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ICAR AIEEA-PG Dairy Analogues, Plant-based Alternatives & Composite Dairy Foods: practice questions

ICAR AIEEA-PG: Dairy Science (group 16) and Dairy Technology (group 17) · India · NTA for ICAR

Original practice questions written to the published syllabus · not past papers
10worked here, free
56written to this exam in this subject
8syllabus units

What this subject covers

Filled and imitation dairy products, plant-based milks and cheeses, hybrid products, and how they compare with dairy in nutrition, function and labelling.

In the exams: ICAR AICE subject 35a Unit 2 (dairy analogues based on plant milk) and Unit 3 (composite dairy foods)

Where the 56 questions fall

How our questions for ICAR AIEEA-PG spread across the units of Dairy Analogues, Plant-based Alternatives & Composite Dairy Foods. Difficulty: 8 easy, 48 medium, 0 hard.

Plant-based milks: soy, oat, almond, rice and pea9
Composite dairy foods: dairy with cereals, fruits and vegetables9
Nutritional comparison and fortification8
Consumer trends and market8
Plant-based yoghurt and cheese analogues7
Filled milk and imitation milk5
Hybrid dairy and plant products5
Precision-fermentation dairy proteins in analogues5

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 · Filled milk and imitation milk · medium

Recombined milk differs from filled milk in that recombined milk:

  1. Contains vegetable fat in place of milk fat to lower its cost
  2. Is always sold as a powder rather than a liquid
  3. Contains only milk constituents
  4. Contains no protein of any kind
Answer and working

C. Contains only milk constituents

Recombined milk is made from milk powder, anhydrous milk fat and water.

Further reading: Tetra Pak Dairy Processing Handbook

2 · Plant-based milks: soy, oat, almond, rice and pea · medium

Soy drink makers prevent beany flavour mainly by:

  1. Grinding beans in ice-cold water to slow all reactions
  2. Adding lactose before grinding
  3. Fermenting the beans for a week
  4. Grinding beans in near-boiling water
Answer and working

D. Grinding beans in near-boiling water

Hot grinding or blanching inactivates lipoxygenase before it can act; cold grinding allows the reaction.

Further reading: Sethi et al. (2016) J Food Sci Technol 53: 3408

3 · Plant-based milks: soy, oat, almond, rice and pea · medium

Enzymes are used in oat drink manufacture mainly to:

  1. Coagulate oat protein into curd for a cheese-like product
  2. Hydrolyse starch, lowering viscosity and adding sweetness
  3. Remove gluten completely
  4. Add lactose to the drink
Answer and working

B. Hydrolyse starch, lowering viscosity and adding sweetness

Amylases convert starch to dextrins, maltose and glucose; otherwise starch gelatinises into a thick paste.

Further reading: McClements and Grossmann, Next-Generation Plant-based Foods

4 · Plant-based milks: soy, oat, almond, rice and pea · medium

Raffinose and stachyose in soy drink can cause flatulence because they are:

  1. Allergens that trigger IgE antibodies in sensitised people
  2. Converted to lactose in the gut
  3. Absorbed and stored as fat
  4. Fermented by bacteria in the colon
Answer and working

D. Fermented by bacteria in the colon

Humans lack α-galactosidase, so these oligosaccharides reach the colon and are fermented to gas.

Further reading: Sethi et al. (2016) J Food Sci Technol 53: 3408

5 · Plant-based yoghurt and cheese analogues · medium

Starch-and-coconut-oil cheese alternatives are typically:

  1. Low in protein and high in saturated fat
  2. Higher in protein than Cheddar-type dairy cheese of similar moisture
  3. Fermented and ripened for months
  4. Made from rennet casein
Answer and working

A. Low in protein and high in saturated fat

Coconut fat is mostly saturated; starch replaces protein as the structuring agent.

Further reading: McClements and Grossmann, Next-Generation Plant-based Foods

6 · Hybrid dairy and plant products · medium

Flavour problems in dairy–legume hybrids are often reduced by:

  1. Adding more raw legume flour
  2. Refined proteins, masking or fermentation
  3. Skipping heat treatment
  4. Using copper equipment
Answer and working

B. Refined proteins, masking or fermentation

Highly refined isolates, flavour masking and fermentation reduce beany and bitter notes.

Further reading: McClements and Grossmann, Next-Generation Plant-based Foods

7 · Precision-fermentation dairy proteins in analogues · medium

Which milk protein was the first made by precision fermentation to reach consumer foods?

  1. κ-Casein
  2. Lactoferrin
  3. αs1-Casein
  4. β-Lactoglobulin
Answer and working

D. β-Lactoglobulin

Recombinant β-lactoglobulin entered ice creams and other foods from about 2020.

Further reading: McClements and Grossmann, Next-Generation Plant-based Foods

8 · Precision-fermentation dairy proteins in analogues · medium

Mycoprotein made from a filamentous fungus is an example of:

  1. Precision fermentation of β-lactoglobulin
  2. Cellular agriculture of mammary cells
  3. Biomass fermentation
  4. Rennet coagulation
Answer and working

C. Biomass fermentation

In biomass fermentation the whole organism is the food; precision fermentation yields a specific molecule.

Further reading: McClements and Grossmann, Next-Generation Plant-based Foods

9 · Nutritional comparison and fortification · easy

Which unfortified plant drink is typically lowest in protein?

  1. Rice
  2. Soy
  3. Pea
  4. Cow milk
Answer and working

A. Rice

Rice drink has about 0.1–0.3 g/100 mL.

Further reading: Sethi et al. (2016) J Food Sci Technol 53: 3408

10 · Consumer trends and market · medium

In East Asia, soy milk is best described as:

  1. A new invention of the 2010s
  2. A long-established traditional drink
  3. A cheese alternative
  4. An infant formula
Answer and working

B. A long-established traditional drink

Soy milk has been made for centuries; it is an everyday drink rather than a recent dairy substitute.

Further reading: Sethi et al. (2016) J Food Sci Technol 53: 3408

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Read the subject

Dairy Analogues, Plant-based Alternatives & Composite Dairy FoodsThe full study manual, free ICAR AIEEA-PGFormat, sections and how it has changed

More ICAR AIEEA-PG practice

Starter Cultures & Lactic Acid BacteriaDairy Pathogens, Toxins & Microbial RiskMicrobiology of Raw & Market MilkChemistry of Dairy ProductsInfant Formula & Nutritional Dairy ProductsLactose, Milk Salts & VitaminsDairy Analysis & Instrumental MethodsMilk Proteins & EnzymesEngineering Fundamentals for Dairy TechnologistsMicrobiology of Dairy ProductsMilk LipidsProbiotics, Prebiotics & Functional Dairy FoodsDairy Colloids: Emulsions, Foams & GelsGeneral MicrobiologyFluid Flow, Thermodynamics & Heat Transfer in Dairy PlantsMilk Composition & Physical PropertiesSensory Evaluation & Judging of Dairy ProductsBiochemistry for Dairy ScienceComputing, Data & Digital Tools for DairyDairy Animal ScienceDairy Plant Design, Layout & Project EngineeringMarket Milk ProcessingHuman Nutrition & Dairy in the DietDairy Industry & Milk Production Systems

Dairy Analogues, Plant-based Alternatives & Composite Dairy Foods for other exams

GATE · IndiaICAR AICE-JRF/SRF · India

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