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<p class="content">After interviewing VEDAN, we learned that UV light will cause the loss of nutrition of the vitamin drinks. Therefore, we decided to invent a sticker to sense both temperature and UV light. We implant a modified gene into e-coli, and after drying them up, we put these e-coli into a specialized sticker, and this completes our device for long-term quality monitoring. The sticker monitors the temperature and UV light in the whole delivery process, and will change color if it detects excessive amounts of the above two factors. By simply taking a glance at it, the customer can directly confirm the condition of the merchandise.</p> | <p class="content">After interviewing VEDAN, we learned that UV light will cause the loss of nutrition of the vitamin drinks. Therefore, we decided to invent a sticker to sense both temperature and UV light. We implant a modified gene into e-coli, and after drying them up, we put these e-coli into a specialized sticker, and this completes our device for long-term quality monitoring. The sticker monitors the temperature and UV light in the whole delivery process, and will change color if it detects excessive amounts of the above two factors. By simply taking a glance at it, the customer can directly confirm the condition of the merchandise.</p> | ||
<p class="content"> In normal conditions, the color of the sticker will be light green, which indicates “safe.” Nonetheless, if the products are exposed to sunlight or a temperature higher than 37 degrees Celsius, the color will change gradually into red or blue, which indicates “not safe.” The longer the sticker is exposed to these less than ideal conditions, the darker its color will become. The cause of both colors is the synthesis of chromoprotein. Chromoproteins are very stable, which means that the color can last for a long period of time.</p> | <p class="content"> In normal conditions, the color of the sticker will be light green, which indicates “safe.” Nonetheless, if the products are exposed to sunlight or a temperature higher than 37 degrees Celsius, the color will change gradually into red or blue, which indicates “not safe.” The longer the sticker is exposed to these less than ideal conditions, the darker its color will become. The cause of both colors is the synthesis of chromoprotein. Chromoproteins are very stable, which means that the color can last for a long period of time.</p> |
Revision as of 01:41, 2 November 2017