Textural, mechanical, microstructural, and thermal properties of reconstituted pimiento alginate‐guar gels subjected to thermal and mechanical stresses during pasteurization process were investigated. Alginate‐guar gelling system at ratio 2:1 at different calcium chloride concentrations (2–8%) and varying acid conditions including citric and lactic acid 1% were evaluated. Textural profile analysis parameters viz. hardness, springiness, gumminess, cohesiveness, adhesiveness as well as mechanical properties, structural, thermal, and morphological characteristics of pimiento strips were examined. Gel strength and elasticity of pimiento strips were increased at higher calcium levels. Fracturability was decreased clearly revealed the gel system, regain its strength in spite of high pulp content (25%) and can maintain its own structure. Increase in hardness and reduction in springiness showed loss of elasticity, which may be attributed to the gel shrinkage during thermal processing, making it more compact and dense. Therefore, the restructured pimiento strips were completely thermo stable at pasteurization temperature. By increasing alginate and calcium level in the pimiento strip, glass transition temperature was reduced from 112 to 98°C. Fourier transform infrared spectroscopy studies confirmed that the gel network structure at acidic conditions was stable and acid type did not has significant effect on the chemical interactions. The microstructural results showed ellipsoidal and compact structure in which can be an evidence of high elasticity and rigidity of pimiento gels. These results completely approved the high elasticity and rigidity of the pimiento strips and their ability to sustain successfully thermal and mechanical stresses with appreciable textural integrity during processing such as pasteurization. Practical applications Restructured pimiento strip for stuffing into cocktail olives is a challenging problem in binary composite hydrogels of alginate and guar gum. The strips should be designed to be strong enough to handle mechanically and cut easily without tearing. Furthermore, it had to withstand to pasteurization process and be flexible to bend like a hairpin into the pit hole of olive. In addition, it also had low syneresis and shrinkage that the strips not fall out of the olive hole during storage. In the view point of marketing and nutritional aspects, it is more advantageous to develop a restructured fruit gel systems several times higher than the limiting 10% pulp because of its weak structure. Therefore, alginate‐gel systems containing 25% pimiento pulp were evaluated at different levels of calcium chloride and thermal processing.
In this study, the effect of guar gum (0.5%–1% w / w ), sodium alginate (1%–2% w / w ), and calcium chloride (2%–8% w / w ) on textural properties of restructuring pimiento strips (RPS) was investigated. The gums were added to the pimiento strip formula, and different quality attributes including rupture force, energy to fracture, hardness, adhesiveness, cohesiveness, springiness, and chewiness were determined. Based on the textural properties of RPS, it was optimized by response surface methodology. All the textural properties of RPS were found to be significantly affected by alteration in guar gum, sodium alginate, and calcium chloride. The regression models for product’s response like rupture force and energy to fracture were highly significant. Results showed that restructured pimiento strip formula containing guar gum 1% w / w along with sodium alginate 2% w / w and 8% calcium chloride improved the textural and tensile properties. According to the RSM results on the textural properties of RPS, it is feasible to achieve the high elasticity and rigidity of pimiento strips as well as obtain the ability to tolerate thermal and mechanical stresses with appreciable textural integrity during processing such as pasteurization that would be investigated in another work.
This study investigated the effect of gender stereotypes on (a) a soccer learning task based on accuracy (i.e., shooting on different size targets) among young adolescents and (b) the strategy used to score as many points as possible. After performing 10 baseline trials, 45 young adolescents were randomly divided into three groups: positive stereotype, negative stereotype, and control. Then, they performed five blocks of 10 trials and two retention tests, 1 and 3 days after the stereotype manipulation to assess the relatively permanent consequences of stereotype effects. Results showed that when the negative stereotype was induced, participants performed worse during the acquisition phase and the first retention test. The positive stereotype only had a positive effect on performance during the second retention test. These findings provide the first evidence of the effect of gender stereotypes on motor learning tasks requiring accuracy among young adolescents.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.