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ICAR AICE-JRF/SRF Meat, Poultry & Egg Products Technology: practice questions

ICAR AICE-JRF/SRF (PhD) — Food Processing Technology, Food Safety & Quality, Processing and Food Engineering · India · ICAR through the National Testing Agency

Original practice questions written to the published syllabus · not past papers
10worked here, free
84written to this exam in this subject
12syllabus units

What this subject covers

Processed meat, poultry and egg products: meat as a raw material, curing and smoking chemistry, emulsion and restructured products, canned and dried meats, poultry further processing, and egg quality and egg products. Slaughter, inspection and abattoir design are in the Veterinary track (meat-science-abattoir, milk-meat-hygiene-food-safety).

In the exams: GATE XE-G Section 1 (post-mortem changes) and Section 3 (canning, drying and freezing of meat; egg powder); ICAR AIEEA-PG Code 18 Unit III; ICAR AICE 35.a Unit 3

What ICAR AICE-JRF/SRF asks from it

ICAR AICE-JRF/SRF (PhD) — Food Processing Technology, Food Safety & Quality, Processing and Food Engineering

35.a Unit 3 names meat, poultry and egg processing. Expect deeper questions on the molecular basis of rigor, tenderness and WHC, PSE genetics, nitrosamine chemistry and nitrite alternatives, meat batter stability, cold-set binding, PAH control in smoking, MSM oxidation, egg protein functionality and pasteurisation trade-offs.

Where the 84 questions fall

How our questions for ICAR AICE-JRF/SRF spread across the units of Meat, Poultry & Egg Products Technology. Difficulty: 13 easy, 49 medium, 22 hard.

Curing chemistry: nitrite, colour and safety9
Comminuted and emulsion products: sausages9
Smoking of meat and fish8
Structure and composition of muscle7
Meat quality: colour, water-holding capacity, PSE and DFD7
Meat tenderisation: mechanical and enzymatic7
Restructured and formed meat products7
Egg preservation and egg products: liquid, frozen and dried egg7
Conversion of muscle to meat: rigor mortis, pH fall and ageing6
Poultry further processing6
Egg structure, composition and quality measurement6
Canning, drying and freezing of meat5

10 practice questions, worked

Choose an answer, then open the working. Each explanation says why the right answer is right and why the others are not.

1 · Meat tenderisation: mechanical and enzymatic · medium

Blade-tenderised steaks carry more food safety risk than intact steaks when cooked rare because blades

  1. Raise the pH of the whole steak
  2. Destroy the nitrite in the meat
  3. Carry surface bacteria inward
  4. Add moisture that dilutes salt
Answer and working

C. Carry surface bacteria inward

Pathogens normally on the surface are pushed inside, where rare cooking does not reach lethal temperatures; several countries require labelling. The other effects do not occur or are not the reason.

Further reading: Aberle et al., Principles of Meat Science

2 · Curing chemistry: nitrite, colour and safety · hard

100 kg of pork is injected to 110 kg with a brine containing 20% salt. The salt content of the injected meat, before cooking, is

  1. 2.00%
  2. 1.82%
  3. 20.0%
  4. 2.20%
Answer and working

B. 1.82%

Brine taken up = 10 kg, carrying 10 × 0.20 = 2 kg salt; salt % = 2 ÷ 110 × 100 = 1.82%. 2.00% divides by the raw 100 kg; 20% is the brine strength; 2.20% uses 110 × 0.02.

Further reading: Feiner, Meat Products Handbook

3 · Curing chemistry: nitrite, colour and safety · medium

Cooked ham shows grey-brown patches inside slices while the rest is pink. The most likely cause is

  1. Excess sugar in the brine
  2. Using pork from young pigs
  3. Uneven distribution of the cure
  4. Over-chilling after cooking
Answer and working

C. Uneven distribution of the cure

Areas the cure did not reach have no nitric oxide pigment and cook grey-brown like fresh pork; better injection and tumbling distribute cure evenly. Sugar, animal age and chilling do not cause patchy cure colour.

Further reading: Feiner, Meat Products Handbook

4 · Comminuted and emulsion products: sausages · medium

Under the Feder approach, a frankfurter containing 55% moisture and 12.5% protein has added water of

  1. 42.5%
  2. 4.4%
  3. 5%
  4. 50%
Answer and working

C. 5%

Added water = moisture − 4 × protein = 55 − 50 = 5%. 42.5% subtracts protein from moisture; 4.4% divides moisture by protein; 50% is the water expected from the protein.

Further reading: Feiner, Meat Products Handbook

5 · Comminuted and emulsion products: sausages · medium

Phosphates are added to sausage batters mainly to

  1. Add flavour and replace spices
  2. Raise pH, extract protein
  3. Prevent the growth of all bacteria
  4. Lower the pH towards 5.0
Answer and working

B. Raise pH, extract protein

Alkaline phosphates raise pH and ionic strength and dissociate actomyosin, improving protein extraction, water holding and yield. They are not flavourings or general preservatives, and they raise rather than lower pH.

Further reading: Feiner, Meat Products Handbook

6 · Canning, drying and freezing of meat · medium

Some large canned hams carry a 'keep refrigerated' label because

  1. Their cans corrode at room temperature
  2. Their nitrite is destroyed at room temperature
  3. They contain raw, uncooked pork
  4. Their mild heat process relies on cold storage
Answer and working

D. Their mild heat process relies on cold storage

To protect quality in large containers, these hams receive a pasteurisation-level process and are not commercially sterile, so refrigeration is part of their safety. They are cooked, and corrosion or nitrite loss is not the reason.

Further reading: Aberle et al., Principles of Meat Science

7 · Poultry further processing · medium

Woody breast and white striping are

  1. Bacterial infections of the skin
  2. Myopathies of fast-growing broilers
  3. Defects caused by scalding too hot
  4. Signs of feed contamination with mycotoxin
Answer and working

B. Myopathies of fast-growing broilers

These are muscle disorders associated with rapid growth and large breast size in modern broilers; they reduce texture, marinade uptake and yield. They are not infections, scald defects or mycotoxin effects.

Further reading: Mead (ed.), Poultry Meat Processing and Quality

8 · Egg structure, composition and quality measurement · easy

The main protein of egg white is

  1. Ovalbumin
  2. Ovomucin
  3. Lysozyme
  4. Phosvitin
Answer and working

A. Ovalbumin

Ovalbumin makes up the largest share of albumen protein. Ovomucin gives thick-white structure, lysozyme is antibacterial and minor, and phosvitin is a yolk protein.

Further reading: Stadelman and Cotterill (eds.), Egg Science and Technology

9 · Egg structure, composition and quality measurement · hard

The thinning of thick albumen during storage is associated mainly with

  1. Changes in the ovomucin gel structure
  2. Conversion of ovalbumin to S-ovalbumin
  3. Denaturation of lysozyme by light
  4. Absorption of fat from the yolk
Answer and working

A. Changes in the ovomucin gel structure

Ovomucin forms the gel network of thick albumen; as pH rises it interacts differently with lysozyme and the network breaks down, thinning the white. S-ovalbumin formation is a separate storage change, and lysozyme denaturation and fat uptake are not the cause.

Further reading: Stadelman and Cotterill (eds.), Egg Science and Technology

10 · Egg preservation and egg products: liquid, frozen and dried egg · medium

Where shell eggs are washed, the wash water is kept warmer than the eggs because

  1. Warm water removes the cuticle completely
  2. Cold water raises the albumen pH
  3. Cold water could be drawn in
  4. Warm water stops eggs cracking in transit
Answer and working

C. Cold water could be drawn in

If the egg contents contract on contact with cooler water, water and bacteria can be drawn through the pores. The purpose is not cuticle removal, pH control or crack prevention.

Further reading: Stadelman and Cotterill (eds.), Egg Science and Technology

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Read the subject

Meat, Poultry & Egg Products TechnologyThe full study manual, free ICAR AICE-JRF/SRFFormat, sections and how it has changed

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