NOVELTY - Processing and recovering organic matter from biofluid, biosemisolid/biosolid (biomass) having protein and lipid, involves providing first liquid and/or semisolid or paste having organic matter (biomass) in liquid, semisolid/paste, colloidal and/or solid/particulate form; adding second liquid having base to raise the pH of the both liquid mixtures and raising the temperature to a point at/above the melting point of the lipid; mixing, and shearing/sonicating the above liquid, and at the same time adding acid; and separating/removing the liquid from the precipitate or flocculate.    USE - For processing and recovering organic matter from a biofluid, biosemisolid or biosolid (biomass) and from a dairy-based, soy based and fruit based liquid; and for encapsulating oils with proteins for e.g. making foods, food supplements or additives and feeds or feed supplements or additives, and/or biofuels (claimed).    ADVANTAGE - The method is effective recycling process to destroy infectious agents, e.g. prions, while at the same time recovers valuable animal proteins for e.g. animal feeds.    DETAILED DESCRIPTION - Processing and recovering (M1) organic matter from a biofluid, biosemisolid or biosolid (biomass) comprising a protein and a lipid, involves (a) providing a first liquid and/or semisolid or paste containing an organic matter (a biomass) in a liquid, a semisolid or paste, a colloidal and/or a solid or a particulate form; (b) adding to the first liquid and/or semisolid or paste of step (a) a second liquid containing a base to raise the pH (make the liquid and/or semisolid or paste more alkaline) of the first and second liquid mixture to: (i) pH 8-13, or 11-12, or at least 8, 9, 10, 11, 12 or 13, (ii) a point at which the protein flocculates or coagulates, or the protein and lipid form an emulsion, or (iii) a point at which the protein and lipid form a lipid-encapsulated structure (a liposome or vesicle containing the lipid encapsulating the protein) or a protein-encapsulated structure (a liposome or vesicle containing the protein encapsulating the lipid), and raising the temperature of the first liquid and/or semisolid or paste to a point at or above the melting point of the lipid, where the temperature is raised either before, during and/or after adding the second liquid to the first liquid; (c) mixing, and shearing or sonicating the liquid of step (b), and at the same time or any time during the process of the mixing, or shearing or sonicating, adding a liquid comprising an acid to: (i) lower the pH (make the liquid more acid) to pH 3-6, or less than or equal to 3, by generating a precipitate or flocculant containing most of the protein, lipid or lipid-encapsulated structures or protein-encapsulated structures out of the liquid, or (ii) lower the pH (make the liquid more acid) to the point where most of the protein, lipid, or lipid-encapsulated structures or protein-encapsulated structures precipitate or flocculate out of the liquid; and (d) separating or removing some, all or most of the liquid from the precipitate or flocculate, or separating or removing some, all or most of the precipitate or flocculate from the liquid. INDEPENDENT CLAIMS are included for the following:    (1) producing (M2) biofuel involving providing an organic matter or a biomass and treating the organic matter or biomass using a process comprising a method (M1);    (2) producing (M3) food or feed, or food or feed additive or supplement, nutritional or dietary supplement, involving providing organic matter or biomass and treating the organic matter or biomass using the method (M1);    (3) a food or feed, or food or feed additive or supplement, or nutritional or dietary supplement (A1), comprising an organic matter (a biomass) made or processed by method (M1);    (4) inactivating (M4) protein-comprising infectious agent in a fish-derived or an animal-derived composition containing processing the fish-derived or animal-derived composition using the method (M1), where at least one step of the process involves raising the pH to at least 10.2; raising the pH at 10.2-11.5; or the method of both steps, and at least one step of the process involves raising the temperature at 140-180 degrees C.