Método para produzir uma levedura rica em aminoácido, levedura rica em aminoácido, extrato de levedura rica em aminoácido, composição de condimento, e, alimento ou bebida contendo aminoácido

An object of the present invention is to provide a method for producing an amino acid-rich yeast which contains free amino acid in a high concentration. The present invention provides a method for producing an amino acid-rich yeast, which includes liquid-culturing a yeast in a stationary phase of proliferation under the condition that the pH of a liquid medium is equal to or higher than 7.5 and lower than 11; a method for producing an amino acid-rich yeast, which includes adjusting the pH of a liquid medium of the yeast in a stationary phase of proliferation to equal to or higher than 7.5 and lower than 11, and further culturing the yeast in the above pH range; a method for producing an amino acid-rich yeast, wherein the yeast is Saccharomyces cerevisiae or Candida utilis; an amino acid-rich yeast obtained by any one of the above methods for producing an amino acid-rich yeast; the amino acid-rich yeast extract wherein the amount of a free amino acid is from 7.5 to 18.0% by weight per dry yeast cell; and an amino acid-rich yeast extract extracted from the above amino acid-rich yeast.