tailieunhanh - Báo cáo vật lý: "Physical and Chemical Characteristics of Citrullus lanatus Var. Colocynthoide Seed Oil"

Tuyển tập các báo cáo nghiên cứu khoa học trên tạp chí khoa học vật lý quốc tế đề tài: Physical and Chemical Characteristics of Citrullus lanatus Var. Colocynthoide Seed Oil | Journal of Physical Science Vol. 19 2 69-75 2008 69 Physical and Chemical Characteristics of Citrullus lanatus Var. Colocynthoide Seed Oil . Ziyada1 and . Elhussien2 department of Applied Chemistry and Chemical Technology Faculty of Engineering and Technology National Oilseeds Processing Research Institute University of Gezira Wad Medani . Box 320 Sudan Corresponding author abubakrkhz@ Abstract Citrullus lanatus var. Colocynthoide is one of the species of the Cucurbitaceae family which grows abundantly in Sudan. In this study it was investigated as a new source of vegetable oil. An oil content of 35 was obtained. The extracted oil showed high stability against oxidation with low level of trace elements and phosphorus compared to other edible vegetable oils. The oil showed high degree of unsaturation and fatty acid composition was found in the range adopted by Food an Agriculture Organization FAO . The IR spectrum is typical of that the vegetable edible oil. Most of the physicochemical properties were similar to those reported for cotton seed groundnut and sunflower seed oils. Keywords Citrullus lanatus var. Colocynthoide oil content physical and chemical characteristics 1. INTRODUCTION Oils and fats are substances of vegetable or animal origin. They are insoluble in water and greasy to touch. The most important characteristic is that they have a caloric content more than twice as high as the other food stuff 9 kcal g-1 .1 Also they act as lubricants during mixing of ingredients and as media for heat transfer carrier for fat soluble vitamins. Also they are a source of essential fatty The plants and animals that produce oils and fats in plentiful quantity and in a sufficiently available form for it to be an article of commerce are comparatively few. The larger source of oils at present is the seeds of annual The high world demands for oils and fats to meet the multiplex human consumption and the multitudinous industrial needs are .