Less Sodium -- Church & Dwight - September 2017 - 4

how bicarbonates leaven

BAKED
GOODS

How does sodium bicarbonate leaven baked goods?
Sodium bicarbonate releases carbon dioxide gas when reacted
with acid and heat in the presence of water. The bubbles cause
ďĂƩĞƌĂŶĚĚŽƵŐŚƚŽƌŝƐĞ͕ƌĞƐƵůƟŶŐŝŶůŝŐŚƚĞƌďĂŬĞĚŐŽŽĚƐ͘dŚĞ
ƐŽĚŝƵŵŝƐƌĞƚĂŝŶĞĚŝŶƚŚĞďĂŬĞĚŐŽŽĚĂƐĂƐŽĚŝƵŵƐĂůƚ͘
NaX + H20 + CO2
HX + NaHCO3
(acid salt) (sodium bicarbonate) (heat and water) (sodium salt) (water) (carbon dioxide)

How does potassium bicarbonate compare?
Potassium bicarbonate reacts very similarly to sodium bicarďŽŶĂƚĞ͕ƌĞůĞĂƐŝŶŐĐĂƌďŽŶĚŝŽdžŝĚĞŐĂƐŝŶƚŽƚŚĞƐLJƐƚĞŵǁŝƚŚƚŚĞ
ďĂŬĞĚŐŽŽĚƌĞƚĂŝŶŝŶŐƚŚĞƉŽƚĂƐƐŝƵŵ͘WŽƚĂƐƐŝƵŵďŝĐĂƌďŽŶĂƚĞ
ĂůƐŽŚĂƐĂƐŝŵŝůĂƌƉ,ƚŽƐŽĚŝƵŵďŝĐĂƌďŽŶĂƚĞ͕ďƵƚƌĞƋƵŝƌĞƐ
more of the product to react completely with the acid salts.
KX
+ H20 + CO2
HX +
KHCO3
(acid salt) (potassium bicarbonate) (heat and water) (potassium salt) (water) (carbon dioxide)

Is the same true of ammonium bicarbonate?
EŽ͘tŚĞŶĂŵŵŽŶŝƵŵďŝĐĂƌďŽŶĂƚĞďƌĞĂŬƐĚŽǁŶ͕ŝƚƌĞůĞĂƐĞƐ
carbon dioxide and ammonia gases. At ambient temperaƚƵƌĞ͕ĂŵŵŽŶŝƵŵďŝĐĂƌďŽŶĂƚĞǁŝůůĚĞĐŽŵƉŽƐĞƐůŝŐŚƚůLJŝŶĂ
ďĂƚƚĞƌ͘tŝƚŚƚŚĞĂĚĚŝƚŝŽŶŽĨŚĞĂƚ͕ŝƚƌĂƉŝĚůLJďƌĞĂŬƐĚŽǁŶ͕
even without the addition of an acid or a water source.
NH3 + H20 + CO2
NH4CO3

Sodium, Potassium
& Ammonium
Bicarbonate Supply
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ŝƚƐĞůĨŬŶŽǁŶ͘

(ammonium bicarbonate) (heat) (ammonia) (water) (carbon dioxide)

Can ammonium bicarbonate be used in all the same places
as the other two bicarbonates?
EŽ͘ŵŵŽŶŝƵŵďŝĐĂƌďŽŶĂƚĞǁŽƌŬƐďĞƐƚŝŶĐŽŽŬŝĞƐ͕ĐƌĂĐŬĞƌƐ
ĂŶĚůŽǁͲŵŽŝƐƚƵƌĞƉƌŽĚƵĐƚƐ͕ĂƐƚŚĞƐĞƉƌŽĚƵĐƚƐŚĂǀĞĂƉŽƌŽƵƐ
cellular structure that allows gases to escape slowly. The speĐŝĂůůĞĂǀĞŶŝŶŐĂĐƟŽŶŽĨĂŵŵŽŶŝƵŵďŝĐĂƌďŽŶĂƚĞĐŽŶƚƌŝďƵƚĞƐƚŽ
ƐĞǀĞƌĂůĚĞƐŝƌĂďůĞĐŚĂƌĂĐƚĞƌŝƐƟĐƐŝŶƐƵĐŚƐŵĂůů͕ƉŽƌŽƵƐďĂŬĞĚ
ŐŽŽĚƐ͘&ŽƌĞdžĂŵƉůĞ͕ŝŶĐŽŽŬŝĞƐƚŚĞƌĞ͛ƐŝŶĐƌĞĂƐĞĚƐƉƌĞĂĚŽĨƚŚĞ
ďĂƩĞƌ͘/ŶƐŽŵĞĂƉƉůŝĐĂƟŽŶƐ͕ĂŵŵŽŶŝƵŵďŝĐĂƌďŽŶĂƚĞĂƐƐŝƐƚƐ
ǁŝƚŚďƌŽǁŶĐŽůŽƌĚĞǀĞůŽƉŵĞŶƚ͘/ƚŝƐŽŌĞŶƵƐĞĚŝŶĐŽŶũƵŶĐƟŽŶ
ǁŝƚŚĂƐůŽǁĞƌͲĂĐƟŶŐůĞĂǀĞŶŝŶŐĂŐĞŶƚĨŽƌĂƚǁŽͲƐƚĂŐĞƌĞůĞĂƐĞ
ŽĨŐĂƐĞƐ͕ĂƐƚŚŝƐŚĞůƉƐǁŝƚŚƚŚĞĚĞǀĞůŽƉŵĞŶƚŽĨƵŶŝĨŽƌŵŚĞŝŐŚƚ
ĂŶĚƐŚĂƉĞ͘/ŶŚŝŐŚͲŵŽŝƐƚƵƌĞƉƌŽĚƵĐƚƐƐƵĐŚĂƐĐĂŬĞƐĂŶĚŵƵĨĮŶƐ͕ƚŚĞĂŵŵŽŶŝĂŐĂƐĚŽĞƐŶŽƚĞƐĐĂƉĞĐŽŵƉůĞƚĞůLJĂŶĚƚŚĞ
taste and odor of ammonia remains.

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Table of Contents for the Digital Edition of Less Sodium -- Church & Dwight - September 2017

https://www.nxtbook.com/sosland/church/2020_10_01
https://www.nxtbook.com/sosland/church/2019_09_01
https://www.nxtbook.com/sosland/church/2018_09_01
https://www.nxtbook.com/sosland/church/2017_09_01
https://www.nxtbook.com/sosland/church/2016_12_01
https://www.nxtbookmedia.com