| 31. | Caffeine is a bitter white alkaloid and a mild stimulant.
|
| 32. | Some synthetic compounds of similar structure are also termed alkaloids.
|
| 33. | Some authors, however, consider alkaloids a special case of amines.
|
| 34. | Some alkaloids do not have the carbon skeleton characteristic of their group.
|
| 35. | Furthermore, different tissues of the same plants may contain different alkaloids.
|
| 36. | The extracted alkaloids may remain salts or change into bases.
|
| 37. | In the Alkaloid Extraction Unit only base morphine is produced.
|
| 38. | The remaining alkaloids in the latter cultivar are primarily narcotoline and noscapine.
|
| 39. | The piperidine structural motif is present in numerous natural alkaloids.
|
| 40. | Tobacco contains the alkaloid nicotine, which is a stimulant.
|
