Exam (elaborations)
FSC 211 Final Exam - Questions And Accurate Solutions
- Course
- Institution
FSC 211 Final Exam - Questions And Accurate Solutions
[Show more]
Seller
Follow
LeCrae
Reviews received
Content preview
FSC 211 Final Exam - Questions And Accurate SolutionsPurpose of cold preservation ✔️Ans - extends shelf life by slowing
enzymatic and chemical reactions
- year round availability of products
Refrigeration ✔️Ans - - few adverse effects on food quality
- "chill injury" if temp is too low
- controlled temp, avoid fluctuations, stay in safe temperature zone
- 35-40 deg
- fruits and vegetables
Hydro-Cooling with cold water ✔️Ans - - fruits and veggies
- removes field heat
- reduces respiration rate (biological reaction)
Direct Contact Icing ✔️Ans - Long distance shipping
Freezing ✔️Ans - very low temperature
- rxns proceed very slowly
- microbes don't grow but are NOT destroyed
- water activity dec as water freezes
stages of freezing ✔️Ans - 1. chilling stage of food
2. zone of maximum Ice formation
- liquid water turns to ice
3. cooling stage of ice
- reducing temp of frozen product to storage temp 0F
Freezing Quality Note: Ice Crystal Formation ✔️Ans - - crystal growth
occurs at temps close to freezing point
- slow freezing encourages formation of larger crystals
- rapid freezing keeps crystals smaller
Frozen foods Methods ✔️Ans - 1. Air
- most common
- blast high velocity cold air
2. indirect (plate)
, - good for regular/flat shaped items
3. immersion
- very rapid, less damage to quality
- more expensive
- ex: cryofreezing
Air Blast Freezing (tunnel) ✔️Ans - - most common method
- Efficient heat removal—product pieces and packaged products
- Continuous in-line-belt freezer
- applications: vegetable pieces, poultry pieces, seas food, prepared foods
in trays
Fluidized bed freezing ✔️Ans - - particulate foods are rapidly frozen prior
to packaging by specialized air blasting
- Individually Quick Frozen (IQF)
- floats the pieces
- applications: peas
plate freezing ✔️Ans - - indirect method
- plates pressed into direct contact with the package/product to aid in
rapid heat removal
- rapid system for freezing packaged blocks
- applications: meat patties, boxed veggies
Cyrogenic Freezing ✔️Ans - - application of low boiling point refrigerants
to product or pkg
- removal of heat as refrigerant undergoes a change in state from liquid to
vapor phase
- extremely rapid freezing helps preserve texture
- liquid nitrogen -320F
- liquid CO2 -110F
Immersion / Cryo Freezing ✔️Ans - - used to individually freeze items
such as shrimp, berries, mushrooms, other "high ticket" items
- for of IQF
maintaining quality related to freezing ✔️Ans - - control micro-organisms
prior to freezing
- control enzymatic activity during storage
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller LeCrae. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
82215 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now
Recently viewed by you
