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

GMU:DIY Biolab “Driver’s License”/Yang Li (view source)

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@@ Line 30: / Line 30: @@
 '''3. Methodology'''
 .1. Making red cabbage indicator
 .2. Making pH solutions
-.3.
+'''17.1.2018'''
+However, there’s a problem which I’m not sure:
+If pH has a direct relationship with health. I read some report and paper, there is a view: alkaline body environment is good for health, but it can not be said alkaline food leads to the alkaline environment/condition,  it is complex medical problem.
+And also, this is a website of Acid/Alkaline Food Chart: http://www.phmiracleliving.com/t-food-chart.aspx
+And I find some healthy medicines which are used to adjust pH, the main ingredients are moderately or highly alkaline food.
+I am confused with it.
+What I will do on 17th:
+. test just for visual and take picture：orange/lemon/onion/green onion/potato...
+. help to know pH level of drinkings
+original pH
+mixed pH （milk/coffee/tea/gouqi/sugar)
+（And is there any pH difference belongs to temperature?  hot and cold ）
+question：
+how to deal with the thing insoluble in water, for instance, oil, cosmetic...
+----
+After the work of 17th, I decided to focus on coffee not kinds of drinks to do the experiment. Because it is hard to judge pH level with one colour measurement.
+I made 3 solutions with different proportions of red cabbage, distilled water and expresso coffee.
+. 5ml red cabbage solution + 1ml distilled water + 1ml coffee
+. 5ml red cabbage solution + 0.5ml distilled water + 1.5ml coffee
+. 5ml red cabbage solution + 1.5ml distilled water + 0.5ml coffee
+As you can see on follow picture, the coulour results are not obvious. The
+[[File:4591516359873_.pic_hd.jpg|400px]]
+'''19.1.2018'''
+I did the experiment of reversibility of colour change.
+ml red cabbage solution + 2ml pH=2 + 2ml pH=9
+[[File:4601516362910_.pic_hd.jpg|400px]]
+ml red cabbage solution + 2ml pH=2 + 2ml pH=11
+[[File:4631516362932_.pic_hd.jpg|400px]]
+ml red cabbage solution + 2ml pH=2 + 2ml pH=13
+[[File:4621516362920_.pic_hd.jpg|400px]]
+ml red cabbage solution + 2ml pH=4 + 2ml pH=9
+[[File:4641516362943_.pic_hd.jpg|400px]]
+And then I use reversibility of colour change to make the colour of coffee more obviously.
+pH of expresso coffee is around 6, I add solution (pH=9) into the original solution 1/2/3, the colour changing is more obviously.
+ [[File:4581516359845_.pic_hd.jpg|400px]]
 '''4. Discussion'''
@@ Line 104: / Line 164: @@
 . Using different pH level solutions react with the organic stuff (which has anthocyanin), see the result
-'''17.1.2018'''
-However, there’s a problem which I’m not sure:
-If pH has a direct relationship with health. I read some report and paper, there is a view: alkaline body environment is good for health, but it can not be said alkaline food leads to the alkaline environment/condition,  it is complex medical problem.
-And also, this is a website of Acid/Alkaline Food Chart: http://www.phmiracleliving.com/t-food-chart.aspx
-And I find some healthy medicines which are used to adjust pH, the main ingredients are moderately or highly alkaline food.
-I am confused with it.
-What I will do on 17th:
-. test just for visual and take picture：orange/lemon/onion/green onion/potato...
-. help to know pH level of drinkings
-original pH
-mixed pH （milk/coffee/tea/gouqi/sugar)
-（And is there any pH difference belongs to temperature?  hot and cold ）
-question：
-how to deal with the thing insoluble in water, for instance, oil, cosmetic...
-----
-After the work of 17th, I decided to focus on coffee not kinds of drinks to do the experiment. Because it is hard to judge pH level with one colour measurement.
-I made 3 solutions with different proportions of red cabbage, distilled water and expresso coffee.
-. 5ml red cabbage solution + 1ml distilled water + 1ml coffee
-. 5ml red cabbage solution + 0.5ml distilled water + 1.5ml coffee
-. 5ml red cabbage solution + 1.5ml distilled water + 0.5ml coffee
-As you can see on follow picture, the coulour results are not obvious. The
-[[File:4591516359873_.pic_hd.jpg|400px]]
-'''19.1.2018'''
-I did the experiment of reversibility of colour change.
-ml red cabbage solution + 2ml pH=2 + 2ml pH=9
-[[File:4601516362910_.pic_hd.jpg|400px]]
-ml red cabbage solution + 2ml pH=2 + 2ml pH=11
-[[File:4631516362932_.pic_hd.jpg|400px]]
-ml red cabbage solution + 2ml pH=2 + 2ml pH=13
-[[File:4621516362920_.pic_hd.jpg|400px]]
-ml red cabbage solution + 2ml pH=4 + 2ml pH=9
-[[File:4641516362943_.pic_hd.jpg|400px]]
-And then I use reversibility of colour change to make the colour of coffee more obviously.
-pH of expresso coffee is around 6, I add solution (pH=9) into the original solution 1/2/3, the colour changing is more obviously.
- [[File:4581516359845_.pic_hd.jpg|400px]]
 However, when I change another kind of coffee and do the experiment in the same way, the colour change cannot be seen obviously. Maybe because the different ingredients of coffee.