The invention relates to a process for preparing a liquid oat base or drink from an oat derived material. The process comprises a first enzymation of the oat derived material, heating the oat derived material to terminate the enzymation thereof, and a second enzymation of the oat derived material. The first and/or the second enzymation comprises contacting the oat derived material with starch degrading enzyme, and the first and/or second enzymation further comprises contacting the oat derived material with protein solubilizing enzyme.

The invention also relates to a system for preparing a liquid oat base or drink from an oat derived material.

The purpose of the present invention is to provide a novel technology for modifying the properties of the heat-coagulated gel of egg white protein. In the present invention, a composition containing soy protein that has been subjected to protein deamidation is capable of improving the hardness, resiliency, and/or water-holding capacity of the heat-coagulated gel of egg white protein.

It is an object of the present invention to provide a microorganism with improved protein secretion, and to provide a method for producing a protein using the aforementioned microorganism. According to the present invention, there is provided a microorganism, in which the expression of at least one ABC transporter ATP-binding protein is lost or decreased.

The present invention provides a liquid enzyme preparation of an enzyme having excellent activity stability. Stability of enzymatic activity is improved by accommodating a liquid enzyme preparation that includes an enzyme into a container the internal space of which has been replaced by an inert gas, or by adding, to a liquid enzyme preparation containing a protein deamidase, an additive selected from the group consisting of sugar alcohols, glycerin, ethanol, sulfites, lecithins, citrates, polyphosphates, tartrates, phytic acid, metaphosphoric acid, sodium chloride, tocotrienols, methionine, pectins, beet pigment, capsicum pigment, rosemary extract, tocopherols, tea extract, and butylated hydroxyanisole.

The object of the present invention is to provide a processing method that makes it possible to improve various characteristics related to a fermented food or beverage that uses a protein ingredient (and, in particular, characteristics of the fermented food or beverage itself such as stress, water retention, suppression of water release, and the like or characteristics of the ingredients of the fermented food or beverage related to fermentation speed during production of the fermented food or beverage). The present invention improves various characteristics of a fermented food or beverage that uses a protein ingredient using the action of a protein deamidase and a multicopper oxidase during production of the fermented food or beverage.

The objective of the present invention is to provide a processing technique that enhances the solubility of a plant protein-containing liquid composition. By treating the plant protein-containing liquid composition with protein deamidase and transglutaminase, the solubility of the plant protein-containing liquid composition or the solubility of a plant protein-containing liquid composition, obtained by re-dispersing a dried product thereof, can be improved.