Mrs Laurinda Steyn
Position
Lecturer
Department
Microbiology and Biochemistry
Address
BTG A55
Biotechnology
IB 61
R6271
Telephone
0514017468
Office
A55
Information

Short CV

Publications

 Researcher ID

Journal Publications

Oosthuizen L, Charimba G, Hitzeroth A, Nde AL, Steyn L, Newman J, Hugo C (2019) Chryseobacterium pennipullorum sp. nov., isolated from poultry feather waste. Int J Syst Evol Microbiol DOI: 10.1099/ijsem.0.003491. Impact Factor: 2.166

Jiru TM, Steyn L, Pohl C, Abate D (2018) Production of single cell oil from cane molasses by Rhodotorula kratochvilovae (syn, Rhodosporidium kratochvilovae) SY89 as a biodiesel feedstock. Chem Cent J 12(1)91. DOI: 10.1186/s13065-018-0457-7. Impact factor 1.22

Jiru TM, Groenewald M, Pohl C, Steyn L, Kiggundu N, Abate D (2017): Optimization of cultivation conditions for biotechnological production of lipid by Rhodotorula kratochvilovae (syn, Rhodosporidium kratochvilovae) SY89 for biodiesel preparation. 3 Biotech; 2/145. DOI: 10.1007/s13205-017-0769-7. Impact Factor: 1.361

Schabort DWP, Letebele PK, Steyn L, Kilian SG, du Preez JC (2016) Differential RNA-seq, Multi-Network Analysis and Metabolic Regulation Analysis of Kluyveromyces marxianus reveals a Compartmentalised Response to Xylose. PLoS ONE, 11(6). DOI:10.1371/journal.pone.0156242 Impact Factor: 2.806

Bekker A, Steyn L, Charimba G, Jooste P, Hugo C (2015) Comparison of the growth kinetics and proteolytic activities of Chryseobacterium species and Pseudomonas fluorescens. Can J Microbiol DOI: 10.1139/cjm-2015-0236 Impact Factor: 1.335

Bekker A, Jooste P, Steyn L, Bothma C, Hugo A, Hugo C (2015) Lipid breakdown and sensory analysis of milk inoculated with Chryseobacterium joostei or Pseudomonas fluorescens. Int Dairy J; 52. DOI:10.1016/j.idairyj.2015.09.003. Impact Factor: 2.067

Akanni GB, du Preez JC, Steyn L, Kilian SG (2014): Protein enrichment of an Opuntia ficus-indica cladode hydrolysate by cultivation of Candida utilis and Kluyveromyces marxianus. J Sci Food Agric; 95(5). DOI:10.1002/jsfa.6985. Impact Factor: 1.714

Kuloyo OO, du Preez JC, Del Prado García-Aparicio M, Kilian SG, Steyn L, Görgens J (2014) Opuntia ficus-indica cladodes as feedstock for ethanol production by Kluyveromyces marxianus and Saccharomyces cerevisiae. World J Microbiol Biotech; 30(12). DOI: 10.1007/s11274-014-1745-6. Impact Factor: 1.658

OO Ezekiel, OC Aworth, JC du Preez, L Steyn: Cultivation of Candida utilis on cassava peel hydrolysates for single-cell protein production. Journal of Food Science and Engineering 2 / 2012; 452-461

  

Conference Proceedings

Cason ED, Valverde A, Viljoen B, Vermeulen J, Vermeulen M, Steyn L, de Smidt O, Malefane M (2019) Unravelling the microbiome of Sesotho (traditional Lesotho sorghum beer) through targeted metagenomics. FEMS 2019, Glasgow, Scotland. 7-11 July 2019 PW404.

Nde AL, Charimba G, Hitzeroth A, Oosthuizen L, Steyn L, Newman J, Hugo C (2019) Whole-genome sequencing of a novel Chryseobacterium strain isolated from poultry feather waste. FEMS 2019, Glasgow, Scotland. 7-11 July 2019 PT403.

Oosthuizen L, Charimba G, Hitzeroth A, Lum Nde A, Steyn L, Newman J, Hugo C (2019) Chryseobacterium pennipullorum sp. nov., isolated from poultry feather waste. FEMS 2019, Glasgow, Scotland. 7-11 July 2019. PT404.

Dithebe K, van Wyk PWJ, Steyn L, Pohl CH (2018) Characterization of intracellular gas bubbles in Saccharomyces. SASM 2018. Muldersdrift, South Africa. 4-7 April 2018.

Steyn L, du Preez JC, Albertyn J, de Smidt O (2014) Phenotypic analysis of multiple ADH deletion mutants of Saccharomyces cerevisiae. ISSY 2014, Nova Gorica & Vipava, Slovenia. 9 - 12 October. Presentation.

Steyn L, du Preez JC, Albertyn J, de Smidt O (2013) Phenotype microarray analysis of multiple ADH deletion mutants of Saccharomyces cerevisiae. FEMS 2013, Leipzig, Germany. 21-25 July 2013. Poster.

du Preez JC, Steyn L, de Smidt O, Albertyn J (2012) The physiological role of alcohol dehydrogenase 5 during chemostat cultivation of Saccharomyces cerevisiae ICY 2012, Madison, Wisconsin, USA September.

Bekker A, Hugo C, Jooste P, Steyn L (2011) Effect of temperature on growth and proteolytic activity of Chryseobacterium in milk. SASM 2011, Cape Town, South Africa.

Alkani G, du Preez JC, Steyn L, Kilian SG (2011) Evaluation of yeast single-cell protein production using a hydrolysate of Opuntia ficus-indica biomass as carbon feedstock. SASM 2011, Cape Town, South Africa.

Meyer A, du Preez JC, Steyn L, Kilian SG (2011) The critical dissolved oxygen level in respect of glucose and xylose utilisation by Kluyveromyces marxianus. SASM 2011, Cape Town, South Africa.

Steyn L, de Smidt O, du Preez JC, Albertyn J, Kilian SG (2011) The physiological role of alcohol dehydrogenase 5 (ADH5p) isozyme in Saccharomyces cerevisiae. SASM 2011, Cape Town, South Africa.

Kuloyo O, Steyn L, du Preez JC (2011) A comparative evaluation of Kluyveromyces marxianus and Saccharomyces cerevisiae for biotehanol production from Opuntia ficus. ISSY29, Guadalajara, Mexico. September.

Albertyn J, de Smidt O, Dukunde A, Henn, Steyn L, du Preez JC (2009) Molecular and physiological aspects of alcohol dehydrogenase in the yeast Saccharomyces cerevisiae. SASM 2009, Durban, South Africa.

du Preez JC, Steyn L, de Smidt O, Dukunde A, Albertyn J (2009) Phenotypic characteristics of multiple ADH deletion mutnats of Saccharomyces cerevisiae. ISSY27, Paris, France. October 2009.

Steyn L, de Smidt O, Ntlhokoa K, Albertyn J, du Preez JC (2008) The role of alcohol dehydrogenase 1 and 2 in Saccharomyces cerevisiae. SASM 2008.

Research

Yeasts, Fermentation, Ethanol Production, Industrial Biotechnology, Anaerobic Culture, Microbial Biotechnology, Bioprocess Engineering and Fermentation Technology, Microbiological Processes, Fermentation Biotechnology, Fermentation Technology, Microbial Fermentation, Industrial Microbiology, Bioprocess Engineering, Yeast Fermentation, Biotechnology Industry, Ethanol Fermentation, Biotechnological Engineering, Yeast Biotechnology, Microbial Physiology, Biotransformation, Fermentation 

Area(s) of Interest

Fermentation biotechnology with a special interest in growth kinetics in batch, fed-batch and continuous cultures; yeast physiology and the production of metabolites such as bioethanol.

Fundamental Microbiology with special application in Health Sciences.

Courses Presented

MCBG3614 Microbial Growth, Nutrition and Death (Practical) 2011-2015

MCBT6814 Microbial Techniques (Growth, Safety, Centrifugation and Data Modeling): 2013 - Current

MCBH2614 Introduction to Microbiology for Health and Consumer Science. 2017 - Current

MCBH2624 Pathogenic Microorganism for Health Science, 2016 - Current

 

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BLOEMFONTEIN CAMPUS FACULTY CONTACT

Elfrieda van den Berg (Marketing Manager)
T: +27 51 401 2531
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