Problems of variability in the design of equipment, the availability of equipment, the changes in the environment and in future changes which have been extensively investigated in order to determine the chances of success in environmental, technological and economic matters. This research considers the variability of the operational parameters in the quality of the final product, as an element in the process design, this approach is not an usual activity. Some previous studies on the production of sugarcane syrup were related to sensory attributes (viscosity, flavor and presence of crystals) with operational parameters (pH and °Brix). It was generated the pH and °Brix using different probability distributions and the results were plotted by control charts. It was determined the influence of the variability of the °Brix in the sensorial acceptance of the final product.
The feasibility of the using of mucilages as viscous hydrocolloids in order to reduce dependence on inorganic products that are unfriendly to the environment, is a necessity that the scientific community must take advantage on behalf of development of new products. The aim was to determine the phytochemical components and thickening capacity of mucilage as a hydrocolloid in a shampoo formula. Phytochemical sieve was done by coloration, precipitation and flotation reactions. Mucilage extraction was performed by hydration-maceration of crushed stems according to experimental design (three factors and two levels) and controlled by the viscosity response variable. For the shampoo, a design of was used (two factors and two levels), evaluated with viscosity response variables and lather formation, results that were tabulated with the statistical software statgraphics plus. The results show in the hydrocolloid the presence of tannins, alkaloids, triterpenes. Its thickening capacity due to the significant viscosity of the hydrocolloid (1186 mPa.s). The viscosity of the shampoo between 1020 and 1460 mPa.s and the amount of foam (213 ml) that reward the quality. It is concluded that, the complex molecular structure and abundant presence of mucilage in its natural state in the stems of Malachra alceifolia Jacq allows the hydrocolloid obtained to have a great viscosifying and moisturizing capacity with an almost neutral pH, qualities that affect the quality of the shampoo and are suitable for commercial products with friendly features to the environment; being promoted as a raw material for formulations of other personal hygiene products with an important projection of immediate application in the pharmaceutical and cosmetic industry.
The objective of the study was to determine the yield and quality of the essential oil of Mentha viridis L., obtained by water-vapor distillation using cohobation. The oil extraction process required an experimental design DCA of 33 with the application of factors such as sample moisture, water volume and extraction time in three levels (high, medium and low). These factors, evaluated by the oil yield response variable, were analyzed using the statistical software statgraphics plus. For the oil components, a gas chromatograph coupled to a mass detector (GC-MS) was used. Extraction results show significance to the oil yield applied to dehydrated leaves, extraction times and amount of water at medium and high levels. The volatile chemical composition of the sample essential oil revealed the presence of 34 components, highlighting DL-carvone with 36.5%, anethole with 15.3%, germacrene D with 8.8% and limonene with 7.2%; Consequently, it is concluded that these components provide aromatic and antioxidant characteristics for functional fragrances to be used in pharmaceutical, cosmetic and food industries. Due to its biological activity, the essential oil is also recommended for the agricultural sector as a bactericidal and insecticidal inhibitor, with prospects for research and immediate application.
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