POWDER BEING RICH IN MILK-ORIGIN COMPLEX LIPIDS
Manufacture a powder with high milk-derived complex lipid content that contains milk-derived phospholipids and milk-derived ganglioside at high concentrations, which contains protein by 15 to 35 percent by dry weight and fat by 45 to 60 percent by dry weight, wherein the content of milk-derived complex lipids is 20 percent by dry weight or more, and which can be utilized as a material for functional food, mother's milk substitute or drug, by means of adjusting the pH value of a butter serum or butter serum powder reconstituted liquid to a range of 4.0 to 5.0, adding calcium chloride to promote coagulation of protein, removing the produced sediments, filtering the supernatant by means of ultrafiltration or microfiltration, and then drying the obtained concentrate.
1 . A powder with high milk-derived complex lipid content characterized by containing protein by 15 to 35 percent by dry weight and fat by 45 to 60 percent by dry weight, wherein the content of milk-derived complex lipids is 20 percent by dry weight or more; said powder being obtained by adjusting a pH value of a butter serum or a reconstituted liquid of butter serum powder to 4.0 to 5.0, adding calcium chloride and removing a produced sediments, filtering a supernatant by ultrafiltration or microfiltration, and then drying the obtained concentrate.
2 . The powder with high milk-derived complex lipid content according to claim 1 , characterized in that the milk-derived complex lipids comprise 20 percent by dry weight or more of phospholipids and 0.3 percent by dry weight or more of glycolipids.
3 . The powder with high milk-derived complex lipid content according to claim 1 , characterized in that calcium chloride is added by 0.01 to 0.05 percent by weight relative to the total quantity.
4 . The powder with high milk-derived complex lipid content according to claim 1 , characterized in that ultrafiltration is performed at a fractional molecular weight of 5 kDa or more.
5 . The powder with high milk-derived complex lipid content according to claim 1 , characterized in that microfiltration is performed at a fractional grain size of 0.1 to 1.4 μm.
6 . The powder with high milk-derived complex lipid content according to claim 1 , characterized in that said powder is used as a material for functional food, mother's milk substitute or drug.
7 . A method for producing a powder containing at least 20% by dry weight of milk-origin complex lipids, comprising:
providing a raw material constituted by a butter serum or a reconstituted liquid of butter serum powder;
adjusting a pH value of the raw material to 4.0 to 5.0 and adding calcium chloride to the raw material, thereby forming sediments of casein contained in the raw material;
obtaining a supernatant by separating the sediments of casein;
filtering the supernatant by ultrafiltration or microfiltration, thereby removing proteins other than casein, lactose, and minerals; and
drying the thus obtained filtrate to obtain a powder containing milk-origin complex lipids in an amount of 20% by weight or higher as a result of the foregoing steps.
8 . The method according to claim 7 , wherein the raw material consists of the butter serum or the reconstituted liquid of butter serum powder.
9 . The method according to claim 7 , wherein the calcium chloride is added in an amount of 0.01 to 0.05% by weight based on the raw material.
10 . The method according to claim 7 , wherein the supernatant is free of casein.
11 . The method according to claim 7 , wherein the resultant powder contains protein by 15 to 35 percent by dry weight and fat by 45 to 60 percent by dry weight.
12 . The method according to claim 7 , wherein the ultrafiltration is performed at a fractional molecular weight of 5 kDa or more.
13 . The method according to claim 7 , wherein the microfiltration is performed at a fractional grain size of 0.1 to 1.4 μm.