Extraction of bioactive compounds from Rubus idaeus waste by maceration and supercritical fluids extraction: the recovery of high added‐value compounds.

Summary: High amounts of raspberries are wasted every year, which are rich source of bioactive compounds. Thus, raspberry waste was used to obtain the essential oil by maceration and the oleoresin by supercritical fluid extraction (SFE). Higher amounts of total phenolics (185 mg GAE g−1) and flavonoids (11.0 mg QE g−1) were obtained in oleoresins than in essential oil (131 mg GAE g−1 and 9.0 mg QE g−1, respectively). DPPH radical scavenging was 1350 μm TE g−1 for oleoresins and 890 μm TE g−1 for essential oil. SFE allowed the extraction of compounds not reported before in red raspberry such as a pinocembrin and farnesol. Oleoresin at 20 μg mL−1 induced a decrease in lipid accumulation during the 3T3‐L1 cell differentiation process, but no after cells were differentiated. Red raspberry waste is an important source of bioactives that can be extracted using green technologies to generate high commercial value by‐products. [ABSTRACT FROM AUTHOR]