Monthly changes in contents and compositions of oil of Callistemon citrinus: a comparison study

Abstract

The essential oil components of fresh and dry aerial parts of Callistemon citrinus, monthly harvested from Iran during a year were compared. The EO contents of dry plant samples were dramatically higher than the fresh materials. The dry sample collected in March with 1.10 ± 0.04% and fresh in August with 0.16 ± 0.01% (w/w), possessed the highest and lowest EO yields, respectively. From thirty-two identified aroma phytoconstituents, 1,8-cineole was the major compound with quantity variation of 60.01% in dry sample collected in January and 33.92% in fresh from August. In summer, the amount of α-pinene as the second predominant volatile terpenoid was raised, while dry sample in August (46.92%) was the richest. The present study explicitly demonstrates the impact of harvesting period on volatile oil contents of C. citrinus and the findings are considerable to obtain the favourite EO compositions for consuming in food and phyto-pharmaceutical industries.

Fourier Transform Infrared and Chromatographic Fingerprint of Essential Oil from Pogostemon benghalensis (Burm. F.) Kuntze

“…Eos are localized in different plant parts and regions, and their storage is related to specialized secretory structures. [2] Therapeutically, the Eos exert many activities, like antiseptic, stimulant, carminative, diuretic, anthelmintic, analgesic, anti-rheumatic, aromatic, counterirritant, and many other activities. Apart from food and pharmaceutical applications, they are also used as insect repellents, insecticides, pesticides, and deodorants.…”