Changes in physicochemical properties of cold press extracted oil from Balangu (Lallemantia peltata) seeds during storage

Naebi, Maryam; Torbati, Mohammadali; Azadmard‐Damirchi, Sodeif; Siabi, Shahla; Savage, Geoffrey P.

doi:10.1016/j.jfca.2021.104358

Cited by 20 publications

(16 citation statements)

References 29 publications

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“…Direct oxidation of these pigments and or interactions of oxidized triglycerides with carotenoid compounds may lead to oil darkening [ 45 ]. Pigments contribute to an off-flavor and may also act as photosensitizers and catalyze the oxidation of the vegetable oil in the presence of light, thus diminishing its storage stability [ 46 ]. Therefore, one of the major industrial concerns in the refining process is to diminish pigment molecules in crude oils.…”

Section: Resultsmentioning

confidence: 99%

Loss in the Intrinsic Quality and the Antioxidant Activity of Sunflower (Helianthus annuus L.) Oil during an Industrial Refining Process

2022

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Minor compounds in vegetable oils are of health interest due to their powerful biological antioxidant properties. In order to extend the shelf life of sunflower oil, it is generally subjected to a refining process that can affect these desirable compounds. The main purpose of this study was to determine the effect of this chemical/physical refining process on selected minor components of sunflower oil in order to establish the nutritional quality and health properties of the oil. The oxidative stability, contents of fatty acids, tocopherols, phytosterols, reducing capacity, β-carotene, chlorophyll, and squalene were studied during six refining steps. Quantitative data showed the evolution of oil quality according to its degree of refinement. The results showed a significant decrease for all of the minor compounds analyzed, with losses in carotenoids of 98.6%, 8.5% in tocopherols, 19.5% in phytosterols and 45.0% in squalene. The highest reductions were recorded for the compounds that alter the most the visual aspects of the oil (waxes, carotenoids and chlorophylls) whereas reduction was limited for the compounds with no impact on the organoleptic quality. The losses in the compounds of health interest should be minimized by improving the refining processes and/or having a greater content of those molecules in crude oil by breeding new performing varieties.

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Section: Resultsmentioning

confidence: 99%

Loss in the Intrinsic Quality and the Antioxidant Activity of Sunflower (Helianthus annuus L.) Oil during an Industrial Refining Process

2022

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“…It has been reported that a heating process by temperature 75 °C and moisture content of output seeds in the confine of 6.3-6.5% have yielded the highest extraction efficiency that resulted in high-quality oil production and by-products with the minimum remaining oil content according to the previous studies (Rostami et al, 2014). Also, Naebi et al (2022) declared that the optimum moisture content which gave the highest oil yield (33.5%) was 7.5%. The extracted PSO main fatty acids were punicic acid (C18:3) up to 76% as the main fatty acid followed by linoleic acid (C18:2) about 8.2%, oleic acid (C18:1) about 7.6%, palmitic acid (C16:0) about 4.6% and stearic acid (C18:0) about 2.6% (Khoddami et al, 2014).…”

Section: Extraction Yieldmentioning

confidence: 92%

“…The extraction yield in the cold-press extraction method is affected mainly by the temperature and also moisture content of the seed (Naebi et al, 2022). The effects of the incorporation of green tea leaves on the extraction yield of PSO were evaluated during the mechanical press.…”

Section: Extraction Yieldmentioning

confidence: 99%

Effect of co-extraction of pomegranate seed oil with green tea leaves on the extraction yield and quality of extracted oil

Dezashibi

Azadmard‐Damirchi

Piravi‐Vanak

2022

OCL

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Co-extraction of pomegranate seed oil (PSO) with green tea leaves (GTL) (0 [control sample], 2.5, 5, 7.5, and 10% w/w) was conducted by cold-press to evaluate the extracted oil quality during storage. The extraction yield was similar to the control sample up to 5% w/w of GTL. Total phenol and chlorophyll content were increased in the extracted oils with increasing the level of GTL. The acid and peroxide values were increased during the storage and the lowest values were achieved for PSO with 5% GTL. Rancimat analysis also confirmed the PV results, therefore using 5% GTL led to providing the highest induction period (11.5 h). Consequently, using 5% of GTL during the extraction of PSO by cold-press could result in an appropriate extraction yield and also present higher oxidation stability. This method does not need any antioxidant extraction from herbs and is very cost-effective, time-efficient, and uses no chemicals.

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“…Moreover, the lower saponification value of L. cubeba fruit oil could be explained by its impurity and fatty acid composition (i.e., more palmitic acid and less lauric acid). Cold pressing seems to preserve more phenolic compounds in L. cubeba kernel and fruit oils, which is beneficial to oil stability [ 36 ]. However, their higher acid values and peroxide values, as well as the variation in melting and crystallization properties, should be taken into consideration for further refining to widen its industrial application.…”

Section: Resultsmentioning

confidence: 99%

Sustainable Valorization of Litsea cubeba (Lour.) Pers. Residue as the New Lauric Oil Source Using Alternative Green Extraction and Refining Methods

Zhuang

et al. 2022

Foods

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Litsea cubeba is an ethnic woody oil plant, in which essential oil rather than oil has been the main foreign trade product through the decades. Concerning large amounts of residue generated from L. cubeba essential oil processing, a sustainable valorization pathway of these biowastes is proposed in this study. First, such biowastes have been systematically investigated for the first time regarding their oils extracted by three extraction methods, where ultrasound-assisted extraction (UAE) could significantly improve the extraction rate of traditional pressing and solvent extraction without any changes in oil quality. Moreover, the composition of acylglycerols and fatty acids in L. cubeba fruit, kernel, and peel oils were also first identified, which further proved that peels with abundant free fatty acids could lead to high acid value of L. cubeba fruit oils. Compared to virgin coconut oils, L. cubeba kernel oils have a more balanced fatty acid composition with a high lauric acid level, which could be applied as a promising lauric oil resource. Considering the high acid value in L. cubeba kernel oils, both decoloration using activated clay and alkali deacidification were attempted, where the combination of alkali deacidification and 10% of activated clay performed the best considering both quality and cost.

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Changes in physicochemical properties of cold press extracted oil from Balangu (Lallemantia peltata) seeds during storage

Cited by 20 publications

References 29 publications

Loss in the Intrinsic Quality and the Antioxidant Activity of Sunflower (Helianthus annuus L.) Oil during an Industrial Refining Process

Loss in the Intrinsic Quality and the Antioxidant Activity of Sunflower (Helianthus annuus L.) Oil during an Industrial Refining Process

Effect of co-extraction of pomegranate seed oil with green tea leaves on the extraction yield and quality of extracted oil

Sustainable Valorization of Litsea cubeba (Lour.) Pers. Residue as the New Lauric Oil Source Using Alternative Green Extraction and Refining Methods

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