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Process for increasing throughput of corn for oil extraction

A technology for corn oil and high-oil corn, applied in chemical instruments and methods, separation/purification of carboxylic acid compounds, waste fuels, etc., can solve the problems of lack of various or all valuable components of endosperm fractions, etc.

Inactive Publication Date: 2007-05-30
CARGILL INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In all of the above methods, since the germ is separated from the rest of the kernel, the oil lacks many or all of the valuable components of the endosperm fraction

Method used

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  • Process for increasing throughput of corn for oil extraction
  • Process for increasing throughput of corn for oil extraction
  • Process for increasing throughput of corn for oil extraction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0133] U.S. Patent Nos. 6,313,328 and 6,388,110 describe a commercial-scale process for processing whole corn kernels having a total oil content of at least about 8% by weight, the method comprising flaking the corn kernels and removing the germinated corn kernels from the germinated corn kernels. Steps to extract corn oil. US Patent No. 6,610,867 describes a method of extracting corn oil to form corn flour. The process generally includes the steps of cracking whole kernel corn having a total oil content of from about 3% to about 30% by weight, and extracting corn oil from the cracked corn kernels (no flaking is used in this process). All components of the whole grain (whatever form) including those that are low in oil are subjected to an extraction step. In contrast, in the present method, fractionation produces a high oil fraction and a low oil fraction. The low oil fraction bypasses the extraction process and can go directly to feed or other uses. Only the high oil fract...

Embodiment 2

[0135] High oil corn grain 1 (LH310 (inbred, Holdens FoundationSeeds) x HOI001, see U.S. Patent Publication Nos. 2003 / 018269 and 2003 / 0172416, incorporated herein by reference) and high oil corn grain from storage Kernel 2 (Top Cross Blend seed corn purchased Spring 2003, grain harvested Fall 2003, Indiana) was metered into a steam jacketed agitating mixer with a residence time of approximately 7 minutes. The corn was heat tempered at 90°F. The conditioned corn is then transported to a Buhler-L facility (Buhler GmbH, Germany) where the hulls and softer tissues are rubbed to become a low oil fraction ("LOF") and separated from a high oil fraction ("HOF") . The results of the analysis of grain, HOF and LOF are shown in Table 4.

[0136] Table 4

[0137] moisture

[0138] These results show that oil levels were reduced to less than 2.5% by weight of LOF in more than half of the corn material, allowing this fraction to bypass costly extraction steps.

Embodiment 3

[0140] High oil corn grain 1 from Example 2 was conditioned as in Example 1 and then fed to a rice Roskamp Series 900 Breaker Mill drum (Roskamp, ​​Waterloo, IA). The drum has six teeth per inch in a round bottom V-shaped design. The upper roller gap is set to 2.5mm, and the lower roller gap is set to 2.5mm. The broken conditioned corn material is then suctioned to remove the bran. The crushed conditioned bran-free corn material was then transported to the Buhler-L apparatus described in Example 1 for grading. The analysis results of grain, bran, HOF and LOF are shown in Table 5.

[0141] table 5

[0142] moisture

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Abstract

Corn oil is extracted from corn to form a corn meal. Processing the corn grain to obtain the oil, meal, and other product streams generally includes dividing the corn kernel by fractionating to create a higher oil fraction and a lower oil fraction, forming a solvent extractable structure from the higher oil fraction, and extracting the oil from the higher oil fraction. The extracted corn oil is useful for making nutritionally enhanced edible oil or cooking oil, lubricants, biodiesel, fuel, cosmetics and oil-based or oil-containing chemical products. The extracted corn meal is useful for making enhanced animal feed rations, snack food, blended food products, cosmetics, and fermentation broth additive. The lower oil fraction is useful for one or more processes such as fermentation, wet-milling, animal feed production, sweetener production, and starch production, making enhanced animal feed rations, snack food, blended food products, and cosmetics.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application No. 60 / 564,202, filed April 21, 2004, and US Provisional Application No. 60 / 628,069, filed November 15, 2004, which are hereby incorporated by reference. Background of the invention [0003] The present invention relates to a method of increasing the yield of extracted corn oil. [0004] Corn, Zea mays, has been bred for many reasons including its use in food and industrial applications. Corn oil and corn flour are two of the many useful products derived from corn. Commercial traders process the plant using conventional methods of extracting corn oil from conventional corn, separating the corn seed into its component parts such as the endosperm, germ, tip cap and pericarp, Corn oil is then extracted from the corn germ fraction. Corn germ produced by wet or dry milling can be processed by pressing the germ to remove the oil, or by flaking the germ, pre-p...

Claims

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Application Information

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IPC IPC(8): C07C51/50C07C1/00A23L1/10A23L7/10
CPCY02E50/13Y02E50/30Y02E50/10
Inventor 迈克尔·范豪滕迈克尔·J·比弗阿伦·M·艾亚尔尤金·J·福克斯乔尔·英格瓦尔森尼尔·T·杰克尔道格拉斯·C·科托夫斯基保罗·J·麦克威廉斯亚历山大·帕蒂斯特迈克尔·J·图皮特洛伊·T·洛尔曼
Owner CARGILL INC
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