Oil Extraction from “Morelos Rice” Bran: Kinetics and Raw Oil Stability

Zuñiga-Díaz, J.; Reyes-Dorantes, E.; Quinto-Hernandez, Alfredo; Porcayo-Calderón, J.; Martínez-Gómez, L.

doi:10.1155/2017/3837506

Cited by 16 publications

(22 citation statements)

References 36 publications

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“…In both cases, the plateaus correspond to the saturation of the deionized water due to both CO 2 and O 2 absorption and the oxidation products dissolution, respectively. Then, the interception of the tangent of the first plateau with the tangent of the second slope corresponds to the stability time of the biodiesel [41]. According to this, it can be observed that the oxidative stability of biodiesel was 23.6, 16.2, and 7.3 hours at 80, 110, and 140 ∘ C, respectively.…”

Section: Biodiesel Oxidative Stabilitymentioning

confidence: 78%

“…Moisture (water) tends to condense on the metal surfaces that contain it and causes their deterioration due to metallic corrosion. In addition, the reaction products of the biodiesel oxidation process (aldehydes, ketones, lactones, and organic acid compounds) considerably increase the biodiesel's corrosivity [41,47]. The corrosivity of biodiesel on different metallic materials has been evaluated both by electrochemical techniques and by mass loss tests.…”

Section: Biodiesel Corrosivitymentioning

confidence: 99%

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Biodiesel from “Morelos” Rice: Synthesis, Oxidative Stability, and Corrosivity

Zuñiga-Díaz

Reyes-Dorantes

Quinto-Hernandez

et al. 2018

Journal of Chemistry

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Rice bran is a by-product of great production worldwide and its use for the synthesis of biodiesel does not affect the food chain and therefore it is an excellent alternative for the production of biofuels with low carbon footprint. In this work, the synthesis of biodiesel was carried out from the raw rice bran oil of a kernel variety called “Morelos rice.” The stability and corrosivity characteristics of biodiesel were determined. Biodiesel stability was determined both under storage conditions and under accelerated oxidation conditions, and its corrosivity was evaluated by electrochemical impedance spectroscopy at 110°C under aerated conditions. The results showed that, due to the high instability of the rice bran, its raw oil had a high content of free fatty acids. The synthesized biodiesel showed excellent stability under storage conditions of up to five months, and its oxidative stability was much higher than that established in international standards. On the other hand, biodiesel showed low corrosivity and this was only significant once oxidative degradation began.

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Section: Biodiesel Oxidative Stabilitymentioning

confidence: 78%

Section: Biodiesel Corrosivitymentioning

confidence: 99%

Biodiesel from “Morelos” Rice: Synthesis, Oxidative Stability, and Corrosivity

Zuñiga-Díaz

Reyes-Dorantes

Quinto-Hernandez

et al. 2018

Journal of Chemistry

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“…The FTIR spectrum analysis showed the main characteristic signals, such as: a peak at 3007 cm −1 attributed to the stretching vibration of cis -olefin double bonds (=C–H), an asymmetric stretch band of methylene at 2925 cm −1 , a symmetric stretch band of methylene at 2854 cm −1 , the band corresponding to the group C=O of the triglycerides at 1746 cm −1 , the band corresponding to the group CH 2 at 1462 cm −1 , and the stretch corresponding to –COO at 1163 cm −1 . This was in addition to other signals, such as the one at 723 cm −1 due to the overlap of the methylene equilibrium vibration, and the flexural vibration outside the plane of the cis -disubstituted olefins (HC=CH–) [34,35,36,37].…”

Section: Resultsmentioning

confidence: 94%

Synthesis of NdAlO3 Nanoparticles and Evaluation of the Catalytic Capacity for Biodiesel Synthesis

et al. 2019

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Biodiesel synthesis was carried out via heterogeneous catalysis of canola oil with nanoparticles of a mixed oxide based on rare earths. The catalyst synthesis (NdAlO3) was carried out based on the method proposed by Pechini for the synthesis of nanoparticles. Thermogravimetric analysis-differential thermal analysis (TGA-DTA) analysis was performed on the nanoparticle precursor gel in order to establish the optimum conditions for its calcination, with these being of 800 °C over 24 h. A pure NdAlO3 compound with an approximate size of 100 nm was obtained. The products of the transesterification reaction were analyzed using gas chromatography, FTIR, and NMR. The optimum reaction conditions were determined, namely, the temperature effect, reaction time, methanol:oil mass ratio, and recyclability of the catalyst. These studies showed the following optimal conditions: 200 °C, 5 h, methanol:oil mass ratio of 6:1, and a constant decrease in the catalytic activity of the catalyst was observed for up to six reuses, which later remained constant at around a 50% conversion rate. The maximum biodiesel yield obtained with the optimum conditions was around 75%. Analysis of the reaction products showed that the residual oil showed a chemical composition different from that of the source oil, and that both the biodiesel and glycerol obtained were of high purity.

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“…The control oleogel (CR1) showed a sharp signal at 3005 cm −1 in the spectrum, which can be attributed to the stretching vibration of cis olefinic double bonds (=C–H) [ 47 ]. The peaks obtained at 2922 cm −1 and 2852 cm −1 were due to the asymmetrical and symmetrical stretching vibration of methylene (–CH 2 ) groups in the fatty acid molecules [ 47 ]. The carbonyl (–C=O) stretching vibration of the ester bond was evident from the peak observed at 1742 cm −1 [ 48 ].…”

Section: Resultsmentioning

confidence: 99%

Graphene Oxide Increases Corneal Permeation of Ciprofloxacin Hydrochloride from Oleogels: A Study with Cocoa Butter-Based Oleogels

Qureshi

Choudhary

Mohanty³

et al. 2020

Gels

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In this work, oleogels of cocoa butter (CB), rice bran oil (RBO), and graphene oxide (GO) were prepared. The prepared oleogels were subjected to various characterization techniques such as bright-field microscopy, X-ray diffraction (XRD), crystallization kinetics, differential scanning calorimetry (DSC), and mechanical studies. The influence of increasing GO content on the in vitro drug release and ex vivo corneal permeation of the model drug (ciprofloxacin HCl—CPH) from the oleogels was also investigated. Bright-field micrographs showed that increment in GO content reduced the size of the globular particles of CB. XRD analysis revealed that CB was crystallized in its β’ and β polymorphic forms in the oleogels, which was in agreement with thermal studies. The mechanical characterization demonstrated that the presence of GO improved the elastic nature and stress-bearing properties of the oleogels. Moreover, GO altered the crystallization kinetics of CB in the oleogels in a composition-dependent manner. The in vitro release of CPH from the oleogels occurred through either Fickian diffusion or fat network relaxation or a combination thereof. Furthermore, the inclusion of GO enhanced the ex vivo permeation of CPH molecules across the caprine cornea. Hence, we concluded that the prepared oleogels could be explored as potential delivery systems for ophthalmic applications.

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Oil Extraction from “Morelos Rice” Bran: Kinetics and Raw Oil Stability

Cited by 16 publications

References 36 publications

Biodiesel from “Morelos” Rice: Synthesis, Oxidative Stability, and Corrosivity

Biodiesel from “Morelos” Rice: Synthesis, Oxidative Stability, and Corrosivity

Synthesis of NdAlO3 Nanoparticles and Evaluation of the Catalytic Capacity for Biodiesel Synthesis

Graphene Oxide Increases Corneal Permeation of Ciprofloxacin Hydrochloride from Oleogels: A Study with Cocoa Butter-Based Oleogels

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