Hanseniaspora

Hanseniaspora is a genus of yeast within the family Saccharomycetaceae. This genus is named after the Danish mycologist, Emil Christian Hansen, who made significant contributions to the field of yeast research. Hanseniaspora species are found in various environments, including fruit, wine, and beer fermentations. They are known for their role in the production of certain flavors and aromas in fermented beverages.

Characteristics

Hanseniaspora species are asexually reproducing yeasts. They are characterized by their apiculate (pointed) shape and their ability to ferment sugars. The cells are typically small, round, and occur in pairs or small groups. They reproduce by forming buds, a process known as budding.

Species

There are several species within the Hanseniaspora genus, including:

• Hanseniaspora vineae
• Hanseniaspora uvarum
• Hanseniaspora guilliermondii
• Hanseniaspora osmophila
• Hanseniaspora valbyensis

Each species has unique characteristics and roles in fermentation processes.

Role in Fermentation

Hanseniaspora yeasts play a significant role in the fermentation process of various beverages. They contribute to the production of certain flavors and aromas, particularly in wine and beer. For example, H. uvarum and H. vineae are known to enhance the fruity and floral notes in wine.

Research

Research on Hanseniaspora yeasts is ongoing, with scientists studying their genetics, metabolism, and role in fermentation. Understanding these yeasts can help improve the quality of fermented beverages and potentially lead to new applications in biotechnology.

See Also

• Saccharomyces
• Fermentation (biochemistry)
• Yeast in winemaking