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List of works by Johann Gorgens

A downstream process for production of a viable and stable Bacillus cereus aquaculture biological agent.

scientific article published in March 2010

A new insight into sugarcane biorefineries with fossil fuel co-combustion: Techno-economic analysis and life cycle assessment

scientific article published in 2018

A review on the demineralisation of pre- and post-pyrolysis biomass and tyre wastes

article

Amberlite IRA 900 versus calcium alginate in immobilization of a novel, engineered β-fructofuranosidase for short-chain fructooligosaccharide synthesis from sucrose

scientific article published on 12 March 2019

Application of endo-β-1,4,D-mannanase and cellulase for the release of mannooligosaccharides from steam-pretreated spent coffee ground.

scientific article

Codon-optimized glucoamylase sGAI of Aspergillus awamori improves starch utilization in an industrial yeast

scientific article published on 27 March 2012

Comparing cytosolic expression to peroxisomal targeting of the chimeric L1/L2 (ChiΔH-L2) gene from human papillomavirus type 16 in the methylotrophic yeasts Pichia pastoris and Hansenula polymorpha

scientific article published on 28 August 2012

Competitive exclusion as a mode of action of a novel Bacillus cereus aquaculture biological agent.

scientific article published on 26 February 2010

Designing industrial yeasts for the consolidated bioprocessing of starchy biomass to ethanol.

scientific article published on March 2012

Direct, simultaneous quantification of fructooligosaccharides by FT-MIR ATR spectroscopy and chemometrics for rapid identification of superior, engineered β-fructofuranosidases.

scientific article published on 27 December 2014

Disturbance modelling through steady-state value deviations: The determination of suitable energy indicators and parameters for energy consumption monitoring in a typical sugar mill

scientific article published in June 2019

Economic and environmental assessment of cellulosic ethanol production scenarios annexed to a typical sugar mill.

scientific article published on 28 October 2016

Engineering Saccharomyces cerevisiae for direct conversion of raw, uncooked or granular starch to ethanol.

scientific article published on 25 March 2014

Enhancing the enzymatic digestibility of sugarcane bagasse through the application of an ionic liquid in combination with an acid catalyst.

scientific article

Enzymatic hydrolysis of spent coffee ground.

scientific article published on 24 February 2013

Ethanol production potential from AFEX™ and steam-exploded sugarcane residues for sugarcane biorefineries.

scientific article published on 4 May 2018

Evaluation of steam-treated giant bamboo for production of fermentable sugars

scientific article published on 29 March 2011

Expression of rotavirus VP6 protein: a comparison amongst Escherichia coli, Pichia pastoris and Hansenula polymorpha.

scientific article published on 14 January 2016

Expression of unique chimeric human papilloma virus type 16 (HPV-16) L1-L2 proteins in Pichia pastoris and Hansenula polymorpha

scientific article published on 24 May 2018

Flowsheet analysis of gasification-synthesis-refining for sustainable aviation fuel production from invasive alien plants

scientific article published in 2022

Fractionation of sugarcane bagasse using a combined process of dilute acid and ionic liquid treatments.

scientific article published on 26 May 2012

Functionality of a Bacillus cereus biological agent in response to physiological variables encountered in aquaculture.

scientific article published on 4 March 2008

Impact of cultivar selection and process optimization on ethanol yield from different varieties of sugarcane

scientific article published on 12 April 2014

Impact of the lignocellulosic material on fast pyrolysis yields and product quality.

scientific article published on 8 October 2013

In situ enzyme aided adsorption of soluble xylan biopolymers onto cellulosic material

scientific article published on 4 February 2016

Incorporating anaerobic co-digestion of steam exploded or ammonia fiber expansion pretreated sugarcane residues with manure into a sugarcane-based bioenergy-livestock nexus

scientific article published on 22 October 2018

Increased Hepatitis B surface antigen production by recombinant Aspergillus niger through the optimization of agitation and dissolved oxygen concentration.

scientific article published on 17 February 2007

Integrated techno-economic and environmental analysis of butadiene production from biomass

scientific article

Isolation and selection of Bacillus spp. as potential biological agents for enhancement of water quality in culture of ornamental fish.

scientific article published in November 2007

Lignin enrichment and enzyme deactivation as the root cause of enzymatic hydrolysis slowdown of steam pretreated sugarcane bagasse.

scientific article published on 25 January 2016

Modifying solubility of polymeric xylan extracted from Eucalyptus grandis and sugarcane bagasse by suitable side chain removing enzymes

scientific article

Multi-product biorefineries from lignocelluloses: a pathway to revitalisation of the sugar industry?

scientific article

Next-generation cellulosic ethanol technologies and their contribution to a sustainable Africa.

scientific article

Opportunities and prospects of biorefinery-based valorisation of pulp and paper sludge

scientific article published on 6 April 2016

Optimization of carbon and nitrogen medium components for biomass production using non-Saccharomyces wine yeasts.

scientific article published on 11 February 2014

Optimization of dilute sulfuric acid pretreatment to maximize combined sugar yield from sugarcane bagasse for ethanol production

scientific article published on 09 October 2013

Opuntia ficus-indica cladodes as feedstock for ethanol production by Kluyveromyces marxianus and Saccharomyces cerevisiae

scientific article

Paper sludge (PS) to bioethanol: Evaluation of virgin and recycle mill sludge for low enzyme, high-solids fermentation

scientific article

Process design and economic analysis of a biorefinery co-producing itaconic acid and electricity from sugarcane bagasse and trash lignocelluloses

scientific article published on 21 April 2018

Production and characterisation of recombinant α-L-arabinofuranosidase for production of xylan hydrogels

article

Progress and challenges in the engineering of non-cellulolytic microorganisms for consolidated bioprocessing

scientific article

Pyrolysis of Lantana camara and Mimosa pigra: Influences of temperature, other process parameters and incondensable gas evolution on char yield and higher heating value

scientific article published on 19 June 2017

Recombinant hepatitis B surface antigen production in Aspergillus niger: evaluating the strategy of gene fusion to native glucoamylase.

scientific article

Relationship between physicochemical properties and enzymatic hydrolysis of sugarcane bagasse varieties for bioethanol production.

scientific article published on 7 January 2015

Screening a random mutagenesis library of a fungal β-fructofuranosidase using FT-MIR ATR spectroscopy and multivariate analysis.

scientific article

Semirational Directed Evolution of Loop Regions in Aspergillus japonicus β-Fructofuranosidase for Improved Fructooligosaccharide Production

scientific article published on 7 August 2015

Simultaneously improving xylose fermentation and tolerance to lignocellulosic inhibitors through evolutionary engineering of recombinant Saccharomyces cerevisiae harbouring xylose isomerase.

scientific article

Single-step microwave-assisted hot water extraction of hemicelluloses from selected lignocellulosic materials - A biorefinery approach.

scientific article

Steam explosion pretreatment of triticale (× Triticosecale Wittmack) straw for sugar production

scientific article published on 15 October 2015

Techno-economic analysis of chemically catalysed lignocellulose biorefineries at a typical sugar mill: Sorbitol or glucaric acid and electricity co-production

scientific article published on 12 June 2019

Techno-economic assessment of integrating methanol or Fischer-Tropsch synthesis in a South African sugar mill.

scientific article published on 17 February 2015

Techno-economic comparison of biojet fuel production from lignocellulose, vegetable oil and sugar cane juice.

scientific article published on 24 May 2016

Techno-economics of integrating bioethanol production from spent sulfite liquor for reduction of greenhouse gas emissions from sulfite pulping mills

scientific article

The influence of sorghum grain decortication on bioethanol production and quality of the distillers' dried grains with solubles using cold and conventional warm starch processing.

scientific article published on 19 December 2015

The metabolic burden of cellulase expression by recombinant Saccharomyces cerevisiae Y294 in aerobic batch culture

scientific article published on 13 April 2012

The metabolic burden of the PGK1 and ADH2 promoter systems for heterologous xylanase production by Saccharomyces cerevisiae in defined medium.

scientific article published in May 2001

Torrefaction of invasive alien plants: Influence of heating rate and other conversion parameters on mass yield and higher heating value.

scientific article

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