High pressure pre-treatment of Moringa oleifera seed kernels prior to aqueous enzymatic oil extraction

Yusoff, Masni Mat; Gordon, Michael H.; Ezeh, Onyinye; Niranjan, Keshavan

doi:10.1016/j.ifset.2016.11.014

Cited by 26 publications

(19 citation statements)

References 30 publications

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“…Several parameters can be optimized to maximize recovery, including the seeds' size, moisture content, applied pressure, and temperature [89]. Aqueous enzymatic extraction has also been approached with positive outcomes, with up to 70% oil recovery [90,91], with easier phase separation efficiency when kernels are previously submitted to high pressure treatments, an increasingly common technique in the food industry [92]. One report on cold extraction of M. stenopetala seeds, variety Marigat, gave 35.7% of oil [64], which corresponds to an efficiency superior to 79%.…”

Section: Oil Extraction and Applicationsmentioning

confidence: 99%

The Potential of Some Moringa Species for Seed Oil Production

2018

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There is an increasingly demand for alternative vegetable oils sources. Over the last decade there has been fast growing interest in Moringa oleifera Lam., particularly due to its high seed oil yield (30-40%), while other Moringa species with similar potentialities are reducing their representativeness worldwide. This review reinforces the interesting composition of Moringa oil, rich in oleic acid and highly resistant to oxidation, for industrial purposes, and shows that other Moringa species could also be exploited for similar purposes. In particular, Moringa peregrina (Forssk.) Fiori has an interesting oil yield and higher resistance to pest and diseases, and Moringa stenopetala (Bak. f.) Cuf. is highlighted for its increased resistance to adverse climate conditions, of potential interest in a climate change scenario. Exploring adapted varieties or producing interspecies hybrids can create added value to these less explored species, while renewing attention to endangered species. Moringa seed oil can be extracted by conventional methods or using physical methods (pressing), creating diverse products from a compositional perspective, able to serve both the biodiesel and food industries.

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Section: Oil Extraction and Applicationsmentioning

confidence: 99%

The Potential of Some Moringa Species for Seed Oil Production

2018

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“…Enzymatic aqueous extraction employs enzymes that hydrolyze and break cell walls of the material, making the structure more permeable and further exposing the oil component [28,29].…”

Section: Introductionmentioning

confidence: 99%

Aqueous Enzymatic Extraction of Buriti (Mauritia Flexuosa) Oil: Yield and Antioxidant Compounds

Silva¹,

Rodrigues²,

Silva³

2019

TOFSJ

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Introduction:Enzyme-assisted aqueous extraction is considered an emerging green technique that has been applied to different oilseeds. Objective:This study aimed to study the enzymatic aqueous extraction process of buriti oil using a central composite rotatable design (CCRD) combined with the response surface methodology aiming to obtain higher yield and antioxidant compounds in the oil. Methods:The study was carried out in two steps. The first assessed the efficiency of different enzymes (cellulase, pectinase, and protease) and the variables of greater influence in the extraction process, being conducted for each enzyme a CCRD design. The second step was carried out with the enzyme that showed the best performance on the extraction yield, changing the experimental bands of the variables that had greater significance in the first step, with the goal of broadening the spectrum of study. Were also evaluated in this step, total carotenoids, total phenolic compounds, and the antioxidant capacity of the oils extracted. Results:In the first experiment, cellulase gave the highest yield, while the most significant variables were temperature and time. For the second design, performed with cellulase, were defined as optimal operating conditions at 55 °C temperature, 2% enzyme concentration and 6 hours extraction. For these conditions, the yield obtained was 76.5%, with total carotenoid concentration of 3,119.5 µg β-carotene.g -1 . Analysis of variance was performed and showed the significance of the regression and non-significance of the lack-of-fit (p<0.05). The coefficients of determination of the yield and carotenoid content were 95.6% and 94.5%, respectively. The highest value of total phenolic compounds determined for buriti oil in this study was 254 ± 5 µg GAE.g -1 oil, while for the antioxidant capacity was 218.0 ± 0.3 µmol Trolox.g -1 oil. Conclusion:The enzymatic aqueous extraction process is viable for buriti oil and produced oils with high concentrations of antioxidant compounds.

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“…All oil extraction methods conducted in this study were based on studies done by Mat Yusoff et al . (2016, 2017), and were performed on the ground‐sieved MO kernels.…”

Section: Methodsmentioning

confidence: 99%

“…In the case of MO kernels, Mat Yusoff et al . (2017) reported that the HPP pre‐treatment successfully modified the MO protein structure into a form with less emulsifying ability; thus a smaller amount of oil was emulsified, which resulted in a thinner cream emulsion layer and 4.19% (w/w) higher free oil recovery as compared to the use of AEE alone . The study also reported a 4.98% (w/w) increase in free oil recovery when the AEE was pre‐treated by boiling (100 °C, 5 min) – this boiling pre‐treatment was conducted in earlier studies prior to an AEE of MO oil to inactivate the natural hydrolytic enzymes in the seed kernels …”

Section: Introductionmentioning

confidence: 99%

“…However, the effect of the storage of MO oil at different temperatures on its quality attributes had never been reported, which is of great importance in determining the shelf life of the oil. Furthermore, to the best of our knowledge, the study on HPP pre‐treatment prior to AEE of MO oil was conducted for the first time, and no study has reported on the quality attributes of the MO oil extracted from this process.…”

Section: Introductionmentioning

confidence: 99%

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Oxidative properties of Moringa oleifera kernel oil from different extraction methods during storage

et al. 2019

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BACKGROUND: Moringa oleifera (MO) kernel oil is categorized as a high-oleic oil that resembles olive oil. However, unlike olive trees, MO trees are largely present in most subtropical and tropical countries. In these countries, therefore, the benefits of oleic acid can be obtained at a cheaper price through the consumption of MO kernel oil. This study reports on the effect of different extraction methods on oxidative properties of MO kernel oil during storage for 140 days at 13, 25, and 37 ∘ C. RESULTS: All aqueous enzymatic extraction (AEE)-based methods generally resulted in oil with better oxidative properties and higher tocopherol retention than the use of solvent. Prior to AEE, boiling pre-treatment deactivated the hydrolytic enzymes and preserved the oil's quality. In contrast, high-pressure processing (HPP) pre-treatment accelerated hydrolytic reaction and resulted in an increase in free fatty acids after 140 days at all temperatures. No significant changes were detected in the oils' iodine values and fatty acid composition. The tocopherol content decreased significantly at both 13 and 25 ∘ C after 60 days in the oil from SE method, and after 120 days in oils from AEE-based methods.CONCLUSION: These findings are significant in highlighting the extraction methods resulting in crude MO kernel oil with greatest oxidative stability in the storage conditions tested. Subsequently, the suitable storage condition of the oil prior to refining can be determined. Further studies are recommended in determining the suitable refining processes and parameters for the MO kernel oil prior to application in variety food products. Aqueous enzymatic extraction with high pressure processing pre-treatment (HPP-AEE)The ground-sieved MO kernels were mixed with distilled water at a 1:1 (w/w) ratio and vacuum sealed in polyethylene bags. According to Mat Yusoff et al. (2017), 21 some preliminary tests were carried out to determine the solid-to-liquid ratio. The use of a smaller amount of water caused the formation of a very thick paste, which adhered to the polyester bag, thus wasting some of the sample. The addition of a higher water content resulted in a very dilute mixture, which thus allowed only a small amount of ground-sieved MO kernel to be processed at one time.The mixtures at 1:1 (w/w) ratio were treated with high pressure (Stansted Fluid Powder Ltd, Stansted, UK) at 50 MPa and 60 ∘ C for 35 min, followed by addition of distilled water up to 4:1 water / kernel (w/w) ratio for the subsequent AEE, as in the earlier section. The recovery of the free oil is explained in the next section.

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High pressure pre-treatment of Moringa oleifera seed kernels prior to aqueous enzymatic oil extraction

Cited by 26 publications

References 30 publications

The Potential of Some Moringa Species for Seed Oil Production

The Potential of Some Moringa Species for Seed Oil Production

Aqueous Enzymatic Extraction of Buriti (Mauritia Flexuosa) Oil: Yield and Antioxidant Compounds

Oxidative properties of Moringa oleifera kernel oil from different extraction methods during storage

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