Marina Rojas, winner of the I Scientific Contest organized by The English Centre

by | Jun 13, 2022 | Baccalaureate, Biology, Science, Yago School

The Extended Essay is one of the core components of the IB Diploma Programme (DP), an individual student-led research project, completed after two years with a 4,000-word essay.

A research exercise, and an opportunity for each student to develop his or her curiosity about a topic related to one of his or her subjects. Skills such as analysis, synthesis and evaluation are developed, and students master the ability to expose accurately the initial research questions and the conclusions after the study is completed.

Marina Rojas, supervised by her Biology teacher and tutor Ms. Bell, has presented her essay in a competition at The English Centre of Puerto Santa Maria, Cádiz, winning a first prize for the quality of her work. Marina Rojas, student of 2nd year of Baccalaureate– DP2, has studied the effect of essential oils of plants as alternative disinfectants to hydroalcoholic gels, in order to prevent damage to the skin. 

Marina wanted to improve the quality of life of all those who suffer from erythema pernio or chilblains, an inflammation of the subcutaneous blood vessels that is characterized by tingling, irritation and pain, caused by cold and humidity, and favored by the dehydration produced by the hydroalcoholic gels so widely used during the pandemic and even today. 

Being a disease without a specific treatment, the aim of Marina’s research was to prove that the natural essential oils of various plants, chosen according to their properties, can perform an antiseptic function and replace the hydroalcoholic gels that are so harmful to the skin. Marina wanted to demonstrate the effectiveness of Savory, Tea Tree, Lavender and Oregano as a natural barrier and to determine which of them most efficiently inhibits the growth of microorganisms on the hands.

In this study, the results obtained by Marina suggest that savory essential oil and oregano essential oil can be used as an antimicrobial agent, confirming that the inhibition effect of both is effective against the growth of a representation of microbiota of the hands and therefore would be suitable to perform an antiseptic action against it, which could be due to the chemo-active components that they share. Also, the essential oils of savory and oregano are a natural source of hydration, therefore the union of hydration and disinfection of pathogens, make them the ideal hand antiseptic for people suffering from pernicious hand erythema. 

An excellent work that has taken her to win the First Prize in her category of the Science Competition organized by The English Centre. The objective of the competition was to encourage creative activities in the scientific field among students of Secondary, Baccalaureate and Technical Training Cycles with works related to experimental sciences, in areas such as: food and health sciences, environment and climate, zoology, botany, chemistry, physics, technology… Different categories were established, some for students of the organizer school and others for students from all the schools in Spain.

You can find more information about the winners of the different categories in the following link:

We couldn’t be prouder of Marina, you will have a brilliant future. You are outstanding!

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