In de huidige economische omstandigheden moeten veel huishoudens op de kleintjes letten, daar zou de aanbevolen nutriënteninname onder kunnen leiden. Onderzoeksleider Dr. Cathy Kapica constateert echter: "This research should assure families they are getting needed nutrition regardless of whether they choose canned, fresh, frozen or dried varieties. They can be confident in buying those foods that best meet their budgets, schedules, cooking abilities and taste preferences and still obtain important nutrients."
Voor het onderzoek werden verschillende voedingsmiddelen gekocht, bereid en geanalyseerd: mais, groene bonen, champignons, erwten, pompoen, spinazie, tomaten, peren, perziken, pinto bonen en tonijn. Vers, in blik, diepvries en gedroogd.
The foods were all cooked so that an accurate comparison could be made. They were anaylzed to determine the cost of several key nutrients, including protein, fiber, potassium, vitamin A, vitamin C and folate.
The researchers said that survey revealed that is is, for example, nearly 60% more expensive to obtain dietary fiber from fresh tomatoes as from the same portion of canned tomatoes.
"Not only is the price of canned tomatoes lower than fresh for the same serving size, but fresh tomatoes take longer to prepare, adding to the real cost of fresh," said the researchers.
Fotocredits: maureen lunn