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Novel microalgal food compositions

a technology of food composition and microalgal, which is applied in the field of microalgal food composition, can solve the problems of inability to realize the promise of algae as a food substance, strong unpleasant taste, and deep green color, and achieve the effect of enhancing the structural properties of foods

Inactive Publication Date: 2016-11-10
CORBION BIOTECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides novel beverages and raw materials containing microalgae with varying components. The microalgal biomass used in the invention has nutrition-providing materials like carotenoids, dietary fiber, and tocopherols, as well as varying lipid compositions. Structural attributes of the microalgal biomass include improved mouth feel compared to alternative milk products like soy milk and rice milk. The invention also includes a new category of finished beverages based on microalgae and compositions for augmenting properties of current beverages through the inclusion of novel microalgae-based materials as ingredients. The high in protein and fiber food materials of the invention can be manufactured from edible and inedible heterotrophic fermentation feedstocks.

Problems solved by technology

While certain types of algae, primarily seaweed, do indeed provide important foodstuffs for human consumption, the promise of algae as a foodstuff has not been realized.
Algal powders made with algae grown photosynthetically in outdoor ponds or photobioreactors are commercially available but have a deep green color (from the chlorophyll) and a strong, unpleasant taste.
When formulated into food products or as nutritional supplements, these algal powders impart a visually unappealing green color to the food product or nutritional supplement and have an unpleasant fishy or seaweed flavor.
However, DHA is not suitable for cooked foods because it oxidizes with heat treatment.
Also, DHA is unstable when exposed to oxygen even at room temperature in the presence of antioxidants.
The oxidation of DHA results in a fishy taste and unpleasant aroma.

Method used

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Examples

Experimental program
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Effect test

example 1

Cultivation of Microalgae to Achieve High Oil Content

[0348]Microalgae strains were cultivated in shake flasks with a goal to achieve over 20% of oil by dry cell weight. The flask media used was as follows: K2HPO4: 4.2 g / L, NaH2PO4: 3.1 g / L, MgSO4.7H2O: 0.24 g / L, Citric Acid monohydrate: 0.25 g / L, CaCl2 2H2O: 0.025 g / L, yeast extract: 2 g / L, and 2% glucose. Cryopreserved cells were thawed at room temperature and 500 ul of cells were added to 4.5 ml of medium and grown for 7 days at 28° C. with agitation (200 rpm) in a 6-well plate. Dry cell weights were determined by centrifuging 1 ml of culture at 14,000 rpm for 5 min in a pre-weighed Eppendorf tube. The culture supernatant was discarded and the resulting cell pellet washed with 1 ml of deionized water. The culture was again centrifuged, the supernatant discarded, and the cell pellets placed at −80° C. until frozen. Samples were then lyophyllized for 24 hrs and dry cell weights calculated. For determination of total lipid in culture...

example 2

[0352]Three fermentation processes were performed with three different media formulations with the goal of generating algal biomass with high oil content. The first formulation (Media 1) was based on medium described in Wu et al. (1994 Science in China, vol. 37, No. 3, pp. 326-335) and consisted of per liter: KH2PO4, 0.7 g; K2HPO4, 0.3 g; MgSO4-7H2O, 0.3 g; FeSO4-7H2O, 3 mg; thiamine hydrochloride, 10 μg; glucose, 20 g; glycine, 0.1 g; H3BO3, 2.9 mg; MnCl2-4H2O, 1.8 mg; ZnSO4-7H2O, 220 μg; CuSO4-5H2O, 80 μg; and NaMoO4-2H2O, 22.9 mg. The second medium (Media 2) was derived from the flask media described in Example 1 and consisted of per liter: K2HPO4, 4.2 g; NaH2PO4, 3.1 g; MgSO4-7H2O, 0.24 g; citric acid monohydrate, 0.25 g; calcium chloride dehydrate, 25 mg; glucose, 20 g; yeast extract, 2 g. The third medium (Media 3) was a hybrid and consisted of per liter: K2HPO4, 4.2 g; NaH2PO4, 3.1 g; MgSO4-7H2O, 0.24 g; citric acid monohydrate, 0.25 g; calcium chloride dehydrate, 25 mg; gluc...

example 3

Preparation of Biomass for Food Products

[0355]Microalgal biomass is generated by culturing microalgae as described in any one of Examples 1-2. The microalgal biomass is harvested from the fermentor, flask, or other bioreactor.

[0356]GMP procedures are followed. Any person who, by medical examination or supervisory observation, is shown to have, or appears to have, an illness, open lesion, including boils, sores, or infected wounds, or any other abnormal source of microbial contamination by which there is a reasonable possibility of food, food-contact surfaces, or food packaging materials becoming contaminated, is to be excluded from any operations which may be expected to result in such contamination until the condition is corrected. Personnel are instructed to report such health conditions to their supervisors. All persons working in direct contact with the microalgal biomass, biomass-contact surfaces, and biomass-packaging materials conform to hygienic practices while on duty to th...

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PUM

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Abstract

The invention provides novel microalgal food compositions comprising microalgal biomass that have been processed into flakes, powders and flours. The microalgal biomass of the invention is low in saturated fats, high in monounsaturated triglyceride oil and can be a good source of fiber. The invention also comprises microalgal biomass that is suitable as a vegetarian protein source and also as a good source of fiber. Novel methods of formulating food compositions with the microalgal biomass of the invention are also disclosed herein including beverages, baked goods, egg products, reduced fat foods and gluten-free foods. The provision of food compositions incorporating the microalgal biomass of the invention to a human have the further benefit of providing healthful ingredients while achieving levels of satiety sufficient to reduce further caloric intake. The invention also provides novel strains of microalgae that have been subject to non-transgenic methods of mutation sufficient to reduce the coloration of the biomass produced by the strains. Oil from the microalgal biomass can be extracted and is an edible oil that is heart-healthy. The novel microalgal biomass and oil therefrom can be manufactured from edible and inedible heterotrophic fermentation feedstocks, including corn starch, sugar cane, glycerol, and depolymerized cellulose that are purpose-grown or byproducts of existing agricultural processes from an extremely broad diversity of geographic regions.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation application of U.S. patent application Ser. No. 13 / 263,724, filed Nov. 2, 2011, which is a U.S. National Phase application of International Patent Application No. PCT / US10 / 31088, filed Apr. 14, 2010. International Patent Application No. PCT / US10 / 31088 is a continuation-in-part of U.S. application Ser. Nos. 12 / 684,884, 12 / 684,885, 12 / 684,886, 12 / 684,887, 12 / 684,888, 12 / 684,889, 12 / 684,891, 12 / 684,892, 12 / 684,893, and 12 / 684,894, each of which was filed Jan. 8, 2010, and each of which is a continuation-in-part of U.S. application Ser. No. 12 / 579,091, filed Oct. 14, 2009, which claims the benefit under 35 U.S.C. 119(e) of U.S. Provisional Patent Application No. 61 / 246,070, filed Sep. 25, 2009, U.S. Provisional Patent Application No. 61 / 173,166, filed Apr. 27, 2009, U.S. Provisional Patent Application No. 61 / 157,187, filed Mar. 3, 2009, and U.S. Provisional Patent Application No. 61 / 105,121, filed Oct. 14, 2...

Claims

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Application Information

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IPC IPC(8): A21D2/16A23L13/40A23L33/185A23G1/56A23G1/44A21D2/26A23L33/12
CPCA21D2/165A21D2/267A23L13/426A23L33/12A23V2002/00A23G1/44A23L13/43A23L33/185A23G1/56A21D2/36A21D13/04A21D13/06A21D13/066A23L13/42A23L13/46A23L15/30A21D13/043A21D13/045A21D13/047A21D13/40A21D13/41A21D13/42A21D13/44
Inventor BROOKS, GEOFFREYFRANKLIN, SCOTTAVILA, JEFFDECKER, STEPHEN M.BALIU, ENRIQUERAKITSKY, WALTERPIECHOCKI, JOHNZDANIS, DANANORRIS, LESLIE M.
Owner CORBION BIOTECH INC
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