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Unformatted text preview: Fruits & Vegetables March 1-3, 2010 Canada’s Food guide recommends 7-10 servings per day • Juice box can be counted as 2 servings • 1 medium sized fruit or veggie • ½ cup of fresh, frozen, or canned product • 1cup of salad; half cup cooked leafy veggies • ½ cup of 100% juice Plant tissues ultimately supply the majority of the human food supply: • 100-200 species are important in world trade • 14 species are responsible for the bulk of food crops: Starch Legumes Oil/Lipid Protein Fibre • Rice • Beans • Soybean • Wheat Sweetness • Peanuts • Sorghum • Sugar Cane • Coconut • Barley • Sugar Beets • Banana • Cassava • Potato/Sweet Potato What is a fruit? A fruit is defined as the mature ovary of a flower including the seeds: i. Simple fruit • Pomes = apples, pears • Drupes = stone fruit; plums, cherries, peaches • Citrus = limes, oranges ii. Aggregate fruit • Single flower with multiple stamens or ovaries • Soft berries • Ex. raspberries, blackberries, strawberries iii. Multiple fruit • Cluster of multiple flowers • Ex. pineapple, figs Main difference between fruit & veggies: as fruits mature, sugar levels increase as starch levels decrease (starch is converted to sugar); in veggies, starch levels increase and sugar levels decrease Fruits & Vegetables March 1-3, 2010 What is a vegetable? Vegetables include other edible forms of plant tissue including: i. Roots • Tap root energy (CHO) storage deposits as starch • Beets, carrots, radishes, parsnips, rutabagas, turnips, daikon, celeriac (celery root) ii. Tubers • Enlarged, edible fleshy stems growing under the ground • White potatoes, sweet potatoes, Jerusalem artichoke, jicama iii. Stems • Brassica family: functional foods – act as antioxidants • Broccoli, Brussels sprouts, celery iv. Leaves • High water content • Rich in vitamins & minerals • Contain chloroplasts & chlorophyll o Give colour • Dark green = pro vit A • cabbage, Chinese cabbage, endive, parsley, cilantro, leaf lettuce, head lettuce, kale, kohlrabi v. Pods & Seeds • Legumes & pulses • Valued for starches, soften protein sources • Valued for oil content • Seeds from the Leguminosae family, a family of plant unique for the ability to fix nitrogen into the soil, thus enriching the soil...
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This note was uploaded on 12/26/2011 for the course FND 100 taught by Professor Y.yuan during the Winter '10 term at Ryerson.
- Winter '10