Q.93
Which of the following food additives are used as sequestrant?
(A). Sodium tartrates
(B). Sodium citrate
(C). Sodium nitrate
(D). Sodium isoascorbate
Choose the correct answer from the options given below:
- Food Sequestrants (Chelating Agents):
- Compounds that bind and complex polyvalent metal ions (such as $\text{Fe}^{2+}, \text{Fe}^{3+}, \text{Cu}^{2+}, \text{Ca}^{2+}$), preventing them from catalyzing lipid oxidation, enzymatic browning, and turbidity.
- Sodium Tartrates and (B) Sodium Citrate: Classic hydroxy-carboxylic acid salts featuring multiple carboxylate and hydroxyl ligand groups that form stable coordination complexes with pro-oxidant metal cations.
- (C) Sodium Nitrate: Antimicrobial and curing agent in processed meats.
- (D) Sodium Isoascorbate (Erythorbate): Direct antioxidant reducing agent.
- Correct Option: Option 1 ((A) and (B) only).
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