Calpis Co., Ltd.

Naoto Uchida

Kazuhito Ohsawa

Kohji Ohki

Hiroaki Goto

Hidehiko Baba

Michio Hatori

The invention provides a method for preparing a peptide for improving brain function, comprising hydrolyzing milk casein with an enzymatic catalyst comprising a protease to produce a hydrolysate comprising: (i) a peptide consisting of the amino acid sequence shown in SEQ ID NO: 1 or a variant thereof; (ii) a peptide consisting of the amino acid sequence shown in SEQ ID NO: 2 or a variant thereof; or (iii) a mixture of the peptides of (i) and (ii), wherein the production yield of each of the peptides is 2% or more, or the total production yield of the mixture is 10% or more. The invention also provides a food or drink or a pharmaceutical composition containing the hydrolysate.

Method for enzymatically preparing peptides for use in improvement of brain function

The present invention provides a peptide and a composition which are suitable for oral ingestion, and which have a skin aging-inhibiting activity, a collagen-production promoting activity, an epidermal turnover promoting activity, and a cutaneous cell-proliferating effect. The present invention also provides a medicament and a functional food which have a skin aging-inhibiting activity, a collagen-production promoting activity, and a cutaneous cell-proliferation promoting activity. The present invention provides a composition including at least one peptide of Asn-lle-Pro-Pro-Leu, lle-Pro-Pro-Leu, lle-Pro-Pro, Pro-Val-Val-Val-Pro-Pro, Val-Pro-Pro-Phe, Val-Pro-Pro, Phe-Pro-Pro-Gln, and Leu-Pro-Pro-Thr.

Skin aging-inhibiting peptide

The present invention provides a composition which may be ingested orally in a small dose for the purpose of improving brain function, and a method for improving brain function. The present invention is a composition for improving brain function, comprising, as an active ingredient, X-Pro-Pro-Y or a salt thereof, wherein X represent Val, Ile or Asn-Ile and Y represent Phe or Leu.

Composition for improving brain function and method for improving brain function

The present invention provides a composition which may be ingested orally in a small dose for the purpose of improving brain function, and a method for improving brain function. The present invention is a composition for improving brain function, comprising, as an active ingredient, Phe-Pro.

Provided are a composition for improving the brain function, which can be orally taken at a low dose, and a method therefor. The composition for improving the brain function contains, as the active ingredient, X-Pro-Pro-Leu-Thr-Gln-Thr-Pro-Val-Val-Val-Pro-Pro-Phe-Leu-Gln-Pro-Glu-Y (wherein X is nil or represents Ile or Asn-Ile; and Y is nil or represents Val-Met), X-Val-Val-Val-Pro-Pro-Phe-Leu-Gln-Pro-Glu-Y (wherein X is abscent or represents Thr-Gln-Thr-Pro, Pro-Leu-Thr-Gln-Thr-Pro, Leu-Thr-Gln-Thr-Pro or Pro; and Y is abscent or represents Val-Met), or a salt of the same. The method for improving the brain function comprises administering said peptide or a salt of the same.

The present invention provides a composition which may be ingested orally in a small dose for the purpose of improving brain function, and a method for improving brain function. The present invention is a composition for improving brain function, comprising, as an active ingredient, X-Val-Arg-Gly-Pro-Phe-Pro-Ile-Ile-Val (SEQ ID NO: 5), wherein X is absent or represents Pro.

The present invention provides a composition which may be ingested orally in a small dose for the purpose of improving brain function, and a method for improving brain function. The present invention is a composition for improving brain function, the composition comprising, as an active ingredient, Xaa-Pro-Pro (wherein Xaa represents Ile, Leu or Ser).

The present invention provides a composition which may be ingested orally in a small dose for the purpose of improving brain function, and a method for improving brain function. The present invention is a composition for improving brain function, the composition comprising, as an active ingredient, X-Met-His-Gln-Pro-His-Gln-Pro-Leu-Pro-Pro-Thr-Val-Met-Phe-Pro-Pro-Gln-Ser-Val-Leu (SEQ ID NO: 6) or a salt thereof, wherein X is absent or represents Ser-Trp or Leu-Gln-Ser-Trp (SEQ ID NO: 7).

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Sagamihara, Japan

Naoto Uchida