scholarly journals Model development to enhance the solvent extraction of rice bran oil

OCL ◽  
2019 ◽  
Vol 26 ◽  
pp. 16
Author(s):  
Fajriyati Mas’ud ◽  
Fajar ◽  
Herman Bangngalino ◽  
Sri Indriati ◽  
Abigael Todingbua ◽  
...  
Keyword(s):  
Vitamin E ◽  
Rice Bran ◽  
Ethanol Concentration ◽  
Rice Bran Oil ◽  
Model Development ◽  
Oil Yield ◽  
Green Solvent ◽  
Optimum Conditions ◽  
Central Composite ◽  
3D Surfaces

Rice bran oil (RBO) extraction with ethanol using maceration method accompanied by stirring has been optimized using response surface methodology (RSM) based on central composite design (CCD). Experiments were conducted to investigate the influence of extraction time, ethanol concentration, and ethanol volume on the oil yield, γ-oryzanol, and vitamin E of RBO as the response. The experiment consisted of twenty units including six replicates of the center points. The data were analyzed using Design-Expert 10 software to develop and evaluate models and to plot the response curve as 3D surfaces. The result showed that the maximum of the oil yield, γ-oryzanol, and vitamin E of RBO was achieved under the optimum conditions of x1 = 5.30 h, x2 = 89.21% and x3 = 686.66 mL (50 g rice bran), respectively. Maximum of the response under these conditions was 14.47%, 783.65 mg.L−1, and 127.01 mg.L−1, respectively. This study has resulted in the development of a model for RBO extraction using ethanol as solvent, it is feasible to be applied to the RBO industry with an efficient process, as well as an implementation of the “green” solvent concept.

scholarly journals Effect of Bran Roasting Temperature and Time on Yield and Quality Attributes of Rice Bran Oil

2011 ◽  
Vol 54 (2) ◽  
pp. 106-110
Author(s):  
James Abiodun Adeyanjua ◽  
Emmanuel Adedapo Akande ◽  
Rahman Akinoso
Keyword(s):  
Rice Bran ◽  
Rice Bran Oil ◽  
Quality Attributes ◽  
Oil Yield ◽  
Optimum Conditions ◽  
Chemical Parameters ◽  
Yield And Quality ◽  
Peroxide Values ◽  
Physico Chemical ◽  
Roasting Temperature

The effects of bran roasting temperature (160-200) °C and time (5-35 min) on the yield and quality attributes of 'Ofada' rice bran oil were studied so as to optimize the processing conditions for maximum oil yield with least deterioration of qualities. The physico-chemical parameters of oil studied included: yield, free fatty acids, peroxide value and colour, which were recorded as 14.50%, 5.80% (as oleic), 8.25 meq / kg and 1.51 abs, respectively. The optimum conditions were 200 °C roasting temperature and 15 min roasting time. With increasing the roasting temperature from 160-200 °C and the time 5-35 min, the oil yield and colour increased 11.31-14.50% and 1.51-1.58 abs, respectively, while free fatty acid and peroxide values decreased from 12.75-5.80% and 13.75-8.25 meq / kg, respectively.

scholarly journals Optimasi Konsentrasi Etanol Dan Perbandingan Bahan Dengan Etanol Terhadap Aktivitas Antioksidan Ekstrak Daun Beluntas (Pluchea Indica Less) Menggunakan Response Surface Methodology (RSM)

2021 ◽  
Vol 10 (1) ◽  
pp. 1
Author(s):  
I Gusti Ngurah Bagus Pranantha Bistara K ◽  
I Ketut Suter ◽  
Gusti Ayu Kadek Diah Puspawati
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Ethanol Concentration ◽  
Dry Weight ◽  
Total Flavonoid Content ◽  
Optimum Conditions ◽  
Flavonoid Content ◽  
Tannin Content ◽  
Two Factors ◽  
Central Composite

The research was conducted to obtain the optimum of ethanol concentration and comparison of material with ethanol to produced beluntas leaves extract that had the highest antioxidant activiy. Response Surface Methodology (RSM) was used for optimization of extraction conditions with experimental design was a Central Composite Design (CCD) in two factors, namely ethanol concentration and comparison of material with ethanol. The results showed that the optimum conditions of beluntas leaves extraction were at ethanol concentration 62.71% and the comparison of material with ethanol 1:10.14. In this condition, the highest antioxidant activity was obtained at 65.80% with IC50, extract yield, total flavonoid content, and total tannin content were 3.87 ppm, 18.20% dry weight extract, 47.05 mg QE/g dry weight extract, and 9.11 mg TAE/g dry weight extract, respectively.

scholarly journals Effect of Solvents and Extraction Conditions on the Properties of Crude Rice Bran Oil

2021 ◽  
Vol 18 (17) ◽  
Author(s):  
Benchamaporn PIMPA ◽  
Chakree THONGRAUNG ◽  
Pornpong SUTTHIRAK
Keyword(s):  
Fatty Acids ◽  
Rice Bran ◽  
Iodine Value ◽  
Rice Bran Oil ◽  
Oil Extraction ◽  
Optimum Conditions ◽  
Hexane Extraction ◽  
Ethanol Extraction ◽  
Effect Of Solvents ◽  
Saponification Value

This research aimed to study the effect of solvents, namely n-hexane and ethanol, on the yield of crude rice bran oil extraction. The effects of extraction temperatures of 50, 60, and 70 ºC and extraction times of 1, 3, 6, 12, and 24 h were investigated. Rice bran composition was determined. It was found that protein, lipid, moisture, fiber, ash, and carbohydrate content were 12.65±0.56, 16.32±0.81, 7.65±0.62, 10.25±0.64, 6.38±0.59, and 46.75 %, respectively. From the results, the rice bran oil yield from n-hexane extraction was significantly higher than ethanol extraction, with p < 0.05. The maximum rice bran oil obtained from n-hexane extraction was 16.23±0.34 %. The highest yield of rice bran oil was obtained from extraction temperature of 60 - 70 ºC for 12 - 24 h. After extraction by the optimum conditions at 60 ºC for 12 h, the rice bran oil was kept for 1, 2, 3, 4, and 8 weeks for investigation of its quality changes. It can be concluded that the optimum conditions for rice bran oil extraction was with using n-hexane as a solvent for extraction at a temperature of 60 ºC for 12 h. Storing oil for 0, 1, 2, 4, and 8 weeks resulted in the increase of free fatty acids (FFA) and peroxide value, whereas iodine value and saponification value were relatively constant. HIGHLIGHTS n-Hexane and ethanol effect the yield of crude rice bran oil extraction The rice bran oil yield from n-hexane extraction was higher than ethanol extraction The optimum conditions for rice bran oil extraction were with using n-hexane as a solvent for extraction at a temperature of 60 ºC for 12 h Storing rice bran oil for 8 weeks resulted in the increase of free fatty acids (FFA) and peroxide value, whereas iodine value and saponification value were relatively constant

Microwave-Assisted Extraction of Soybean and Rice Bran Oil: Yield and Extraction Kinetics

2011 ◽  
Vol 54 (4) ◽  
pp. 1387-1394 ◽  
Author(s):  
A. Kanitkar ◽  
C. M. Sabliov ◽  
S. Balasubramanian ◽  
M. Lima ◽  
D. Boldor
Keyword(s):  
Rice Bran ◽  
Rice Bran Oil ◽  
Oil Yield ◽  
Microwave Assisted Extraction ◽  
Extraction Kinetics ◽  
Microwave Assisted ◽  
Assisted Extraction

scholarly journals Ekstraksi Asam Lemak Bebas dari Minyak Dedak Padi Menggunakan Etanol-Air dalam Tangki Pengaduk

REAKTOR ◽  
2017 ◽  
Vol 17 (3) ◽  
pp. 166
Author(s):  
I Dewa Gede Arsa Putrawan ◽  
Rizkyanto Nugroho ◽  
Reza Anggara
Keyword(s):  
Mass Transfer ◽  
Fatty Acid ◽  
Free Fatty Acid ◽  
Transfer Coefficient ◽  
Mass Transfer Coefficient ◽  
Rice Bran ◽  
Ethanol Concentration ◽  
Rice Bran Oil ◽  
Stirred Tank ◽  
Feed Ratio

Abstract EXTRACTION OF FREE FATTY ACID FROM RICE BRAN OIL USING ETHANOL-WATER IN A STIRRED TANK. This research was aimed to study the extraction of free fatty acid (FFA) from rice bran oil (RBO) in a stirred tank. Fatty acid mixtures derived from RBO were used as FFAs and aqueous ethanol as solvent. First, the distribution coefficients of FFAs were measured through equilibrium experiments. The experiments were carried at 25°C with ethanol concentration in the solvent and FFA concentration in RBO in the ranges of 85-95%-w and 10-30%-w, respectively. In general, the distribution coefficient of FFA was linearly dependent on ethanol concentration. A constant distribution coefficient of 0.9 for FFA RBO, however, is a fairly acceptable assumption with a deviation range of 20-30%. In addition, FFA mixtures in RBO could be represented by a pseudo-component. Extraction experiments were proposed to measure the mass transfer coefficient of FFA, with experimental variations including solvent to feed ratio, ethanol concentration in the solvent, stirring rate, and FFA concentration in RBO. The mass transfer coefficient was in the range of (0.5-1.9)10-3 kg·m-2·s-1. Increasing solvent to feed ratio, ethanol concentration in the solvent, stirring rate, or FFA concentration in RBO increased mass transfer coefficient. The mass transfer coefficient data could be correlated well using the dimensionless equation of Skelland-Xien. Keywords: free fatty acid; extraction; rice bran oil; stirred tank  Abstract Penelitian ini diarahkan untuk mengkaji ekstraksi asam lemak bebas (ALB) dari minyak dedak padi (MDP) dalam sebuah tangki pengaduk. Campuran asam lemak yang diturunkan dari MDP (ALB MDP) digunakan sebagai ALB dan etanol-air sebagai pelarut. Pertama, koefisien distribusi ALB diukur melalui percobaan kesetimbangan. Percobaan dilakukan pada temperatur 25°C dengan konsentrasi etanol dalam pelarut dan konsentrasi ALB dalam MDP masing-masing pada rentang 85-95%-berat dan 10-30%-berat. Secara umum, koefisien distribusi ALB terhubungkan secara linier dengan konsentrasi etanol. Walaupun demikian, koefisien distribusi ALB MDP tetap sebesar 0,9 merupakan asumsi yang cukup dapat diterima dengan rentang galat 20-30%. Tambahan pula, ALB MDP dapat digambarkan sebagai komponen semu. Percobaan ekstraksi diarahkan untuk mengukur koefisien perpindahan massa ALB, dengan variasi percobaan meliputi rasio pelarut terhadap umpan, konsentrasi etanol dalam pelarut, laju putaran pengaduk, dan konsentrasi ALB dalam MDP. Koefisien perpindahan massa yang diperoleh berada pada rentang (0,5-1,9)10-3 kg·m-2·s-1. Kenaikan rasio pelarut terhadap umpan, konsentrasi etanol dalam pelarut, laju putaran pengaduk, atau konsentrasi ALB dalam MDP meningkatkan koefisien perpindahan ALB. Data koefisien perpindahan massa dapat dikorelasikan dengan baik menggunakan persamaan tak berdimensi dari Skelland-Xien. Kata kunci: asam lemak bebas; ekstraksi; minyak dedak padi; tangki pengaduk

Modeling of Rice Bran Oil Yield and Bioactive Compounds Obtained Using Subcritical Carbon Dioxide Soxhlet Extraction (SCDS)

2015 ◽  
Vol 54 (34) ◽  
pp. 8546-8553 ◽  
Author(s):  
Siew Lian Chia ◽  
Rabiha Sulaiman ◽  
Huey Chern Boo ◽  
Kharidah Muhammad ◽  
Fizreena Umanan ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Bioactive Compounds ◽  
Rice Bran ◽  
Rice Bran Oil ◽  
Soxhlet Extraction ◽  
Oil Yield

scholarly journals Comparative Studies on the Hepatoprotective Effect of White and Coloured Rice Bran Oil against Acetaminophen-Induced Oxidative Stress in Mice through Antioxidant- and Xenobiotic-Metabolizing Systems

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Warunyoo Phannasorn ◽  
Arpamas Chariyakornkul ◽  
Phumon Sookwong ◽  
Rawiwan Wongpoomchai
Keyword(s):  
Oxidative Stress ◽  
Body Weight ◽  
Vitamin E ◽  
Rice Bran ◽  
Antioxidant Activities ◽  
Rice Bran Oil ◽  
Protective Role ◽  
Antioxidant Systems ◽  
Antioxidant Enzyme Activities ◽  
Hepatic Lipid Peroxidation

Rice bran oil (RBO) comprises various nutrients and phytochemicals which exhibit several health benefits. There are no studies regarding the functional effects of different colours of RBO. This study was aimed to compare the constituents and antioxidant activities of white rice bran oil (WRBO) and coloured rice bran oil (CRBO). Each RBO showed similar free fatty acid profiles. However, greater amounts of vitamin E, phytosterols, carotenoids, and chlorophylls were found in CRBO, which had lower γ-oryzanol content than WRBO. Oxidative stress was induced in male mice by an overdose of acetaminophen (APAP) at 300 mg/kg body weight. The mice were then fed with RBO at the equivalent dose to 100 mg/kg body weight of γ-oryzanol three hours later and sacrificed six hours after APAP treatment. The administration of 100 mg γ-oryzanol equivalent in CRBO ameliorated APAP-induced hepatotoxicity in mice more strongly than 100 mg γ-oryzanol equivalent in WRBO, as evidenced by the significant reduction of serum ALT, hepatocellular necrosis, and hepatic lipid peroxidation. CRBO could improve xenobiotic-metabolizing and antioxidant enzyme activities, including glutathione S -transferase, superoxide dismutase, glutathione peroxidase, and glutathione reductase, and also increase mRNA expression of various antioxidant-responsive genes. Vitamin E, phytosterols, carotenoids, and chlorophyll might be the protective compounds in CRBO that alleviate APAP-induced hepatotoxicity through the interruption of APAP metabolism and the activation of antioxidant systems at both transcriptional and enzymatic levels. These findings might provide a protective role of CRBO on oxidative stress associated with several degenerative diseases.

scholarly journals Separation Technology of Vitamin E from Rice Bran Oil

Oleoscience ◽  
2017 ◽  
Vol 17 (6) ◽  
pp. 253-259
Author(s):  
Kousuke HIROMORI ◽  
Naomi SHIBASAKI-KITAKAWA
Keyword(s):  
Vitamin E ◽  
Rice Bran ◽  
Rice Bran Oil ◽  
Separation Technology
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