high protein cultured milk products - oregon dairy industries

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Capturing Consumer Interest in Health and Wellness High Protein Cultured Milk Products Phillip S. Tong, Professor Dairy Products Technology Center California Polytechnic State University San Luis Obispo ([email protected]) April 8, 2014, Salem, Oregon . . .

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Page 1: High Protein Cultured Milk Products - Oregon Dairy Industries

Capturing Consumer Interest in Health and Wellness

High Protein Cultured Milk Products

Phillip S. Tong, ProfessorDairy Products Technology CenterCalifornia Polytechnic State UniversitySan Luis Obispo ([email protected])

April 8, 2014, Salem, Oregon . . .

Page 2: High Protein Cultured Milk Products - Oregon Dairy Industries

What do consumers want?

McCarthy, D., Dairy Management, Inc., 2014

Page 3: High Protein Cultured Milk Products - Oregon Dairy Industries

How will population change?  By 2020?33%

45% Increase

McCarthy, D., Dairy Management, Inc., 2014

Page 4: High Protein Cultured Milk Products - Oregon Dairy Industries

What will consumers be looking for?

McCarthy, D., Dairy Management, Inc., 2014

Page 5: High Protein Cultured Milk Products - Oregon Dairy Industries

Health and Wellness Trends

More Protein

Less fat

Sugar free

Fewer calories

Optimal performance

Fortified ingredients 

Nutrients in Dairy Foods & Ingredients

More, Less, Free, Optimal . . .

Page 6: High Protein Cultured Milk Products - Oregon Dairy Industries

Consumers think protein is part of 

answer

McCarthy, D., Dairy Management, Inc., 2014

Page 7: High Protein Cultured Milk Products - Oregon Dairy Industries

Protein and Wellness

McCarthy, D., Dairy Management, Inc., 2014

Page 8: High Protein Cultured Milk Products - Oregon Dairy Industries

Consumer education needed

McCarthy, D., Dairy Management, Inc., 2014

Page 9: High Protein Cultured Milk Products - Oregon Dairy Industries
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Fermented (Cultured) Milks

Yogurt (Turkey) Labneh (Lebanon)  Kumiss (Asia) Kefir (Czech Republic) Skyr (Iceland) Lassi (India) Doogh (Iran) Ymer (Denmark) Calpis (Japan)

Page 11: High Protein Cultured Milk Products - Oregon Dairy Industries

History of Fermented milk Possible origin in the Middle East, Turkey or Iran (5,000 BC)

Praised for its healthful benefits (500 BC)

1900: Dr. Ilya Metchnikoff isolated bacillus cultures for 

making yogurt

1925: First modern yogurt plant

1970s: increasing popularity in U.S.

Page 12: High Protein Cultured Milk Products - Oregon Dairy Industries

Lactase Persistence & Fermented Milks

http://www.nature.com/news/archaeology‐the‐

milk‐revolution‐1.13471

Page 13: High Protein Cultured Milk Products - Oregon Dairy Industries

What is Greek Yogurt?• Legally ‐

No Legal Definition for “Greek”

Yogurt• Market/Trade   

• Generally 1.5 – 2.5X protein content of conventional• Regular:  8‐9 gms per 8 oz  • “Greek”:  ~15‐20 gms per 8 oz 

• ~ 50% Lower lactose level in final product• Shorter ingredient list• Sensory

• Viscous . . . pasty• Smooth . . . . Chalky texture 

Page 14: High Protein Cultured Milk Products - Oregon Dairy Industries

What is Greek Yogurt?

• Health halo of yogurt (good for you)• Gut health, dairy wholesomeness

• Simplicity• Convenient (availability, portability,  shelf life)• Tastes good• PROTEIN !!!

Page 15: High Protein Cultured Milk Products - Oregon Dairy Industries

Manufacture of “higher protein”

yogurt• Concentrated (“strained”) post fermentation to increase 

protein while reducing water, lactose and minerals• Bags• Mechanical separator• Membrane filtration

• Concentrated protein prior to fermentation (no  acid whey)• Formulation with WPC/MPC/NFDM

• no post fermentation concentration• Ultrafiltration of milk 

Page 16: High Protein Cultured Milk Products - Oregon Dairy Industries

Higher protein cultured milks ‐

Considerations

• Concentration (straining) post fermentation• Acid whey handling/usage• Micro‐nutrient loss (minerals – Na, Ca) in whey drainage• Loss of probiotics• Fat level limitations (heavy vs. light phase?)

• Concentration/Formulation pre‐fermentation• Buffering capacity of high solids• Fermentation time• Total acidity to final pH (taste?)• No acid whey, less/no micro‐nutrient loss• Texture control (chalkiness)

Page 17: High Protein Cultured Milk Products - Oregon Dairy Industries

Manufacture of High Protein Yogurt

Mechanical Straining (centrifugal)

1.

Fermentation Tank     2.  Heat Exchanger    3.  Filter System   

4.  Separator     5.  Plate Cooler   6.  Intermediate Tank    7.  Cream tank     8.  Mixer    9.  Packaging Line

Page 18: High Protein Cultured Milk Products - Oregon Dairy Industries

Ultrafiltration  Pre or Post‐

fermentation options

Page 19: High Protein Cultured Milk Products - Oregon Dairy Industries

10% SNF•3.5% Protein

20% SNF•7.0% Protein

Effect of SNF Level on Yogurt Structure

Page 20: High Protein Cultured Milk Products - Oregon Dairy Industries

Proliferation of High Protein 

(“Greek”) Yogurt

Page 21: High Protein Cultured Milk Products - Oregon Dairy Industries

Rapid growth of Greek (high protein) Yogurt

Source:  AC Nielsen

Page 22: High Protein Cultured Milk Products - Oregon Dairy Industries

Source:  , L. Stratura, Dairy Management, Inc.

Page 23: High Protein Cultured Milk Products - Oregon Dairy Industries
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Page 26: High Protein Cultured Milk Products - Oregon Dairy Industries

Cottage CheeseDaisy Low Fat Cottage CheeseBecause it has just 90 calories and 13 grams of protein per 1/2-cup serving, you can enjoy low-fat, 100% natural cottage cheese without giving up the creamy, delicious taste.

Page 27: High Protein Cultured Milk Products - Oregon Dairy Industries

Interests in High Protein

Page 28: High Protein Cultured Milk Products - Oregon Dairy Industries

Future Cultured Milks?    Health and Wellness . 

. .

Page 29: High Protein Cultured Milk Products - Oregon Dairy Industries
Page 30: High Protein Cultured Milk Products - Oregon Dairy Industries

http://www.usdairy.com/Insights/Pages/futureofdairy.aspx

Page 31: High Protein Cultured Milk Products - Oregon Dairy Industries

Future Cultured Milks?    Dairy Technology . 

. .• Processing

• High pressure homogenization (7,000 –

10,000 PSI)• Ingredients

• Micellar casein concentrates (native caseins)• Modified (reformed) casein micelles (minerals)• Casein/Whey protein blends• Increased functional proteins for simple (clean) labels• Lactose free• Milkfat technology?

• Emulsification technology with milk proteins

Page 32: High Protein Cultured Milk Products - Oregon Dairy Industries

Homogenization and product firmness (10% 

fat)

Kessler, 1998, 

IDF Bulletin 9802:  93‐105.

Homogenization (2900 psi @158F)   Firmness (N)   Drained whey (ml)Before Heating

0.50

4.5After Heating

1.10

2.5

Page 33: High Protein Cultured Milk Products - Oregon Dairy Industries

Future Cultured Milks?  Dairy Technology . . 

.• Products

• Fat content (from skim to > whole milk?)   • Drinkable, spoonable, spreadable, sliceable

• Formulated vs. Separation Processes • Pre‐

vs. Post Fermentation• Protein focus over process ?

• Sensory Quality• Yield• Acid Whey• Culture survival (total count?)• Flexibility to handle wider range of fat content?

Page 34: High Protein Cultured Milk Products - Oregon Dairy Industries

Capturing Consumer Interest in Health and Wellness

High Protein Cultured Milk Products

April 8, 2014, Salem Oregon . . .

THANKS FOR YOUR ATTENTIONQUESTIONS?