Nutritional products having improved lipophilic solubility and bioavailability in an easily mixable form
Methods of preparing a nutritional product which contain a lipophilic nutrient are disclosed. The nutritional product is made using a fortifying powder containing the lipophilic nutrient, a monoglyceride and diglyceride (“MDG”) oil, a phospholipid, and a carrier. The fortifying powder enhances the digestive absorption of the lipophilic nutrient when the nutritional product is consumed. The fortifying powder simplifies the process of manufacturing the nutritional product, as the fortifying powder can be added at a suitable stage of the process with other powdered ingredients. The fortifying powder may be manufactured in bulk and stored for later use, thereby improving manufacturing efficiencies. The fortifying powder and methods of preparing the fortifying powder are also presented.
1. A method of preparing a fortifying powder containing a lipophilic nutrient, the method comprising:
a. mixing a lipophilic nutrient, a monoglyceride and diglyceride (MDG) oil, and a phospholipid in the presence of heat to form a first mixture;
b. mixing an aqueous solution comprising a carrier with the first mixture to form a second mixture; and
c. drying the second mixture to form the fortifying powder
wherein:
the MDG oil is present at a concentration of 6 wt % to about 50 wt % of the fortifying powder; and
the phospholipid is present at a concentration of about 1 wt % to about 12 wt % of the fortifying powder.
2. The method of claim 1 wherein the lipophilic nutrient is selected from the group consisting of lutein, zeaxanthin, astaxanthin, beta-carotene, lycopene, Vitamin A, Vitamin D, Vitamin E, Vitamin K, Coenzyme Q10, linoleic acid, alpha linolenic acid, arachidonic acid, docosahexaenoic acid, eicosapentaenoic acid, and combinations thereof.
3. The method of claim 1 wherein the phospholipid is selected from the group consisting of lecithin, choline, phosphatidylcholine, phosphatidylethanolamine, phosphatidylinositol, phosphatidic acid, phosphatidyl serine, lysophosphatides, and combinations thereof.
4. The method of claim 1 wherein the lipophilic nutrient and MDG oil are mixed before adding the phospholipid.
5. The method of claim 1 wherein the phospholipid and MDG oil are mixed before adding the lipophilic nutrient.
6. The method of claim 1 wherein the step of drying the second mixture includes freeze drying, spray drying, tray dryers, tunnel dryers, roller dryers, drum dryers, fluidized bed dryers, pneumatic dryers, rotary dryers, trough dryers, bin dryers, belt dryers, vacuum dryers, or combinations thereof.
7. The method of claim 1 , further comprising mixing the fortifying powder with a base nutritional composition to form a nutritional product, wherein the base nutritional composition comprises protein at a concentration of about 1 wt % to about 85 wt % and fat at a concentration of about 0.6 wt % to about 50 wt %.
8. The method of claim 7 wherein the base nutritional composition further comprises carbohydrate at a concentration of about 7 wt % to about 60 wt %.
9. The method of claim 7 wherein the fortifying powder is present at a concentration of about 0.1 wt % to about 16 wt % of the nutritional product.
10. The method of claim 1 , wherein the first mixture is heated to a temperature of at least 85° F. during the mixing step.
11. The method of claim 1 , wherein the first mixture is heated to a temperature of at least 120° F. during the mixing step.
12. The method of claim 1 , wherein the aqueous solution comprises water and the carrier, and wherein the carrier comprises one or more proteins.
13. The method of claim 12 wherein the carrier further comprises one or more ingredients is selected from the group consisting of simple sugars, complex sugars, starches, cellulosics, sugar alcohols, proteins, and combinations thereof.