Hop oxidation-reaction product, preparing method thereof and use thereof
The present invention relates to a hop extract having a reduced bitter taste which shows a fat absorption suppressing effect. More specifically the present invention relates to a hop extract oxidation-reaction product obtained by an oxidation-reaction of a hop extract.
1. A method of suppressing lipid absorption comprising: providing a powdery mixture comprising a hop extract and a base material,
oxidizing the powdery mixture to obtain the hop extract oxidation-reaction product, and
administering an effective amount of the hop extract oxidation-reaction product to a mammal including human,
wherein the hop extract oxidation-reaction product comprises at least one of the components or component groups (A), (B), (C), (D), (E), (F):
(A) α acid
(B) iso α acid
(C) β acid
(D) Oxi-Fr.1
(E) Oxi-Fr.2
(F) β1, β2, β3, β4
wherein each weight ratio of (A) to (F) is (D)/((A)+(B))>0.1 or more, or (F)/(C)>0.3 or more, or (E)/(C)>2 or more.
2. The method according to claim 1 , wherein the hop extract is obtained by extracting a starting material selected from the group consisting of hop, a hop cone, ground product thereof, and combination thereof with supercritical carbon dioxide or an organic solvent.
3. The method according to claim 1 , wherein the base material is selected from the group consisting of food and food additives.
4. The method according to claim 3 , wherein the base material is at least one selected from the group consisting of saccharides, polysaccharides, inorganic carriers and brewing raw materials.
5. The method according to claim 1 , wherein the base material is at least one selected from the group consisting of starch, dextrin, cyclodextrin, cellulose, diatomaceous earth, perlite, activated earth, activated carbon, silica gel, synthetic adsorption resin, a hop and hop lees.
6. The method according to claim 1 , wherein a weight ratio of the hop extract and the base material is 1:1 to 1:10.
7. The method according to claim 1 , the method further comprising: isolating the hop extract oxidation-reaction product from the oxidized powdery mixture.
8. The method according to claim 1 , wherein the hop extract comprises at least one component selected from α acid and iso α acid.
9. The method according to claim 1 , wherein the hop extract further comprises β acid.