J. Sci. Agri. Technol. (2022) Vol. 3 (1): 12-15
DOI: https://doi.org/10.14456/jsat.2022.3
Abstract
Hemp (Cannabis sativa L.) is a multi-purpose plant that recently got lots of attention in Thailand. In previous years, various studies have been done regarding the application of hemp fiber, especially in the textile sector. After the government has unlocked regulation regarding hemp cultivation and its application, hemp seed has become a remarkable part as oil content in the seeds can be used for multiple purposes. The hemp oil extraction process becomes more important to get a higher yield. So, this research interest has been focused on comparing conventional and soxhlet extraction methods using water, n-hexane, and petroleum ether as extraction solvents. The experimental results showed that solvent has an impact on the extraction efficiency of hemp seed oil as well as the extraction method. Petroleum ether as a solvent by the soxhlet extraction method showed a significantly (P<0.05) higher yield (24.44%) compared to those of conventional extraction (17.06%). Additionally, using n-hexane as a solvent by the soxhlet extraction method showed a higher yield (21.65%) than the conventional extraction (18.78%). However, water has better efficiency in conventional extraction (4.56%) than the soxhlet extraction method (1.27%). According to the experimental results, the soxhlet extraction method using petroleum ether as an extraction solvent is recommended to get a higher oil yield from hemp seed.
Keywords: hemp seed, oil extraction method
Received: January 21, 2022. Revised: February 28, 2022. Accepted: March 12, 2022.
