Corn starch can be identified by its physico-chemical property of producing Maltese cross birefringence under polarized light. In the urine there are few other compounds that may cause a similar Maltese cross picture: cholesterol esters in nephrotic syndrome and 2,8 dihydroxyadenine (2,8DHA) crystals in rare patients with congenital adenine phosphoribosyltransferase deficiency. Both talc and st...

The effect of orientation on the properties of amylose and starch films was studied in order to determine if film strength, flexibility, and water resistance could be improved. Potato amylose and high (70%) amylose corn starch were peracetylated, cast into films, stretched in hot glycerol 1-6 times the original length, and deacetylated. Molecular orientation of potato amylose films was much hig...

Cereal Chem. 70(2):137-144 Wheat and corn starches were phosphorylated in a semidry state at P from phospholipids), and its pasting properties showed optimum 1300C with 5% (based on dry starch) sodium tripolyphosphate (STPP) thickening power with shear stability when cooked at 950C. The best and/or 2% sodium trimetaphosphate (STMP). All phosphorylation corn starch phosphate, judging from its pa...

The individual and effects of interaction of nature (X) and concentration (Y) of disintegrant and the relative density (Z) on the mechanical and release properties of chloroquine phosphate tablets were studied using a 2 factorial experimental design. Water yam starch (“low” level) and corn starch (“high” level) were used as disintegrants at concentrations of 5.0% and 20.0% w/w. The mechanical p...

Sixteen steers (650 Ib) were used to determine the effects of corn moisture, protein concentration and monensin (Rumensin) on ration digestibility and nitrogen retention. The steers were placed in metabolism stalls and fed rations of high moisture corn (HMC) or dry rolled corn at two protein levels (9.3 and 12.3 percent) with two monensin levels (0 and 30 g per ton of feed). Monensin addition d...

The texture of corn grains is a fundamental characteristic for the industry as well as for grain producers and processors. To further understand the mechanisms involved in grain hardness, contrasting corn cultivars for grain hardness and protein quality were evaluated. The cultivars were Cateto L237/67 (hard endosperm and low protein value), QPM BR 451 (semi-hard endosperm and high protein valu...

Intrinsic factors affecting the rate of starch digestion in foods are the physical form of food, shape and crystal structure of the starch granule, recrystallization and retrogradation, amylose-lipid complexes, native α-amylase inhibitors and non-starch polysaccharides [1]. For nutritional purposes, starch is classified into three types based on these intrinsic factors: rapidly digestible starc...

Starch graft poly(methyl acrylate) (S-g-PMA) was prepared by ceric ion initiation of methyl acrylate in an aqueous corn starch slurry (prime starch) which maximized the accessibility of the starch for graft polymerization. A new ceric ion reaction sequence was established as starch-initiator-methyl acrylate followed by addition of a small amount of ceric ion solution when the graft polymerizati...

A series of propionylated starches with different degrees of substitution (DS) was synthesised and their physicochemical properties and application as a stabiliser were investigated. Starch propionates with moderate DS were prepared by esterification of native corn starch with propionic anhydride. By varying the reaction times of the esterification process, twelve starch propionates with DS of ...