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Topic: Acidity


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In the News (Tue 18 Jun 19)

  
  Coffee Chemistry and Acidity
The perceived acidity of coffee results from the proton donation of acids to receptors on the human tongue.
Phosphoric acid has been implicated as a major contributor to perceived acidity by Maier and Rivera, but an alternate conclusion has been reached by Griffin and Blauch who suggest that phosphoric acid might contribute, but is not directly correlated to the perceived acidity.
However, due to highly complex buffering effects and the wide distributions of salts and acids present in coffee, it is difficult to predict the exact mechanism and agents responsible for the perceived acidity in coffee.
www.coffeeresearch.org /science/sourmain.htm   (812 words)

  
  NationMaster - Encyclopedia: Acidity
The acidity of milk may change during the lactation period but no definite trend can be stated except that (a) the acidity of colostrum is high, and (b) the milk towards the very end of the lactation period frequently has a lower acidity.
The acidity test must be used with considerable discretion, if used at all, for grading raw milk at the plant intake, because (a) fresh milk varies widely in acidity, and (b) millions of bacteria are required to produce the first rise in acidity.
The acidity of ice cream mixes is higher than the acidity of milk in the same proportion that the serum solids content of the mix is higher than that of milk.
www.nationmaster.com /encyclopedia/Acidity   (1007 words)

  
 What is acid rain? [USGS]   (Site not responding. Last check: )
The extra acidity in rain comes from the reaction of air pollutants, primarily sulfur oxides and nitrogen oxides, with water in the air to form strong acids (like sulfuric and nitric acid).
Acidity in rain is measured by collecting samples of rain and measuring its pH.
This pattern of high acidity is caused by the large number of cities, the dense population, and the concentration of power and industrial plants in the Northeast.
pubs.usgs.gov /gip/acidrain/2.html   (482 words)

  
  Dairy Chemistry   (Site not responding. Last check: )
The acidity of milk may change during the lactation period but no definite trend can be stated except that (a) the acidity of colostrum is high, and (b) the milk towards the very end of the lactation period frequently has a lower acidity.
The acidity test must be used with considerable discretion, if used at all, for grading raw milk at the plant intake, because (a) fresh milk varies widely in acidity, and (b) millions of bacteria are required to produce the first rise in acidity.
The acidity of ice cream mixes is higher than the acidity of milk in the same proportion that the serum solids content of the mix is higher than that of milk.
drinc.ucdavis.edu /dairychem5.htm   (708 words)

  
 Intute sciences - Chemical Sciences: pH is the Measure of Solution Acidity
Therefore the concept of acidity has been defined quantitatively as follows: the acidity of a solution is measured by and is equal to the activity of hydrogen ion in that solution.
Thus the product of acidity and basicity, if basicity is logically defined as the activity of hydroxide ion, is a constant for any aqueous species, so that as the acidity of a solution increases (solution becomes more acidic) the basicity of that solution decreases (solution becomes more basic).
Since acidity and basicity are related through a constant in water (and they are in all other protonic solvents as well; only the numeric value of the constant changes with solvent) we need be concerned with only one of them -- acidity.
www.psigate.ac.uk /newsite/reference/plambeck/chem1/p01142.htm   (628 words)

  
 WebHealthCentre.com - Health Centre - Acidity
Acidity refers to a set of symptoms caused by an imbalance between the acid secreting mechanism of the stomach and proximal intestine and the protective mechanisms that ensure their safety.
Acidity is responsible for symptoms like dyspepsia, heartburn and the formation of ulcers (erosion of the lining of the stomach or intestines).
Acidity tends to have a much higher incidence in highly emotional and nervous individuals.
www.webhealthcentre.com /centers/acidity.asp   (1113 words)

  
 Highbeam Encyclopedia - Search Results for acidity
The measurement of actual acidity in acid sulfate soils and the determination of sulfidic acidity in suspension after peroxide oxidation.
The use of Ca-modified, brown-coal-derived humates and fulvates for treatment of soil acidity.
The influence of surface incorporated lime and gypsiferous by-products on surface and subsurface soil acidity.
www.encyclopedia.com /SearchResults.aspx?Q=acidity&StartAt=1   (841 words)

  
 Acidity Treatment through Natural Cures
There are certain hormones that regulate this flow as per the food eaten.
Acidity is generally caused by an imbalance between mechanisms of the secretion of acid in the stomach, and protective mechanisms that ensure the stomach’s safety.
Acidity may cause other symptoms like dyspepsia, formation of ulcers (erosion of the lining of the intestines or stomach) and heartburn.
www.ayurvediccure.com /acidity.htm   (308 words)

  
 WebForm1
ACIDity provide IT Consultancy and Applications with a strong track record of delivering Mobile and Internet solutions.
Through the use of the Internet and Mobile technologies ACIDity are able to provide Scaleable Applications that are continuously available.
ACIDity can offer a variety of possible solutions to your requirements be they the complete package or elements within an existing system.
www.acidity.co.uk   (80 words)

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