title: The effects of treatment with enzymatic preparations and tannin phenolic absorbent agents in extracting the olive oil by single pressure process on the oil yield, on the analytical characteristics of the oils of the vegetation waters and of the waste waters.
abstract: The vegetation waters of the must, the oils and the waste waters extracted from olive pastes, treated by enzymatic preparations (Cellulase, Hemicellulase, Polygalacturonase and Protease) and tannin phenolic adsorbent agents (Polyclar AT, Methylcellulose, Albumine) employed during crushing of olive were analysed:--the vegetation waters in order to justify some technological results (oil yields and extraction speed) obtained by the treatments;--the oils in order to examine the effects of the treatments on the same chemical characteristics and the stability to rancidity. --The waste waters to verify the possible influence of the treatments on the BOD. From the results relative to the vegetation waters, it has been suggested that the increase of the "detached oil" does occur by two different biochemical mechanisms which involve the constitutive lipoprotein of the oil drop membrane and colloidal constituents of the liquid and solid phase of the pastes. For what concerns the oils, the treatments induce the slight modification of the fatty acid composition and chromatic characteristics, a higher stability to rancidity, a qualitative and quantitative increase of the "headspace" violates constituents above oils. The waste waters obtained from the olive pastes show lower BOD5 values.
mesh_terms: D000327:Adsorption; D002480:Cellulase; D004798:Enzymes; D005511:Food Handling; D007220:Industrial Waste; D008747:Methylcellulose; D009821:Oils / Q000592:standards; D010447:Peptide Hydrolases; D010944:Plants; D011096:Polygalacturonase; D013634:Tannins
chemical_list: D004798:Enzymes; D007220:Industrial Waste; D009821:Oils; D013634:Tannins; D008747:Methylcellulose; D011096:Polygalacturonase; D002480:Cellulase; D010447:Peptide Hydrolases