Extracts and beverages containing 2,5-piperazinedione, 3,6-bis(phenylmethyl)-, (3S,6S)-
Extracts or beverages whose ratio between the content of 2,5-piperazinedione,3,6-bis(phenylmethyl)-,(3S,6S)-(unit: μg/100 g) and Brix (Bx) is 6 (μg/100 g)/Bx or more are good in flavor and feeling on the tongue and further have a good appearance.
1. A chicken meat extract containing 2,5-piperazinedione,3,6-bis(phenylmethyl)-,(3S,6S)- and having a pH of 5 or more, wherein the ratio between the soluble content of 2,5-piperazinedione,3,6-bis(phenylmethyl)-,(3S,6S)- (μg/100 g) and Brix (Bx) is 12 to 208.4 (μg/100 g)/Bx.
2. The extract according to claim 1 , which contains 2,5 piperazinedione,3,6- bis(phenylmethyl)-,(3S,6S)- at a concentration of 60 μg/100 g or more.
3. A capsule or tablet encapsulating the extract according to claim 1 .
4. A beverage containing a chicken meat extract, containing 2,5-piperazinedione,3,6-bis(phenylmethyl)-,(3S,6S)- and having a pH of 5 to 10, wherein the ratio between the soluble content of 2,5-piperazinedione,3,6-bis(phenylmethyl)-,(3S,6S)-(μg/100 g) and Brix (Bx) is 12 to 208.4 (μg/100 g)/Bx.
5. The beverage according to claim 4 , which contains 2,5-piperazinedione,3,6-bis(phenylmethyl)-,(3S,6S)- in an amount of 60 μg/100 g or more.
6. A packaged beverage, wherein the beverage according to claim 4 is packed in a container.
7. A process for producing the extract according to claim 1 , which comprises:
(1) a pretreatment in which meat of chicken is used as a starting material and heated in a liquid to remove water-soluble proteins contained therein,
(2) a heating in which the liquid is replaced after the pretreatment and heating is repeated again, and
(3) a filtration in which the obtained liquid sample is filtered, thereby obtaining the chicken meat extract of claim 1 .
8. A process for producing the extract according to claim 1 , which comprises:
(1) a pretreatment in which meat of chicken is used as a starting material and heated in a liquid to remove water-soluble proteins contained therein,
(2) a heating in which the liquid is replaced after the pretreatment and heating is repeated again,
(3) a filtration in which the obtained liquid sample is filtered, and
(4) a concentration,
thereby obtaining the chicken meat extract of claim 1 .
9. A process for producing the beverage according to claim 5 , which comprises:
(1) a pretreatment in which meat of chicken is used as a starting material and heated in a liquid to remove water-soluble proteins contained therein,
(2) a heating in which the liquid is replaced after the pretreatment and heating is repeated again, and
(3) a filtration in which the obtained liquid sample is filtered,
thereby obtaining the beverage containing a chicken meat extract of claim 5 .
10. A process for producing the beverage according to claim 4 , which comprises:
(1) a pretreatment in which meat of chicken is used as a starting material and heated in a liquid to remove water-soluble proteins contained therein,
(2) a heating in which the liquid is replaced after the pretreatment and heating is repeated again, and
(3) a filtration in which the obtained liquid sample is filtered, and
(4) a concentration,
thereby obtaining the beverage containing a chicken meat extract of claim 4 .