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Abstract ▼ AI-Helper

The effects of carbohydrate sources(sucrose, glucose) and ratio of ammonia to nitrate on essential oil production and its com- positions in the callus culture of Mentha piperita L. were studied. An ammonia : nitrate ratio of 1 :2 was more effective for essential oil production regardless of the medi...

The effects of carbohydrate sources(sucrose, glucose) and ratio of ammonia to nitrate on essential oil production and its com- positions in the callus culture of Mentha piperita L. were studied. An ammonia : nitrate ratio of 1 :2 was more effective for essential oil production regardless of the media used ; Lin-Staba(LS) and modify Murashige-Skoog(MS) medium. Menthol biosynthesis was enhanced when ratio of ammonia to nitrate was 1 :3 in the LS medium while the ratio was 1 :2 in the MS medium. Lower sucrose concentration(20g /1 ) was much better than higher sucrose concentration(30g /1) for both oil and menthol biosynthesis in the LS medium but higher sucrose concentration(30g /1) was more effective for those in the MS medium. When sucrose was replaced with glucose, menthol biosynthesis was sharply decreased or absent regardless of media used.