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Why milk is beneficial for the elderly and how they consume it

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Federal Department of Economic Affairs FDEA Agroscope Liebefeld-Posieux Research Station ALP

Why milk is beneficial for the elderly and how they consume it

Doreen Gille

Agroscope Liebefeld-Posieux Research Station ALP Berne, Switzerland

2 nd International FEED for Health Conference

14-15 June 2010, Tromsø, Norway

(2)

Demography: Switzerland 2005

Women Men

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(3)

What milk and dairy products offer:

• = broad composition

• deliver various nutrients

• proteins

• conjugated linoleic acid (CLA)

• short chain fatty acids

• vitamin A, B12, B2, D

• calcium

• milk as raw material for numerous

processed foods

(4)

Impact of milk and dairy products on health

1) Sarcopenia

- excessive decomposition of proteins during aging

- branched chain amino acids from whey proteins used for protein synthesis Æ muscle synthesis

2) Osteoporosis

- positive effect of Ca & vit. D from milk

- lactose and phosphopeptides improve Ca-absorption

- whey proteins with positive impact

(5)

3) Immune system (IS) Æ „Inflammaging“

- whey proteins high in amino acid cystein - cystein as component of glutathione

Æ strengthening of IS Æ protection against oxidative stress - nutrigenomics study at ALP with milk and yoghurt

Impact of milk and dairy products on

health

(6)

Impact of milk and yoghurt on human

gene expression

(7)

Impact of milk and yoghurt on human gene expression

Total RNA

(8)

Impact of milk and yoghurt on human

gene expression

(9)

Survey about the consumption of milk and dairy products of people

50 years and older

ALP Consumer questionnaire

(10)

participants: 253

sexes: 54% ♀ 46% ♂

occupation: 50.6% working 38.7% retired

age: < 50 1.2%

50-59 47%

60-69 36%

70-79 14.6%

80 > 1.2%

Consumer questionnaire: data

(11)

Food purchase (N=253)

Where do you usually buy food

(at least every other week)?

(12)

Food purchase (N=253)

What is important for you when you buy food?

(13)

Snacks (N=222)

Which kind of snacks do you prefer?

(14)

Milk and dairy products (N=253)

How often do you consume milk and dairy products?

Æ 3 per day or more 8.7%

Æ 1-2 per day 71.1%

Æ several times per week 19.4%

Æ less than once a week 1.6%

Recommendations of food-

pyramid: 3 portions/day

(15)

Snacks (N=222)

How many times do you consume following dairy

products as snacks?

(16)

Taste

• 31.6% deem the flavoured yoghurt regarding to its sweetness as convenient and 51.3% as too sweet

(N=253)

Æ Consumer degustation

(17)

Outlook

• our aim: concentrating on nutrition of the elderly in combination with milk and dairy products

• basic research:

* metabolism & -omics technology & classical analytics

* changing of the sensory perception: taste and aroma

• applied research

* products for the elderly

(18)

Thank your for your

attention

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