0000004455 00000 n 1253 37 0000001060 00000 n Corn oil . 0000008646 00000 n 0000065751 00000 n Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Refractive Index and Fourier Transform Infrared Spectra of Virgin Coconut Oil and Virgin Olive Oil . 0000006078 00000 n 360. The measurement of refractive index was carried out using a minimum deviation method while the IR transmission ranging from 600-4000 cm-1 was measured using FTIR spectrometer respectively. 0000002569 00000 n 0000002000 00000 n 0000012130 00000 n 3.2 Virgin olive oil: virgin olive oil with a free acidity, expressed as oleic acid, of not more than 2.0 Essential oils consist of many different compounds. 0000011513 00000 n 329. Many materials have a well-characterized refractive index, but these indexes depend strongly upon the frequency of light. 0000002606 00000 n <<679468B0B0128441B9B9DA825D3770CC>]>> It can thus provide insight as to their quality. Some of them are necessary (e.g. Moreover, it helps to differentiate between different essential oils. 0000015468 00000 n %PDF-1.4 %���� 0000065696 00000 n How to Cite: Yunus, W. M. M., Fen, Y. W. & Yee, L. M. (2009). These measurements can therefore also provide insight into the quality of essential oils, as any change in their optimal composition will affect the refractive index. Copyright © 2003 - 2020 Science Publication PTY LTD, https://doi.org/10.3844/ajassp.2009.328.331. Refractive Index of Essential Oils The refractive index of essential oils is a quickly measured, easily generated quality parameter. x�b```b``Se`e``9� �� @16�� endstream endobj 1288 0 obj<>/Size 1253/Type/XRef>>stream 0000007766 00000 n 0000012797 00000 n 0000005442 00000 n 0000004915 00000 n 0000004877 00000 n This information is used to improve the website. For both, refractive index and Cauchy constants, the value obtained are higher in virgin olive oil as compared to virgin coconut oil. Data security: Varying degrees of security can be set, which include electronic signature and audit trail (not Abbemat 200). Usually the Refractive index of the water is taken as 1.33 and of oil is 1.58. so you can clearly see that the RI of oil is higher than that of water. 0000005692 00000 n Marketing cookies are used by third parties or publishers to show you personalized advertising. 0000001487 00000 n We use cookies on our website. _j 8Opp1p�r�20�Uzf��pj3(��ڻ�N�N�25*�x��Bo��L����%����1;��#��7)l6T��҉`�s�\f?���r�&�vtt4�Y�P�FGX�L B8i�I��LP���@ �����X,� Essential oils such as lemon or orange oil are also referred to as volatile oils. x���A 0ð4t�y\Gcw��������z�C. 0000057942 00000 n 0000002160 00000 n 0000010234 00000 n 1289 0 obj<>stream Here you can find an overview of all used cookies, get detailed information, and decide which cookie types to accept. Content from video platforms and social media platforms is blocked by default. xref 0000003863 00000 n Manage your online orders and purchase settings, Get full access to download all documents, Pharmaceutical instrument qualification service, Peltier temperature control: The refractive index is dependent on the temperature of the sample.The, Measurement accuracy: Depending on the chosen. These essential oils are often obtained by distillation. for the shopping cart), others help us make our online content better and easier for you over the long term via analysis, external media, and marketing services. 0000005738 00000 n 0000065267 00000 n International regulations such as the official AOAC method 920.141 "Refractive Index of Lemon and Orange Oils", the ISO 280 "Essential oils - Determination of Refractive Index" as well as international pharmacopoeias require the measurement of essential oils with a refractometer. They do this by tracking which websites visitors go to.
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