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  2. Fermentation - Wikipedia

    en.wikipedia.org/wiki/Fermentation

    Fermentation of feedstocks, including sugarcane, maize, and sugar beets, produces ethanol that is added to gasoline. [16] In some species of fish, including goldfish and carp, it provides energy when oxygen is scarce (along with lactic acid fermentation). [17] Before fermentation, a glucose molecule breaks down into two pyruvate molecules .

  3. Propionate fermentation - Wikipedia

    en.wikipedia.org/wiki/Propionate_fermentation

    This is done independent of oxygen and is thus anaerobic. Like in standard fermentation pathways, propionate fermentation involves the bacterium taking up saccharides, such as glucose, and breaking them down through glycolysis to produce pyruvate. Pyruvate is then converted into propionic acid through multiple reduction steps in the Wood ...

  4. Carbohydrate catabolism - Wikipedia

    en.wikipedia.org/wiki/Carbohydrate_catabolism

    In aerobic respiration, oxygen is required. Using oxygen increases ATP production from 4 ATP molecules to about 30 ATP molecules. In anaerobic respiration, oxygen is not required. When oxygen is absent, the generation of ATP continues through fermentation. There are two types of fermentation: alcohol fermentation and lactic acid fermentation.

  5. Fermentation in food processing - Wikipedia

    en.wikipedia.org/wiki/Fermentation_in_food...

    The French chemist Louis Pasteur founded zymology, when in 1856 he connected yeast to fermentation. [9] When studying the fermentation of sugar to alcohol by yeast, Pasteur concluded that the fermentation was catalyzed by a vital force, called "ferments", within the yeast cells. The "ferments" were thought to function only within living organisms.

  6. Primary nutritional groups - Wikipedia

    en.wikipedia.org/wiki/Primary_nutritional_groups

    The terms aerobic respiration, anaerobic respiration and fermentation (substrate-level phosphorylation) do not refer to primary nutritional groups, but simply reflect the different use of possible electron acceptors in particular organisms, such as O 2 in aerobic respiration, or nitrate (NO − 3), sulfate (SO 2−

  7. Microbial metabolism - Wikipedia

    en.wikipedia.org/wiki/Microbial_metabolism

    Microbial metabolism is the means by which a microbe obtains the energy and nutrients (e.g. carbon) it needs to live and reproduce.Microbes use many different types of metabolic strategies and species can often be differentiated from each other based on metabolic characteristics.

  8. Fermentation theory - Wikipedia

    en.wikipedia.org/wiki/Fermentation_theory

    Prior to Pasteur's research on fermentation, there existed some preliminary competing notions of it. One scientist who had a substantial degree of influence on the theory of fermentation was Justus von Liebig. Liebig believed that fermentation was largely a process of decomposition as a consequence of the exposure of yeast to air and water. [4]

  9. Water cycle - Wikipedia

    en.wikipedia.org/wiki/Water_cycle

    The ocean plays a key role in the water cycle as it is the source of 86% of global evaporation. [2] The water cycle involves the exchange of energy, which leads to temperature changes. When water evaporates, it takes up energy from its surroundings and cools the environment. When it condenses, it releases energy and warms the environment.

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