ABSTRACT
Extraction of neem seed oil was carried out using solvent extraction (n-hexane). 200g of neem seed yield 40ml of oil which is 80% yield. The neem oil is dark brown in colour, it has a strong odour that is said to combine the odours of palm kernel and garlic. The extraction of neem seed oil occurred in batches using solvent (n-hexane) also soxhlet extractor was used. The sample was ground and 200g was weighed out and soaked with 1000ml of n-hexane for 24 hours. With the help of butchner funnel and the vacuum pump, the solvent (n-hexane and neem seed oil) was filtered off from the sample leaving the residual in the buchner funnel. As the solvent was being heated, it vapourized and passed through the condenser and then condensed and trickled down on the thimble containing the neem seed. The reaction occurred in the thimble. The n-hexane now extracts the essential oil in the sample and also other impurities like resins and waxes. When the liquid level filled the body of the extraction, it was then automatically siphoned back to the flask. This extract took about three hours for complete extraction. At the end, the set was dismantled and the sample changed. At the end of the extraction using 200g of neem seed and 100ml of n-hexant, 40m of neen seed oil was obtained.
ABSTRACT:
This study examines the influence of corporate governance on financial reporting integrity in...
ABSTRACT
Despite the increasing disciplinary and career related challenges, not much focus has been placed on Undergradu...
Background to the Study
In the turbulent business environment, with changes in customer demands the mai...
ABSTRACT
The study was carried out to investigate student‘s perception of the determinants of enrolment in agricultural education p...
Abstract
This study examines the relationship between the third world countries and the western capitalist countri...
ABSTRACT
This research sought to examine inventory management practices of Enugu state Ministry of works. The study is a...
Background to the study
Since the debt crisis in the early 1980s, attention has been focused on the out...
STATEMENT OF THE PROBLEM
A large proportion of the government health institutions are faced with similar problems. These problems hinder...
ABSTRACT
This study assessed the availability and used of Instructional Materials by secondary school Economics teacher...
ABSTRACT
This study focused on assessment of the practices of resource management in business organizations in Port Har...