In this thesis we review the extraction methods of bioactive compounds from various pomaces. Production of vegetable oils yields several by-products including pomaces. Disposal of large amounts of waste biomass on smaller area might represent a burden for the environment. Pomaces produced by pressing offer many possibilities for further use. Pomaces are relatively low in fat, but still contain various nutrients and secondary metabolites. They are good source of dietary fibres, proteins, vitamins, minerals and phenolic compounds. Extraction of bioactive compounds from waste products is becoming increasingly more popular in industry, for this reason new, greener and more effective extraction techniques have been developed, such as ultrasound assisted extraction, microwave assisted extraction, supercritical extraction, enzyme assisted extraction, extraction techniques with deep eutectic solvents. Extraction techniques such as maceration and solid-liquid extraction are also still in use. They can be used in agriculture as fertilizer and additives to feed for livestock. In food industry extracts of pomaces are used for preparation of nutritionally fortified foods. In pharmaceutical and cosmetics industry, the extracted bioactive compounds can be used as auxiliary or active substances.
|