AS level Biology Watch

KatMoo19
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Can someone please explain to me the difference between reducing and non-reducing sugars??
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Lexie16
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Reducing sugars have a free OH group and so can be oxidised whilst Non-reducing don’t have a free OH group
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y.u.mad.bro?
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Reducing and non-reducing sugars are found using benedicts test. A reducing sugar (e.g. glucose) is one which can be oxidised and can redcue other substances without you having to hydrolize it. A non-reducing sugar (e.g. sucrose) is one which cannot be oxidised and will not reduce other substances.

If you do a benedicts test on a reducing sugar, it will change from blue to yellow/orange/red. This shows that cooper(II) ions have been reduced. With a non-reducing sugar, you will not get a colour change since there is no functional group present which can be oxidised.
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KatMoo19
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thanks😊 I understand the tests for each if them. What do you mean by reducing other substances??
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y.u.mad.bro?
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(Original post by KatMoo19)
thanks😊 I understand the tests for each if them. What do you mean by reducing other substances??
When we say reducing we mean it loses an electron to another substance so it itself is oxidised.
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