common acids Flashcards by Nancy He | Brainscape

Q

CH3COOH

A

ACETIC

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Q

(CH2)4(COOH)2

A

ADIPIC

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Q

C6H8O7

A

CITRIC

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Q

HO2CCH=CHCO2H

A

FUMARIC

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Q

C3H6O3

A

LACTIC

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Q

HO2CCH2CHOHCO2H

A

MALIC

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Q

CH3CH2COOH

A

PROPIONIC

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Q

C6H8O2

A

SORBIC

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Q

C6H5COOH

A

BENZOIC

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Q

HOOC-(CH2)2-COOH

A

SUCCINIC

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Q

C4H4O3

A

SUCCINIC ANHYDRIDE

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Q

C4H6O6

A

TARTARIC

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Q

Clear, colorless liquid, PIQUANT smell, sharp flavor

A

acetic

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Q

used for pickling

A

acetic

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Q

acetic acid is made by:

A

fermenting fruit juice (oxidize acetylaldehyde/butane)

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Q

adipic acid is made by:

A

oxidize cyclohexanol

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Q

adipic is soluble in:

A

ethanol, acetone (NOT water)

Q

replacement for vinegar:

A

citric

Q

most common acid in fruit/veg

A

citric

Q

citric is soluble in:

A

water, ethanol

Q

fumaric is made by:

A

ferment glucose/molasses (use rhizopus)

Q

used as preservative for dry foods

A

fumaric

Q

general purpose use

A

citric, tartaric, succinic

Q

used in dairy goods

A

lactic

Q

pale yellow, viscous liquid (smelly)

A

lactic

Q

lactic is made by

A

ferment sugar

Q

malic is soluble in:

A

water and ethanol

Q

used in canned fruit/veg

A

malic

Q

used in baked goods to stop molding

A

propionic

Q

oily and pungent liquid

A

propionic

Q

propionic soluble in:

A

water and ethanol

Q

POORLY soluble in water:

slightly soluble in water:

A

adipic is poorly soluble

Fumaric, sorbic, benzoic slightly soluble

Q

preservatives:

A

sorbic, benzoic (salts)

Q

benzoic effective for

A

mold/yeast/some bacteria

Q

sorbic effective for

A

mold/yeast/fungi

Q

acidic/bitter taste

A

succinic

Q

only permitted anhydride in food:

A

succinic anhydride

Q

used as leavening agent

A

succinic anhydride

Q

produced in wine fermentation

A

tartaric

Q

inorganic acids used

A

H3PO4, HCl