste biomass in wine industry, which contain substantial amount of carbohydrates and nutrients, but currently deliver considerable carbon emission through landfill in Australia. This study was aimed to develop a biotechnological systematic approach to select suitable fungi for bioconversion of the winery biomass wastes into animal feed. The biotech-systematic approach was developed through assessment of nutrient/carbon source accessibility of the fungi, understanding of their metabolic reactions in solid state fermentation, and nutritive value of the fungi-fermented grape marc. From 13Aspergillus, Rhizopus, and Trichoderma fungal species, A. oryzae DAR 3699, A. oryzae RIB40 and T. reesei RUT C30 were determined as the best fungi due to their promising biochemical capabilities to enhance protein contents and in vitro digestibility of grape marc in mono-and co-cultivations. The mono-fungous-cultured SSF process used these selected fungi is able to convert grape marc to nutrient-rich feed by increasing the protein contents from ∼5% to 26% and the digestibility from ∼25% to over 50%. R. oligosporus 2710 with R. oryzae 6201 or T.viride 15719 showed promising protein enrichment to 18-23% and digestibility improvement by ∼50% in their co-cultivations. This preliminary bioengineering strategy will be useful for selecting microorganisms for the bioconversion of organic wastes to high valuable products.This "green cycle" bioprocess will be useful to promote the old-fashioned waste treatment technologies for the cleaner production in food processing industries.

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“…Metabolomics has been applied to understand metal corrosion and metals in the environment (Beale et al, 2010;Jones et al, 2015), food contamination , general fungal and yeast metabolism (Brown et al, 2013;Christensen & Nielsen, 2000;Larsson, Snoep, Norbeck, & Albers, 2011;Niklas, Schneider, & Heinzle, 2010;Si, Luo, Xiao, & Zhao, 2014), and fungal based biomass degradation (Karpe, Beale, Harding, & Palombo, 2015). Furthermore, quantitative and qualitative metabolic profiling and flux analysis methods have been used to indicate the consumption of various substrates and relevant product generation.…”

Section: Mic Biofilm Metabolome and Metabolomicsmentioning

confidence: 99%

Omics-based approaches and their use in the assessment of microbial-influenced corrosion of metals

Beale

Karpe²,

Jadhav

et al. 2016

Corrosion Reviews

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Microbial-influenced corrosion (MIC) has been known to have economic, environmental, and social implications to offshore oil and gas pipelines, concrete structures, and piped water assets. While corrosion itself is a relatively simple process, the localised manner of corrosion makes in situ assessments difficult. Furthermore, corrosion assessments tend to be measured as part of a forensic investigation. Compounding the issue further is the impact of microbiological/biofilm processes, where corrosion is influenced by the complex processes of different microorganisms performing different electrochemical reactions and secreting proteins and metabolites that can have secondary effects. While traditional microbiological culture-dependent techniques and electrochemical/physical assessments provide some insight into corrosion activity, the identity and role of microbial communities that are related to corrosion and corrosion inhibition in different materials and in different environments are scarce. One avenue to explore MIC and MIC inhibition is through the application of omics-based techniques, where insight into the bacterial population in terms of diversification and their metabolism can be further understood. As such, this paper discusses the recent progresses made in a number of fields that have used omics-based applications to improve the fundamental understanding of biofilms and MIC processes.

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Optimization of degradation of winery‐derived biomass waste by Ascomycetes

Cited by 28 publications

References 31 publications

Untargeted metabolic profiling of winery-derived biomass waste degradation byAspergillus niger

Untargeted metabolic profiling of winery-derived biomass waste degradation byAspergillus niger

A biotech-systematic approach to select fungi for bioconversion of winery biomass wastes to nutrient-rich feed

Omics-based approaches and their use in the assessment of microbial-influenced corrosion of metals

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