COMPARISON OF GINGER (Zingiber officiale Roscoe) OLEORESIN OBTAINED WITH ETHANOL AND ISOPROPANOL WITH THAT OBTAINED WITH PRESSURIZED CO2

Abstract

Ginger (Zingiber officinale Roscoe) belongs to the Zingiberacea family. It is a spice of great commercial importance. In this work ginger oleoresin was obtained with ethanol, isopropanol and liquid carbon dioxide. The chemical compositions of the extract were compared with each other. All oleoresin samples had monoterpenes and sesquiterpenes. Carboxylic acids were found in organic solvent extracts for an extraction time of 2 hours. The component responsible the for pungent characteristic of the oleoresin, gingerois, were detected in samples obtained with organic solvent for extraction times of 6 hours and in samples obtained with CO2 liquid for extraction times of 2 hours.<br>O gengibre (Zingiber officinale Roscoe) pertence à família Zingiberacea. É uma especiaria de grande importância comercial. Neste trabalho realizou-se extrações da oleoresina de gengibre com etanol, isopropanol e dióxido de carbono líquido e comparou-se a composição química de cada um dos extratos. A oleoresina obtida tem componentes das classes dos monoterpenos e sesquiterpenos em todas as amostras. Ácidos carboxílicos foram encontrados nos extratos obtidos com solvente orgânico, quando o tempo de extração foi de 2 horas. Os componentes que dão a característica pungente à oleoresina, os gingerois, foram detectados nas amostras obtidas com solvente orgânico, quando o tempo de extração foi de 6 horas e, nas amostras obtidas com CO2 líquido, com 2 horas de extração

Rapid estimation of the manufacturing cost of extracts obtained by supercritical fluid extraction

“…As ginger oleoresin can be used as a nutraceutical, some other factors such as the amount and availability of the active components should be considered. Nobrega, Monteiro, Meireles, and Marques (1997) showed that the supercritical ginger extracts contain gingerols that are absent or present only in small quantities in the ginger oleoresin obtained with ethanol and isopropyl alcohol as extraction solvents. Additionally, if the ginger solid waste (ginger bagasse) is used to produce oligosaccharides as proposed by Moreschi et al (2004) this would reduce the manufacturing cost of ginger.…”

Use of ultrafiltration and supercritical fluid extraction to obtain a whey buttermilk powder enriched in milk fat globule membrane phospholipids

“…Supercritical fluid extraction (SFE) has been utilized to extract lipids from foods, such as nuts and spices (Araújo, Machado, França, & Meireles, 2000;Coelho, Oliveira, & Pinto, 1997;Lameira, Coelho, & Mothé, 1997;Nobrega, Monteiro, Meireles, & Marques, 1997;Silva, Mendes, Pessoa, & Queiroz, 2008). More recently, some research groups have successfully used this technology on dairy products.…”

Perspectives and Applications of Natural Products as Civilian Defense Devices

“…58,102,112 The quality of oleoresin as a function of the 6-gingerol content using SFE was higher, 112 producing an extract in which 22.30% of the total weight was 6-gingerol, whereas using Soxhlet and maceration it was 4.59 and 6.26%, respectively. 99 Piper oleoresin is more difficult to obtain by supercritical fluid extraction than Capsicum and Zingiber. Piperine oleoresin extraction demands high pressures and working temperatures to make it soluble in carbon dioxide, which increase the operating costs of the method.…”