This circulation of waste cooking oil has reached about 18% to 20% of the total circulation of bulk cooking oil in the market which in 2016 amounted to 3.56 million tons in Jakarta Indonesia. The source of waste cooking oil is a former cooking oil from hotels, large stalls and fast food restaurants. Most of these used cooking oil into bulk oil, whether it is mixed or not. This condition automatically limits the circulation of pure cooking oil from indigenous industries. Futhermore this used cooking oil also causes many diseases such as Parkinson’s and stroke,
Based that problem, the two students were Wani Risella Sirait and Emilia Astagina Isbono two student Kharisma Bangsa high school Tangerang Indoseia, two of them is one of the finalists ISPO 2014 and won a silver medal in the 2014 ISPO this event and the right to represent Indonesia in the event that were higher again that INESPO 2014 which this year was held in the Netherlands
In this research work they explained that the cooking oil is an edible oil derived from palm oil using a process of warming at the time of manufacture and is done without any further filtering, so the price is quite economical but quality and hygienist not guaranteed but oil is the most widely used type of in Indonesia, with demand increasing oil then many of the merchants who used to make cooking oil mix it well with the mixture of bulk oil and oil filter re-branded used cooking oil or used cooking oil be used again
With the background of their concern over the dangers of adulterated cooking oil, bulk, and the result filtering, so they make a simple technique to distinguish bulk cooking oil, branded original and filtered cooking oil, because it is physically difficult to differentiate this kind and so difficult when only viewed by naked eye, and below is a picture of the results of the analysis and the their study
From the of this simple results and useful, they also managed to get a bronze medal at the event in 2014 INESPO Hague Netherlands.