«METAPHOSPHORIC ACID»に関連する英語の本
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1
Handbook of Chemistry: Theoretical, Practical, and Technical
Theoretical, Practical, and Technical Sir Frederick Augustus Abel, Charles
Loudon Bloxam. The last-named chemist has come to the conclusion that there
exist five polymeric modifications of metaphosphoric acid, which he distinguishes
as ...
Sir Frederick Augustus Abel, Charles Loudon Bloxam, 1854
2
Vitamins In Foods: Analysis, Bioavailability, and Stability
17.9 Vitamin C An effective means of extracting vitamin C from foods is
homogenization with a solution of 3% (w/v) metaphosphoric acid dissolved in 8%
glacial acetic acid [70]. This extracting solution denatures and precipitates
proteins ...
3
Vitamin Analysis for the Health and Food Sciences, Second ...
It is effective for copper chelation in metaphosphoric acid and trichloroacetic acid,
but ineffective for oxalic acid chelation. All extraction procedures should be
completed rapidly in subdued light to limit light- catalyzed oxidative reactions.
Ronald R. Eitenmiller, W. O. Landen, Jr, Lin Ye, 2007
4
Food Analysis Laboratory Manual
Dilute to volume immediately before use with the metaphosphoric acid – acetic
acid solution (see below for preparation of this solution). Indophenol solution –
dye ○○ To 50 ml deionized distilled (dd) water in a 150-ml beaker, add and stir
to ...
5
The Encyclopaedia Britannica: a dictionary of arts, ...
Metaphosphoric acid in the solid state, aa obtained by evaporating its solution
and beating the residue to redness, is a colourless, glassy, uncrystalluable mass,
which dissolves slowly though somewhat abundantly in water, forming a strongly
...
Thomas Spencer Baynes, 1833
6
Analyzing Food for Nutrition Labeling and Hazardous Contaminants
Extraction solutions proven to limit L-ascorbic acid destruction to less than 5%
include metaphosphoric acid (3-6%) sometimes containing acetic acid and
sulfuric acid or 0.005 M ethylenediaminetetraacetic acid (EDTA) (10).
Metaphosphoric ...
7
The Physical Chemistry of the Proteins
with gelatin to form an insoluble compound (34), 100 parts of gelatin uniting,
according to this observer, with 3.6 parts of metaphosphoric acid. Graham
suggested that the difference between the behavior of metaphosphoric and other
...
8
Lab Manual in Biochemistry: Immunology and Biotechnology
Extracts containing vitamin C are thus prepared in metaphosphoric acid or glacial
acetic acid, which inactivates the enzyme ascorbic acid oxidase naturally present
in food stuffs, hence preventing the atmospheric oxidation of ascorbic acid.
9
Course In Chemistry Iit Jee 2011
On heating, this acid decomposes to give phosphorous acid and metaphosphoric
acid. H4P206 -> H3PO3 + HPO3 It is tetrabasic acid with no reducing
characteristics. In warm water, it undergoes hydrolysis. H4P206 -^-^ H3PO3 +
H3P04 ...
10
Course In Chem For Iit-Jee 2010
2H3P04 520 K * H4P207 870 K » 2HP03 orthophosphoric Pyrophosphoric
metaphosphoric acid acid acid Pyrophosphoric Acid (H4P207) Heating of
orthophosphoric acid to 523-533 K produces this acid. It may also be obtained by
heating an ...
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Sample Preparation for HPLC Analysis of Confectionery
The ground candy is dissolved in water; the vitamin C is stabilised with the help of metaphosphoric acid; after membrane filtration the sample ... «Labmate Online, 2月 15»
