tapioca flour cassava Small pearls, high calorie! Drinking bubble tea has become a new trend among teenagers. However, a research found that the sugar contents and energy levels of bubble tea could be dangerously high. Let’s take a look into this delicious treat and find out how to drink healthier. What is bubble tea? Bubble tea is usually made by mixing tapioca pearls with milk tea. Tapioca is a starch extracted from a plant called cassava (木木). The drink is usually served with a wide Oxford University Press 2019 - 1 - New Mastering Science Related topics: Matter as particles (Unit 6), A healthy body (Unit 12) 0 News file SCIENCE Watch the video: http://eresour ces.oupchina.c om.hk/nmasci/l inks/news14.ht ml
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tapioca flour
cassava
Small pearls, high calorie!
Drinking bubble tea has become a new trend among teenagers. However, a research found that the sugar contents and energy levels of bubble tea could be dangerously high. Let’s take a look into this delicious treat and find out how to drink healthier.
What is bubble tea?
Bubble tea is usually made by mixing tapioca pearls with milk tea. Tapioca is a starch
extracted from a plant called cassava (木薯).
The drink is usually served with a wide straw so that we can suck up the milk tea together with the tapioca pearls sitting at the bottom.
Oxford University Press 2019 - 1 - New Mastering Science
News file
Related topics: Matter as particles (Unit 6), A healthy body (Unit 12)0
SCIENCE
Watch the video: http://eresources.oupchina.com.hk/nmasci/links/news14.html
Watch the video: http://eresources.oupchina.com.hk/nmasci/links/news14.html
Watch the video: http://eresources.oupchina.com.hk/nmasci/links/news14.html
Watch the video: http://eresources.oupchina.com.hk/nmasci/links/news14.html
Watch the video: http://eresources.oupchina.com.hk/nmasci/links/news14.html
Watch the video: http://eresources.oupchina.com.hk/nmasci/links/news14.html
Watch the video: http://eresources.oupchina.com.hk/nmasci/links/news14.html
Watch the video: http://eresources.oupchina.com.hk/nmasci/links/news14.html
tapioca pearls
Iced milk tea
Energy of the ingredients (%)
>40%
<60%
Total energy: 400 kcal
Tapioca pearls are made by tapioca flour, brown sugar and water:
1 In a saucepan, dissolve 40 g of brown sugar in 80 g of water.
2 Boil the solution in step 1. Once it boils, turn off the heat. Add 115 g of tapioca flour into the saucepan. Stir well. Knead the ingredients into small tapioca pearls.
3 Cook the tapioca pearls in a pot of water. They will sink at first.
4 The pearls will gradually float to the top. Take out the pearls and stir them with 35 g of the brown sugar. That’s it!
Bubble tea, a ‘calorie bomb’?
Tapioca pearls is an important source of sugar and energy in bubble tea.
The research found that the average energy level of a cup of bubble tea could reach 400 kcal. This is equal to the energy provided by two regular bowls of rice. The tapioca pearls contributed over 40% (170 kcal) of the total energy.
To reduce the threat of this ‘calorie bomb’, bubble tea lovers are advised to request fewer pearls or choose a smaller serving size of the drink.
Oxford University Press 2019 - 2 - New Mastering Science
tapioca pearl
ice
milk tea
QuestionsS11 The photo below shows a cup of iced bubble tea.
The diagrams below show the particle models of different matters.
I II IIIWhich of the models best describe each of the ingredients of the drink?
Tapioca pearl Milk tea IceA I II IIIB I III IC III II ID III I II
Directions: Questions 2 and 3 refer to step 1 on p.2.2 When brown sugar is added to water, the sugar disappears and the water turns pale brown. Why?
A The water particles are used up and disappear.B The water particles evaporate to form vapour.C The sugar particles mask the water particles.D The sugar particles become evenly distributed among the water particles.
3 When all brown sugar is dissolved in the water, the mass of the solution isA 40 g.B 85 g.
Oxford University Press 2019 - 3 - New Mastering Science
C 120 g. D 155 g.
E4 In terms of gas pressure, explain how we can drink the bubble tea with a straw.(2 marks)
b Complete the table below to show the parts of the digestive system and the corresponding digestive juices that are involved in the digestion of the food substance in a. (5 marks)
Part of the digestive system Digestive juice(s)
c Which part of the digestive system absorbs the water in the bubble tea the most? (1 mark)
Oxford University Press 2019 - 5 - New Mastering Science
7 The daily energy requirement for Betty is 7560 kJ. Assumed that she has 3 meals a day and the amount of energy she takes from each meal is the same. Determine one cup of bubble tea will take up how much percentage of her daily energy requirement from one meal. Show your calculation. (3 marks)
Small intestine Pancreatic juice, intestinal juice
c Small intestine 1 m
7 Percentage of Betty’s daily energy requirement from one meal taken by a whole cup of bubble tea
= 400 × 4.27560 ÷ 3
× 100% 2 m
= 67 % 1 m
Oxford University Press 2019 - 7 - New Mastering Science
8 Obesity / tooth decay / coronary heart disease / diabetes (any two) (Or other correct answers)2 m
Reference websites:
The Consumer Council
Risk of High Sugar Content in Tea-based Beverages – 5 Models Exceeding Maximum Daily Limit of Sugar Intakehttp://eresources.oupchina.com.hk/nmasci/links/news12.html