Effects of different extraction methods on the physicochemical properties and storage stability of tiger nut (Cyperus esculentus L.) oil

An Innovative Strategy of Comprehensive Utilization of Tiger Nuts (Cyperus esculentus L.): Simultaneous Extraction of Oil and Glucose Syrup by Amylolysis-assisted Aqueous Extraction Process

“…extraction of the solvent extraction method (100.00%), it is signi cantly better than the pressing extraction method (56.80%), which is consistent with the results of(Zhang et al 2023a). The acid value and peroxide value of the oil extracted by AAEP are comparable to those obtained using the other two methods, with values of 3.16 ± 0.05 (mg KOH/g of oil) and 5.16 ± 0.06 (meq/kg), respectively, as these indices are dependent on the raw material source.…”

Tiger nut (Cyperus esculentus L.) oil: A review of bioactive compounds, extraction technologies, potential hazards and applications

“…However, thermal treatments should also be controlled, because excessive heating might result in the superheating and the carbonization of plant materials, and a poor oil extraction yield ( Liu et al, 2018 ). Zhang et al (2023) found that the tiger nut oil yield of pressing after heat treatment at 180 °C for 20 min was lower than that of the cold pressing. The authors suggested that this might be due to the changes of starch structure caused by the dextrinization and Maillard reactions at high temperatures, which made the starch bind more tightly to the oil and restrict the free migration of the oil.…”

“…The content of β-tocopherol in tiger nut oil was 27.8–74.3 mg kg −1 , which was significantly higher than that of other vegetable oils. The contents of δ-tocopherol and γ-tocopherol in tiger nut oil were both very low ( Ezeh et al, 2016 , Fine et al, 2016 , Guo et al, 2021 , Hu et al, 2018 , Qian et al, 2022 , Zhang et al, 2023 , Zhang et al, 2022 ). However, Aljuhaimi et al (2018) found that one tiger nut oil with relative high levels of γ-tocopherol and δ-tocopherol was found in Turkey, ranging from 342.7 to 364.4 mg kg −1 and 507.7–549.1 mg kg −1 , respectively.…”

“…Alkaline protease, widely used in some oilseeds, was also applied to the extraction of tiger nut oil. However, the oil yield was only 14.6 g 100 g −1 ( Zhang et al, 2023 ). The reason for the low oil yield may be due to the low protein content of tiger nut, and the single protease enzyme can’t completely destroy the cell structure, thus limiting the release of oil.…”

Physicochemical Characteristics, Inhibition of Lipid Peroxidation, and Oxidative Stability Index by Antioxidant Alternatives of Promising Binary Oil Blend (Canola and Olive oils)

“…The presence of pigments like lutein, chlorophyll, and carotenoids that move from oil seeds is what gives most vegetable oils their colour. These pigments are quickly converted during storage to coloured or colourless products, changing the colour of the oil (Zhang et al, 2023;Alonso-Salces et al, 2021).…”