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1. THE STUDY OF OREGANO LEAVES (COLEUS AROMATICUS BENTH) AS AIR FRESHENER Abella, Meryl Ann C. Manuay, Khryssle Aprille A. Uy, Guinevere L. Santiago, Joshua O. De Leon, Edrian Cedrick C. Oesterdal, Mark Anton P. 2 nd Year Students of Stella Maris Academy of Davao, section Humility

2. Rationale of the Study

9. Methodology Flow Chart Preparation of Materials Collection of Oregano leaves Chopping of Oregano leaves Extraction of Oregano leaves

10. Figure 2. Flowchart of Making Oregano Air Freshener Methodology Flow Chart Application of Oregano leaves Testing of Oregano leaves as air freshener Evaluation of Data

11. Results Trial 1 5 mins. 10 mins. 15 mins. The mixture with 100% pure Oregano extract and 0% water solution. The mixture was sprayed to a room and observed for 10 mins. After the time allotted, the scent was still there and it smelled good. After another 5 mins. the scent was still there but is didn’t stayed longer unlike the first 5 mins. Another 5 minutes the scent was gone. The mixture with 75% Oregano extract and 25% water solution. For this mixture, 5 mins. was the given time to observe and after that time, the scent was there but not that strong. After another 5 mins. , the scent was almost gone and it was fading. Another 5 minutes the scent was totally gone. The mixture with 50% Oregano extract and 50% water solution. The mixture was sprayed but a little amount of scent was only smelled. The scent was gone. No more scent.

12. Results Trial 2 5 mins. 10 mins. 15 mins. The mixture with 100% pure Oregano extract and 0% water solution. The mixture was sprayed to a room and observed for 10 mins. After the time allotted, the scent was still there and it smelled good. After another 5 mins. the scent was still there but is didn’t stayed longer unlike the first 5 mins. Another 5 minutes the scent was gone. The mixture with 75% Oregano extract and 25% water solution. For this mixture, 5 mins. was the given time to observe and after that time, the scent was there but not that strong. After another 5 mins. , the scent was almost gone and it was fading. Another 5 minutes the scent was totally gone. The mixture with 50% Oregano extract and 50% water solution. The mixture was sprayed but a little amount of scent was only smelled. The scent was gone. No more scent.

13. Results Trial 3 5 mins. 10 mins. 15 mins. The mixture with 100% pure Oregano extract and 0% water solution. The mixture was sprayed to a room and observed for 10 mins. After the time allotted, the scent was still there and it smelled good. After another 5 mins. the scent was still there but is didn’t stayed longer unlike the first 5 mins. Another 5 minutes the scent was gone. The mixture with 75% Oregano extract and 25% water solution. For this mixture, 5 mins. was the given time to observe and after that time, the scent was there but not that strong. After another 5 mins. , the scent was almost gone and it was fading. Another 5 minutes the scent was totally gone. The mixture with 50% Oregano extract and 50% water solution. The mixture was sprayed but a little amount of scent was only smelled. The scent was gone. No more scent.

14. Results Table 1 shows the rate of the lessening of the scent with lesser Oregano extract during a three-day period in three trials. As the table shows, there is a difference on the stronger scent between each trials. The more the Oregano extract the stronger the scent will be. This means that the more the Oregano extract ,the stronger the smell of the air freshener will be.