Influence of harvesting time on the yield and chemical composition of sage (Salvia officinalis L.)
2011
Baranauskiene, R., Kaunas Univ. of Technology (Lithuania). Dept. of Food Technology | Dambrauskiene, E., Lithuanian Research Centre for Agriculture and Forestry, Babtai, Kaunas distr. (Lithuania). Inst. of Horticulture | Venskutonis, P.R., Kaunas Univ. of Technology (Lithuania). Dept. of Food Technology | Viskelis, P., Lithuanian Research Centre for Agriculture and Forestry, Babtai, Kaunas distr. (Lithuania). Inst. of Horticulture
Sage (Salvia officinalis L.) was harvested at different periods from May 23 to July 11. The yield of crop depended on plant growing phase and was 3.0–10.0 of fresh and 0.5–2.7 t haE-1 of dried herb. Total essential oil (EO) content increased from May 23 to June 20 and was 0.1–0.2 in fresh and 0.4–1.0 cm**3 100 gE-1 in dried herb. Seventy compounds were identified in sage EOs by GC and GC-MS. It is evident that S. officinalis grown in Lithuania depends to α-thujone and camphor chemotype: the content of α-thujone in EO varied in the range of 15.2–39.7%; that of β-thujone 5.3–7.9%. Other important components were 1,8-cineole, camphor, borneol, α-humulene, viridiflorol and manool. In addition, the amounts of dry soluble solids, ascorbic acid, carotenes, nitrates and total sugars were determined in fresh raw material at different growth stages.
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