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Copyright of Revista Brasileira de Obesidade, Nutrição e Emagrecimento is the property of Instituto Brasileiro de Pesquisa e Ensino em Fisiologia do Exercicio and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This study aimed to use the raw extract of jambolão (Syzygium cumini L.) and potassium sorbate as antimicrobial components in cellulose acetate films and evaluate their potential for application as active packaging for sugar-free banana preserve. The films were prepared using the casting method and evaluated for thickness and inhibition potential. The efficiency of the films as active packaging, in situ, was evaluated through the enumeration of aerobic mesophiles and mold and yeast over 36 days of storage of banana preserves. Furthermore, in order to analyze the fungicidal effect of the films against banana preserve with an initial load of microorganisms, mold and yeast were counted for 25 days of storage. The results showed that the incorporation of crude jambolão extract increased the film thickness, and its inhibition potential was similar to the film with incorporated potassium sorbate. Furthermore, the film with crude jambolão extract reduced mold and yeast growth by up to 1 log cycle over 36 days of storage. Furthermore, the use of the film with potassium sorbate promoted the same effect as this preservative added directly to the fruit preserve and proved to be efficient even with relevant initial contamination. Thus, the use of these active packagings presents an opportunity for industries as they reduce health risks and improve the safety and quality of preserves. [ABSTRACT FROM AUTHOR]

Motivated by the lack of studies that standardize and optimize the parameters of texture tests, this study aimed to determine the operating conditions for TPA to maximize the discrimination among samples of fruit preserves. The texture of the commercial guava preserves was evaluated using a texturometer. The Design Central Composite Rotational (DCCR) method was applied with four independent variables: speed test, sample volume, time between compression cycles and compression percentage. Only the compression percentage and test speed were significantly influenced by the texture parameters evaluated. The optimum operating region of TPA to better discriminate differences in texture parameters depended on the variable to be optimized, and for adhesiveness a compression of 75% and a compression speed of 0.23 mm·s are recommended. To detect differences among the samples for the parameters of cohesiveness, gumminess and resilience, the use of 15% compression and 2.59 mm·s speed is suggested. In both cases, one must employ the shortest time between two cycles and use a smaller sample size to save both the time of analysis and of the sample, respectively. For the parameters of hardness, elasticity and chewiness, optimal regions were not identified. [ABSTRACT FROM AUTHOR]

Copyright of Revista Brasileira de Obesidade, Nutrição e Emagrecimento is the property of Instituto Brasileiro de Pesquisa e Ensino em Fisiologia do Exercicio and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The aim of this study was to evaluate the influence of hydrocolloids (low methoxyl pectin [LMP], guar gum, and carrageenan) on the characteristics of low caloric orange jellies. A mixture design with to 12 tests to determine properties of the jellies. Physical, physicochemical, and sensory analyses were performed. The results were analyzed by response surface methodology and a Tukey mean test at a significance level of 5% (p ≤ 0.05). The formulations with high LMP concentration resulted in low caloric orange jellies that have a rigid structure, light color, more acidic nature and exhibited optimal sensory acceptability. The jelly formulations with carrageenan concentration of 0.25% had lower total sugar values. Therefore, for the preparation of low caloric orange jellies, it is necessary to use LMP concentration between 0.75% and 1% and carrageenan concentration of 0%–0.25% as well as to exclude guar gum. [ABSTRACT FROM AUTHOR]