The present invention relates to use of a fermented soy extract as a prebiotic composition to protect beneficial bacteria in the gastrointestinal tract of an animal. The invention also concerns a high-pressure non-catalytic plant for the production of high-purity melamine implementing the above process and apparatuses suitable to be used in this plant. It is determined whether the scrubbing deadline will be met in accordance with one or more scrubbing criteria if device scrubbing operations are performed in a first mode. The elastomeric material facilitates volumetric displacement of the form-in-place fasteners in response to placing the fuel cell sub-assembly in compression. 1% of one or more of the impurities OLM-Me, OLM-Cl, and OLM-eliminate.