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Craft Beer elaboration from partial replacement of malt by honey

In recent years, two trends has excelled in the universe Brewer: getting beer from concentrated musts and the elaboration of beer using special assistants, which may or not aromatize the same, in order to obtain unique sensory attributes in products obtained. The honey of Apis mellifera, is raw material quite favorable to the alcoholic fermentation for being rich in carbohydrates, minerals and low acidity. The present study aimed to develop artisanal beer, using honey as malt and partial substituent as natural flavouring of craft beers. Four different formulations were made of beer, being a replacement for malt-free honey and three other formulations, with respectively 10%, 20% and 30% of honey. Based on the results observed it was concluded that the use of honey in the three levels of substitution allowed obtaining higher-alcohol beers (5.21, 5.76 and 5.57% v/v) in respect of conventional beer (4.86%, v/v). According to the sensory tests the drink proved with consumption potential, since the beers showed distinct features and samples containing honey were the most accepted. Considering that this type of beer is not traditionally consumed in Brazil, this work aims to broaden scientific knowledge in the area of manufacturing technology of honey beers, since the subject is of great importance to enlarge the market of this product.

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Cassava starch (Manihot esculenta Crantz) esterified with stearic acid

<p>The objective of this study was to esterification cassava starch with stearic acid, to obtain starches with emulsifying properties, stabilizing and encapsulant of oleic acid. The cassava starch was treated with stearic acid in an alkaline medium (pH 8.0, 9.0, 11.0 and 13.0) and catalyzed by microwave radiation, to obtain the saturated ester starch. The percentage of esterification and degree of substitution (DS), the swelling power and solubility, the apparent viscosity of gels, emulsifying activity and the stability of the emulsions prepared with the modified starches were determined. The use of modified starch in the encapsulation of oleic acid and salad dressings was assessed. The pH of the reaction influences the content and esterification in the GS, only sample evaluated at pH 13.0 showed no percentage esterification. The modification reduced apparent viscosity, the swelling power and the solubility of the granules. Esterification at pH 8.0, 9.0 and 11.0 increased the emulsifying stability and encapsulation efficiency of the starches. Could not find correlation between encapsulation efficiency and the hydrophobicity of the starches. The application of modified starch in sauces like mayonnaise for salads did not show favorable results since the emulsion formed was not stabilized. The emulsion stability was compromised due to low viscosity of the starches after modification</p>

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Achievement of Jabuticaba vinegar by spontaneous fermentation

Vinegar is a very popular food used as a condiment and preservative, however, manufacturers have produced vinegar from raw materials of low quality and without economic value, not being given importance to this product. As jabuticaba presents considerable amounts of soluble solids, vitamin C and phenolic compounds, it’s use in the production of vinegar would be an alternative, resulting in a product with higher added value. The aim of this study was to produce vinegar from jabuticaba by spontaneous fermentation changing evaluating the fermentation conditions: concentration of sugar and ratio water/jabuticaba, their influence on fermented. Product fermentations were monitored by determination of pH, acidity, total soluble solids (TSS) and reducing sugars in glucose. After stabilization of TSS the ethanol content was determined. The ethanol content obtained ranged from 2.1 to 10.7%. The addition of sugar had a positive effect on ethanol production and the increase of ratio water/jabuticaba had negative effect, both significant (p < 0.05). Assays with higher ethanol concentrations (7.8 and 10.7%) resulted in products with lower acidity. Nevertheless, the central points (5.2, 5.7% ethanol) presented higher levels of acidity (~ 3% acetic acid), suggesting a possible inhibition of acetic bacteria naturally present in the must, at concentrations of ethanol above 5%.

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Sterilization Plant simulation of whole milk UHT Type through the Aspen plus

<p>The milk sterilization process aims to diminish or extinguish the microbial load present in the food in order to reduce possible damage arising of the metabolic processes of microorganisms that might be present in food. The system currently used in milk processing plants have direct injection principle oversaturated steam in a certain volume of milk in order to establish microbiological reduction, then the product is directed to a tank where flash evaporation condensed the steam is taken off after the product part to the homogenizer where fat molecules are broken making the standardized product. In this whole process is used a system called VTIS (Vacum Therm Instant Steriliser) developed by Tetra Pak company that consists of a piece of equipment back to the sterilization of liquid foods. The computational model used the Aspen plus programmable plataform that by means of unit operations allows you to predict the behavior of a process, this plataform lets you interactively vary some elements of the process in order to obtain desired results through the flowsheets of feed compositions and operating conditions. The ASPEN plus enables the realization of sensitivity analysis, generation of graphs and tables, estimation, regression of physic-chemical properties, settings of simulation models the operative data, equipment sizing, cost analysis, and data input sheets of calculations. As a result was able to reproduce a process without the need for costs.</p>

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Wasabi Japonica antimicrobial effect on pathogenic bacteria and microbiological quality of salmon sushi samples in two establishments in the city of Toledo – PR, Brazil

<p>The foodborne illnesses are attributed to ingestion of contaminated food, mainly due to improper handling and lack of sanitary conditions. Foods that are handled and eaten raw, such as traditional Japanese food, sushi and sashimi are targets of global concern. So it is necessary to analyze them to identify microbiological contamination and thus prevent them. The Wasabi Japonica is traditionally consumed with these foods and may have antimicrobial activity. Therefore, the aim of this study was to evaluate the microbiological quality of salmon sushi sold in the city of Toledo - PR and verify the antimicrobial effect of 'wasabi' on pathogenic bacteria. We investigated Salmonella spp., Bacillus cereus, Escherichia coli and Staphylococcus aureus, in samples of salmon sushi and determined the antimicrobial effect of wasabi Japonica, by determining the Minimum Inhibitory Concentration and the disk diffusion test (antibiogram). It was concluded that all the samples of salmon sushi analyzed were considered satisfactory and safe for human consumption, with good quality and within the hygienic-sanitary parameters established by law. Furthermore, the bacteriostatic action was confirmed in the "wasabi" against the pathogens that are possibly detected in these foods.</p>

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Obtention of esterified green banana flour with lactic acid

<p>The aim of this study was to produce green banana flour, modify it through esterification with lactic acid (2.5%) at 110ºC, and utilize it as a parcial substitute of fat in bakery products. It was evaluated the percentage of lactilo formation, apparent viscosity, solubility and swelling power, paste clarity, retrogradation and specific volume of the cake. The results showed that the esterification process occurred on the flour by lactic acid. It was observed an increase in the solubility index of the samples, which can be related by a higher starch hydrolysis of the flour, by lactic acid, with the increase of the heat treatment time. The addition of lactic acid to the flour, followed by drying at 50ºC or heat treatment at 110ºC caused the increase of the swelling power of the samples comparing with the native flour. In the analysis of the apparent viscosity, it was observed that the modified samples and submitted to the heat treatment, was lower than the native sample without heat treatment. In the determination of the clarity of the paste, it was detected that the samples treated with lactic acid and submitted to the heat treatment had a increase in the clarity as the increase of the heat treatment time. The evaluation of the propensity for retrogradation showed a strong water release for all the samples. In the characterization of the cakes, it was found that the green banana flour, esterified with lactic acid (2.5%) through heat treatment, allowed its application in bakery products with low fat content.</p>

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