| 21. | All the products are organic and free from additives and preservatives.
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| 22. | All the products are natural and free from additives and preservatives.
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| 23. | Whale oil had been prized as a preservative, Tau said.
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| 24. | They are free from caffeine, artificial preservatives or artificial colouring.
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| 25. | Citric acid is used as a preservative in sauces and pickles.
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| 26. | This has caused reexamination of natural preservatives which occur in vegetables.
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| 27. | The use of food preservatives varies greatly depending on the country.
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| 28. | Some winemakers practice natural wine making where no preservative is added.
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| 29. | It is used as a disinfectant, antioxidant and preservative agent.
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| 30. | They soon found that the absorbed smoke acted as a preservative.
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