Surprisingly and likely due to the high extraction pressure used (103 bars), these conditions appeared to be the best ones both for extracting xanthophylls such as lutein, zeaxanthin or β-cryptoxanthin and carotenes such as β-carotene, which present quite different polarities.
The goal of this work was to study seed oil extraction and solubility under ultra-high extraction pressures.
The power loss coefficient increases with rising feed flow temperature of the district heating system ((T_{text{FF}})), as it requires higher extraction pressures and shifts the load share between the heating condensers.
The operational parameters of PLE, such as extraction solvent, temperature, pressure, static extraction time, flush volume and cycles were optimized by univariate approach coupled with central composite design (CCD) in order to obtain the highest extraction efficiency.
High temperature high pressure.
In short, the extracts obtained at high pressure, high temperature and long extraction time had high yield and high antioxidant activities.
The aim of the study was to use a sequence of high pressure extraction and hydrolysis processes in a cascade to create high potential value added products, namely, proteins, fermentable sugars and lignin.
This study provides an example of biorefining of raspberry pomace by using high pressure extraction.
However, the optimization of any high pressure extraction process requires the knowledge of the solubility of the target compounds to be extracted.
High pressure – high temperature extraction (HPTE) of D-limonene from lemon peels was better than Soxhlet extraction even with low matrix/solvent extraction (1 4) in terms of energy saving (0.6 kW h vs 2.5 kW h), extraction time (30 min vs 4 h) and product yield (2.97% vs 0.95%).
