GMU:DIY Biolab “Driver’s License”/Yang Li: Difference between revisions

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== Object is talking ==
== Object is talking ==


===1. Introduction===
===1. Introduction===
1.1 anthocyanin
1.1 anthocyanin
Anthocyanins are water-soluble vacuolar pigments. In the 1664 book Experiments and Considerations Touching Colours by chemist Robert Boyle, various edible plants are reported as visual pH indicators due to pH-responsive mechanisms in their tissues [1]. Anthocyanin is a kind of natural colorant in food and beverage industry, and has been found to possess anti-inflammatory antioxidant properties [2]. It has also been researched for use as an indicator for packaging applications to detect spoilage in pork and fish products [3]. All tissues of vascular plants contain the flavonoid anthocyanin, a pigment that changes colour under varying pH solutions.
Anthocyanins are water-soluble vacuolar pigments. In the 1664 book Experiments and Considerations Touching Colours by chemist Robert Boyle, various edible plants are reported as visual pH indicators due to pH-responsive mechanisms in their tissues [1]. Anthocyanin is a kind of natural colorant in food and beverage industry, and has been found to possess anti-inflammatory antioxidant properties [2]. It has also been researched for use as an indicator for packaging applications to detect spoilage in pork and fish products [3]. All tissues of vascular plants contain the flavonoid anthocyanin, a pigment that changes colour under varying pH solutions.
Under different pH conditions, the hydroxyl (OH) and/or methyl ether (O-CH3) groups attached to the carbon rings (figure 1) undergo reversible structural transformations and ionizations. Restructuring a molecule changes the way it ab- sorbs light, giving rise to colour changes [4].
Under different pH conditions, the hydroxyl (OH) and/or methyl ether (O-CH3) groups attached to the carbon rings (figure 1) undergo reversible structural transformations and ionizations. Restructuring a molecule changes the way it ab- sorbs light, giving rise to colour changes [4].


[[File:Screen Shot 2018-01-31 at 12.08.56.png|400px]]   
[[File:Screen Shot 2018-01-31 at 12.08.56.png|800px]]   


Figure 1 Chemical diagram of colour-changing anthocyanin pH reaction [5]
Chemical diagram of colour-changing anthocyanin pH reaction [5]


1.2 red cabbage
1.2 red cabbage
"Red cabbage is rich in a number of bioactive substances, including anthocycanins"[Wiczkowski, 2012]. The method of extracting anthocyanin from red cabbage is easy and convenient.
"Red cabbage is rich in a number of bioactive substances, including anthocycanins"[Wiczkowski, 2012]. The method of extracting anthocyanin from red cabbage is easy and convenient.


===2. Idea===
===2. Idea===
This work is based on a research done by MIT media lab that uses organic fluid-based molecules. The molecules anthocyanin, vanillin, chitosan are used as dopants that can sense different pH values. The output is in the form of a broad spectrum of colors, odors and shapes. Based on this, the experiment focus on color changing, using kappa-carrageenan as substrate to present the reaction in a certain form. The outcome shows chemical reactions that are in daily life unreadable and unseen. What is shown here is a new design language to create new appliances. In the exhibition, color changing can be seen both in liquid and solid statues.  
This work is based on a research done by MIT media lab that uses organic fluid-based molecules. The molecules anthocyanin, vanillin, chitosan are used as dopants that can sense different pH values. The output is in the form of a broad spectrum of colors, odors and shapes. Based on this, the experiment focus on color changing, using kappa-carrageenan as substrate to present the reaction in a certain form. The outcome shows chemical reactions that are in daily life unreadable and unseen. What is shown here is a new design language to create new appliances. In the exhibition, color changing can be seen both in liquid and solid statues.  
 
===3. Method===
===3. Methodology===
 
<gallery caption="Color Changing in liquid status">
<gallery caption="Color Changing in liquid status">
File:WechatIMG418.jpeg|1. pH=2 100ml distilled water + 1ml HCL
File:4931517416494_.pic_hd.jpg|Making red cabbage indicator
File:WechatIMG438.jpeg|2. pH=4 100ml distilled water + 0.1g apple acid
File:Screen Shot 2018-01-31 at 15.12.21.png|Making pH solutions
File:WechatIMG433.jpeg|3. pH=5.5 100ml distilled water + 2g H3BO3(Boric acid)
File:WechatIMG429.jpeg|4. pH=7 100ml distilled water
File:WechatIMG436.jpeg|5. pH=8 100ml distilled water + 0.5g NaHCO3
File:WechatIMG427.jpeg|6. pH=11 700ml distilled water + 1ml NaOH
File:WechatIMG424.jpeg|7. pH=12 250ml distilled water + 1ml NaOH
File:WechatIMG420.jpeg|8. pH=13 100ml distilled water + 1ml NaOH
</gallery>
</gallery>
<gallery caption="Color Changing in solid status">
<gallery caption="Color Changing in solid status">
File:4931517416494_.pic_hd.jpg|Making red cabbage indicator
File:屏幕快照 2018-03-31 下午1.40.34.png|1.5%w/v kappa-carrageenan in deionized water   
File:Screen Shot 2018-01-31 at 15.12.21.png|Making pH solutions
File:屏幕快照 2018-03-31 下午1.41.12.png|pour anthocyanin solution  
File:|1.5%w/v kappa-carrageenan in deionized water   
File:屏幕快照 2018-03-31 下午1.41.26.png|make a color film
File:|pour anthocyanin solution  
File:屏幕快照 2018-03-31 下午1.41.39.png|dry the color film
File:|make a color film
File:屏幕快照 2018-03-31 下午1.42.22.png|color changing
File:|dry the color film
File:屏幕快照 2018-03-31 下午1.42.02.png|color changing
</gallery>
</gallery>
<gallery caption="Shape Changing">
<gallery caption="Shape Changing">
File:|4% w/v chitosan powder
File:2018-03-31 下午1.42.36.png|4% w/v chitosan powder
File:|3% v/v acetic acid   
File:屏幕快照 2018-03-31 下午3.21.01.png|3% v/v acetic acid   
File:|1.5%w/v kappa-carrageenan in deionized water 
File:屏幕快照 2018-03-31 下午1.42.48.png|pour chitisan solution  
File:|pour anthocyanin solution  
File:屏幕快照 2018-03-31 下午1.43.01.png|make a shape film
File:|make a color film
File:屏幕快照 2018-03-31 下午1.43.20.png|dry the shape film
File:|dry the color film
File:屏幕快照 2018-03-31 下午1.43.34.png|0.75 uL droplets of the pH solution drop on the shape film
File:屏幕快照 2018-03-31 下午1.43.45.png|pH2 and pH12 shape changing
</gallery>
</gallery>
 
{{#evt:service=vimeo|id=262637645}}
<br/>


===References===
===References===
#[1] Robert Boyle. 1664. Experiments and Considerations Touching Colours. Project Gutenberg. 1–157 pages.
#[1] Robert Boyle. 1664. Experiments and Considerations Touching Colours. Project Gutenberg. 1–157 pages.
#[2] Jian He and M Monica Giusti. 2010. Anthocyanins: Natural Colorants with Health-Promoting Properties.
#[2] Jian He and M Monica Giusti. 2010. Anthocyanins: Natural Colorants with Health-Promoting Properties.
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#[4] Viirj Kan. 2017. Organic Primitives: Synthesis and Design of pH-Reactive Materials using Molecular I/O for Sensing, Actuation, and Interaction. Proceedings of the 2017 CHI Conference on Human Factors in Computing Systems Pages 989-1000.
#[4] Viirj Kan. 2017. Organic Primitives: Synthesis and Design of pH-Reactive Materials using Molecular I/O for Sensing, Actuation, and Interaction. Proceedings of the 2017 CHI Conference on Human Factors in Computing Systems Pages 989-1000.
#[5] UMass Amherst Department of Chemistry Lecture Demonstrations.
#[5] UMass Amherst Department of Chemistry Lecture Demonstrations.
#[6] * https://ellieirons.com/projects/two-meadows/
#[6] https://ellieirons.com/projects/two-meadows/


[[:File:12.6 bio-lab first idea.pdf]]
      [[:File:12.6 bio-lab first idea.pdf]]

Latest revision as of 10:29, 5 April 2018

Object is talking

1. Introduction

1.1 anthocyanin Anthocyanins are water-soluble vacuolar pigments. In the 1664 book Experiments and Considerations Touching Colours by chemist Robert Boyle, various edible plants are reported as visual pH indicators due to pH-responsive mechanisms in their tissues [1]. Anthocyanin is a kind of natural colorant in food and beverage industry, and has been found to possess anti-inflammatory antioxidant properties [2]. It has also been researched for use as an indicator for packaging applications to detect spoilage in pork and fish products [3]. All tissues of vascular plants contain the flavonoid anthocyanin, a pigment that changes colour under varying pH solutions. Under different pH conditions, the hydroxyl (OH) and/or methyl ether (O-CH3) groups attached to the carbon rings (figure 1) undergo reversible structural transformations and ionizations. Restructuring a molecule changes the way it ab- sorbs light, giving rise to colour changes [4].

Screen Shot 2018-01-31 at 12.08.56.png

Chemical diagram of colour-changing anthocyanin pH reaction [5]

1.2 red cabbage "Red cabbage is rich in a number of bioactive substances, including anthocycanins"[Wiczkowski, 2012]. The method of extracting anthocyanin from red cabbage is easy and convenient.

2. Idea

This work is based on a research done by MIT media lab that uses organic fluid-based molecules. The molecules anthocyanin, vanillin, chitosan are used as dopants that can sense different pH values. The output is in the form of a broad spectrum of colors, odors and shapes. Based on this, the experiment focus on color changing, using kappa-carrageenan as substrate to present the reaction in a certain form. The outcome shows chemical reactions that are in daily life unreadable and unseen. What is shown here is a new design language to create new appliances. In the exhibition, color changing can be seen both in liquid and solid statues.

3. Method


References

  1. [1] Robert Boyle. 1664. Experiments and Considerations Touching Colours. Project Gutenberg. 1–157 pages.
  2. [2] Jian He and M Monica Giusti. 2010. Anthocyanins: Natural Colorants with Health-Promoting Properties.
  3. [3] Xiahong Zhang, Sisi Lu, and Xi Chen. 2014. A visual pH sensing film using natural dyes from Bauhinia blakeana Dunn. Sensors and Actuators B: Chemical 198 (2014), 268–273.
  4. [4] Viirj Kan. 2017. Organic Primitives: Synthesis and Design of pH-Reactive Materials using Molecular I/O for Sensing, Actuation, and Interaction. Proceedings of the 2017 CHI Conference on Human Factors in Computing Systems Pages 989-1000.
  5. [5] UMass Amherst Department of Chemistry Lecture Demonstrations.
  6. [6] https://ellieirons.com/projects/two-meadows/
      File:12.6 bio-lab first idea.pdf