Biopacking material was obtained by incorporating tangerine peel extract (Citrus reticulata) in cellulose acetate (CA) film. The acetate film with tangerine extract was shown to have a homogeneous material characteristic by FTIR and DSC analysis, being reinforced in MEV and MFA, and showed absence of pores in the film with extract. These characteristics justify the reduced water absorption and release of the CA membrane extract. Low water absorption is important for the film to act as a barrier with external environment and the release of the extract was sufficient to prevent the growth of the strains investigated on the sample surface. The introduction of the extract also reduced the tensile strength and deformation of the film. This study showed the good potential of biomass for active bio packing that can gradually replace non-renewable packaging and take advantage of agricultural waste.

Objective: To investigate factors associated with pregnancy in adolescent couples and the perinatal outcomes. Method:A cross-sectional study with SINASC/SC data, included 17,156 deliveries of primiparous women with single pregnancy. Prevalence ratios adjusted according to hierarchical model and Percentage Attributable Risk (RAP) were calculated to obtain the excess in the chances of the outcomes among the adolescent couples.Results: Findings show that in the 16.6% of deliveries among adolescent mothers, more than 1/3 of these occurred among live births of adolescent parents. This group had a less privileged profile regarding sociodemographic factors, prenatal care and an excess in the relative risk and attributable risk for practically all the variables of interest when compared to pairs of adolescent mother and adult father. Conclusion:When strategies are designed directed at the issue of adolescent pregnancy, it is essential to look at the adolescent couple as a special group, and the adolescent father as an independent factor, with an important role in the final definition of risk in this group.

Materials and Methods:A cross-sectional study was carried out using data from the National School Health Survey (PeNSE), for the year of 2015. Female adolescents from 13 to 17 years of age were included. The dependent variable was pregnancy. The data were analyzed using SPSS 18.0, Chi-square test was applied and prevalence ratios (PR), with 95% CI were obtained, results were considered statistically significant when p value was less than 5%. A model of Multivariate Analysis by Logistic Regression was used, based on a Hierarchical Model.