摘要:
Provided is a method for producing a yeast containing glutamic acid at a high concentration. In the method for culturing a yeast, a yeast in a stationary growth phase is subjected to liquid culture under the conditions that the pH of a liquid medium is 7.5 or higher and lower than 11. After the pH of the liquid medium for the yeast in a stationary growth phase is adjusted to 7.5 or higher and lower than 11, the yeast is further cultured, whereby a yeast with a high glutamic acid content can be produced. In the invention, as the yeast, Saccharomyces cerevisiae or Candida utilis can be used. Therefore, by using the yeast with a high glutamic acid content obtained by the above-said method and the extract obtained by extraction from the yeast, a seasoning composition and a food or drink with a high glutamic acid content can be provided.
摘要:
The present invention relates to a method for producing medium chain diol and, more particularly to recombinant microorganisms in which fatty alcohol dehydrogenase and/or fatty alcohol oxidase genes on a ω-oxidative metabolism pathway are deleted, the fatty aldehyde dehydrogenase genes are optionally deleted, and β-oxidative metabolism pathway-related genes are deleted, and to a method for producing medium chain diol from fatty acid-derived alcohol or alkane by culturing the recombinant microorganisms. The recombinant microorganisms of the present invention can produce a high yield of medium chain diol by preventing further oxidation and β-oxidative metabolism of fatty alcohols.
摘要:
Nutrient composition for saccharomyces cerevisiae and a method of using the same. The nutrient composition includes a yeast extract in 62-98 weight parts; an acid protease in 1.5-20 weight parts; and magnesium sulfate in 0.1-2.5 weight parts. The nutrient composition stimulates strong growth and reproduction of saccharomyces cerevisiae in various brewing materials, thereby speeding up alcoholic fermentation, shortening alcoholic fermentation period, and increasing liquor yield.
摘要:
The present invention relates to novel freeze-resistant baker's yeast ( Saccharomyces cerevisiae ) strains and uses thereof, for example for the preparation of fresh or frozen dough products, e.g., bread. It provides freeze-resistant baker's yeast strains, which are, e.g., obtainable from specific deposited strains, e.g., by breeding these strains with each other or with other Saccharomyces cerevisiae strains. The invention also relates to methods of using said strains or methods of preparing a dough or dough product or yeast product, as well as such products.
摘要:
Process for enhancing production rates/production of yeast cell wall products and yeast extracts by adding saponin or a saponin containing ingredient to yeast cultures during fermentation or to yeast cream prior to autolysis. In the context of a sugar beet processing facility, saponin, which is contained within the sugar refining process streams during sucrose production, is readily available and can be introduced to the yeast cultures or yeast cream as either a saponin extract or as dried and shredded sugar beet leaves, without requiring any additional sourcing or acquisition costs. Activity between the saponin and yeast/yeast cream results in the formation of saponin fermentation products.
摘要:
The present invention relates to Saccharomyces sp. capable of producing lactic acid with a decreased activity of pyruvate decarboxylase (PDC) and increased activities of aldehyde dehydrogenase (ALD) and acetyl-CoA synthetase (ACS), and a method of producing lactic acid from the culture medium obtained by culturing the microorganism.
摘要:
This disclosure describes processes for using biomass feedstock to produce a fermented product and co-products. The process includes washing the biomass feedstock, pretreating the washed feedstock, hydrolysis and fermentation of the pretreated feedstock(s) to produce cellulosic biofuel and co-products. The processes may also include yeast hydrolysis and aerobic propagation.
摘要:
The invention provides a Saccharomyces cerevisiae strain with unique multi-carbon-coutilizing characteristics and its application, relates to the field of microbiological technologies and fermentation engineering technology. S. cerevisiae CCTCC M 2014463 was screened from the Chinese Maotai-flavored liquor making environment. The strain can use glucose, galactose, xylose, alfa ketone, sucrose, maltose, honey disaccharide, loose sugar, trehalose, raffinose and it can use glucose and any of the sugars above simultaneously. In addition, the strain can endure high temperature, acid and alcohol, and is capable of producing a variety of flavor metabolites, including acids, alcohols and esters. The stain could be directly used in alcoholic beverage production, the enhancemment application of S. cerevisiae in alcoholic beverage production, and fuel ethanol production, and it can significantly improve the carbon source utilization and ethanol yield.