Corn meal

Cormngware Corn kernels Corn meal Cornmint Corn oil... 

Bacterium Bacilluspolymyxa Nutrient medium Corn meal... 

The two examples of sample preparation of solids containing low concentrations of the substances of interest will be the analysis of aflatoxins in corn meal (7) and the determination of the fungicide thiabendazole in citrus fruits. It should be pointed out that the applications chosen in this section attempt to reflect a range of analyses that the analyst is likely to meet in both research and industrial laboratories. 

This sample preparation involved, firstly, an extraction and the elimination of the solid matrix by filtration and, secondly, a concentration procedure employing a solid phase extraction cartridge. The compounds of interest were separated solely by dispersive interactions with the reversed phase. In the example given, the corn meal was spiked with the aflatoxins. 

Fifty grams of the corn meal was blended with 100 ml of an 80% methanol 20% water mixture for about a minute and the corn meal removed by filtration. The extraction cartridge was packed with a bonded phase carrying cyanopropylmethyl chains that would exhibit... 

Onwulata, C. 1. and Heymann, H. (1994). Sensory properties of extruded corn meal related to the spatial distribution of process conditions.. Sens. Stud. 9,101-112. 

Onwulata, C. I. (2009). Use of extrusion-texturized whey protein isolates in puffed corn meal. J. Food Proc. Pres. 34(2010), 571-586. 

Mix together 1 1/2 oz. each of ground, dried elder blossoms and peppermint leaves. Add to 2 oz. of ground oatmeal and 2 oz. corn meal. Use one oz. a week to gently scrub and remove dead layers of skin. It can also be mixed... 

Beef extract, peptone, corn meal, water Steinemema - - - Li(1984)... 

Field evaluation of bromethalin. Both indoor and outdoor field trials against Norway rat and house mouse populations were conducted under an EPA experimental use permit in a number of geographical locations in the U.S.( 15,16) In all cases 0.005% bromethalin was used in a bait containing 65% corn meal, 25% rolled oats, 5% sugar and 5% corn oil(E.P.A. diet). 

Prepared bi.scitil mixes made of flour, shortening, and salt usually contain 50-5057 lnnnncaleium phosphate I anhydrous) and 50-71)97 sodium aluminum phusphale or sodium acid pyrophosphate. Sell-rising flours and corn meals usually contain flour or com meal, salt, soda, and leavening acid. Usually used in these products are combinations of sodium aluminum phosphate and monncalciuin phosphate (anhydrous). 

Corning meal dust is used in the manuf of fireworks fuse powers. For certain purposes, some manufacturers find it is superior to other kinds of meal powders... 

Cosilit, A German coal-mining expl of the Car-bonite type (See Vol 2, p C61-R). It consists of NG 30, KN03 22.3, wood or corn-meal 40.5 ... 

Mycotoxin Wheat Wheat Corn meal Corn meal meal meal... 

M. Padmanabhan and M. Bhattacharya, Planar Extensional Viscosity of Corn Meal Dough, J. Food Eng., 18 389-414 (1993). 

K. Seethamraju and M. Bhattacharya, Effect of Ingredients on the Rheological Properties of Extruded Corn Meal, J. Rheol., 38(4) 1029-1044 (1994). 

In recent years, the conversion of starch to fructose has become a very important commercial process. High-fructose corn syrup (HFCS) is approximately twice as sweet as sucrose. It is used in soft drinks, canned fruits, lactic acid beverages, juice, bread, ice cream, frozen candies, and so on. HFCS can be obtained from a variety of cereals and vegetables, such as corn, wheat, rice, potatoes, and cassava. Corn is the most important source of HFCS because of low costs and excellent utilities of its by-products, corn meal, oil, gluten, germ, and fiber. 

Volatile compounds generated by model systems of zeln, corn amylopectin and corn oil extruded at barrel temepratures of 120°C and 165°C were analyzed by GC and GC/MS. The largest quantities of lipid oxidation products were detected in systems containing all three components. In each system, the quantity of 2,4-deca-dienal was low relative to the quantities of hexanal, heptanal and benzaldehyde. Identification of the Maillard reaction products, 2-methyl-3(or 6)-pentyl-pyrazine, 2-methyl-3(or 6)-hexylpyrazine and 2,5-di-methyl-3-pentylpyrazine, suggested that lipid-derived aldehydes might be involved in the formation of substituted pyrazines. 4-Methylthiazole was identified as a major decomposition product of thiamin when corn meal containing 0.5% thiamin was extruded at a final temperature of 180°C. 

Extruded Corn Meal with Thiamin Added. Degerminated yellow corn meal with 0.5% thiamin HC1 was extruded on a Werner Pfleiderer ZSK-30 co-rotating twin-screw extruder. The five heating zones of the barrel were held at 50°C, 76°C, 100°C, 134°C and 172°C, respectively. The product temperature was 180°C, the torque was 46% at 200 RPM and the pressure was 130-172 psi. The extrudate was allowed to cool to room temperature, then stored in glass vessels under nitrogen at 4°C. 

When 0.5% thiamin hydrochloride in degerminated yellow corn meal was extruded on a Werner Pfleiderer ZSK-30 co-rotating twin-screw extruder at the final product temperature of 180°C, numerous volatile components were generated. Table II lists the volatile compounds isolated and identified by purge-and-trap GC/MS method. 

Wheat flour, corn grits, corn meal and rice Level proposed (FDA) in 1981 4.41 mg/ 100 g (level proposed in 1974 was disallowed)... 

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