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Citation: Xiaoru Guo, Xiaoman Yu, Yijing Zhang, Zhonglin Lu. A Blaze of Colour——Romantic Encounters with Anthocyanin[J]. University Chemistry, ;2023, 38(4): 124-133. doi: 10.3866/PKU.DXHX202212011 shu

A Blaze of Colour——Romantic Encounters with Anthocyanin

College of Chemistry, Beijing Normal University, Beijing 100875, China

Corresponding author: Zhonglin Lu, luzl@bnu.edu.cn
Received Date: 4 December 2022

Anthocyanin is a kind of natural pigments widely found in plants. It is colorful and has many physiologic functions. In this science popularization experiment, we have extracted anthocyanin from red cabbage both at home and in the lab. By mixing the extracted anthocyanin with aqueous solutions of different pH and iodophor, we have designed three schemes including “The Change of Four Seasons”, “Belt and Road” and “Write with Anthocyanin” respectively, to introduce the structure of anthocyanin, the colour changes of anthocyanin at different pH, and the principle of oxidation resistance. We have also designed a drawing activity called “Freestyle”, in which the audience at different levels can take part in person. From the above mentioned, not only are the beauty and magic of chemistry shown, but also ideological education is concluded. In addition, we have created lovely purple cabbage images and animation to show the functions and applications of anthocyanin in a vivid and interesting way. We have also indicated some common misunderstandings about anthocyanin in daily life and tried to help people use anthocyanin in the proper way. In a word, this science popularization experiment combines science and art, knowledge and education ingeniously. It is also easy and safe enough to be performed at home.
- Anthocyanin,
- Acid-base indicator,
- Oxidation resistance,
- Problems in real life,
- Ideological education
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