Effect of flour extraction ratio on the technological and rheological characteristics of the dough and the specifications of Arabic bread from modern flour milling

the aim of the research was to use different types of flour in terms of extraction rates (70-80-90%) and then study the specifications of these types of flour and the specifications of the dough and bread produced.

Effect of adding the sifting Avocado seed meals to wheat flour on produced dough and bread qualities

Adding the sifting meals of the Avocado seed to wheat flour mixtures caused increasing in folowing percentages of components: (moisture , fibers , ash , starch and total soluble sugars ) Also the (5,10%) percentages adding caused a slight reducing in gluten quality , while a reducing in gluten quality was clearly at (15 , 20%) percentages. Also the adding of tested meals caused improvement in baking quality (loaf weight during baking and during cooling) , also improvement the sensory properties of produced bread significantly , except (20%) percentage comparing with control sample. Finally , 15 and 20 percentages , only of Avocado seed meals adding caused reducing in taste property of produced bread.

Experimental and Analytical Study of absorbance phenomenon in unsaturated polyester – wood flour

In this study, we have investigated the water absorption behavior of unsaturated polyester /wood flour wastes composites materials. To achieve that, specimens were prepared by using compressing method with different ratio of polymer matrix with organic wastes produced from carpentry workshop (wood flour).Density of produced panels has been measured and the obtained results showed that there is an ability to produce hardindustrial wood panels. Practical experiments had been achieved to determine the percentages of water absorption. Absorption test was achieved on the cut specimens by immersing them in natural water (un-distilled) and measuring the gained weight of specimens and the resulted swelling to determine the final changes in the product. Through this study, we find that the absorbability has increased with the increment of organic filler ratio and the practices sizes increment. In addition, we also find that the absorption behavior follow Fickian law of diffusion in most specimens. We calculated the diffusion coefficient D and other parameters of diffusion process and we also plotted the associated plotsof the absorbability results. The obtained results showed that there is an ability to produce planes of industrial wood without any pretreatment of wood flour.

Effect of adding the sifting terebinth and grape seed meals to wheat flour on produced dough and bread qualities

Adding the sifting meals of the terebinth and grape seeds to wheat flour mixtures caused increasing in fibers content , and decreasing in ash content ,meanwhile the protein percentage remained steady , except the highest percentages (10 , 15 % ) . Also the (10,15%) percentages adding caused a slight reducing in gluten quality as showed by related tests : (fermentation time test , SDS test , moisture gluten test ) Also the adding of tested meals caused improvement in baking quality (loaf weight during baking and during cooling) , also improvement the sensory properties of produced bread significantly comparing with control sample. On the other hand , 10 and 15 percentages of grape seed meal adding caused reducing in sensory properties of produced bread. Finally , the determined results related with rheological properties tested by Mixolap apparatus showed improvement in thermal stability of starch enzymatic activity comparing with control sample , meanwhile the other tested properties didn't affected at the same level of addition .

Stability of Wheat Flour Properties during Production in Commercial Mill

The properties of produced flour of wheat are affected by two basic factors: the first is the used wheat properties, the second is the milling technology, and other factors are related to wheat preparation process milling process like the gap between the roller milling and still other random factors. The aim of this research to study the variation of technological properties (moisture content, protein, and ash), color, and rheological properties of produced flour in commercial mill during two month and using a one type wheat and in the same mill, which will show the effects of random factors of the mill process on the variation of produced flour properties at tow point the first at the end of production line and the second at packaging line. Stability of produced flour properties have been determined by using individual control charts. Rheological properties have been studied just for packaging line samples. The variation of technological properties of packaging line sample were greater than production line sample, and laying many sample points out of limiting lines shows that the milling process is out of control. Control charts of rheological properties shows that one sample point out of limiting line, but it still in the range of standard methods repeatability which is mean the process is under control according to packaging line sample rheological properties.

Study the effect of adding corn starch on some sensory and chemical properties for quick preparation vermicelli (noodles) manufacturer of bean flour

Cornstarch has been added, with percentages of ( 5%, 10%, 15%,20% and 25%), to flour beans both types paste (peeled and non-peeled) prepared for the manufacture of a quick vermicelli preparation (noodles), in order to study the effect of the addition of some chemical and organoleptic characteristics of this product and to determine the ideal proportion of corn starch added. The study has shown that there is an inverse relationship between the reduction of protein content and the increase of the fat percentage and the increase of starch proportion up to (25%) in both kinds of bean noodles: peeled and unpeeled. Increasing the ratio of starch above 15% has affected negatively the resulted noodles colour and some organoleptic characteristics such as taste and smell with the emergence of a gradual improvement of the appearance of noodles that resulted from flour peeled beans. Finally , it was found that the best ratio of added starch is 15%.

Distribution of variance for the effects of Syrian wheat class and flour type on the rheological properties of instant noodles production

The effects of Syrian wheat class and locally produced flour types on the rheological properties of instant noodles production were investigated. Two wheat classes (soft and durum) and two varieties of each were selected. These varieties were milled into standard flour (80% extraction rate) and high quality flour (72% extraction rate). Dough rheological properties were evaluated by farinograph and extensogarph techniques. Noodles cooking properties were measured according to the AACC approved methods. The rheological characteristics and the statistic analysis revealed significant differences among the selected varieties, and reflected directly and significantly on the cooking properties of the resultant noodles samples. This indicated the possibility of using farinograph and extensogarph techniques in predicting the quality of the resulting noodles. Furthermore, F test and distribution of variance analysis showed that wheat class was of a vital and significant effect on dough rheological properties and noodles quality comparing by wheat variety and flour type.

Effect of Location, Cultivar and Nitrogen Phosphorous Treatment on Durum Wheat Kernel, Flour and Balady Bread Quality

A landrace (Hourani-٢٧) and two newly introduced cultivars (ACSAD-٦٥ and Amra) were grown at five different locations (JUST, Shajarah, Hawarah, Kharja and Turrah) with or without NP treatment.