Food Additives

  • Published on
    24-Feb-2016

  • View
    107

  • Download
    0

Embed Size (px)

DESCRIPTION

Food Additives. More Nutritious than ever New improved flavor Stays fresher longer What are Food additives? Are they good? or Bad?. What are Food Additives?. Any substance a food producer intentionally adds to a food for a specific purpose Around 3,000 additives are used. - PowerPoint PPT Presentation

Transcript

Food Additives

Food AdditivesMore Nutritious than everNew improved flavorStays fresher longer

What are Food additives? Are they good?or Bad?What are Food Additives?Any substance a food producer intentionally adds to a food for a specific purposeAround 3,000 additives are used

Natural AdditivesOccur naturally in food and plantsSalt, sugar, seaweed, acids

Artificial, or Synthetic AdditivesMade in a laboratoryChemicals are joined or modified in the lab

How Additives are UsedImprove storage properties, increase healthfulness, make food more appealing and improve processing and preparation

We often feel misled and deceived by additives

Food Storage200 years ago we had to eat fresh foodsCan be natural or artificialKeeps food preserved prevents mold, bacteria, spoiling, browning

Increase HealthfulnessFortification: adding a nutrient not normally found in a food

Increase HealthfulnessRestoration: reestablish the products original nutritional value

Increase HealthfulnessEnrichment: Includes restoration of nutrients as well as the addition of more nutrientsThiamin, niacin, riboflavin, iron

Increase HealthfulnessNutrification: Adding nutrients to a food with low nutrient value to replace a mealNutrified bars and shakes

Make Food AppealingColor: added to drinks, cereal, jamsMost are Synthetic: identified with a numberVery few are natural

Make Food AppealingFlavor: 2,000 of the 3,000 additives are for flavorDemand for natural flavors far exceeds supplyMSG

Make Food AppealingSweeteners: most common of all flavor enhancers, improve aroma and tasteNutritive and Nonnutritive

Make Food AppealingNutritive Sweeteners: metabolize to produce caloriesTable sugar, brown sugar, maple syrup, molasses, honeySorbitol: absorbs slowly, does not taste as sweet

Make Food AppealingNonnutritive Sweeteners: Artificial, no calories, taste sweetLow-calorie and calorie free products

Make Food AppealingSplenda uses sucralose: 600 time sweeter then sugar, produces no calories, chemical change to sugar molecule, can cook with it

Make Food AppealingSweetN Low uses Saccharin: 300 times sweeter, made from petroleum products, can cook with it

Make Food AppealingAspartame: 200 times sweeter, no calories, cannot use in cooking, loses sweetness in beverages

Available evidence suggests that consumption of aspartame by normal humans is safe and is not associated with serious adverse health effectsAdded to more than 6,000 food productsBody breaks it down into aspartic acid, methanol and phenylalanine Aspartame FactsApproved intake is 50mg/kg of body wt/day12 oz diet soda: 225mg8 oz yogurt: 80mg4 oz jello: 32mg18kg/40lb child would have to consume 4 12oz cans of soda or nine 8oz glasses of fruitAspartame Factshttp://www.youtube.com/watch?v=lqIFDoOwSFMhttp://www.youtube.com/watch?v=nrahc-KfBRo&feature=relatedAspartame FactsProcessing & PreparationImprove texture, a stabilizer to keep mixture balancedPeanut butter and ice cream

Amount in mg that a person can safely consume on average every day over a lifetime without riskConservative levelAmount 100 times less than the maximum level at which no observed effect occurs in animalsAcceptable Daily Intake (ADI)Regulations of AdditivesFDA monitors safety of additives1/100 of the amount of an additive found to be safe in lab animalsGRAS list: Generally Recognized as Safe 670 items that are not regulated as additives

What are the long term Effects???Long term effects are impossible to predictNitrates: used to cure meat now being linked to colon cancerSaccharin removed from GRAS list show to cause cancer in lab animals

Sulfites- preservative FDA reduced the amount allowedMSG- flavorBHT- preservative Allergies

Increase fortified food decrease a diversified dietIncrease fortified food, challenge to determine nutritional balancePoor Eating Habits

Oil-based waxes on fruit = shinier = increased salesFDA approved as a preservativeUnnatural standards for foodsRaises priceBegin to prefer artificial over realUnneeded additivesPreservatives extend the shelf lifeAdditives prevent diseases caused by malnutritionGoiters, Iodine added to table saltsRickets, Vitamin D added to milkPellagra, iron added to flour and cornmealSafety & Improved Nutrition