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Process optimisation of microwave‐assisted extraction of peony ( Paeonia suffruticosa Andr .) seed oil using hexane–ethanol mixture and its characterisation
Author(s) -
Sun Xiaoli,
Li Wengang,
Li Jian,
Zu Yuangang,
Hse ChungYun,
Xie Jiulong,
Zhao Xiuhua
Publication year - 2016
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/ijfs.13255
Subject(s) - paeonia suffruticosa , extraction (chemistry) , hexane , chemistry , yield (engineering) , solvent , chromatography , dpph , ethanol , acid value , antioxidant , botany , materials science , organic chemistry , biochemistry , biology , metallurgy
Summary Ethanol and hexane mixture agent microwave‐assisted extraction ( MAE ) method was conducted to extract peony ( Paeonia suffruticosa Andr .) seed oil ( PSO ). The aim of the study was to optimise the extraction for both yield and energy consumption in mixture agent MAE . The highest oil yield (34.49%) and lowest unit energy consumption (14 125.4 J g −1 ) were obtained under optimum extraction condition: solid‐liquid ratio 0.37 g mL −1 , extraction time 3.72 min, extraction temperature 80.92 °C, ethanol ratio 20.00%. GC – MS results showed that unsaturated fatty acids ( UFA s) accounted for 88.60% of total fatty acids in PSO . Moreover, linolenic acid content of 37.35% was the highest UFA and caused PSO to possess good nutrition. PSO in DPPH radical scavenging experiment showed that IC 50 value of 28.80 ± 2.13 mg mL −1 exhibited strong antioxidant property. All experiments proved that mixed solvent MAE is an efficient and promising method to extract PSO . This method can effectively reduce the energy consumption and extraction time.