Rice bran oil extraction using alcoholic solvents: Physicochemical characterization of oil and protein fraction functionality

Capellini, Maria Carolina; Giacomini, Vanessa; Cuevas, Maitê S.; Rodrigues, Christianne Elisabete da Costa

doi:10.1016/j.indcrop.2017.04.017

Cited by 107 publications

(62 citation statements)

References 67 publications

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“…Solvents such as hexane and alcohol are recycled and reused through evaporation/distillation processes or cooling to reduce material cost and minimize environmental and safety issues. 28,29 In the AAEP, after extraction at a certain temperature and subsequent centrifugation, the oil phase and water phase (alcohol-rich phase) formed individually. Thus allowing the direct use of the water phase containing alcohol in the subsequent reaction step.…”

Section: Effects Of Alcohol Concentration and Particle Size On Oil Yimentioning

confidence: 99%

Combination of thermal pretreatment and alcohol‐assisted aqueous processing for rapeseed oil extraction

et al. 2019

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BACKGROUND The alcohol‐assisted aqueous extraction processing (AAEP) of oil has many advantages such as no need for demulsification and relative low cost compared with enzymatic aqueous extraction processing (EAEP). Three kinds of thermal pretreatments including dry‐heating, wet‐heating and soak‐heating followed by the AAEP of rapeseed oil were investigated. RESULTS Both soak‐heating and wet‐heating had a higher contribution rate to oil yield than dry‐heating due to the enhancement of heat transfer rate owing to the high moisture content in the rapeseed cells. However, oil from soak‐heated rapeseeds showed a much lower level on peroxide value (0.41 mmol kg−1) than that of wet‐heated rapeseeds (5.23 mmol kg−1). In addition, transmission electron microscopy images illustrated that promoting effects of soak‐heating and wet‐heating on oil release were attributed to the coalescence of oil bodies. A relative low concentration of alcohol solution as an extraction medium, the highest oil recovery of 92.77% was achieved when ground rapeseeds (mean particle size: 21.23 µm) were treated with 45% (v/v) alcohol for 2 h at 70 °C and pH 9.0. Both the acid value and the peroxide value are lower than the commercial oil produced by extrusion and hexane extraction. Furthermore, the oil produced from AAEP also had higher content of tocopherols and lower content of trans‐fatty acids than the commercial oil. CONCLUSION AAEP of oil from soak‐heated rapeseeds is a promising alternative to conventional oil extraction methods. © 2019 Society of Chemical Industry

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Section: Effects Of Alcohol Concentration and Particle Size On Oil Yimentioning

confidence: 99%

Combination of thermal pretreatment and alcohol‐assisted aqueous processing for rapeseed oil extraction

et al. 2019

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“…Yield minyak bekatul tertinggi didapatkan pada kondisi operasi suhu 60ºC, rasio bahan/pelarut 1:5 waktu ekstraksi 60 menit yaitu 11.34% ditunjukkan oleh Gambar 2 dan 3. Hal ini sesuai dengan penelitian Capellini et al (2017) yang menjelaskan bahwa proses ekstraksi material bahan pangan akan berlangsung lebih cepat pada suhu yang lebih tinggi. Peningkatan suhu mempengaruhi proses sekresi minyak dari bekatul, viskositas, tegangan permukaan dan solubilitas dari pelarut.…”

Section: Suhu ( O C)unclassified

Peningkatan Kecepatan Proses dan Mutu Minyak Bekatul melalui Proses Ekstraksi Berbantukan Ultrasonik

Djaeni

Listyadevi²

2019

TEKNIK

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AbstrakMinyak bekatul adalah salah satu minyak yang telah banyak digunakan dalam industri kimia, farmasi dan makanan mengingat kandungan esensial tinggi seperti antioksidan, vitamin yang baik untuk tubuh. Ekstraksi minyak bekatul berbantukan ultrasonik merupakan salah satu metode yang digunakan untuk mengurangi waktu ekstraksi. Tujuan dari penelitian ini ialah mengkaji pengaruh metode ekstraksi terhadap perpindahan massa minyak bekatul, kualitas antioksidan, dan kualitas minyak bekatul selama proses ekstraksi pada suhu, waktu ekstraksi, dan rasio pelarut yang tepat. Perpindahan massa minyak bekatul dievaluasi berdasarkan pengaruh berbagai suhu, waktu ekstraksi, dan rasio pelarut untuk memprediksi waktu yang tepat untuk mendapatkan minyak bekatul yang banyak. Kualitas kimia (kandungan antioksidan α-tokoferol) serta kualitas fisik (warna minyak) minyak bekatul dikaji sehingga mampu memprediksi suhu, waktu ekstraksi, dan rasio pelarut yang relatif baik. Hasil penelitian menunjukkan yield meningkat seiring dengan bertambahnya suhu dan waktu ekstraksi. Meski demikian nilai antioksidan α-tokoferol akan menurun seiring bertambahnya suhu, waktu ekstraksi dan pelarut. Kondisi operasi yang direkomendasikan untuk mendapatkan yield dan nilai antioksidan yang cukup tinggi adalah pada suhu 40ºC, rasio bahan/pelarut 1:5 dan waktu ekstraksi 51 menit. Abstract [Title: Enhancing The Rate of Process and The Quality of Rice Bran Oil Through The Ultrasonic-Assisted Extraction]Rice bran oil is one of the oils that has been widely used in the chemical, pharmaceutical and food industries considering the high essential content such as antioxidants, vitamins that are good for the body. Extraction of ultrasonic assisted bran oil is one of many method used to reduce extraction time. The purpose of this study was to examine the effect of extraction methods on mass transfer of bran oil, antioxidant quality, and the quality of bran oil during the extraction process at the temperature, extraction time, and the right solvent ratio. Mass transfer of bran oil was evaluated based on the effect of various temperatures, extraction times, and solvent ratios to predict the right time to get a lot of bran oil. Chemical quality (antioxidant content of α-tocopherol) and physical quality (oil color) of bran oil were studied so that they were able to predict temperature, extraction time, and relatively good solvent ratio. The results showed that yield increased with increasing temperature and extraction time. However the antioxidant value of α-tocopherol will decrease with increasing temperature, extraction time and solvent. The recommended operating conditions for obtaining yields and antioxidant values at 40ºC, material to solvent ratio 1: 5 and extraction time for 51 minutes.

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“…3 Unfortunately, this natural resources appears an endogenous enzyme (peroxidase, lipoxygenase, and lipase) which is result of microbial activity during the milling process, and when there is no further process to stabilization or storage of rice bran in room temperature around 6 hours or for long time period, its lead to degradation and transformation of odor and flavors and certainly uncomfortable for human application. 4,5 Microencapsulation is a technology to create a thin film round over the core particle to subtract the core interaction with uncertain environment and obviates chemical reaction. 6 This is an effective tactic to resist the environment situation.…”

Section: Introductionmentioning

confidence: 99%

Formulation and Characterization of Rice Bran Oil in Alginate Microcapsules

Nashihah¹,

Mun’im²,

Sutriyo³

et al. 2018

JYP

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Objective: This study was conducted to evaluate the encapsulated Rice Bran Oil with sodium alginate to improve stability and reduce rancidity by using ionic gelation method. Method: Response Surface Methodology design were used to optimized microcapsule condition. Thirteen formula of Rice Bran Oil microcapsules were prepared in differential ratio and evaluated for physical characteristic, level of γ-oryzanol content, entrapment efficiency, in vitro release of Rice Bran Oil microcapsules. Results: Between all formulas, the ratio of 40:50:10 for Rice Bran Oil, sodium alginate and emulgator respectively, had the highest entrapment efficiency and in the physical characteristic parameter. The microcapsules were in particle range of 580 and 747µm. the in vitro evaluation showed that RBO was release from microcapsules in intestinal simulated digestion (50.64%) for 8 hours.Conclusion: Rice Bran Oil, sodium alginate and emulgator with the ratio of 40:50:10 indicated establish formula to create RBO microcapsules.

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Rice bran oil extraction using alcoholic solvents: Physicochemical characterization of oil and protein fraction functionality

Cited by 107 publications

References 67 publications

Combination of thermal pretreatment and alcohol‐assisted aqueous processing for rapeseed oil extraction

Combination of thermal pretreatment and alcohol‐assisted aqueous processing for rapeseed oil extraction

Peningkatan Kecepatan Proses dan Mutu Minyak Bekatul melalui Proses Ekstraksi Berbantukan Ultrasonik

Formulation and Characterization of Rice Bran Oil in Alginate Microcapsules

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