Quantification and Determination of Composition of Steryl Ferulates in Refined Rice Bran Oils Using an UPLC-MS Method

2017 ◽  
Vol 94 (3) ◽  
pp. 375-385 ◽  
Author(s):  
Maitê S. Cuevas ◽  
Patricia T. de Souza ◽  
Christianne E. da Costa Rodrigues ◽  
Antonio J. A. Meirelles
Keyword(s):  
Rice Bran ◽  
Steryl Ferulates

Determination of cadmium in rice bran oils by ICP-MS with rapid ultrasound-assisted acid leaching extraction

2020 ◽  
Vol 15 (2) ◽  
pp. 193-198
Author(s):  
Zhiying Shao ◽  
Mei Xue ◽  
Qin Liu ◽  
Peng Li ◽  
Yong Fang ◽  
...  
Keyword(s):  
Rice Bran ◽  
Acid Leaching ◽  
Icp Ms ◽  
Ultrasound Assisted

Synthesis of Methyl Ester from Rice Bran Oil through the Esterification Reaction

2020 ◽  
Vol 851 ◽  
pp. 164-171 ◽  
Author(s):  
Aman Santoso ◽  
Abdurrohman ◽  
Anugrah Ricky Wijaya ◽  
Dedek Sukarianingsih ◽  
Sumari ◽  
...  
Keyword(s):  
Refractive Index ◽  
Methyl Ester ◽  
Vegetable Oil ◽  
Rice Bran ◽  
Rice Bran Oil ◽  
Methyl Esters ◽  
Acid Number ◽  
Esterification Reaction

Vegetable oil is one of rice bran components. As triglycerides, vegetable oil can be converted to fatty acid and alkyl esters for further treatments. Synthesis of alkyl ester oil can be carried out by esterification or transesterification reaction, depending on the quality of the oil and the catalyst. The purposes of this study are 1) Rice bran oil isolation, 2) Oil esterification 3) Characterization and identification of the methyl ester that compose rice bran oil. The stages in this research are 1) Extraction of rice bran oil, 2) Synthesis of methyl ester from rice bran through esterification reaction, 3) Methyl ester characterization of rice bran oil and its potential test as biodiesel included determination of density, viscosity, refractive index, and acid number test, 4) The identification of synthesized methyl esters composition using GC-MS. The results showed that rice bran oil has a yield of 18.09%. Synthesis of methyl esters from rice bran oil through the esterification reaction with a catalyst acid yields 72.37%. The characters of the synthesized methyl ester are on the range of biodiesel quality standards, namely, the density is 0.850 g/mL, viscosity is 4.73 cSt, a refractive index is 1.45871, and an acid number is 0.76 g KOH/g methyl ester, therefore it is claimed that the synthesized methyl esters have the potential as biodiesel. The GC-MS result showed the presence of compounds methyl tetradecanoate (0.38%), methyl hexadecanoate (40.67%), methyl 9-octadecenoate (53.68%), methyl octadecanoate (5.02%), and methyl eicosanoate (0.14%).

Simultaneous determination of tocols, γ-oryzanols, phytosterols, squalene, cholecalciferol and phylloquinone in rice bran and vegetable oil samples

2019 ◽  
Vol 271 ◽  
pp. 630-638 ◽  
Author(s):  
Piramon Pokkanta ◽  
Phumon Sookwong ◽  
Manatchanok Tanang ◽  
Saranya Setchaiyan ◽  
Pittayaporn Boontakham ◽  
...  
Keyword(s):  
Simultaneous Determination ◽  
Vegetable Oil ◽  
Rice Bran

scholarly journals Determination of antioxidant component and activity of rice bran extract

2011 ◽  
Vol 18 (6) ◽  
pp. 1402-1406 ◽  
Author(s):  
F. Arab ◽  
I. Alemzadeh ◽  
V. Maghsoudi
Keyword(s):  
Rice Bran ◽  
Rice Bran Extract

Interference by extractives in the determination of malathion residues in rice bran

The Analyst ◽  
1964 ◽  
Vol 89 (1057) ◽  
pp. 286 ◽  
Author(s):  
Angela N. Bates ◽  
D. G. Rowlands
Keyword(s):  
Rice Bran

scholarly journals KINETIKA REAKSI ENZIMATIS EKSTRAK KASAR ENZIM SELULASE BAKTERI SELULOLITIK HASIL ISOLASI DARI BEKATUL

ALCHEMY ◽  
2013 ◽  
Author(s):  
Dyah Ayu Saropah ◽  
Akyunul Jannah ◽  
Anik Maunatin
Keyword(s):  
Rice Bran ◽  
Enzymatic Reaction ◽  
Milling Process ◽  
Cellulolytic Enzyme ◽  
Cellulose Content ◽  
Optimum Conditions ◽  
Cellulolytic Bacteria ◽  
Cellulase Enzymes ◽  
Rice Milling

<p>Bran rice is a by-product of rice into rice milling process, the cellulose content of 40-60%, so the potential as a carbon source for the growth of microorganisms such as bacteria to produce enzymes particularly cellulolytic bacteria. The purpose of the study was to determine the diversity of the characters from the cellulolytic bacterial isolates and optimum conditions enzyme (cellulase enzymes rough) so that they can hydrolyze the cellulose to glucose with either rice bran. The characterization includes the determination of pH, temperature and time of optimum crude extract of bacterial cellulolytic enzyme cellulase, determination of Vmax and Km and molecular mass determination of cellulase.</p><p>Research methods include making media, regeneration of isolates, bacterial growth curve manufacturing, production of cellulase enzymes from bacterial cellulolytic rough at the optimum conditions, the kinetics of enzymatic reaction: substrate concentration factor of the reaction rate (with variation of the concentration of 0.50%, 0.75%, 1 , 00%, 1.25% and 1.50% (w / v)) followed by calculating the Vmax and Km.</p><p>The results showed that the enzyme cellulase of cellulolytic bacteria isolated from rice bran result that has optimum conditions at pH 7.5, temperature 50 ° C, 40 min incubation time to produce Vmax 0.0086 units / mL and Km 1.694%.</p>

scholarly journals Determination of Tocopherols in Rice Bran Oils by High Performance Liquid Chromatography

1982 ◽  
Vol 31 (4) ◽  
pp. 205-208
Author(s):  
Keizo TANABE ◽  
Masakazu YAMAOKA ◽  
Akio TANAKA ◽  
Akio KATO ◽  
Junko AMEMIYA
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Rice Bran ◽  
High Performance
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