Supercritical Carbon Dioxide Extraction of Indian Orange Peel Oil and Hydro Distillation Comparison on Their Compositions

Abstract

Orange peel oil being very useful in foods, flavor, and pharmaceutical industry consumed worldwide. An attempt was made to extract the oil using SC-CO 2 to study the quality, quantity and compositions of the oil. Pressures ranging from 8-15 MPa with temperatures ranging from 28-60℃ were employed. Quality of the oil was analyzed by GC and Capillary GC. Supercritical carbon dioxide was found to extract the oil containing all the low volatile fractions and oil obtained was light pale yellow in color. Shelf life of the oil was found much better than that extracted with conventional techniques. Various pre-treatments were exercised to prolong the good life of peels to study the impact on their physical properties and quality along with the yields. Alkaline treatment of the orange peels reveals some important observations in the extractions of constituents.

Solid State Fermentation of Orange Peels for Production of Cellulase, Pectinase and Recovery of Orange Oil using Aspergillus Species NCIM 1432.

“…The GC-MS analysis of the oil showed the presence of α-pinene, d-limonene, limonene oxide, linalool and citronellal in the extracted oil. The composition of oil is comparable to the composition of oil obtained by supercritical extraction process [14] by our processes of UVAE and MWAE assisted extraction) The HPLC-MS showed the presence of Tangeritin, Sinensetin, Nobiletin, Tocotrienol, and Tocopherol acetate in the oil. The composition of the oil is comparable with different processes in literature [63][64][65].…”

“…The SSF provides anchorage for the growing microbial cultures and also prevents bacterial contamination due to low moisture content. There are several reports on production of various chemicals including isothiocyanates from Brassica vegetable, corn oil, palm oil, soyabean oil, coconut virgin oil, and citric acid by SSF and enzymes [12][13][14][15][16] The literature indicates that the SSF improves the production of enzymes, antibiotics, organic acids, pesticides, aroma, and bio-fuel. However, there are no reports on orange peel oil extraction by the generation of essential enzymes by fermentation [11,[17][18].…”