The present invention addresses the problem of providing an edible oil and fat that is usable for any kind of food, has an improved oxidation stability, and exhibits a good flavor. By stably dispersing a tea extract together with an acid in an oil and fat, the oxidation stability can be improved without increasing the formulation amount of the tea extract.

The present invention addresses the problem of providing an edible oil and fat that is usable for any kind of food, has an improved oxidation stability, and exhibits a good flavor. By stably dispersing a tea extract together with an acid in an oil and fat, the oxidation stability can be improved without increasing the formulation amount of the tea extract.

A diketopiperazine mixture suitable for mixing with a food or drink and a method for producing the mixture. High-temperature and high-pressure treatment of plant peptides in a liquid allows production of a plant extract containing a high concentration of diketopiperazines including cyclo-leucyl-leucine and cyclo-leucyl-phenylalanine. Diketopiperazines having excellent flavor derived from a plant natural product and can produce a food or drink provided with the functions of the diketopiperazines by directly mixing the diketopiperazines with the food or drink.

A diketopiperazine mixture suitable for mixing with a food or drink and a method for producing the mixture. High-temperature and high-pressure treatment of plant peptides in a liquid allows production of a plant extract containing a high concentration of diketopiperazines including cyclo-leucyl-leucine and cyclo-leucyl-phenylalanine. Diketopiperazines having excellent flavor derived from a plant natural product and can produce a food or drink provided with the functions of the diketopiperazines by directly mixing the diketopiperazines with the food or drink.

A tien-cha extract essence characterized by being obtained by subjecting a tien-cha extract to an activated carbon treatment, and a method for producing a fermented food product using the tien-cha extract essence provide a technique which can be replaced for a tien-cha essence obtained by subjecting a tien-cha extract to electrodialysis having various problems, has no effect on flavor while maintaining the effects of the tien-cha extract of increasing the growth ability of lactic acid bacteria and the viability or the like of bifidobacterium bacteria, has an unprecedented effect of increasing the growth ability of bifidobacterium bacteria, and facilitates production and powderization.

A tien-cha extract essence characterized by being obtained by subjecting a tien-cha extract to an activated carbon treatment, and a method for producing a fermented food product using the tien-cha extract essence provide a technique which can be replaced for a tien-cha essence obtained by subjecting a tien-cha extract to electrodialysis having various problems, has no effect on flavor while maintaining the effects of the tien-cha extract of increasing the growth ability of lactic acid bacteria and the viability or the like of bifidobacterium bacteria, has an unprecedented effect of increasing the growth ability of bifidobacterium bacteria, and facilitates production and powderization.

The present invention abstract describes the steps of a process for the preparation of black tea and the respective end product, wherein, in the initial step of the proposed process for producing black tea, the young yerba mate leaves (buds) are subjected to withering for a certain time. Next, the already withered leaves are rolled; next, the fermentation is carried out, and after such fermentation, drying and segregation are performed.

A method of improving mouthfeel and masking perceived astringency and undesired off-notes imparted by a consumable composition or additive, including the step of adding to the consumable or additive an astringency-masking amount of hyaluronic acid and/or salt thereof, wherein the hyaluronic acid and/or salt thereof has an average molecular weight of at least 500 kDa. Additionally disclosed is a food or beverage additive comprising at least one astringent component and an astringency-masking amount of hyaluronic acid and/or salt thereof. Further disclosed is a consumable composition comprising a consumable base, at least one astringent component and an astringency-masking amount of hyaluronic acid and/or salt thereof.

A composition for prevention, alleviation, or treatment of respiratory diseases, and a functional food and a pharmaceutical composition, each comprising same. There is also provided a composition for the enhancement of respiratory functions and the alleviation of respiratory diseases, comprising an Impatiens arguta extract as an active ingredient.

A composition for prevention, alleviation, or treatment of respiratory diseases, and a functional food and a pharmaceutical composition, each comprising same. There is also provided a composition for the enhancement of respiratory functions and the alleviation of respiratory diseases, comprising an Impatiens arguta extract as an active ingredient.