Edible oil, being obtained from vegetable sources, is primarily composed of fatty acids and used for cooking, medicinal and cosmetic purposes. It is estimated that about 90 per cent of vegetable oils are used for edible purposes. The sunflower oil used as based oil for replacement. The sunflower oil was replaced by (40-85), mustard, soybean and groundnut are each (5-20%). During the storage of individual and blended oil, pH, density and specific gravity value was decreased with increasing the storage period and types of storage condition. During the storage of individual and blended oil, free fatty acid was increase with increasing the storage period and types of storage condition. During the storage of individual and blended oil, iodine value was decrease with decreasing the storage period and types of storage condition. Peroxide value was increased with increasing the storage period and types of storage condition. Edible oils processing poses challenges due to its high content of polyunsaturated fatty acids and bioactive compounds. The oils refining objective is to remove completely all the minor compounds which are present in the crude oil: free fatty acids, peroxides, phospholipides, pigments, water, heavy metals and all the insoluble impurities which affect both the commercial quality and the shelf-life.

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Some of the authors of this publication are also working on these related projects:Development and standardization of processing technology for value added products from mushroom and their quality assessment View project Studies of physical properties of tomatoes and effect of hydrocolloids on quality of ketchup View project

Drying is an essential process in the preservation of agricultural products. Various drying methods are employed to dry different agricultural products. Each method has its own advantages and limitations. Choosing the right drying system is thus important in the process of drying agricultural products. An experimental study was performed to determine the drying characteristics of bael pulp subjected to drying in open sun, hot air oven at 60 0 C and 70 0 C and cabinet tray dryer at 60 0 C and 70 0 C with different varieties Pant Aparna (V 1 ), Pant Shivani (V 2 ) and Pant Urvashi (V 3 ). The entire drying process took place in the falling rate period. Drying curves were constructed using non-dimensional moisture ratio (MR) and time. Drying is the most widely used and a primary method for preservation. According to the experimental result this study revealed that the V 1 (Variety Pant Aparna) sample required lower drying time than the other Varieties sample. The drying time decrease with increase of drying air temperature. It was observed that drying process took place in falling rate period. The result indicated that the cabinet tray dryer at 70 0 C was found better drying characteristics compare to other drying temperatures and methods.

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