Alternative Feed

    Solid State Fermentation

    Alltech Serdan – A Mexican Story of Sustainable Agriculture

    Visit Ciudad Serdan, Puebla, Mexico, and see how Alltech – an innovative agricultural company – has built a successful sustainable business around one of the region’s unique natural gifts: yucca. See first-hand the impact on the community.

    Solid State Fermentation (SSF) is one of nature’s key bioconversion processes.  With SSF, the carbon cycle is continuously completed by decomposing organic matter allowing microorganisms, like fungi, to grow on a solid substrate and break it down to release nutrients and energy.

    SSF is an ancient technology that for centuries has played an important role in the industrial preparation of various foods and beverages all over the world. The substrates used for SSF production are commonly agro-industrial residues such as wheat bran, dried distillers grains (DDG), soybean hulls and rice bran.

    Solid State FermentationSSF involves the careful selection of a specific strain of naturally occurring fungus that expresses the required enzyme profile and activities for a given substrate. The selected fungus is first propagated in liquid media to produce a large volume of inoculum which is then mixed with pre-sterilized selected solid substrate media to produce a mixture known as “Koji”. Under strict aseptic conditions, the Koji is evenly distributed on trays and introduced into environmentally controlled culture chambers. During this time the fungus grows rapidly and secretes enzymes to break down the substrate, thereby releasing the nutrients it requires for continued growth. These enzymes can then be used to aid in the digestion of animal feedstuffs to improve animal health, performance and profitability.

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