Hi,
Does L ascorbic acid can be stable at a temperature below 60°C for 30 min ?
Dear I understand how you feel about this question.
Dear the thermal stability of vitamin C is within the range the temperature range of 30 to 90 °C.
Hello,
Vitamin C is very stable if heated in complete absence of oxygen, even at 100°C. But degradation occurs if heated in the presence of air, aven at mild temperature.
Sincerely
marc Conti
Dear
I think it depends on to the source and matrix of vit C.
Vitamin C or L-AA in vegetables and fruits convert to DHAA enzymatically very faster than heating.
This occurs with AAO reaction.
e.g. L-AA only after 15 min in 30-40C temperature become zero.
It mean completely L-AA convert to DHAA enzymatically.
But vegetables after 15 min at 80-90 C save their L-AA , because the enzyme (AAO) denature at this temperature.
But chemically pure L-AA in the absence of oxygen is stable even around 200C.
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