Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Nutritive value of fruits and vegetables Nutrients Substances obtained from food that provide nourishment Micronutrients Macronutrients Energy producing Protective Carbohydrates, fats, proteins Vitamins, minerals
Major nutrients in foods Nutritive value of fruits and vegetables • Water • Carbohydrates • Proteins • Fats • Vitamins • Minerals • Bioactive compounds
Substrate of biological reactions or acts as the matrix or vehicle in which these reactions take place Regulates the temperature and pH in the human body Maintains cell and tissue integrity Water Nutritive value of fruits and vegetables
After water, carbohydrates are the main components of fruits and vegetables and represent more than 90 % of their dry matter Classified into three groups Monosaccharides (glucose, fructose, arabinose, xylose) Oligosaccharides (sucrose, maltose, raffinose, stachyose) Polysaccharides (starch, cellulose, hemicellulose) RDA for carbohydrates is 130 g/ day, except in cases of pregnancy (175 g/day) and lactation (210 g/day) Carbohydrates Nutritive value of fruits and vegetables
Necessary for building and repairing of body tissues Act as transport nutrients Act as enzymes and hormones Supply 4Kcal/ g energy Help in recovering from infections and diseases (strenghten immune system) RDA for protein is 34-56 g/ day, depending upon age and sex During pregnancy and lactation it is 71 g/ day Functions of proteins Nutritive value of fruits and vegetables
Supply energy 9 Kcal/g Essential for absorption of fat soluble vitamins such as vitamin A, D, E, K Functions of fats Nutritive value of fruits and vegetables
Vitamins Nutritive value of fruits and vegetables Fat soluble vitamins: Vitamin A, D, E, K Water soluble vitamins: Vitamin B complex, C Cont….
Nutritive value of fruits and vegetables • Important Minerals • Calcium • Phosphorus • Iron • Sodium • Potassium • Magnesium • Zinc • Copper
Major Phytochemicals Nutritive value of fruits and vegetables Bioactive Compounds or Phytochemicals These are substances present in foods at low levels that may have a role in health maintenance in humans Have antioxidant properties Carotenoids: Lycopene, Lutein, Zeaxanthin, -carotene Polyphenolics: Flavonoids, Flavones, Anthocyanine Glucosinolate: Sulphoraphane, Indole-3-Carbinol Thiosulphides: Alliin, Methiin, Ethiin Dietary fiber: Lignin, Pectin, Cellulose, Dietary fiber Miscellaneous : Selenium, Phytosterol & stanol, Saponins
Nutritive value of fruits and vegetables Nutritional value of raw potato (with peel) per 100 g (Source: USDA National Nutrient Database)
Health benefits of potato Nutritive value of fruits and vegetables • Potato is a wholesome food and a person won't be hungry at all, for some hours, after eating potatoes. It contains carbohydrate, which is a good source of energy. They facilitate easy digestion. So, if you are suffering from diarrhea, eating potato is best! • The energy produced through potato gets stored as glycogen in muscle and liver and functions as a readily available energy during prolonged, strenuous exercise. That’s why; it is an important part of players’ diet.
Health benefits of potato Nutritive value of fruits and vegetables • Potatoes are rich source of vitamin C, vitamin B6, copper, manganese, and dietary fiber. • Potatoes help to improve resistance to heart attack and stroke. The potassium content, available in potatoes, helps in maintaining fluid and electrolyte balance in the body cells. • Raises the glucose level in the blood and over intake may cause obesity, hence it is not recommended for obese or diabetic people.
Nutritive value of raw mango (per 100g) Nutritive value of fruits and vegetables (Source: USDA National Nutrient Database)
Health benefits of mango Nutritive value of fruits and vegetables • Many Indians consider the mango to be a blood builder, and good for anaemia due to its high iron content. • It is also said to be good for alleviating menstrual and muscular cramps. The fruit has a high potassium and magnesium content.
Health benefits of mango Nutritive value of fruits and vegetables • Its papain-like enzyme is good for digestion and purifies the intestines. Mango juice has also been proven to kill certain viruses. It also has good fibre, beta-carotene, vitamins C, B1, B2, B3, B6, zinc and calcium. • The fruit is also effective in cooking as a meat tenderiser and flavour enhancer.
Nutritive value of fruits and vegetables Nutritive value of grapes per 100 g Grapes, red or green (European type, Thompson seedless) (Source: USDA National Nutrient Database)
Health benefits of grapes Nutritive value of fruits and vegetables • Rich source of vitamin A, C, B6 and folate in addition to essential minerals like potassium, calcium, iron, phosphorus, magnesium and selenium. • Contain flavanoids that are very powerful antioxidants which can reduce the damage caused by free radicals and slacken ageing. • Considered as laxative food owing to their organic acid, sugar and cellulose
Nutritive value of fruits and vegetables Nutritive value of banana per 100 g (Source: USDA National Nutrient Database)
Health benefits of banana Nutritive value of fruits and vegetables • One banana has 11% of RDA of dietary fibre and only about 108 calories which helps to maintain healthy bowel movement. • Has high amount of potassium (13 % of RDA) that can help lower blood pressure, which helps to reduce incidence of atherosclerosis and heart attack. • Rich in vitamin B6 (34% of RDA) which helps to maintain proper. functioning of nervous system, production of white blood cells and plays pivotal role in cell formation.
Nutritive value of fruits and vegetables Nutritional value of tomato per 100g (Source: USDA National Nutrient Database)
Health benefits of tomato Nutritive value of fruits and vegetables • Contain ‘lycopene’ pigment which is a vital anti-oxidant that helps to fight against cancerous cell formation as well as other kinds of health complications and diseases. • When tomato products are heat processed the bioavailability of the Lycopene actually increases rather than the anticipated decrease. • It is a rich source of vitamins and minerals. A single tomato can provide 40% of the daily requirement of vitamin C which is a natural antioxidant. • High potassium helps to maintain nerve health, whereas high iro helps to maintain blood health. Tomatoes are rich in vitamin K which plays a major role in blood clotting. • It also improves eye health and prevents hypertension and urinary tract infections
Let us sum up Nutritive value of fruits and vegetables • Food is composed of nutrients: macronutrients and micronutrients classified according to the amount required for a healthy body. • Fruits and vegetables are called ‘Protective foods’. • They are a rich source of sugars, vitamins, minerals and bioactive compounds which help to maintain proper functioning of the body.