Studies on Allamanda cathartica Seed Oil: A Novel Source of Plant Oil Substitute for Industrial Processing

Abstract

Oil from Allamanda cathartica seed was extracted using n-hexane as solvent in soxhlet extractor. The physicochemical and antioxidants properties of the oil were carried out using standard analytical methods. The fatty acid attributes of the extracted seed oil were determined by Gas Liquid Chromatographic (GLC) method. The results of the physicochemical properties gave the followings: Specific gravity (0.87±0.04 g/cm3), refractive index (1.46±0.02 at 30°C), viscosity (53.12±0.08 mpal/sec), acid value (69.17±0.12 mg/g), peroxide value (1.86±0.02 meg O2/kg), saponification value (81.59±0.18 mg/g), iodine value (41.78±0.04 mg/100 g) and unsaponifiable matter (1.61±0.02%). The antioxidant analysis gave 2,2diphenyl picryl-1-hydrazyl radical scavenging capacity (DPPH) as (62.13±0.13%), ferric reducing antioxidant power (FRAP) (0.63±0.01%) and phenols (0.63±0.01%). The extracted oil was found to contain 64% saturated, 32% unsaturated and 4% polyunsaturated fatty acids. Margaric (23.74 g/100 g) and erucic acids (11.35 g/100 g) were the main saturated and unsaturated fatty acids, respectively in the seed oil. The overall results revealed that Allamanda cathartica seed oil is a potential source of plant oil alternative to the existing sources of oils.

Effects of Drying Techniques and Different Solvents on Phytochemical Composition and Antioxidant Activity of Carica papaya Seed Extracts: Implications for Industrial Use and Medicinal Benefits

“…The concentration detected in this sample is far lower than the toxicity level thus confirming that C. papaya seeds are safe for consumption. The result presented in this work is comparable to the report of Oyeleke et al [11] on the antinutritional composition of C. papaya seeds.…”

“…It has also been found that the method of preparation of medicinal plants is important in determining the quality and quantity of the bioactive compounds obtained from them. Some studies have been carried out on the phytochemical composition of Carica papaya plant extract [8][9][10] but only few studies have worked on the phytochemical composition of Carica papaya seeds [5,11]. Fewer researchers also investigated the effects of drying techniques and solvents used for extraction on the constituents of the phytochemicals and antioxidant activity of the seeds [12].…”

Health Workers Perception on Precautionary Knowledge and Practices in Secondary Hospitals and Isolation Centres for COVID-19 Preventive Measures in Lagos State, Nigeria

“…A possible reason for the high number is the stage of infection; the country had reached the phase of community transmission [13]. Signs of community transmission were first publicized at a press briefing on April 1, and this later became more evident with 203 positive cases whose sources of infection remain indeterminate, according to the NCDC [14].…”