Dergiler / Balıkesir Üniversitesi Fen Bilimleri Enstitüsü Dergisi / 2002 / Cilt: 4 - Sayı: 2

Extraction of Stinging Nettle (Urtica dioica L.) with Supercritical Carbondioxide

V. RAFAJLOVSKA,Z. DJARMATİ,V. NAJDENOVA,Lj. CVETKOV

Sayfa
49–52
DOI
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Özet

Öz The extraction of the stinging nettle leaves was performed with 20 kg/h flow rate of supercritical CO2. The influence of the working parameters: pressure (140 bar, 210 bar and 350 bar), temperature (from 40 oC to 60 oC) on the quantity of extract and contents of chlorophyll a+b and β-carotene in it is determined. The biggest quantity of extract (4.48% in relation to the dry matter) with 0.88% contents of chlorophyll a+b and 0.50% β-carotene is obtained at 350 bar, 60 oC, 6h extraction time

Anahtar kelimeler: Anahtar Kelimeler stinging nettle, supercritical CO2, chlorophyll, β-carotene, yield of extract