other effects on temp Flashcards
(17 cards)
What happens to energy and movement in the mash as temperature increases?
Energy and movement increase, potentially breaking down some materials
How does increasing temperature affect the dissolution of substances into water?
It increases the rate at which substances dissolve
What unwanted compounds can dissolve in wort at high temperatures?
- Polyphenols
- Pentosans
- β-glucans
What is a consequence of boiling mash during decoction mashing?
Colour and flavour formation occurs
What is the relationship between mash temperature and lipids?
Higher temperatures favor lipid dissolution but denature the enzyme LOX
What is the effect of minimizing heat exposure on wort?
It helps keep beer tasting fresher for longer
What happens to wort viscosity as temperature rises?
Wort viscosity falls
What is the term used for the temperature of the water used to mash in?
Strike temperature
What is slaking heat?
Heat produced during the hydration of the grist
What is necessary to consider when determining the strike temperature?
The probable reduction in temperature caused by the grist
What equation is used to estimate the start temperature of the mash?
Mash temperature = [(T_w × M_w) + (T_G × M_G)] / M_m + H_S
What factors are not included in the rough estimate of mash temperature?
- Ambient heat losses
- Losses or gains from the mashing vessel
What methods can be used to increase temperature in the mashing vessel?
- Heating via external jackets filled with steam
- Adding steam
- Adding hot water
What is a common problem with temperature measurement in mash?
Clumps of hydrated grist can stick to the sensing probe
Why is the time allocated to mashing important?
It affects the extent of dissolution and hydrolysis processes
What is the most important time consideration in mashing?
The amount of time allocated to mashing in the brewhouse cycle
Fill in the blank: The process of brewing, including mashing, is often described as a process of _______.
compromise
