A process for producing a protein product from plants and yeasts comprises providing a thin stillage or a thin stillage concentrate; separating a protein concentrate from the thin stillage; diluting the protein concentrate to a dry substance content of at most 15 wt.%, tempering the diluted protein concentrate to at least 60° C., and adjusting the pH of the diluted and tempered protein concentrate to alkaline; cooling the processed protein concentrate and subsequently separating a liquid phase; adjusting the pH of the separated liquid phase to an acidic pH, and then separating a solid phase; and dispersing the solid phase in a solvent and subsequently separating a product phase, wherein the product phase comprises the protein product from plants and yeasts.

This disclosure describes methods to separate solids from liquids in a production facility. A process separates components in the process stream by using a mechanical device to separate the solids from the liquids based on a density difference. The process produces the liquids and solids, which may be further processed to create valuable animal feed products.

A process for obtaining soluble functional proteins from plant material includes the steps of: mechanically disrupting the cells of the plant material to obtain a mush stream; subjecting the mush stream to a coarse physical separation step, resulting in a permeate and a retentate; subjecting the permeate P.sub.b to mild treatment, resulting in a treated permeate; subjecting the treated permeate to serial centrifugation steps; subjecting centrate to a microfiltration step resulting in a permeate and a retentate; subjecting the permeate to an ultrafiltration step resulting in a permeate and a retentate; subjecting the retentate to hydrophobic column adsorption to provide a column permeate and a retentate; and drying the column permeate to provide a soluble functional protein isolate.

The present invention relates to a liquid food product comprising a liquid fraction of a brewer's spent grain and a method of preparing said liquid food product. In particular the liquid food product is prepared from brewer's spent grain where a vegetable or animal material has been added and the mixture subjected to an extraction step to provide an improved taste and mouthfeel.

1) A method for obtaining a concentrated protein-rich phase from residues of bioethanol production. 2.1) Previously, the separation of a protein-rich phase from whole stillage from bioethanol production has been achieved either by the addition of chemicals or by process steps that are complex in terms of equipment and/or energy. 2.2) Whole stillage from bioethanol production is fed to a solid-liquid separation, and the liquid phase (thin stillage) resulting from this is partially returned to the mashing process. This recirculation increases the raw protein content in the process. Part of the thin stillage is diluted and fed to a simple separation process without the addition of chemicals and temperature treatment, with a protein-rich phase being obtained. 2.3) A protein-rich phase is obtained from residues of bioethanol production.

Methods and systems are provided for the extraction of protein rich flour and fiber rich flour from brewer's spent grains (BSG). The extraction of protein from the BSG may include preparing the BSG by controlling the temperature in a hot grain storage system and in some cases dewatering the BSG to acceptable moisture content levels. In extracting the protein rich and fiber rich flour, the BSG is conveyed to a device that dries, mills, and fractionates the BSG into separated protein and fiber extract.

The present disclosure provides processes for the production of protein and fibre compositions from brewer's spent grain. The process comprises micronising dried brewer's spent grain using a pin mill and fractionating the micronised brewer's spent grain using an air classifier. The present disclosure also provides protein and fibre compositions, processes for producing food products incorporating the protein or fibre compositions, and food products comprising the protein or fibre compositions.

This disclosure describes methods to separate solids from liquids in a production facility. A process separates components in the process stream by applying non-condensable media to create density differences and then using a mechanical device to separate the solids from the liquids based on the density difference. The process produces the liquids and solids, which may be further processed to create valuable animal feed products.

Described herein is a concentrated sweet potato leaf protein in dried form, along with methods for producing it. The concentrated leaf protein has a protein content of greater than 21% by weight, and can have other beneficial components such as polyphenols. The concentrated leaf proteins are suitable for use in food and beverages, as protein supplementation, or as agents for gelling, foaming, and whipping.

A food product ingredient formed from a keratinous protein-containing material, e.g, feathers, and methods of making the same. The methods include cleaning the keratinous protein-containing material, combining the keratinous protein-containing material with a cereal bran to form a mixture, and hydrolyzing the mixture to form the food product ingredient. Optionally, of the keratinous protein-containing material is cleaned and/or frozen within 5 hours of collection. The methods generate fewer unpleasant odors, and food product ingredients produced by the method can similarly benefit. The food product ingredient may be incorporated into a food product, such as a pet food product.