Journal
ULTRASONICS SONOCHEMISTRY
Volume 14, Issue 5, Pages 646-652Publisher
ELSEVIER
DOI: 10.1016/j.ultsonch.2006.10.003
Keywords
extraction; Nicotiana tabacum L.; oil; seed; tobacco; ultrasound; ultrasonic extraction
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The ultrasonic extraction (UE) of oil from the seeds of a semi-oriental tobacco (Nicotiana tabacum L.) plant strain by using n-hexane and petroleum ether was studied at different temperatures and seeds-to -solvent ratios. The oil yield depended on the seed comminution, the extraction temperature, the seeds-to-solvent ratio and the type of solvent. The oil yield was much higher if the seeds were ground before extraction. The oil yield increased with increasing the extraction temperature and with decreasing the seeds-to-solvent ratio. n-Hexane was somewhat more efficient in the oil extraction than petroleum ether. In recovering the tobacco seed oil (TSO), the UE was less efficient than the Soxhlet extraction. The advantage of the UE was a relatively high oil yield at 25 degrees C in a shorter time. The kinetics of UE of TSO was described using the model of unsteady diffusion through plant material. (c) 2006 Elsevier B.V. All rights reserved.
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