Plan af Willmanstrand / utgifven 1838 af C. W. Gyldén.

[1:4000].

Estudo das variáveis de processo sobre a cinética de desidratação osmótica de melão

A desidratação osmótica representa uma alternativa tecnológica à redução das perdas pós-colheita de frutos. O presente trabalho visou avaliar a influência da concentração da solução osmótica, da proporção fruto:solução osmótica e da pressão do sistema sobre a cinética de desidratação osmótica de melão. Foram utilizadas soluções de sacarose a 45º, 55º e 65ºBrix a 65ºC, nas proporções fruto:solução osmótica 1:2 e 1:4. Os tratamentos osmóticos foram desenvolvidos sob pressão atmosférica e vácuo, por cinco horas. A utilização de vácuo na desidratação osmótica de melão intensificou os fluxos de transporte de massa no sistema quando comparados aos dos processos sob pressão atmosférica, nas mesmas condições de concentração e proporção fruto:solução osmótica. O tratamento osmótico a vácuo, em que utilizou-se solução de sacarose a 65ºBrix e proporção fruto:solução osmótica 1:4, mostrou-se eficiente por acelerar a perda de água do produto, possibilitando alcançar em um curto período de tempo um alto grau de desidratação com um ganho de sólidos relativamente pequeno, quando comparado aos demais tratamentos estudados. A cinética de desidratação osmótica de melão é influenciada pelas condições de processo, notadamente pela pressão do sistema e concentração da solução osmótica.

Emil eller om uppfostran. Af J. J. Rousseau medborgare i Geneve. Öfversättning af J. W. Tuderus. Första tomen

Motto: Sanabilibus aegrotamus malis; ... Seneca.

Use of cereal bars with quinoa (Chenopodium quinoa W.) to reduce risk factors related to cardiovascular diseases

Quinoa is considered a pseudocereal with proteins of high biological value, carbohydrates of low glycemic index, phytosteroids, and omega-3 and 6 fatty acids that bring benefits to the human health. The purpose of this study was to investigate the effects of quinoa on the biochemical and anthropometric profile and blood pressure in humans, parameters for measuring risk of cardiovascular diseases. Twenty-two 18 to 45-year-old students were treated daily for 30 days with quinoa in the form of a cereal bar. Blood samples were collected before and after 30 days of treatment to determine glycemic and biochemical profile of the group. The results indicated that quinoa had beneficial effects on part of the population studied since the levels of total cholesterol, triglycerides, and LDL-c showed reduction. It can be concluded that the use of quinoa in diet can be considered beneficial in the prevention and treatment of risk factors related to cardiovascular diseases that are among the leading causes of death in today's globalized world. However, further studies are needed to prove the benefits observed.

Developing novel one-step processes for obtaining food-grade O/W emulsions from pressurized fluid extracts: processes description, state of the art and perspectives

Abstract In this work, a novel on-line process for production of food-grade emulsions containing oily extracts, i.e. oil-in-water (O/W) emulsions, in only one step is presented. This process has been called ESFE, Emulsions from Supercritical Fluid Extraction. With this process, emulsions containing supercritical fluid extracts can be obtained directly from plant materials. The aim in the conception of this process is to propose a new rapid way to obtain emulsions from supercritical fluid extracts. Nowadays the conventional emulsion formulation method is a two-step procedure, i.e. first supercritical fluid extraction for obtaining an extract; secondly emulsion formulation using another device. Other variation of the process was tested and successfully validated originating a new acronymed process: EPFE (Emulsions from Pressurized Fluid Extractions). Both processes exploit the supercritical CO2-essential oils miscibility, in addition, EPFE process exploits the emulsification properties of saponin-rich pressurized aqueous plant extracts. The feasibility of this latter process was demonstrated using Pfaffia glomerata roots as source of saponin-rich extract, water as extracting solvent and clove essential oil, directly extracted using supercritical CO2, as a model dispersed phase. In addition, examples of pressurized fluid-based coupled processes applied for adding value to food bioactive compounds developed in the past five years are reviewed.

Försök till en finsk grammatika: framställande en enda declination och en enda conjugation af M. W. Wikström

Nimiösivulla myös: jemte tvenne bihang.