Food Systems for Food Security On-Farm Supply Issues Hans H. Stein University of Illinois .
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Transcript of Food Systems for Food Security On-Farm Supply Issues Hans H. Stein University of Illinois .
![Page 1: Food Systems for Food Security On-Farm Supply Issues Hans H. Stein University of Illinois .](https://reader036.fdocuments.us/reader036/viewer/2022062720/56649f055503460f94c1a5d1/html5/thumbnails/1.jpg)
Food Systems for Food Security
On-Farm Supply Issues
Hans H. SteinUniversity of Illinois
http://nutrition.ansci.illinois.edu
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Current Research
• Energy and nutrient digestibility in pigs– Amino Acids– Minerals– Lipids– Carbohydrates (starch and fiber)
• Use of pigs as models for humans – Amino acids– Energy and fiber
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Ileal AA Digestibility
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Amino Acid Nutrition in Humans
H. H. Stein
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Human Malnutrition• Marasmus– Energy and protein deficiency
• Kwashiorkior– Deficiency of protein (quality or quantity)
• Goiter– Iodine deficiency
• Anemia– Deficiency of iron, vit. B12, or folic acid
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Kwashiorkor
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Preparation of Casava
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H. H. Stein
Nutritional Value of Casava
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Kwashiorkor
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Protein Requirements
• Is a requirement for indispensable AA• AA are needed for maintenance, growth, and
milk protein synthesis• Greatest requirement (as % of diet) in children,
teenagers, and pregnant and lactating women• No storage of excess AA – needed every day
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Liebig’s Barrel
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AA intake of 8 year old boy
H. H. Stein
100 g rice + 55 g beans
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AA intake of 8 year old boy - 100 g rice + 55 g soy flour
H. H. Stein
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H. H. Stein
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Digestible Indispensable Amino Acids Scores (DIAAS)
H. H. Stein
DIAAS values indicate the first limiting AA in Food Proteins
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First Peer Reviewed Publication
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First Peer Reviewed Publication
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H. H. Stein
Cervantes-Pahm et al., 2014
DIAAS in Cereal Grains (> 3 years)
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H. H. Stein
Unpublished, Univ. IL, 2014
DIAAS in Soy Proteins (> 3 years)
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Current and Future Research
• DIAAS values in 4 dairy proteins and 4 plant proteins (Ongoing)
• Future: DIAAS values in 100 food proteins (in collaboration with 3 other Universities)
• Further refinement of systems for AA evaluation in humans
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H. H. Stein
Acknowledgement
http://nutrition.ansci.illinois.edu