The science of nutrition and healthy eating
The science of nutrition and healthy eating

This free course is available to start right now. Review the full course description and key learning outcomes and create an account and enrol if you want a free statement of participation.

Free course

The science of nutrition and healthy eating

2.6 Enzymes in washing powder

If you use a biological washing product for your clothes, you are using enzymes to help to digest any food (and other) stains on the clothes (Figure 7). The product may contain one, two or all three of the types of enzyme (proteases, lipases and amylases).

Described image
Figure 7 Preparing to wash clothes with a biological washing powder

Activity 3 How does a biological washing powder work?

Allow approximately 15 minutes.

Answer the following questions.

  1. What sort of food stains are likely to be removed by a biological washing powder?
  2. Why do you think the powder works best at low temperatures of around 40 °C and does not work well in boiling water?
  3. Why should you not use this washing powder on clothes made of silk? (Hint: think about what silk is and how it is made.)

Write your answers in the box below. Click ‘Save’ when you are satisfied with what you have written.

You can type text here, but this facility requires a free OU account. Sign in or register.
Interactive feature not available in single page view (see it in standard view).
SNHE_1

Take your learning further

Making the decision to study can be a big step, which is why you'll want a trusted University. The Open University has 50 years’ experience delivering flexible learning and 170,000 students are studying with us right now. Take a look at all Open University courses.

If you are new to university level study, find out more about the types of qualifications we offer, including our entry level Access courses and Certificates.

Not ready for University study then browse over 900 free courses on OpenLearn and sign up to our newsletter to hear about new free courses as they are released.

Every year, thousands of students decide to study with The Open University. With over 120 qualifications, we’ve got the right course for you.

Request an Open University prospectus