Extraction et caractéristiques des huiles de l'argousier (Hippophaë rhamnoides L.). Une étude des effets de la méthode de déshydratation des fruits sur le rendement d'extraction et la qualité des huiles
|Authors:||Gutiérrez Alvarez, Luis Felipe|
|Advisor:||Belkacemi, Khaled; Ratti, Cristina|
|Abstract:||Sea buckthorn (Hippophaë rhamnoides L.) seeds and pulp oils have been recognized for their nutraceutical properties. The effects of air-drying and freeze-drying on extraction yields and quality of oils from sea buckthorn (cv. Indian-Summer) seeds and pulp were studied. Oil extractions were carried out using hexane. Air-dried (ADS) and freeze-dried (FDS) seeds, gave a similar extraction yields (∼12%w/w), whereas those of air-dried (ADP) and freeze-dried (FDP) pulps were significantly different (35.9±0.8 vs. 17.1±0.6%w/w). Fatty acid analysis revealed that α-linolenic (37.2-39.6%), linoleic (32.4-34.2%) and oleic (13.1%) acids were the main fatty acids in seed oils, while pulp oils were rich in palmitoleic (39.9%), palmitic (35.4%) and linoleic (10.6%) acids. Lipid fractionation of crude oils, obtained by solid phase extraction, yielded mainly neutral lipids (93.9-95.8%). The peroxide values of seed and pulp oils were circa 1.8 and between 3.0-5.4 meq/kg respectively. The melting behavior of oils was characterized by differential scanning calorimetry.|
|Document Type:||Mémoire de maîtrise|
|Open Access Date:||13 April 2018|
|Collection:||Thèses et mémoires|
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