High temperature has effects on vitamin C content of fruits,
blanching in hot water can cause an appreciable loss in
vitamin C that is thermally labile. Ascorbic acid oxidase
needs to be inactivated; this prevents enzyme-catalyzed
reaction during processing. It can be inffered from results
that the lower the temperature, the higher the availability of
vitamin C in fruit juice. It is better to maintain or store
vitamin C in a place below the room temperature
Many chemical reactions contribute to the loss of storage life
of vitamin C and hence the chemical deterioration of fruits.
The majority of these reactions are enzymatically driven
while others are chemical reactions that occur because of the
senescence. This involves colour, flavor, and odour changes
that result from a chemical reaction between the constituents
of the fruits. The biochemical reactions occurring over the
storage period together with microbial action in all the fruit
juices resulted in pH changes. Ascorbic acid is readily
oxidized hence, the use of Metaphosphoric acid and Acetic
acid to suppress metabolic activity upon disruption of the cell
and to precipitate proteins. (Frank, et al., 2004).
This study supports the common perception that fresh is
often best for optimal vitamin C content, as long as the fresh
undergoes minimal storage at room temperature or heated.
Loss of vitamin C with time differs from one fruit to other
under similar storage environments. While boiled samples
cause significant loss of vitamin C in the fruits (Maria,
Encarna and Kader, 2006). For example, handling, storage,
boiling, and oxygen is the most destructive ingredient in juice
should be discouraged from being display in the hot weather
above room temperature in order to maintain production
concentration.
High temperature has effects on vitamin C content of fruits,blanching in hot water can cause an appreciable loss invitamin C that is thermally labile. Ascorbic acid oxidaseneeds to be inactivated; this prevents enzyme-catalyzedreaction during processing. It can be inffered from resultsthat the lower the temperature, the higher the availability ofvitamin C in fruit juice. It is better to maintain or storevitamin C in a place below the room temperatureMany chemical reactions contribute to the loss of storage lifeof vitamin C and hence the chemical deterioration of fruits.The majority of these reactions are enzymatically drivenwhile others are chemical reactions that occur because of thesenescence. This involves colour, flavor, and odour changesthat result from a chemical reaction between the constituentsof the fruits. The biochemical reactions occurring over thestorage period together with microbial action in all the fruitjuices resulted in pH changes. Ascorbic acid is readilyoxidized hence, the use of Metaphosphoric acid and Aceticacid to suppress metabolic activity upon disruption of the celland to precipitate proteins. (Frank, et al., 2004).This study supports the common perception that fresh isoften best for optimal vitamin C content, as long as the freshundergoes minimal storage at room temperature or heated.Loss of vitamin C with time differs from one fruit to otherunder similar storage environments. While boiled samplescause significant loss of vitamin C in the fruits (Maria,Encarna and Kader, 2006). For example, handling, storage,boiling, and oxygen is the most destructive ingredient in juiceshould be discouraged from being display in the hot weatherabove room temperature in order to maintain productionconcentration.
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