ABSTRACT: Slachys sylvatica L. is a perennial herb belonging to the genus Stachys, widespread in all the Italian peninsula in mountainous and moist places. The whole plant emanates an unpleasant smell and is covered by non-glandular and glandular trichomes, which give it a velvety look. Glandular trichomes are capitate trichomes, which occur in three types: (a) short capitate, characterized by one stalk cell, two secretory cells and a small subcuticular space; (b) long capitate, characterized by a stalk of two or three cells, four secretory cells and a large subculicular space; (c) very long capitate, characterized by a stalk of three or more cells and four or more secretory cells, each of them bearing a small swelling space on the apex. Trichomes of types (a) and (b) are present over the whole plant-leaves [adaxial side bears only type (a) along the veins], stalk and inflorescences. Type (c) is present only on the inflorescence-flowers, calices and bracts. The plant is used for medicinal purposes (mostly as an antispasmodic) jn Italian folk medicine. The oil composition of inflorescences and leaves of S. sylvatica from ltaly was analysed by GC-MS. The most abundant compounds in the oil from the inflorescences were germacrene D (55.2%), (E)--farnesene (9.1%) and n-tetracosane (6.9%), whilst germacrene D (31.7%), n-tetracosane (7.8%) and mint sulphide (6.4%) were the main compounds in the oil from the leaves. Other compounds: -pinene, -pinene, myrcene, limonene, -3-carene, (E)- -ocimene, -terpinene, terpinolene, linalool, n-undecane, nonanal, safrole, -cubebene, -copaene, -bourbonene, -elemene, dodecanal, -caryophyllene, -copaene, (E)--bergamotene, cis-muurola-3,5-diene, -humulene, allo-aromadendrene, -muurolene, bicyclogermacrene, -muurolene, (E.E)--farnesene, germacrene A, -cadinene, -cadinene, -sesquiphellandrene, (E)--bisabolene, elemol, (E)-nerolidol, germacrene, viridiflorol, -eudesmol, (Z)-cadin-4-en-7-ol, epi--cadinol, epi--muurolol, -bisabolol, -eudesmol acetate, hexadecanoic acid, phytol, octadecanol, n-tricosane.
Essential oil composition of Stachys sylvatica L. from Italy.
TIRILLINI, BRUNO;
2004
Abstract
ABSTRACT: Slachys sylvatica L. is a perennial herb belonging to the genus Stachys, widespread in all the Italian peninsula in mountainous and moist places. The whole plant emanates an unpleasant smell and is covered by non-glandular and glandular trichomes, which give it a velvety look. Glandular trichomes are capitate trichomes, which occur in three types: (a) short capitate, characterized by one stalk cell, two secretory cells and a small subcuticular space; (b) long capitate, characterized by a stalk of two or three cells, four secretory cells and a large subculicular space; (c) very long capitate, characterized by a stalk of three or more cells and four or more secretory cells, each of them bearing a small swelling space on the apex. Trichomes of types (a) and (b) are present over the whole plant-leaves [adaxial side bears only type (a) along the veins], stalk and inflorescences. Type (c) is present only on the inflorescence-flowers, calices and bracts. The plant is used for medicinal purposes (mostly as an antispasmodic) jn Italian folk medicine. The oil composition of inflorescences and leaves of S. sylvatica from ltaly was analysed by GC-MS. The most abundant compounds in the oil from the inflorescences were germacrene D (55.2%), (E)--farnesene (9.1%) and n-tetracosane (6.9%), whilst germacrene D (31.7%), n-tetracosane (7.8%) and mint sulphide (6.4%) were the main compounds in the oil from the leaves. Other compounds: -pinene, -pinene, myrcene, limonene, -3-carene, (E)- -ocimene, -terpinene, terpinolene, linalool, n-undecane, nonanal, safrole, -cubebene, -copaene, -bourbonene, -elemene, dodecanal, -caryophyllene, -copaene, (E)--bergamotene, cis-muurola-3,5-diene, -humulene, allo-aromadendrene, -muurolene, bicyclogermacrene, -muurolene, (E.E)--farnesene, germacrene A, -cadinene, -cadinene, -sesquiphellandrene, (E)--bisabolene, elemol, (E)-nerolidol, germacrene, viridiflorol, -eudesmol, (Z)-cadin-4-en-7-ol, epi--cadinol, epi--muurolol, -bisabolol, -eudesmol acetate, hexadecanoic acid, phytol, octadecanol, n-tricosane.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
