How to extract grape seed oil without generating oil-in-water emulsion?
A combination of wet enzymatic extraction and pressing was used to extract grape seed oil without generating an oil-in-water emulsion or wastewater. The steps of this specific process include wetting, softening, cracking, enzymolysis, drying, and pressing.
How does mechanical treatment of grape seed affect oil extraction?
It is well known that mechanical treatment of grape seed has a large impact on the oil removal, since it breaks plant cell walls, augmenting oil accessibility. Hence, the lower the particle size, the higher is the extraction yield. However, it is not recommendable and sometimes it is almost impossible to process such fine powders industrially.
Does enzymatic treatment increase the extraction of grape seed oil?
This fact induced us to study the effect of an enzymatic treatment to increase the extraction of grape seed oil. Experiments have shown that the output increases after increasing both concentration and treatment times. By contrast, pH and temperature give rise to opposite behaviour.
What factors affect grape seed oil extraction?
The lower probability values indicate the increased significance of the factors on grape seed oil extraction. One of the three significant variables, comminution degree, exerted a positive effect, whereas enzyme additive amount and squeezed water had negative effects on the extraction of grape seed oil.