Presentation on theme: "The project description:- UV light generated from the xenon arc lamp penetrates through the wine and interacts with existing compounds. This light breaks."— Presentation transcript:
The project description:- UV light generated from the xenon arc lamp penetrates through the wine and interacts with existing compounds. This light breaks down existing molecules in wine and form new compounds which are shown through the browning of wine, theses new substances formed are called Xanthylium cations pigments. This browning process occurs at - 480nm. It affects the color and smell of wine which than leads to less consumer appeal. Hence, ideas were taken from the participants to explore the way the wine industry could still have high consumer appeal but less carbon emissions.
Projects Importance Reason for Investigation It’s relevance to society: o One disadvantage of wine would be the Indirect Contribution to Global Warming. o Study of degradation of wine under ultra violet light. o Monitor chemical changes using a UV-visible Spectrometer to work out the wavelength at which the absorbance is highest. o Wine industry should initiate action to lower carbon footprints. o The manufacture of green wine bottles has a high energy consumption as more energy is required to recycle them. o Green wine bottles are expensive because due to their weight (Mainly the thickness of glass bottles). o More energy is used to export these bottles from one place to another. Hence, more transportations costs. o Exposing wine to high UV- lights will change its chemical properties like color, smell.
Results:-Results:- The experiment shows that the absorbance of molecules is at its greatest around the wavelength of Ultra-Violet light (less than 400 nm). This result can be useful for the overall project-that is reducing carbon emission in the wine industry. Glass bottles especially the antique-green colored emits an enormous amount of carbon emission when they are produced and recycled. The weight of the bottles is also of great importance as it affects the amount of energy required for transportation. Thus, there have been many proposals saying that by using lighter bottles and clear glass, the wining industry can reduce their carbon emissions. However this might affect the quality and the degradation of wine.
UV- Vis spectrometer :- Provides information :- the color of molecules present in a solution can identify functional groups and is routinely used in chemical and biochemical laboratories. 1. Samples are used in solution and are placed in a small quartz cell. 2. A lamp which provides ultraviolet and visible energy is used. Radiation across the whole range is scanned by the spectrometer (200-800 nm). 3.A reference cell containing only solvent is used. Light is passed simultaneously through the sample cell and reference cell. The spectrometer compares the light passing through the sample with that passing through the reference cell. 4.The transmitted radiation is detected and the spectrometer records the absorption spectrum (Absorbance vs wavelength) by scanning the wavelength of the light passing through the cells. 5.The energies of light that are absorbed by the molecules in solution indicates what species of molecules are present. 6. If the same solution is measured over time the spectra that are collected can tell you what is happening to the molecules in solution.
What made the experiences so unique? Not everyone gets this sort of opportunity during school We get to access the same opportunities and equipment as scientists. We get to talk and spend time with real scientists. We feel more involved with the issues of our world. We learn more experimental techniques like spectrometers that we cannot do at school.
What did I think of this way of learning? 1.Peer learning can improve the overall quality of student learning. 2.Group work provides an opportunity for students to clarify and refine their understanding of concepts through discussion and rehearsal with peers. 3.Group work may reduce the workload. 4.Group work can facilitate the development of skills, which include: teamwork skills (skills in working within team dynamics; leadership skills); analytical and cognitive skills (analyzing task requirements; questioning; critically interpreting material; evaluating the work of others); collaborative skills (conflict management and resolution; accepting intellectual criticism; flexibility; negotiation and compromise); and organizational and time management skills: 'Having to do group work has changed the way I worked. I could not do it all the night before. I had to be more organized and efficient‘
How my views of science and scientists changed Perfect modeling is rare in science. Everyone despite who they are can do science. All different types of sciences are intertwined and leads to many career pathways. Science is about solving the world’s problems, all sciences are relevant and interesting.
Participants and mentors and acknowledgement ARC Centre of Excellence for Coherent X-Rays Science. ARC Centre of Excellence for Coherent X-Rays Science. Santa Maria College Santa Maria College University of Melbourne Chemistry Department University of Melbourne Chemistry Department Professor Trevor Smith, Dr. Daniel Dias, Liisa Smith Professor Trevor Smith, Dr. Daniel Dias, Liisa Smith Akorn Educational Services Akorn Educational Services Catholic Education Office Melbourne Catholic Education Office Melbourne