Study on the composition of rice bran oil and its higher free fatty acids value

2006 ◽  
Vol 83 (2) ◽  
pp. 117-120 ◽  
Author(s):  
A. G. Gopala Krishna ◽  
K. H. Hemakumar ◽  
Sakina Khatoon
2015 ◽  
Vol 55 (9) ◽  
pp. 1123 ◽  
Author(s):  
R. S. Bhatt ◽  
A. Sahoo ◽  
A. K. Shinde ◽  
S. A. Karim

Twenty-four Malpura lambs (28 days old) were distributed into three equal groups (four each from either sexes). They were fed ad libitum on three experimental diets containing graded levels of calcium salt of fatty acids (source: rice bran oil; Ca-FA) at 0 (T1), 20 (T2) and 40 (T3) g per kg of concentrate and dry roughage (Prosopis cineraria leaves) up to 6 months of age along with suckling of mother till weaning (3 months). Effect of Ca-FA supplementation on liveweight gain, feed and nutrient intake was not observed during pre-weaning (28–90 days), which however increased (P < 0.05) in T3 during post-weaning (90–180 days). There was an increase in organic matter intake and digestibility as well as metabolisable energy intake in Ca-FA-supplemented groups. Rumen ammonia-N and ciliate protozoa population was increased (P < 0.05) in T2 and T3 with a positive shift in rumen fermentation (increased propionate and decreased acetate). Blood biochemical analysis revealed effect of treatment and age (P < 0.05) for free fatty acids and cholesterol concentration. Ca-FA supplementation improved (P < 0.05) dressing percentage both at 2% and 4% CA-FA inclusions levels with no change in fat yield and composition. It is concluded that supplementation of Ca-FA prepared from industrial-grade rice bran oil in growing lamb rations improved gain, organic matter intake and digestibility during the post-weaning period and a linear response to the level of supplementation recommends Ca-FA at 40 g/kg for improved lamb performance.


Lipids ◽  
2016 ◽  
Vol 51 (12) ◽  
pp. 1385-1395 ◽  
Author(s):  
Nayana Venugopal Yadav ◽  
Sadashivaiah ◽  
Breetha Ramaiyan ◽  
Pooja Acharya ◽  
Lokesh Belur ◽  
...  

2021 ◽  
Vol 18 (17) ◽  
Author(s):  
Benchamaporn PIMPA ◽  
Chakree THONGRAUNG ◽  
Pornpong SUTTHIRAK

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


Author(s):  
Pravit Santiwattana ◽  
Sirirak Siramard

The objective of this study was to produce trans-free fat spread from rice bran oil and rice bran oil shortening blends to replace partially hydrogenated fats which contain high levels of trans fatty acids. The W/O emulsion of rice bran oil spread was prepared from blending of rice bran oil and rice bran oil shortening with the mass ratio of 40: 60 using PGPR as an emulsifier. Physicochemical properties, fatty acid compositions, thermal behaviors, micronutrients, sensory attributes and oxidative stability of rice bran oil spread were investigated and compared with commercial spread products. Results showed that physicochemical properties of the rice bran oil spread were similar to the commercial spread (B2). Trans fatty acids contents of the rice bran oil spread (0.2% TFAs) were much lower than the commercial spread (F2) produced from partially hydrogenated fat (4.9% TFAs). Thermal behaviors and SFC profile indicated good physical properties and spreadability of the rice bran oil spread which were comparable to the commercial spreads. Micronutrients in the rice bran oil spread were greater than those of commercial spread products. The rice bran oil spread had the highest overall preference scores compared to the two commercial fat spreads. In addition, the rice bran oil spread exhibited high oxidative stability. This study demonstrated that rice bran oil and rice bran oil shortening blends can be used as an alternative source of partially and fully hydrogenated fats as well as tropical oils to produce trans-free fat spreads with desirable properties.


2018 ◽  
Vol 17 (5) ◽  
pp. 977-981 ◽  
Author(s):  
Junko Nagamoto ◽  
Ai Sawazaki ◽  
Motonori Miyago ◽  
Bungo Shirouchi ◽  
Mitsukazu Sakata ◽  
...  

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