1 Introduction</h5> Plant-based products gain increasing importance in fields of nutrition, cosmetics and pharmaceutical industries. In recent years, the FAO (Food and Agriculture Organization of the United Nations) predicted annual growth rates of 6–8% for plant-based medical foods and phyto pharmaceuticals. Actually, in the USA, growth rates for these products lie about 15% and hence are higher than initially predicted [1–3] . Besides plant-based pharmaceuticals, for cosmetics and wellness products as well as plant-based flavors and perfumes double-digit annual growth rates are predicted [4–9] . Here, not only the primal extract can be named as a product, but as well the purified substances out of these extracts.</P>Pretreatment of the raw material and the extraction of valuable components are first steps in processing. Actually, due to a lack of physico-chemical fundamentals these unit operations are economically not optimal designed. First methodical approaches to design optimal processes are published for the extraction [2,10–12] as well as for further purifications of plant-based extracts  . For design and optimization of solid–liquid extraction processes, currently statistical experiment planning and physicochemical modeling are mostly investigated. First and foremost, equilibria as well as mass transport kinetics for target and side components are in focus.
Ultrasonics Sonochemistry – Elsevier
Published: May 1, 2014
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