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Study on Antioxidant Activities and Microencapsulation of Caraway Essential Oil

Author: SunMoLei
Tutor: JiangZiTao
School: Tianjin University of Commerce
Course: Of Food Science
Keywords: Caraway oil Steam distillation. Microwave-assisted steam distillation. Gas chromatography - mass spectrometry Oxidation resistance β-cyclodextrin Microencapsulation
CLC: R285
Type: Master's thesis
Year: 2010
Downloads: 124
Quote: 0
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Abstract

Caraway seed (the scientific name Carum carvi L) is the Umbelliferae, the English called \Its seeds containing volatile oil (3% to 6%), mainly used for medicinal and food additives. The plant is a perennial herb, located in West Asia, Europe, and China's northeast, north, northwest, Sichuan and Tibet. It can strengthen eyesight, can tone fragrant. Europe since ancient times it used as a spice and aromatic carminative medicine, our country as commonly used in Tibetan medicine. Caraway oil is widely used as food additives, flavoring agents and cosmetics flavor, etc.. This paper studies the caraway essential oil extraction method, antioxidant activity and molecular microencapsulation. Subject study includes three parts: (1) the use of steam distillation and microwave-assisted steam distillation extraction of essential oils from caraway determine the optimum extraction process of steam distillation of caraway: liquid ratio 1:50 in atmospheric pressure distillation 2h, the availability of caraway oil yield is 4.7%; microwave-assisted steam distillation to extract the best conditions: liquid ratio of 1:50, set 800W microwave radiation power, use of the microwave plant cells broken time of 4min, the use of microwave heating extraction of caraway essential oils time of 1h the caraway oil yield up to 4.2%. Caraway caraway essential oil by gas chromatography - mass spectrometry (GC-MS), respectively, of the above two methods to extract the components were analyzed: steam distillation extraction of essential oils of caraway and microwave-assisted steam distillation extraction The main component of the sub essential oils are limonene and carvone. (2) This article from the hydroxyl radical scavenging ability, superoxide anion radical, overall antioxidant capacity of these three aspects of evaluation of the antioxidant activity of the essential oil of caraway. The results show that, caraway oil with good antioxidant activity in a certain concentration range. (3) the use of fluorescence spectrometry caraway oil and β-CD and its three derivatives form a molecular ratio of 1:1 inclusion complex. Saturated aqueous solution method in Ph-cyclodextrin under neutral conditions with essential oils is easier to form than the inclusion complexes. Through the study of the thermodynamic parameters, the entropy and enthalpy changes that the inclusion reaction is exothermic, and van der Waals forces in the whole process also plays a larger role. Infrared absorption spectroscopy and microscopic imaging for the detection means to prove the formation of inclusion complexes of β-CD caraway oil.

Study on Antioxidant Activities and Microencapsulation of Caraway Essential Oil

Abstract

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