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Showing 3 results for Parseh
Volume 10, Issue 1 (5-2010)
Abstract
Power transition constant velocity joint is widely used in the automotive industry. Inner race is one of the power transition joint parts. Conventional method of production is time-consuming with high cost. The main objective in this paper is to investigate the material flow in precision forging of inner race and to optimize the process using a new tooling concept. In order to define and improve the process conditions, numerical simulation using MSC Super Forge software and physical modeling experiments were performed. To verify simulation results and to investigate material flow, plasticine was used for physical modeling. Results obtained from numerical simulation, are in very good agreement with experimental results
Volume 16, Issue 92 (october 2019)
Abstract
Nowadays, the consumers are extremely concerned about using chemical preservatives in foods and tend to use safe natural food products with healthful benefits. Pomegranate can have such a role. In this study, the antimicrobial properties of the extracts (peel, juice and nucleus) such as organic, aqueous and anthocyanin extracts extracted from different parts of pomegranate were examined and the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) on Staphylococcus aureus, Escherichia coli, Bacillus cerous and Salmonella tiphy were determined using liquid dilution susceptibility test. According to results, the most inhibitory effect was related to peel extractions. Minimum inhibitory concentration (MIC) was related to organic extractions and Anthocyanin of peels which were effective in concentration of 62.5 ppm on Staphylococcus aureus and Escherichia coli and had inhibitory effect on Bacillus cereus and Salmonella tiphy and also, organic & Anthocyanin extractions of peel had bactericidal effect in concentration of 125 ppm on Staphylococcus aureus and Escherichia coli and in concentration of 250 ppm on Bacillus cereus and Salmonella. After, peel extractions, the most antimicrobial was dependent on pomegranate juice extractions which aqueous, organic and Anthocyanin extractions in concentration of 250 ppm had inhibitory effect on Staphylococcus aureus and Escherichia coli bacteria and in concentration of 500 ppm had bactericidal effect on bacteria. Also, on Bacillus cereus and Salmonella tiphy bacteria in concentration of 500 ppm had inhibitory effect and in concentration of 1000 ppm had bactericidal effect, of course except aqueous extractions of pomegranate juice which showed inhibitory and bactericidal effects respectively in concentrations 250 and 500 ppm on Bacillus cereus bacterium. It can be mentioned that peel and pomegranate juice extractions have high antibacterial effects for high phenolic compounds and high antioxidant activity and it is concluded that phenolic compounds and antioxidant activity approximately have direct proportion with antimicrobial activity.
Volume 20, Issue 140 (October 2023)
Abstract
The present study aimed to investigate acorn flour (0-30%) and acorn syrup (0-100%) substitutions with wheat flour (cake flour) and sugar respectively on the properties of sponge cake based on combined design. The results showed that replacing acorn flour (AF) with wheat flour increased the dough density and baking loss% and decreased cohesiveness, lightness (L*), and redness (a*). Incorporating acorn syrup darkened the color of the crust. The Moisture content and specific volume were not affected by the replacement of flour and syrup of acorn. Addition of the acorn flour and acorn syrup enhanced water activity, firmness, chewiness, and diminished springiness. Sensory evaluation showed that with the replacement of acorn syrup, the overall acceptability of samples decreased, but acorn flour had no significant effect on it. According to the optimization results, it is suggested to substitute 11% acorn flour along with 25% or 45% acorn syrup to produce a high nutritional product with desirable textural and sensory characteristics.