β Scribed by Yvonne Holm; Raimo Hiltunen; Kari Jokinen; Timo Tormala
No coin nor oath required. For personal study only.
Mentha x piperita L. plants were regenerated from shoot tip cultures, cultivated in the field and their volatile oil composition was studied by headspace gas chromatography (HSGC). For initiation of shoots in vitro, MS-medium was used. The effect of 11 different hormone combinations, and MS-medium without hormones were tested in this phase. From these media three were selected for the multiplication experiments. The plants regenerated from these experiments were grown in the field in 1986 and 1987 and the composition of the volatile oil was analysed during the growing season. During the first year the micropropagated plants had a higher content of menthol than vegetatively propagated plants from the same stock plant, but in the second year the menthol content was about the same in both the micropropagated plants and the vegetatively propagated plants.
π SIMILAR VOLUMES
The authors have developed a method for determining the volatile oil content of onions. Using this method they found in the Hungarian Makd onions 0.019-0.031 % volatile oil, depending on storage. The composition of onion oil was studied by GC; GC-MS and TLC methods. GC-MS revealed 20 volatile sulph
Sept. 0, 1955 niny be co~npnred with the bchiivionr under the same conditions of two saniplcs of pure crystnllized calcium ncetylsnlicylntc nnd one of pure mngnesium ncctplsalicplate. These gnvc t,lic following results upon keeping at 37" C. : Snlicylic ncid ?& Initial 1 wcek 2 iveckfl Soniple h (Cn