Supercritical carbon dioxide fluid extraction of Hibiscus cannabinus L. seed oil: A potential solvent-free and high antioxidative edible oil

Abstract

The supercritical fluid extraction (SFE) trends and antioxidant activities of Hibiscus cannabinus seed oils were studied. SFE results indicate that extraction pressure is the major factor determining the oil yield. In comparison, classic Soxhlet extraction (SOX/L) yielded higher oil content than SFE (P < 0.05). However, no significant differences in oil content were observed in SFE at 600 bars/80 °C, rapid Soxhlet extraction (SOX/S) and conventional ultra-sonic assisted solvent extraction (SONIC) (P > 0.05). Antioxidant activities of H. cannabinus seed oils were compared with 7 types of commercial edible oils. DPPH scavenging activity test indicated that H. cannabinus seed oil extracted by SFE at 200 bars/80 °C possessed the highest antiradical activity whereas beta-carotene bleaching (BCB) assay revealed that all H. cannabinus seed oils (except for SFE at 400 bars/80 °C and 600 bars/80 °C) exhibited higher antioxidant activity than all commercial edible oils (P < 0.05). Thus, SFE-H. cannabinus seed oil may serve as an excellent source of solvent-free edible oil with high antioxidant properties.

Components, Antioxidant and Antibacterial Activity of Tomato Seed Oil

“…Earlier study has shown that kenaf seed oil might actually possess better antiradical activity if compared with some commercial edible oils (canola oil, corn oil and so on) and it can potentially serve as high antioxidative edible oil. Compared with this study, the IC 50 value for tomato seed oil was 1590 µg/mL, only about 13% of that of kenaf seed oil, 12270 µg/mL (Chan and Ismail, 2009). This result showed that the tomato seed oil might actually possess better antiradical activity if compared with kenaf seed oil and it can potentially serve as a high antioxidative edible oil.…”

Fatty acid composition and antioxidant activity of oils from two cultivars of Cantaloupe extracted by supercritical fluid extraction

“…In a previous study (Chan and Ismail 2009), our group showed that using the extraction pressure 600 bars and temperature of 40°C gave a high yield of oil extraction for Hibiscus cannabinus using SFE. Depending on that result we used 600/40 extraction parameters for the extraction of the cantaloupe oil.…”

Supercritical Carbon Dioxide Extraction of Sorghum Bug (Agonoscelis pubescens) Oil Using Response Surface Methodology

“…In addition, carbon dioxide is both non-toxic and non-explosive and its use can reduce the consumption of organic solvents; this is especially useful for the production of natural products used in foods and pharmaceuticals [2]. Supercritical carbon dioxide (SC-CO 2 ) has been successfully used for the extraction of oils from oil seeds including parsley seed [1], cottonseed [3], palm kernel [4] and kenaf seed [5].…”