ΣΥΜΒΟΛΗ ΣΤΗ ΜΕΛΕΤΗ ΤΟΥ ΕΞΕΥΓΕΝΙΣΜΟΥ ΥΨΗΛΟΒΑΘΜΩΝ ΠΥΡΗΝΕΛΑΙΩΝ

THE DEGUMMING AND ALKALI REFINING OF SOLVENT-EXTRACTED OLIVE OILS WITH - 25% ACIDITY IS EXAMINED. THE DEGUMMING BY HYDRATION OF PHOSPHATIDES AT 80 C, WITH 2-5% H2O AND CONTACT TIME 10 MIN RESULTS TO - 35-40% REMOVING OF PHOSPHOROUS CONTENT IN CRUDE OIL. THE DEGUMMING RESULT IS IMPROVED BY INCREASING THE CONTACT TIME, BUT IT'S NOT RECOMMENDED BECAUSE OF THE INCREASE OF THE DEGUMMED OIL ACIDITY. THE ALKALI REFINING WITH 15 BE NAOH IN 20% EXCESS AND WITH ADDITION 10% NACL (TO THE ALKALI SOLUTION) OBTAINED REFINING FACTORS: A) IN UNDEGUMMED OILS 2,06 AT 78 C AND B) IN DEGUMMED OILS 2,04 AT 68 C . THE NEUTRALIZED OILS HAVE AN ACIDITY < 0,2%, PPM P < 10 AND ARE PARTLY DECOLORIZED. DURING THE DEGUMMING THE STEROLS ARE REMOVED WITH THE GUMS, MAINLY STIGMA STEROL. DURING THE NEUTRALIZATION OF UNDEGUMMED OILS THE REMOVEMENT OF STEROLS IS LARGE, MAINLY B-SITOSTEROL AND STIGMASTEROL. BUT DURING THE NEUTRALIZATION OF OILS THE REMOVEMENT OF STEROLSIS SMALL, MAINLY B-SITOSTEROL. THE SQUALENE IS FOUND IN TRACES IN THE CRUDE AND ALSO IN THE DEGUMMED AND IN NEUTRALIZED OILS.

Grantor dc:publisher

Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ)

Year dc:date

1987

Author dc:creator

• Τζιά, Κωνσταντίνα

• ALKALI REFINING OF OILS
• DEGUMMING OF OILS
• OILS AND FATS
• REFINING OF OILS
• SOLVENT EXTRACTED OLIVE OILS
• Squalene
• Sterols
• STEROLS OF HUSU OILS IN REFINING
• UNSAPONIFIABLE MATTER OF OILS
• ΑΛΚΑΛΙΚΗ ΕΞΟΥΔΕΤΕΡΩΣΗ ΕΛΑΙΩΝ
• ΑΠΟΚΟΜΜΙΩΣΗ ΕΛΑΙΩΝ
• ΑΣΑΠΩΝΟΠΟΙΗΤΑ ΣΥΣΤΑΤΙΚΑ ΕΛΑΙΩΝ
• ΕΞΕΥΓΕΝΙΣΜΟΣ ΕΛΑΙΩΝ
• ΛΙΠΗ ΚΑΙ ΕΛΑΙΑ
• ΠΥΡΗΝΕΛΑΙΑ
• Σκουαλένιο
• Στερόλες
• Engineering and Technology
• Chemical Engineering
• Επιστήμες Μηχανικού και Τεχνολογία
• Επιστήμη Χημικού Μηχανικού

Language dc:language

gre

Identifier

10.12681/eadd/0610

OAI identifier oai:identifier

oai:10442/0610