Fregapane Giuseppe (13 results)

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Taschenbuch. Condition: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - This work initially explores both solvent and cold press extracting techniques of the pumpkin (Cucurbita maxima) seeds of a Tunisian variety named Béjaoui. It additionally compares the chemical composition of the seed oil of the Béjaoui variety with that of a commercial Cucurbita pepo subsp. Pepo var. Styriaca originating from Austria. Both examined pumpkin species and their extraction techniques had significant effects on antioxidant activity, Saturated Fatty Acid (SFA), Polyunsaturated Fatty acid (PUFA), Gamma-tocopherol, and pigment contents. The cold press techniques were found to improve the Gamma-tocopherol content and the oxidative stability when compared to solvent extraction (599.33 mg/kg and 3.84h for the Komet DD 85 G press model against 435.75 mg/kg and 3.88h for the MUV2 65 model). The higher polarity of chloroform/methanol promoted the extraction of polyphenols (54.41 mg GAE/kg). Furthermore, the higher antioxidant activity of pumpkin seed oil extracted by the MUV2 65 press (0.31 mM Trolox/kg) might be attributed to the fat-soluble antioxidants such as Gamma-tocopherols, chlorophylls (179.6 mg/kg), carotenoids (66 mg/kg), and total polyphenol content (36.07 mg GAE/kg).…

Condition: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Rezig LeilaBorn in 1978, Leila Rezig is a Ph.D senior research assistant in food processing. Her doctoral thesis was defended at the Higher School of Food Industries in Tunis. She has worked as a teaching assistant. Her fields of int.…

Taschenbuch. Condition: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Este trabalho explora inicialmente tanto as técnicas de extracção da abóbora (Cucurbita maxima) com solvente como as técnicas de extracção a frio das sementes de uma variedade tunisina chamada Béjaoui. Além disso, compara a composição química do óleo de semente da variedade Béjaoui com a de uma Cucurbita pepo subsp. comercial Pepo var. Styriaca, originária da Áustria. Ambas as espécies de abóbora examinadas e as suas técnicas de extracção tiveram efeitos significativos na actividade antioxidante, Ácido Gordo Saturado (SFA), Ácido Gordo Polinsaturado (PUFA), ¿-tocoferol, e no conteúdo de pigmentos. Verificou-se que as técnicas de prensa a frio melhoravam o conteúdo de ¿-tocoferol e a estabilidade oxidativa quando comparado com a extracção com solventes (599,33 mg/kg e 3,84h para o modelo Komet DD 85 G press contra 435,75 mg/kg e 3,88h para o modelo MUV2 65). A maior polaridade do clorofórmio/metanol promoveu a extracção de polifenóis (54,41 mg GAE/kg). Além disso, a maior actividade antioxidante do óleo de sementes de abóbora extraído pela prensa MUV2 65 (0,31 mM Trolox/kg) pode ser atribuída aos antioxidantes lipossolúveis tais como ¿-tocoferóis, clorofilas (179,6 mg/kg), carotenóides (66 mg/kg), e ao teor total de polifenóis (36,07 mg GAE/kg).…

Condition: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Rezig LeilaDie 1978 geborene Leila Rezig ist promovierte wissenschaftliche Mitarbeiterin im Bereich Lebensmittelverarbeitung. Ihre Doktorarbeit hat sie an der Higher School of Food Industries in Tunis verteidigt. Sie hat als Lehrassi.…