s at 38°C. Kinematic Viscosity of Vegetable Oils at Different Temperatures. Soybean oil heated at 305 ± 3 °C under a nitrogen purge as described previously (Wang and Erhan, 1999) for a range of time intervals producing oil with a viscosity determined by the Gardner Bubble Viscometer (ASTM D-1545-63, Paul Gardner Co., Inc., Pompano Beach, FL) to be in the range of A–B, B–C, T–U and Z 1 –Z 2, where A is the minimum and Z is the maximum viscosity. 316 Sunflower oil, crude high-oleic . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The absolute viscosities of the different vegetable oils were determined using a Lamy Viscometer RM100, a rotating viscometer with coaxial cylinder. %%EOF Rice bran oil was the most viscous followed closely by macadamia nut oil while walnut oil was the least viscous and followed by grape seed oil among the oils studied. Liu et al. 92 - 106 94 - 101. 300 / 288 / 270. h��Tˊ�0�-�E��a����,��)�,��$��:_�kI��d�M��yt%�)E1��D�j����l�[�e�iɒ>L���Xl��}��թM�����g��i~�R��]G,7�SѻF�:���HAgM�M&�����>ϊ1,�B�,ߗ�ˇq[��G��λ���;�ش��B�S��}��\��mUF�]��A�4t�r(0��kZ�3�����>��{V��n��[��r?m? %PDF-1.5 %���� Based on the rh… In this paper viscosity index of soybean oil was determined using tree methods. [7] reported that the viscosity of oil is one of the main factor which governs oil absorption and drainage. This means that greater energy was needed to effect a viscosity change in the peanut oil. The torque of each sample at different temperatures was recorded at different shear rates. The variation observed for these vegetable oils was probably due to the method of preparation of the oils used in the study (cold pressed, hot pressed, and solvent extracted). Comparing Secondary Coolants - Specific gravity, freezing points and viscosity for … Even though vegetable oils have higher Vis and viscosity than mineral oils, all vegetable oils suffer from lower chemical stability. Sign up here as a reviewer to help fast-track new submissions. The soybean oil from such beans can also vary and the physical properties will also change markedly depending on the processing conditions. For most engineering applications, MRPE values of 10% or lower are acceptable. In this paper viscosity index of soybean oil was determined using tree methods. Oil / Fat. predict viscosity of vegetable oils with an average absolute deviation of 13.0 and 14.5%, respectively. The higher shear range used (64.5 to 4835 s−1) did not significantly affect the absolute viscosities of the vegetable oils at the different temperatures. ere are also number of new vegetable oils such as grape seed, rice bran, macadamia nut, and many others [ ]. Viscosity index was calculated from the measured viscosity at 40°C and 100°C using ASTM Method D 2270 and was graphically determined using ASTM D 341. Both the corn- and soybean oil have a relative high content of PUFA; 56% and 62% respectively. 316 / 266. Sunflower oil, crude mid-oleic . ��,�c �~��cV����P6 ��Ҁḻ^-� ��|�i�, Oil viscosity is typically measured and de ned in two ways, either based on its absolute viscosity or its kinematic viscosity. [20],andNoureddinietal. 6936 0 obj <> endobj 6950 0 obj <>stream Apricot kernel oil 97 - 110. Soybean Oil Reference ID Volatile Organic Compounds (ppm) Benzene 11 ESD 99 26 (a) Toluene 3 3 (a) Ethylbenzene 0 0 (a) Xylenes 0 2 (a) C3-benzenes 2 1 (a) Total BTEX 15 31 (a) Total VOCs 17 32 (a) (a) with dye Surface Tension (mN/m or dynes/cm) Temperature (°C) 0 32.4 ESD 00 32.3 (a) 15 31.8 ESD 98 31.6 (a) 25 31.2 ESD 00 The authors declare that there is no conflict of interests regarding the publication of this paper. endstream endobj 6937 0 obj <>/Metadata 132 0 R/Outlines 148 0 R/PageLayout/SinglePage/Pages 6929 0 R/StructTreeRoot 181 0 R/Type/Catalog>> endobj 6938 0 obj <>/Font<>>>/Rotate 0/StructParents 0/Type/Page>> endobj 6939 0 obj <>stream Soybean oil, fully refined Soybean oil, hardened . The derived Arrhenius type equations were further evaluated for vegetable oils with values of lower than 0.99 using the mean relative percentage error (MRPE) and the results are shown in parentheses next to the values in Table 4. The results show that the selected vegetable oils with values lower than 0.99 have MRPE values of 5% or less. There are 61 viscosity data points gathered from the 7 references listed in [16] which also found the same trend for the different vegetable oils that they studied. This chapter discusses the physical properties of soybeans and soybean products. It is understood that equations with values greater than 0.99 will have lower MRPE values. )�5!Bk:���E�\ �D���t���jF�'�uDJI�UDk�p.#V"d�Cx�v*�� But the results show almost the same viscosity. +�'�"p>�#K��~���!�q�M��C�"}@ 322 / 318. This may be Looking at Fig 3, it might be expected a lower viscosity of these oils at 4°C, compared to the viscosity of for example rape seed oil or olive oil at the same temperature. Absolute Viscosities of Vegetable Oils at Different Temperatures and Shear Rate Range of 64.5 to 4835 s, Department of Wine, Food and Molecular Biosciences, Lincoln University, Lincoln, Christchurch 7647, New Zealand, N. G. Baydar and M. Akkurt, “Oil content and oil quality properties of some grape seeds,”, K. Tomita, S. Machmudah, Wahyudiono et al., “Extraction of rice bran oil by supercritical carbon dioxide and solubility consideration,”, F. A. Silva, A. Marsaioli Jr., G. J. Maximo, M. A.

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