Sunflower is grown in different parts of the world and oil from the grain has many uses, including cosmetics and food. Olive leaves are rich in active compounds with potential for industrial use. The simultaneous extraction of raw materials is an economical and sustainable way of using the same extraction process to obtain products with high added value. The aim of this work was to promote the incorporation of bioactive compounds from olive leaves in sunflower oil by two extraction techniques: pressurized propane (PRO) and Soxhlet (SOX) and to evaluate the increase in oxidative stability and antioxidant activity of oils. The techniques used were useful in producing sunflower oil incorporating olive leaf extract (SFO + OLE); 4.3% 1-octacosanol and 5.8% 1-triacontanol were incorporated, and β-sitosterol increased by at least 90%. Also, SFO + OLE showed an increase in the induction time of 2.7 and 3.7 h compared to SFO for the PRO and SOX methods, respectively. The profile of fatty acids was maintained, with the majority in all samples being oleic and linoleic acids. Consequently, with this procedure is possible to produce SFO + OLE with better antioxidant activity and better nutritional characteristics using PRO and SOX. The scaled-up of the simultaneous extraction process via pressurized propane is economically viable according to the process simulation and economic evaluation.

Research activities discuss about the global environmental impacts of carbon dioxide (CO₂) emissions. Government authorities and international conferences aim to reduce greenhouse gas emissions and encourage the development of sustainable processes using renewable sources. In order to reduce emissions from the industrial sector, CO₂ capture and reuse as a raw material in the production of marketable products have encouraged the development of technologies. Among many possible chemical products manufactured from CO₂, sodium bicarbonate appears in this context as an important compound in the chemical, food, textile and pharmaceutical industries. Then, the main objective of this work was to carry out a bibliographical review of the main production processes available in the literature for synthesis of sodium bicarbonate and the main chemical reactions involved in the crystallization reactor. Regarding to the processes, soda ash carbonation from trona, the Solvay process and the sodium sulfate route were assessed and compared. Among the main raw materials used in the production process of sodium bicarbonate, sodium chloride is presented as most economically feasible while sodium carbonate and sodium sulfate are indicated as the most environmentally viable alternatives. Beyond, the global processes were presented for each route discussing advantages and disadvantages for the separation and purification steps required after the reaction. It is notable that the main raw material is sodium chloride due to its easy possibility of obtaining, from seawater, and large availability for applications at the food industry. Indeed, the production of sodium bicarbonate by means of the Solvay process was the route that presented the best results regarding to the technology development and economic cost. Use of sodium sulfate as raw material has proved to be a possible route, besides presenting numerous advantages such as production of valuable byproducts. However, this route may be not totally viable compared to conventional routes due to the complexity of products separation and purification. The review showed that there is a lack in the scientific literature regarding to the development of studies evaluating sodium bicarbonate crystallization and purification in a cost effective and technical detailed approach.