Rice bran oil

About: Rice bran oil is a research topic. Over the lifetime, 2102 publications have been published within this topic receiving 32504 citations.

Nutritional blend oil with balanced fatty acid component and active component for middle and old aged

Abstract: The invention relates to a nutritional blend oil with balanced fatty acid components and active components for the middle and old aged, which is prepared by a plurality of plant oils selected from flaxseed oil, walnut oil, double-low rapeseed oil, soybean oil, wheat germ oil, corn oil, teal oil, peanut oil, grape seed oil, rice bran oil, camellia oil, evening primrose seed oil, sunflower seed oil and the like, wherein, Omega 6 serial polyunsaturated fatty acids (PUFA) and Omega 3 serial PUFA are contained to enable the ratio of saturated fatty acid (SFA) to monounsaturated fatty acid (MUFA) to PUFA to be 0.6-0.8:1:1, the ratio of Omega 6 to Omega 3 to be 4:1 in the comprehensive evaluation of the blend oil absorbed by the middle and old aged and the fat from other sources, thereby meeting the recommended value of Chinese Nutrition Society; the nutritional blend oil contains 2% of gama-linolenic acid, thereby beneficial to improving the contents of DH-gama-linolenic acid and arachidonic acid; the total content of lauric acid, myristic acid and palmitic acid contained in the nutritional blend oil is below 8.5% in order to avoid over rising the level of Low density lipoprotein (LDL) in the plasm of the middle and old aged; in addition, the nutritional blend oil also comprises a plurality of active components with oxidation resistant property, so other antioxidants do not need to be added in the blend oil.The blend oil provided by the invention is characterized by low cost, balanced fatty acid nutrition, a plurality of abundant active components and higher security, thereby better improving the health and intelligence of eaters, preventing cardiovascular and cerebrovascular diseases, and avoiding fatness, hyperlipidemia, thrombotic diseases and the like caused by unbalanced fatty nutrition.

Performance studies on dielectric and physical properties of eco-friendly based natural ester oils using semi-conductive nanocomposites for power transformer application

Abstract: In recent years, the interests on ester-based insulating oil as replacement of mineral oil in large power transformers are growing remarkable manner because of its environmental impact. Green insulating natural ester oil derived from natural sources results in higher biodegradability, fire resistant properties and so on. This research work presents the evaluation of dielectric and physical properties in natural ester oil like sunflower oil (SFO), rice bran oil and corn oil using semi-conductive nanocomposites for different percentages of volume concentrations. The AC breakdown voltage (BDV), loss tangent, DC resistivity, viscosity, dielectric permittivity, flash point and fire point properties are examined as per ASTM and IEC standards. Astoundingly, it is found that use of nanocomposite fluids (NCFs) results enhanced BDV and fire point properties in SFO samples. Hence, ester oil-based NCF serves as a compromising alternative insulation medium for power transformer application.

Significance of Squalene in Rice Bran Oil and Perspectives on Squalene Oxidation.

Abstract: As an intermediate metabolite during the biosynthesis of sterols, squalene is found ubiquitously in plants and animals. In rice, squalene is contained in rice bran, and consequently, squalene in rice bran oil has gained attention. Studies have shown that the intake of squalene from food sources demonstrate various physiological benefits such as the prevention of cancer and cardiovascular disease. Squalene is also known as an effective antioxidant in edible oils. However, due to its chemical structure, squalene is susceptible to oxidation, which may cause a decline in the nutraceutical and antioxidative effects of squalene in edible oils. Oxidative degradation of squalene also results in the formation of scission products (i.e., aldehydes and ketones) which may lead to off-flavor. Since the rate of squalene oxidation depends on the factors that induce its oxidation (i.e., light or heat), emphasis on oxidation mechanisms is necessary. It has been demonstrated in previous studies that the oxidation products formed by the singlet oxygen oxidation and free radical oxidation of squalene are different, and more recently, we demonstrated that different squalene monohydroperoxide isomers are formed by each oxidation mechanism. We herein discuss the significance of squalene in rice bran oil as well as the oxidative degradation of squalene in edible oils with focus on oxidation mechanisms.

Purification of biodiesel by choline chloride based deep eutectic solvent

Abstract: Purification is a crucial step in biodiesel production to meet the biodiesel standard This study purified biodiesel using choline chloride based deep eutectic solvent (DES) DES was used to reduce unreacted oil and unsaponifiable matter in rice bran oil based biodiesel The objective of this work was to study the effect of extraction time using DES on the content and yield of fatty acid methyl ester (FAME) Rice bran used in this work contains 1649 % of oil with initial free fatty acids (FFA) of 4475 % Acid catalyzed methanolysis was employed to convert rice bran oil (RBO) into biodiesel under following operation conditions: T = 60 °C, t = 8 h, molar ratio of oil to methanol = 1/10, H2SO4 = 1% w/w of oil Rice bran oil based biodiesel obtained contain 8905 % of FAME with very low FFA content (005 %) DES was made from a mixture of choline chloride and ethylene glycol with molar ratio of 1/2 Molar ratio of crude biodiesel to DES were 1/2 and 1/4 Extraction time was varied from 15 minutes to 240 minutes at 30 °C The highest FAME content was obtained after purification for 240 min at molar ratio crude biodiesel to DES 1/4 was 9660 % This work shows that DES has potential to purify biodiesel from non-edible raw material, such as RBO

Retention of natural antioxidants of blends of groundnut and sunflower oils with minor oils during storage and frying.

Abstract: Unrefined groundnut oil (GNO) and refined sunflower oil (SFO) were blended with four minor oils including laboratory refined red palmolein (RRPO), physically refined rice bran oil (RBO), unrefined sesame oil (SESO), and unrefined coconut oil (CNO) containing natural antioxidants viz., β-carotene, tocopherols, oryzanol and lignans. The five blends prepared were GNO + RRPO (80:20), GNO + RBO (80:20), GNO + SESO (80:20), SFO + RRPO (50:50) and SFO + CNO (60:40). Prepared blends contained saturated fatty acids (SFA) (16.7–53.3 %); monounsaturated fatty acids (MUFA) (16.0–45.5 %) and polyunsaturated fatty acids (PUFA) (29.2–37.8 %). GNO blends viz., GNO + RRPO, GNO + RBO and GNO + SESO contained β-carotene (10.7 mg/100 g), oryzanol (0.12 g/100 g) and lignans (0.35 g/100 g) respectively as natural antioxidants. SFO was enriched with β-carotene (28.7 mg/100 g) and medium chain fatty acids (34.2 %) by blending with RRPO and CNO respectively. The oil blends (200 ml) were packed and stored at 38 °C/90 % relative humidity (RH) and 27 °C/65 % RH and samples were withdrawn at fixed intervals for analysis. Freshly prepared blends were also investigated for their frying performance. During storage, GNO + RBO blend showed highest oxidative stability probably due to the presence of oryzanol in the order GNO + RBO > GNO + SESO > GNO + RRPO. During frying, the peroxide value of GNO blends with RBO (rich in oryzanol) and SESO (rich in lignans) was less while the free fatty acid value was less in SFO blends with RRPO and CNO. Hence, blending of natural antioxidants rich minor oils (RRPO, RBO and SESO) with the major vegetable oils (GNO and SFO) may preserve them by lowering their rate of oxidation during storage and frying.