All species described in this section are the most prevalent contaminants of beer from the start of fermentation through to the packaged product. 7: Sporing: Mold is a sporing fungi : Yeast is a not a sporing species of fungi. No doubt you think of the type of yeast used in baking breads. 8: Reproduction: Sexually and asexually reproduce into multi-cellular form. Bacteria thrive at a pH around neutrality (6.5- 8.0). Further, yeast belongs to the kingdom Fungi while bacteria belong to the kingdom Monera. When the selected antibiotic is added to the agar, only bacterial cells containing the gene insert conferring resistance will be able to grow. Yeast colonies generally look similar to bacterial colonies. Fermenting yeast produces the alcohol in beer and wine. Some species, such as Candida, can grow as white patches with a glossy surface. Bacterial growth, like yeast, is affected by moisture, ph, temperature, food supply, salt, sugar, oxygen supply and light. Yeast and fungi can cause infections in your body and on your skin. The stringent conditions of beer fermentation have selected for unique groups of yeast and bacteria specialized for growth in beer—and usually not much else. Soy sauce is produced by fermenting Aspergillus ortzae, a fungus, growing on soy beans. They reproduce mostly asexually (budding). Fermentation is used to make many ethnic foods such as sauerkraut and miso. Fermentation occurs in certain types of bacteria and fungi that require an oxygen-free environment to live (known as obligate anaerobes), in facultative anaerobes such as yeast, and also in muscle cells when oxygen is in short supply (as in strenuous exercise). Most bacteria grow well in moist environments with temperatures ranging between 25-40C. Types: There are 400,000 types of molds. This can also be used when creating engineered strains of bacteria that contain an antibiotic-resistance gene. Many people associate yeast infections with the vagina, and that is one type of yeast infection. The main difference between yeast and bacteria is that yeast is a eukaryote whereas bacteria are prokaryotes. And yeast has membrane-bound organelles, but bacteria has no membrane-bound organelles. Yeast, a type of fungi (plural for fungus), is found in many places from nature, to research labs and even everyday kitchens for baking. Gram-positive bacteria. Moreover, some of the other differences between yeast and bacteria cells are that chitin is … There are 1500 types of yeasts. 9: Asexual Spores: Sporangiospores and Conidia: Blastospore: 10: Sexual Spores: Zygospores, Ascospores, and … However, some like it colder (just over freezing) and some like it hot (60-80C). These organisms are part of the fungal kingdom, which includes mushrooms and molds, and they are separate from bacteria, viruses, amoeba, and plants. However, through the selection of strains and development of propagation techniques, more specific applications of yeast are now being found in many different industries, including brewing, malting, farming (animal feeds), pharmaceuticals and dietetics. In fact, the smell of fresh baked bread and rising dough can be attributed to alcohol produced from yeast. Most chemicals will kill bacteria. Some types of bacteria can only grow in the presence of certain additives.