scholarly journals Optimization of novel multigrain pasta and evaluation of physicochemical properties: using D‐optimal mixture design

2021 ◽  
Author(s):  
Leila Kamali Rousta ◽  
Amir Pouya Ghandehari Yazdi ◽  
Sepideh Khorasani ◽  
Mohammad Tavakoli ◽  
Zahra Ahmadi ◽  
...  

2017 ◽  
Vol 39 (7) ◽  
pp. 934-942 ◽  
Author(s):  
Kok Whye Cheong ◽  
Hamed Mirhosseini ◽  
Bahareh Tabatabaee Amid ◽  
Nazimah Sheikh Abdul Hamid ◽  
Chin Ping Tan


Author(s):  
Nur Azzanizawaty Yahya ◽  
Roswanira Abdul Wahab ◽  
Nursyafreena Attan ◽  
Siti Ernieyanti Hashim ◽  
Mariani Abdul Hamid ◽  
...  


2019 ◽  
Vol 121 (12) ◽  
pp. 3208-3232 ◽  
Author(s):  
Hamed Hosseini ◽  
Shadi Bolourian ◽  
Fakhri Shahidi

Purpose Jujube fruit (JF) (Ziziphus jujuba Mill.) is used as pharmaceuticals food, flavors and food additives. The purpose of this paper is to study the suitability of JF incorporation into a commercial sponge cake formulation, and to produce a nutritious bakery product with appropriate organoleptic and technological characteristics. Design/methodology/approach The optimal level of JF was incorporated into sponge cake using a custom mixture design with three independent variables, namely, refined wheat flour (RWF, 15–28 percent), sugar (7–22 percent) and JF (0–28 percent), as well as several responses, including physical properties, texture profile analysis (TPA), sensorial evaluation and color features. Moreover, physicochemical properties (TPA and oxidative indices) of optimal cake (two of the best JF levels) were compared with control sample (without JF) during 51 days storage period, while two baking temperatures (180°C and 170°C) were used. Findings The optimal amounts of RWF (21.19 percent), sugar (21.20 percent) and JF (7.61 percent) required for making the sample with maximum springiness, cohesiveness, specific volume, sensorial scores and yellowness, as well as the lowest firmness, baking loss and browning were determined. Desirable effects of JF on the cake quality well maintained throughout the storage period, as TPA attributes, peroxide value, ultraviolet absorbance and acid value showed less changes in JF-incorporated cake than the control sample. Originality/value Incorporating JF (~7 percent) into the batter was successful to improve the physicochemical properties in both fresh and stored cake with chocolate-like color.



Author(s):  
Ng Pei Qi ◽  
Nor Hayati Ibrahim ◽  
Azlin Shafrina Hasim

Biopolymer interaction in oil-in-water (o/w) emulsions has been demonstrated to positively modify the emulsion physicochemical properties which lead to desirable stability. The present work focused on the effect of pea protein isolate (PPI), pectin, carboxymethyl cellulose (CMC) and their interaction on physicochemical properties and oxidative stability of o/w emulsions using a mixture design approach. The emulsions were prepared with 40 % sunflower oil stabilized with 1 % of PPI, pectin and CMC, respectively, as well as their mixtures according to a simplex-centroid design (10 points). The pH values for all emulsions were within acidic condition (3.22 to 4.66) and increased significantly (p<0.05) as the PPI-CMC level increased. Regression modelling revealed that ternary mixture of PPI-pectin-CMC had the strongest significant (p<0.05) synergism on 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging activity (85.06 to 91.17 %). Besides, interaction between PPI and CMC significantly (p<0.05) reduced the interfacial tension and at the same time thickened the interfacial membrane to provide the emulsion with desirable small droplet size (10.56 μm). This synergistic interaction effect also significantly (p<0.05) improved oxidative stability of the emulsion resulting in low total oxidation value (<7) due to decreased oxygen transportation rate across the thick interfacial membrane surrounding the emulsion droplets. Moreover, with high coefficients of determination (R2 > 96%) and insignificant lack of fit (p>0.05) of the fitted models, this study also proved that the mixture design with regression modelling was useful in elucidating PPI, CMC and pectin interactions and also able to empirically predict the responses to any blend of combination of the components.



RSC Advances ◽  
2016 ◽  
Vol 6 (71) ◽  
pp. 67378-67388 ◽  
Author(s):  
Intan Soraya Che Sulaiman ◽  
Mahiran Basri ◽  
Hamid Reza Fard Masoumi ◽  
Siti Efliza Ashari ◽  
Maznah Ismail

C. nutansis a well-known medicinal plant in South-East Asia that has attracted attention for its therapeutic characteristics. In this work, nanoemulsion has been chosen to be a carrier in encapsulation ofC. nutansextract for its potential in nanotechnology application.



RSC Advances ◽  
2016 ◽  
Vol 6 (22) ◽  
pp. 17845-17856 ◽  
Author(s):  
Shazwani Samson ◽  
Mahiran Basri ◽  
Hamid Reza Fard Masoumi ◽  
Roghayeh Abedi Karjiban ◽  
Emilia Abdul Malek

The particle size of Virgin coconut oil nanoemulsions was optimized using D-optimal mixture design and the optimum formulation was physicochemically characterized.



Author(s):  
A. Legrouri

The industrial importance of metal catalysts supported on reducible oxides has stimulated considerable interest during the last few years. This presentation reports on the study of the physicochemical properties of metallic rhodium supported on vanadium pentoxide (Rh/V2O5). Electron optical methods, in conjunction with other techniques, were used to characterise the catalyst before its use in the hydrogenolysis of butane; a reaction for which Rh metal is known to be among the most active catalysts.V2O5 powder was prepared by thermal decomposition of high purity ammonium metavanadate in air at 400 °C for 2 hours. Previous studies of the microstructure of this compound, by HREM, SEM and gas adsorption, showed it to be non— porous with a very low surface area of 6m2/g3. The metal loading of the catalyst used was lwt%Rh on V2Q5. It was prepared by wet impregnating the support with an aqueous solution of RhCI3.3H2O.



1966 ◽  
Vol 16 (03/04) ◽  
pp. 526-540 ◽  
Author(s):  
E. A Beck ◽  
D. P Jackson

SummaryThe effects of trypsin and plasmin on the functional and physicochemical properties of purified human fibrinogen were observed at various stages of proteolysis. Concentrations of plasmin and trypsin that produced fibrinogenolysis at comparable rates as measured in a pH stat produced, at similar rates, loss of precipitability of fibrinogen by heat and ammonium sulphate and alterations in electrophoretic mobility on starch gel. Trypsin produced a more rapid loss of clottability of fibrinogen and a more rapid appearance of inhibitors of the thrombin-fibrinogen clotting system than did plasmin. Consistent differences were noted between the effects of trypsin and plasmin on the immunoelectrophoretic properties of fibrinogen during the early stages of proteolysis.These results are consistent with the hypothesis that trypsin initially reacts with the same peptide bonds of fibrinogen that are split by thrombin, but these same bonds do not appear to be split initially by plasmin. Measurement of the various functional and physico-chemical changes produced by the action of trypsin and plasmin on fibrinogen can be used to recognize various stages of proteolysis.







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