Effect of dewaxing pretreatment on composition and stability of rice bran oil: Potential antioxidant activity of wax fraction

2006 ◽  
Vol 108 (8) ◽  
pp. 679-686 ◽  
Author(s):  
Samia Mezouari ◽  
S. Parkash Kochhar ◽  
Karin Schwarz ◽  
Karl Eichner
Keyword(s):  
Antioxidant Activity ◽  
Rice Bran ◽  
Rice Bran Oil

Encapsulation of Unsaponifiable Matter of Rice Bran Oil Bychitosan and Lepidium perfoliatum Seed Gum: Characterization and Antioxidant Activity

2020 ◽  
Vol 97 (10) ◽  
pp. 1131-1140
Author(s):  
Mahboobeh Jamshidi ◽  
Reza Esmaeilzadeh Kenari ◽  
Ali Motamedzadegan ◽  
Pourya Biparva
Keyword(s):  
Antioxidant Activity ◽  
Unsaponifiable Matter ◽  
Rice Bran ◽  
Rice Bran Oil ◽  
Seed Gum

scholarly journals Pretreatment to increase yield and antioxidant activity of γ-oryzanol in rice bran oil

ScienceAsia ◽  
2016 ◽  
Vol 42 (2) ◽  
pp. 75 ◽  
Author(s):  
Duangkamol Ruen-Ngam ◽  
Chitti Thawai ◽  
Sujitra Sukonthamut
Keyword(s):  
Antioxidant Activity ◽  
Rice Bran ◽  
Rice Bran Oil

PENGARUH JENIS PELARUT TERHADAP RENDEMEN DAN AKTIVITAS ANTIOKSIDAN DALAM EKSTRAK MINYAK BEKATUL PADI (RICE BRAN OIL)

EKUILIBIUM ◽  
2014 ◽  
Vol 13 (1) ◽  
Author(s):  
Agus Purwanto
Keyword(s):  
Antioxidant Activity ◽  
Ethyl Acetate ◽  
Rice Bran ◽  
Rice Bran Oil ◽  
Economic Value ◽  
Solvent Polarity ◽  
Acid Number ◽  
Free Radical Damage ◽  
Solvent Type ◽  
Rice Milling

<p>Abstract: Bran rice is a by-product of rice milling which only used as cattle feed. Utilization of<br />bran rice to take rice bran oil will increase its economic value. Rice bran oil contains natural<br />antioxidants -oryzanol and fatty acids. Antioxidants -oryzanol are more powerful than vitamin<br />E to avoid free radical damage. One way to recovery rice bran oil is extraction using volatile<br />solvents. The effects of solvent type to yield of rice bran oil and antioxidant activity of rice bran<br />oil need to be researched. This study started with the process of stabilization of bran to inhibit<br />lipase activity. Next process was extraction of bran oil using n-hexane, ethyl acetate, and<br />ethanol as the solvent. The next step was evaluation the acid number and antioxidant activity of<br />obtained oil with DPPH (2,2-diphenyl-1-picrylhydrazyl) method. The results showed that the<br />yields of oil were affected by solvent polarity compounds. Highest yield was obtained on<br />extraction using ethanol and the yield was 12.553%, 14.105% and 17.431%. Acid test showed<br />that extraction using ethyl acetate produced oil with smallest acid number (79.662 and 90.882)and test of antioxidant activity showed that extraction with ethanol was potential as antioxidants<br />which value of IC<br />50<br />were 46.79% and 47.29%.<br />Keywords: bran, extraction, solvent type, antioxidants, DPPH</p>

scholarly journals Growth Performance, Antioxidant Activity, Immune Status, Meat Quality, Liver Fat Content, and Liver Histomorphology of Broiler Chickens Fed Rice Bran Oil

Animals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3410
Author(s):  
Shaimaa Selim ◽  
Eman Hussein ◽  
Nazema S. Abdel-Megeid ◽  
Sahar J. Melebary ◽  
Mohammad S. AL-Harbi ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Meat Quality ◽  
Rice Bran ◽  
Broiler Chickens ◽  
Immune Status ◽  
Rice Bran Oil ◽  
Density Lipoprotein ◽  
Abdominal Fat ◽  
Phagocytic Index ◽  
Histological Structure

This trial was performed to determine the effect of rice bran oil (RBO) inclusion in diets of broiler chickens on performance, carcass characteristics, blood parameters, meat quality, antioxidant activity, liver lipid content, and liver histological structure. The 35-day feeding trial was conducted on 240 one-day-old Ross 308 broiler chickens, allocated to four treatment groups with six replicates each. RBO was examined at different inclusion levels, 0% (control), 1% (RBO1%), 1.5% (RBO1.5%), and 2% (RBO2%) in a completely randomized design. The results showed that at the end of the trial (35 days) the RBO supplementation had positive effects (p < 0.001) on the productivity parameters, but the feed intake was linearly decreased due to RBO inclusion. In addition, RBO supplementation linearly improved (p < 0.05) the dressing percentage, breast yield, immune organs relative weights, and meat glutathione concentration, while it decreased (p < 0.01) the abdominal fat yield and meat crude fat, triglycerides, cholesterol, and Malondialdehyde (MDA) contents in broiler’s meat. Moreover, serum total protein, globulin, and high-density lipoprotein contents improved noticeably (p < 0.01) due to offering an RBO-supplemented diet, but serum total lipids, total cholesterol, triglyceride, low-density lipoprotein, and aspartate aminotransferase concentrations linearly reduced (p < 0.01). The RBO supplementation augmented (p < 0.05) the phagocytic index, phagocytic activity, and antibody titer compared to control. On the other hand, RBO inclusion had no effect on the breast, thigh, or abdominal fat color parameters. Moreover, RBO supplementation reduced (p < 0.01) the content of total saturated FA (SFA), but increased (p < 0.01) the content of total monounsaturated FA (MUFA), and polyunsaturated FA in both breast and thigh meat. Chemical analysis of the liver tissue samples revealed that the inclusion of RBO linearly reduced (p < 0.05) hepatic cholesterol, triglyceride, and MDA contents. Histologically, the lipid percentage and number of lipid droplets (p < 0.01) were markedly lessened in the RBO-supplemented groups. The histological structure of the liver asses by light and electron microscope were normal in all groups without any pathological lesions. It is concluded that RBO could be used as a valuable ingredient in broiler chickens’ diets to stimulate the growing performance and immune status, enhance the antioxidant activity and blood lipid profile, augment liver function, and improve the nutritive value of the meat.

scholarly journals Antioxidant and Anti-inflammatory Activity of γ-Oryzanol Compared to Rice Bran Oil to Repair Ovarian Histological Structure from One Push Transfluthrin Exposure Effect

2022 ◽  
Vol 10 (B) ◽  
pp. 1-12
Author(s):  
Lilis Lisnawati ◽  
Sri Poeranto ◽  
Agustina Tri Endharti ◽  
Moch. Istiadjid Edi Santoso
Keyword(s):  
Antioxidant Activity ◽  
Rice Bran ◽  
Reproductive System ◽  
Rice Bran Oil ◽  
Female Rats ◽  
Inflammatory Activity ◽  
Histological Structure ◽  
Exposure Effect ◽  
Tnf Α ◽  
Anti Inflammatory

BACKGROUND: Fertility is affected by both the reproductive organs and external factors (genetics, hormones, radiation exposure, use of insecticides, and nutrition). The histological structure of the ovaries is an indicator of reproductive function. Insect repellent use with pyrethroid active ingredients and its impact on health has become a discussion in the medical sector for years. Disruption of the reproductive system homeostasis may cause several issues, from disruption of ovarian function to infertility. γ-Oryzanol has higher antioxidants than vitamin E. It is found mostly in rice bran oil (RBO). Researchers have investigated the effectiveness of RBO and γ-Oryzanol, but the number of studies focusing on the reproductive system is very limited. Results of in silico showed anti-inflammatory potential, and nitric oxide γ-Oryzanol is stronger than the antioxidant activity. It also showed γ-Oryzanol bond with Foxo3a and Growth Differentiating Factor 9 (GDF9), indicating the γ-Oryzanol potential for reproductive health (women). Studies also reported that γ-Oryzanol administration caused anti-inflammatory and antioxidant activity compared to RBO in improving ovarian physiological function using tumor necrosis factor α (TNF-α) levels, Foxo3a expression, and GDF9 expression exposed to one push transfluthrin as the parameter. AIM: We aimed to investigate antioxidant and anti-inflammatory activity of γ-Oryzanol compared to rice bran oil to repair ovarian histological structure from one push transfluthrin exposure effect. METHODS: Experimental research, post-test only control group design approach, with a completely randomized design, consisted of 6 (six) groups of Wistar strain female rats. They were exposed to one push with the active ingredient of transfluthrin 21.3%, by inhalation for 6 hours, RBO 0.3 mg/g/ body weight (BW)/day, γ-Oryzanol 3.75 ml/g/BW/day. Statistical analysis was done with the Mann Whitney’s posthoc Kruskal Wallis test with IBM SPSS version 25 software. RESULTS: γ-Oryzanol had more potent anti-inflammatory and antioxidant activity than RBO in improving the ovarian histology structure (including maintaining ovarian weight, increasing follicular growth, and suppressing follicular abnormalities) through decreased TNF-α levels and decreased Foxo3a expression, and increased GDF9 expression. CONCLUSION: The administration of γ-Oryzanol improves the ovarian histological structure from free radicals effects, namely exposure to one push of transfluthrin.

scholarly journals Oil Extraction from Rice Bran with Various Solvents and Concentration of Crude Extract to Antioxidant Activity

ALCHEMY ◽  
2015 ◽  
Vol 4 (1) ◽  
Author(s):  
Arief Suryadinata
Keyword(s):  
Antioxidant Activity ◽  
Rice Bran ◽  
Rice Bran Oil ◽  
Experimental Tests ◽  
Antioxidant Compounds ◽  
Average Yield ◽  
Endurance Test ◽  
Descriptive Research ◽  
Oil Extract ◽  
Chloroform Methanol

<p>Rice bran contains components such as oryzanol antioxidants, tocopherols, tocotrienols, phytosterols, polyphenols, and squalene. Oryzanol is a very powerful antioxidant and oryzanol is only found in rice bran oil. This research aims to know the antioxidant activity of the extract chloroform:methanol in the bran and find the endurance of antioxidant against a wide variety of pH and temperature. The method used is descriptive research through experimental tests in the laboratory. Samples taken from the side of rice mills in the form of bran and then macerated with chloroform: methanol. After that tested the antioxidant activity of the compounds made by the method of DPPH with various concentration 10, 20, 30, 40 and 50 ppm. Furthermore, the endurance test of antioxidant compounds at various pH and temperature using the best concentration of antioxidant compounds. Based on the results, rice bran oil extract concentration of 50 ppm has antioxidant activity of 4.69%. Average yield the highest antioxidant activity shown in heating conditions with a temperature of 30oC for 30 minutes is equal to 32.25%. As well as the highest antioxidant activity was also shown at pH 5 in the amount of 25.1%.</p><p> </p><p><em><strong>Keywords:</strong><strong> </strong>DPPH, Oryzanol, Rice bran</em></p>

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