| 31. | Additionally, this method is the only one to discriminate between natural and biosynthetic sources of vanillin.
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| 32. | For instance, some manufacturers use vanillin instead of real vanilla, and some use more chocolate liquor.
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| 33. | Hummer said . ( Vanillin, not surprisingly, is the same chemical found in vanilla beans .)
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| 34. | However, unlike vanillin synthesized from lignin or guaiacol, it can be labeled as a natural flavoring.
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| 35. | Chemical analysis has shown that the secretions are composed of p-cresol, guaiacol, and vanillin.
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| 36. | For example, the methyl ether in vanillin can be removed by heating near 250 �C with strong base.
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| 37. | In the past " p "-hydroxybenzaldehyde was speculated to be a precursor for vanillin biosynthesis.
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| 38. | "' Isovanillin "'is a phenolic aldehyde, an organic compound and isomer of vanillin.
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| 39. | The agave plant contains many terpenes such as vanillin and syringaldehydes which presents a strong and fruity or herbal aroma.
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| 40. | Vanillin and ethylvanillin are used by the food industry; ethylvanillin is more expensive, but has a stronger note.
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