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A Box–Behnken design for optimization of ultrasound‐assisted solvent extraction of hazelnut oil
Author(s) -
Geow Chin Hong,
Tan Mei Ching,
Yeap Swee Pin,
Chin Nyuk Ling
Publication year - 2018
Publication title -
journal of food processing and preservation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.511
H-Index - 48
eISSN - 1745-4549
pISSN - 0145-8892
DOI - 10.1111/jfpp.13743
Subject(s) - extraction (chemistry) , yield (engineering) , response surface methodology , solvent , sonication , box–behnken design , chromatography , hexane , ultrasound , fourier transform infrared spectroscopy , pulp and paper industry , chemistry , materials science , microbiology and biotechnology , chemical engineering , organic chemistry , medicine , biology , composite material , engineering , radiology
This study aims to increase the hazelnut oil yield using ultrasound as initial treatment in hexane solvent extraction. A Box–Behnken design was applied to optimize the ultrasound amplitude (30%, 60%, and 90%), solvent to solid ratio (6:1, 8:1, and 10:1) and extraction temperature (28, 38, and 48°C). The results showed that increasing all these variables would increase the oil yield. The oil extraction were optimum at 90% ultrasound amplitude, 10:1 solvent to solid ratio, and 48°C of extraction temperature. Effect of extraction time on oil yield was studied at optimum conditions. The maximum oil yield was achieved at 75 min of extraction time with 15‐min initial sonication. The maximum oil yield in ultrasound‐assisted extraction was around 88%. Ultrasound treatment had increased 4% of oil yield from the control. Fourier‐transform infrared spectroscopy results showed that the extracted hazelnut oil has the similar functional groups as other edible oils. Practical applications Hazelnut oil is one of the edible oils that widely been used in food processing. Besides, hazelnut oil has specific contribution in addressing health issues, where it can reduce cholesterol level in human body. This research introduces the optimized extraction process on hazelnut oil to the food manufacturer. With the presence of ultrasound treatment, hazelnut oil can be extracted in shorter time. Therefore, it tends to introduce low cost and healthy hazelnut oil to the consumer.