Food Additives Overview
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Questions and Answers

Which of the following substances is classified as a food additive?

  • Natural herbs
  • Fresh vegetables
  • Sun-dried tomatoes
  • Riboflavin (correct)

    • What does an E number indicate about a food additive?

  • It is a natural substance.
  • It is chemically synthesized only.
  • It is harmful to health.
  • It has been deemed safe for consumption. (correct)

    • What perception do people generally have towards natural materials compared to synthetic ones?

  • Natural materials are considered less safe.
  • Natural materials are viewed positively while synthetic ones are often mistrusted. (correct)
  • Synthetic materials are preferred.
  • There is no difference in perception between natural and synthetic materials.

    • Which of the following is an example of a preserved food product mentioned in the content?

    <p>E200 (D)</p> Signup and view all the answers

    When is the second test scheduled?

    <p>7 November 2024 (D)</p> Signup and view all the answers

    Which of these vitamins is referenced as a safe food additive?

    <p>Vitamin B2 (B)</p> Signup and view all the answers

    Which of the following statements is NOT true about food additives?

    <p>They are always dangerous to health. (A)</p> Signup and view all the answers

    What is the primary purpose of preservatives in food products?

    <p>Keep the product fresh for an extended period (D)</p> Signup and view all the answers

    What might lead to suspicion regarding food additives?

    <p>Their origin as synthetic materials. (A)</p> Signup and view all the answers

    Which E number range is associated with antioxidants?

    <p>300–399 (C)</p> Signup and view all the answers

    What common food additive is represented by the E number E300?

    <p>Vitamin C (Ascorbic acid) (D)</p> Signup and view all the answers

    Which of the following E number ranges includes emulsifiers?

    <p>400–499 (A)</p> Signup and view all the answers

    Which of the following substances is used as an antimicrobial reagent?

    <p>Benzoates (A)</p> Signup and view all the answers

    What is the main function of antioxidants in food?

    <p>To prolong shelf life by preventing oxidation (C)</p> Signup and view all the answers

    Which of the following E numbers corresponds to a glazing agent or sweetener?

    <p>E900 (D)</p> Signup and view all the answers

    Which of the following substances primarily serves as a softener in cosmetic products?

    <p>Vaseline (B)</p> Signup and view all the answers

    Which preservative is identified as E203?

    <p>Calcium sorbate (A)</p> Signup and view all the answers

    What is the primary function of preservatives mentioned in the content?

    <p>Maintaining freshness and preventing spoilage (C)</p> Signup and view all the answers

    Which of the following pain killers was discovered in 1961?

    <p>Ibuprofen (C)</p> Signup and view all the answers

    Which component is correct about the calorie conversion?

    <p>1 J = 0.239 kcal (A)</p> Signup and view all the answers

    What is the primary purpose of Rennie?

    <p>To neutralize gastric acid (B)</p> Signup and view all the answers

    Which of the following substances is NOT classified as a preservative?

    <p>Magnesium hydroxide (D)</p> Signup and view all the answers

    Which ingredient in Alka-Seltzer is responsible for helping relieve stomach discomfort?

    <p>Citric acid (A)</p> Signup and view all the answers

    Which medication was first synthesized in 1853?

    <p>Aspirin (C)</p> Signup and view all the answers

    What is Ranigast primarily designed to alleviate?

    <p>Heartburn pain (D)</p> Signup and view all the answers

    What type of medications are classified under 'essential supplies' in home pharmacy?

    <p>Pain killers (C)</p> Signup and view all the answers

    Which of the following is NOT an active component of antiseptic hand products?

    <p>Calcium oxalate (C)</p> Signup and view all the answers

    Which of the following medications was synthesized in 1877?

    <p>Paracetamol (A)</p> Signup and view all the answers

    What does the term 'Handrubs' refer to?

    <p>Hand sanitizers (A)</p> Signup and view all the answers

    Which of the following statements about antimicrobial hand soap is true?

    <p>It is specifically formulated to combat bacteria. (D)</p> Signup and view all the answers

    What is the function of boric acid in eye care products?

    <p>To soothe irritation (D)</p> Signup and view all the answers

    Which substance is known for reducing the production of stomach acid?

    <p>Ranitidine hydrochloride (C)</p> Signup and view all the answers

    What is the primary role of H2O2 in bulk solutions?

    <p>To eliminate contaminating spores. (D)</p> Signup and view all the answers

    Which concentration range of H2O2 is mentioned for production, despite its complications?

    <p>3–6% (C)</p> Signup and view all the answers

    What characteristic makes glycerol a preferred humectant for hand hygiene products?

    <p>It is safe and relatively inexpensive. (B)</p> Signup and view all the answers

    Which of the following is NOT a type of medication mentioned?

    <p>Antibiotics (B)</p> Signup and view all the answers

    Why might lowering the percentage of glycerol in hand hygiene products be beneficial?

    <p>To reduce stickiness. (C)</p> Signup and view all the answers

    Which requirement is NOT listed for other humectants or emollients used in skin care?

    <p>Chemically enhanced (B)</p> Signup and view all the answers

    What function do additional components in medicine pills serve?

    <p>To provide shape, coating, or consistency. (D)</p> Signup and view all the answers

    How does H2O2 contribute to safety in production?

    <p>By preventing contamination. (B)</p> Signup and view all the answers

    Study Notes

    Exam Information

    • The first exam was on October 10th, 2024.
    • The second exam is scheduled for November 7th, 2024.
    • The third exam is scheduled for December 12th, 2023.
    • The final exam date is January 9th, 2024 at 3 PM.

    Food Additives

    • Food additives are substances added to food to affect its characteristics, such as taste, texture, or shelf life.
    • The European Union (EU) and European Free Trade Association (EFTA) use a numbering scheme (E numbers) to identify food additives.
    • The European Food Safety Authority (EFSA) is responsible for the safety assessment and approval of E numbers.
    • E numbers are classified into groups based on the substance's function, including colors, preservatives, antioxidants, thickeners, stabilizers, emulsifiers, etc.

    Preservatives

    • Preservatives help extend the shelf life of food by inhibiting microbial growth.
    • Common examples of preservatives include benzoates (E200-E211) and sorbates (E203).
    • Preservatives have numerous applications in food, pharmaceuticals, cosmetics, pigments, dyes, biological substances, and wood.

    Antioxidants

    • Antioxidants prevent oxidation, which can degrade food quality and alter taste and appearance.
    • Examples of antioxidants include vitamin C (ascorbic acid, E300), gallic acid, and others.

    Emulsifiers

    • Emulsifiers stabilize mixtures like mayonnaise and margarine, preventing separation into different phases.
    • Glycerol (E422) is a common emulsifier.

    Home Pharmacy

    • Home pharmacy refers to essential medications and supplies kept at home for personal use.
    • Common household medications include painkillers, stomach disorder remedies, eye and ear drops, antiseptics, cough suppressants, diarrhea medication, and blood circulation enhancers.

    Pain Relievers

    • Ibuprofen, a non-steroidal anti-inflammatory drug, was discovered in 1961.
    • Paracetamol, an effective painkiller, was synthesized in 1877 and tested on humans in 1887.
    • Aspirin, a well-known painkiller, can also reduce inflammation. It was first synthesized in 1853 and later improved by Bayer in 1897-1899.

    Stomach Disorder Medications

    • Rennie neutralizes gastric acid, reducing stomach pain.
    • Alka-Seltzer, a drink, is used to relieve hangovers, headaches, and stomach discomfort.
    • Ranigast reduces heartburn by decreasing stomach acid production.

    Eye and Ear Drops

    • Optrex soothes irritated and tired eyes and cleanses them.
    • Common ingredients in eye and ear drops include water, boric acid, glycerol, gallotannin, witch-hazel extract, sodium tetraborate decahydrate, benzalkonium chloride, and calcium oxalate.

    Antiseptic Products

    • Antiseptic hand rubs typically contain ethanol (alcohol) as the main active ingredient, along with glycerol, hydrogen peroxide, and other additives.
    • Glycerol is added as a humectant to improve the product's feel and reduce stickiness.
    • Hydrogen peroxide is included for its antimicrobial properties and to help eliminate bacterial spores in the solution.

    Additional Medicine Components

    • Many pills and medications contain additional components that are not harmful and are used to adjust shape, coating, consistency, taste, and smell.

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    Related Documents

    Vilnius University Chemistry Lecture 6 PDF

    Description

    This quiz covers the fundamentals of food additives, including their functions, classifications, and regulatory aspects in the EU. It particularly emphasizes the E numbering system and the role of preservatives in extending shelf life. Test your knowledge on the various types of food additives and their applications.

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