By Zdzisław E Sikorski
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Additional info for Chemical and functional properties of food components
High-density water is extremely reactive and more liquid, whereas low-density water is inert and more viscous. A continuous spectrum of water structures between these two extremes can be imagined. The strength of water–water hydrogen bonding, which is the source of water density and reactivity, has great functional significance; this explains water’s solvent properties and its role in many biological events. A common feature of all theories is that a definite structure of liquid water is due to the hydrogen bonding between molecules, and that the structure is in the dynamic state as the hydrogen bonds break and reform with high frequency.
In the high-density water, the bent, relatively weak hydrogen bonds predominate over straight, stronger ones. Low-density water has many icelike straight hydrogen bonds. Although hydrogen bonding is still continuous through the liquid, the weakness of the bonds allows the structure to be disrupted by thermal energy extremely rapidly. High-density water is extremely reactive and more liquid, whereas low-density water is inert and more viscous. A continuous spectrum of water structures between these two extremes can be imagined.
Where required by local laws, the precise location of the source of a water defined by origin must appear on the label. ” The standard prohibits any claims for medicinal (preventive, alleviative, or curative) effects. Claims for other health benefits may only appear if true and not misleading. Any place name may not form part of the trade name unless it refers to water defined by origin collected from that place. The chemical and microbiological safeguards placed on bottled water make it a safer alternative to tap water in places where community water supplies may be substandard or compromised by drought or flood.