Acta Scientific Microbiology (ISSN: 2581-3226)

Short Communication Volume 4 Issue 5

Saccharomyces cerevisiae and Kluyveromyces marxianus: Possibilities and Role of the Most Popular Yeasts in Food Industry

Judit Molnár1 and Mahendra Pal2*

11 1/9 Palánkutca, 9200 Mosonmagyaróvár, Hungary
2Narayan Consultancy on Veterinary Public Health and Microbiology, Anand, Gujarat, India

*Corresponding Author: Mahendra Pal, Professor, Founder Director of Narayan Consultancy on Veterinary Public Health and Microbiology, Anand, Gujarat, India.

Received: March 15, 2021; Published: April 01, 2021


Fungi are versatile living microbe that has a wide range of uses. Fungi comprised of moulds and yeasts. The yeasts have been recognized to play a significant role in beverage industries. Among the yeasts, Saccharomyces cerevisiae and Kluyveromyces marxianus are the most important representatives. Their utilization is largely determined by their reproductive characteristics, which can also be proved by mathematical relationships, such as generation time and maximum specific rate of growth. They are preferred for use in the food, feed, cosmetics and many other areas. Their advantages are mainly due to their metabolic processes and cell growth, which can be used to produce many well-known products such as single cell protein. In some cases, they can also cause deterioration. It is hoped that Saccharomyces cerevisiae and Kluyveromyces marxianus may be the focus of research interest by demonstrating the importance of the yeast species.

Keywords: Fermentation; Industrial Processes; Kluyveromyces marxianus; Saccharomyces cerevisiae; Yeasts


  Fungi are eukaryotic, heterotrophic, non-photosynthetic, living organisms that are present in our environment [1]. Many fungi are known to benefit the mankind in a number of ways, such as production of antibiotics, drugs, recombinant vaccines, alcohol, and also land reclamation, bio-control [1]. Fungi occur in yeast and mould form [1]. In our paper, we focus primarily on the yeasts, which have excellent utilization and potential uses. This is manifested primarily in alcoholic fermentation processes, as most of them are facultative anaerobic organisms. These properties are also beneficial for the food, pharmaceutical, feed and cosmetics industries. Due to the metabolic processes of yeasts, in addition to fermentation processes, the production of single cell protein under aerobic conditions, the enrichment of certain cosmetic products and animal feeds can also take place.

  The most prominent and most widely used species of the yeasts are Saccharomyces cerevisiae and Kluyveromyces marxianus. These two species of the yeasts have become the focus of interest with their role in the industry. Numerous scientific studies proved that fermentation still has areas of a great interest. Since ancient times, it has been one of the fields in science that can always provided new results [2-5]. Our communication focuses on these species in order to present their most important properties and possibilities of their use in food industry, and to summarize the most important research results in connection with these two species of the yeast.

The most important properties and uses of Saccharomyces cerevisiae

  As mentioned earlier, the role of yeasts is significant in many areas. In biochemistry, genetics, cell biology, biotechnology, and many areas of industry, their most researched species is Saccharomyces cerevisiae [6-9]. The enzyme produced by S. cerevisiae is α-amylase. Due to its enzyme action, it can be used well on high-sugar media, such as molasses, sugar solution, and fruits. In addition, it is well utilized and can make excellent use of corn steep liquor solution. The vegetative propagation of S. cerevisiae occurs by sprouting, with cells oval [10-12]. Their industrial use is also outstanding due to their ability to utilize sugar, always by a fermentation process suitable for industrial purposes, under aerobic or anaerobic conditions.

Essential properties and uses of Kluyveromyces marxianus

  The role of Kluyveromyces marxianus is gaining increasing importance in industry and science [13,14] as well. The enzyme it produces by K. marxianus is β-galactosidase, which breaks down lactose into galactose and glucose. Therefore, the most useful media for the species are milk-based, but they are also well utilized on a glucose basis. It multiplies rapidly and has excellent sugar breaking ability. Its ethanol production is excellent. With these properties, it has come to the forefront of scientific experiments the most. Vegetative propagation of K. marxianus occurs by budding, spores are bean-shaped [15,16].

Metabolic and reproductive characteristics of yeasts

  The growth and product-producing ability of yeasts are the result of metabolic processes in cells. To do this, the yeast cell first absorbs nutrients, which it then uses or converts for growth. The path leading to the breakdown of nutrients is the catabolic process, catabolism. The process required to build a cell is anabolism, which takes place during the regulated functioning of cells. During these metabolic processes, metabolites or transformation products are formed. They are also of great importance for the food, feed industry, and biotechnology.

  The use of nutrients is also influenced by the genetic characteristics of the microbial species and environmental conditions. Of the environmental conditions, the presence or absence of oxygen is of paramount importance, as a process contrary to the desired purpose can be initiated with or without aeration (ethanol production or yeast growth). In addition, the adjustment of temperature and pH is also important in fermentation processes, as these parameters affect the life activities of yeasts. The parameters characterizing the growth of the yeasts used in the production of single cell protein can also be interpreted mathematically, so that the cells can be traced the most. Thus, in addition to microbiological measurements, the most important test methods are mathematical models and relationships, including generation time, maximum specific growth rate, and the Monod model. By continuously mapping these parameters, it is possible to refine the experimental processes and set the fermentation parameters, which can also increase the yield of the product.


  The manuscript presents the general characteristics of yeasts and then the most important characteristics of the yeast species S. cerevisiae and K. marxianus. It also focuses on their potential uses, as these species are used in a number of areas, from the food industry to animal feed, for a variety of purposes, such as single cell protein production, and alcoholic fermentation. Fermentation has been one of the most important biotechnology sectors since ancient times, and it holds surprises and new results for science to this day. By presenting the two yeast species and indicating the latest research findings, we would like to draw attention to their diversity and the latest research findings.


The authors are very thankful to Prof. Dr. R. K. Narayan for his suggestions during the preparation of manuscript and Anubha Priyabandhu for excellent computer help.

Author’s Contribution

All the authors contributed equally. They read the final version and approved it for the publication.

Conflict of Interest

The authors declare that they do not have conflict of interest.

Source of Financial Grant

There was no financial support for this manuscript.


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Citation: Judit Molnár and Mahendra Pal. “Saccharomyces cerevisiae and Kluyveromyces marxianus: Possibilities and Role of the Most Popular Yeasts in Food Industry”. Acta Scientific Microbiology 4.5 (2021): 07-09.


Acceptance rate33%
Acceptance to publication20-30 days

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