People

Our team has researchers from different backgrounds and expertises,who together form a multidisciplinary and highly capable research group.
Johanna Björkroth, Group Leader

I was first trained as veterinarian but developed quickly interest in science and food hygiene. My thesis was about contamination of foods with spoilers in industrial food manufacturing units and it paved the way to my current research interests. I have also been working with pathogenic microbes but my main expertise is associated with species and microbiomes that are causing food spoilage.

Per Johansson, University Researcher

I’m originally a microbiologist, but I have also worked with bioinformatics in early drug discovery in the pharmaceutical industry. Here I work with bioinformatics, molecular biology and I have a special interest in various phenotype assays related to food spoilage and design of selective media for all types of environmental bacteria. 

Elina Jääskeläinen, University Researcher

I am a Docent in Food Microbiology. My PhD research focused on Bacillus cereus toxins, and during my postdoctoral work, I have studied spoilage microbiota in food. Within our research group, I have specialized in chemical analytical methods. 

Julia Manninen, Doctoral Researcher

The focus of my thesis is on bioinformatics, specifically transcriptomics, which I use to investigate changes in food spoilage microbiomes. I did my bachelor's in Molecular Biosciences here at the University of Helsinki and my master’s in Biosystems Engineering at Aalto University. Besides transcriptomics I do a wide variety of bioinformatics for the group, such as assembly, annotation and phylogenic analyses.  

Tanu Hissaria, Doctoral Researcher

I am a PhD researcher specializing in the human perception of volatilomes produced by microbiomes during the spoilage of perishable foods. I hold a Master’s degree in Microbiology and Physicochemistry for Food and Wine Processes from L’Institut Agro Dijon, with a focus on soil microbiology and wine production, and a Bachelor's degree in Food Technology from Shoolini University.  I bring interdisciplinary expertise in food microbiology, sensory analysis, and fermentation science. Passionate about global collaboration and scientific discovery, I also enjoy exploring new cultures through travel. 

Trisha Punom, Doctoral Researcher

As a PhD student at the Food Spoilage Microbiomes Group, my research focuses on the microbial mechanisms of food spoilage. Holding a master's degree from the Università degli Studi di Padova (Italy), my current work investigates the roles of Latilactobacillus and Vagococcus spp. in the spoilage of food, particularly meat products. 

Elio Nushi, Doctoral Researcher

I am a PhD student at the University of Helsinki. I use statistics and machine learning to perform insightful analyses of biological data. My research focuses mainly on developing probabilistic methods for modeling time series of omics data. 

Henna Niinivirta, Senior Laboratory Technician
Group Alumni

We are grateful for the work of all our former group members, among others PhD researchers

Joanna Koort

Anna Murros

Elina Säde

And post-doctoral scientists Jenni Hultman and Timo Nieminen.