Journal
JOURNAL OF FOOD PROCESSING AND PRESERVATION
Volume 42, Issue 1, Pages -Publisher
WILEY
DOI: 10.1111/jfpp.13335
Keywords
black cumin; fatty acid composition; hazelnut; oil content; peanut; sonication
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Funding
- International Scientific Partnership Program ISPP at King Saud University through ISPP [0015]
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In this study, the effect of different sonication times (10, 20, and 30 min) on oil yields, extracted by using soxhlet together with preultrasonic treatment, and fatty acid composition of seed/kernels were investigated. The sonication of samples for 30 min caused the highest increase in oil yield of hazelnut (from 62.38 to 63.60%) and black cumin (from 27.90 to 31.80%) (p<.05). The appropriate sonication time for oil yield of peanut was 10 min, with the range of 51.50%. After sonication process, the dominant fatty acid contents of all samples showed a change and the major decrease in oleic acid amount of hazelnut (from 75.20 to 74.27%) and peanut oils (from 57.10 to 56.69%) and linoleic acid content of black cumin (from 58.38 to 57.50%) were determined when samples sonicated for 30 min (p<.05). Sonication process caused a decreasing in black cumin oil, and the reduction increased with sonication time. Practical applicationsUltrasound-assisted extraction method can be used as an alternative extraction method for conventional extraction. Ultrasonic-assisted extraction has some advantages as being efficiency, speed and using low temperatures, which prevents thermal damage. The ultrasound process enables to greater influence of solvent into the sample matrix and increases mass transfer. Thereby, the higher extract yield, almost 23%, provided with ultrasonic-assisted extraction in comparison to soxhlet extraction.
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