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B Group vitamins

QuestionAnswer
B Group Vitamins • Thiamine B1 • Riboflavin B2 • Niacin B3 • Pyridoxine B6 • Cobalamin B12 • Folate
Thiamine B1 Properties • Water soluble • Unstable to UV light • Unstable to heat • Destroyed by alkalis • Lost in milling
Thiamine B1 Sources • Fortified breakfast cereals • Eggs • Milk • Meat •Offal
Thiamine B1 Functions 1.Release of energy from carbohydrate & fats 2.Healthy nerves & muscle functioning 3.Normal growth & development
Thiamine B1 Deficiencies • Fatigue/Lack of energy • Affects growth of children • Beri-beri (affects nerves & muscles)
Riboflavin B2 Properties • Water soluble • Unstable to UV light • Unstable to heat • Destroyed by alkalis
Riboflavin B2 Sources • Fortified breakfast cereals • Eggs • Milk • Meat • Offal
Riboflavin B2 Functions 1.Release of energy from protein, carbohydrates & fat 2.Healthy lining of membranes in nose & mouth 3.Healthy skin, hair & nails
Riboflavin B2 Deficiencies • Fatigue/Lack of energy • Slow growth • Sore dry lips & eyes • Dermatitis
Niacin properties • Water soluble • Stable to heat • Stable to acids & alkalis • Lost in milling process
Niacin Sources • Fortified breakfast cereals • Nuts • Meat • Offal • Tuna • Bread
Niacin Functions 1.Release of energy from carbohydrates 2.Healthy nerves 3.Growth & development 4.Healthy skin
Niacin Deficiencies • Fatigue/Lack of energy • Slow growth • Pellagra(causes diarrhoea, dermatitis & dementia)
Pyridoxine Properties • Water soluble • Destroyed by UV Light • Heat stable to 100°C • Destroyed by alkalis • Destroyed by oxygen
Pyridoxine Sources • Fortified breakfast cereals • Nuts • Meat • Offal • Fish • Pulses
Pyridoxine functions 1.Metabolism of proteins, fats & carbohydrates 2.Formation of red blood cells 3.Healthy nervous system
Pyridoxine Deficiencies • Rare • Premenstrual syndrome • Nausea in pregnancy • Insomnia
Cobalamin Properties • Water soluble • Destroyed by UV light • Heat stable to 100oC • Stable to acids & alkalis
Cobalamin Sources • Meat • Fish • Offal • Poultry • Eggs, milk, cheese (NB only found in animal foods)
Cobalamin functions Functions 1.Metabolism of fats & folate 2.Formation of red blood cells 3.Healthy nervous system 4.Healthy growth
CobalaminDeficiencies • Fatigue • Nerves effected • Pernicious anaemia
Cobalamin Reference Intake Children:1ug Adults: 1.4ug Pregnant women: 1.6ug Lactating women: 1.9ug
Folate Properties • Water soluble • Destroyed by UV light • Unstable to heat • Destroyed by alkalis • Destroyed by oxygen
Folate Sources • Fortified breakfast cereals • Bran • Wholemeal bread • Milk • Spinach
Folate functions 1.Prevents neural tube defects 2.Formation of red blood cells 3.Healthy immune system 4.Forms new cells in the foetus
Folate Deficiencies Deficiencies • Fatigue • Neural tube defects e.g. Spina bifida • Anaemia
Folate Reference intake RI Children: 200 ug Adults: 300ug Pregnant women: 500ug
Created by: Caoimhek
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