scholarly journals Efficiency evaluation of the bottom ash flotation collector by removed saturated fatty acids from soybean oil

Author(s):  
Minsik Kim ◽  
Jongmyung Park ◽  
Heonchan Kang ◽  
Dohyun Jeong
2020 ◽  
Vol 50 (1) ◽  
pp. 47-54
Author(s):  
I De Gasperín ◽  
J.G. Vicente ◽  
J.M. Pinos-Rodríguez ◽  
F Montiel ◽  
R Loeza ◽  
...  

The aim of this research was to determine fatty acid profiles in piglet brain, skin, and muscle, and in the milk of sows fed fat with different saturation grades during gestation and lactation. At 42 days of gestation, 50 multiparous sows were randomly allocated to one of two treatments, namely a diet containing pork lard (n = 25) and a diet containing soybean oil (n = 25). The fats were provided at 3.6% during gestation and at 4% during lactation. The experimental diets were offered through the weaning of the piglets. The fatty acid profile of the milk was determined fourteen days after parturition. At weaning (21 days postpartum) and seven days later, one of the piglets (n = 64) from 16 sows allocated to each treatment was selected at random to determine fatty acid profiles in brain, skin and muscle. Saturated and monounsaturated fatty acids were higher in the diet with pork lard than in that with soybean oil, in which the polyunsaturated fat content was higher. A higher saturation of fatty acids was found in milk from the sows that consumed pork lard, which contained more saturated fatty acids than the milk from sows that consumed soybean oil. The fatty acid profiles in muscle and skin of the piglets were affected by the diet of the sows. However, the fatty acid profile of the piglets’ brains was not affected by the diet of their mothers. Keywords: fat saturation, lard, piglet survival, sow feeding, soybean oil


Animals ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 140 ◽  
Author(s):  
Marco Cullere ◽  
Achille Schiavone ◽  
Sihem Dabbou ◽  
Laura Gasco ◽  
Antonella Dalle Zotte

At present, there is limited knowledge about the possible utilization of the fat fraction derived from Hermetia illucens (HI) larvae processing. The objective of the present study was to evaluate the replacement of soybean oil with HI larvae fat in broiler finisher diet, on the quality and sensory traits of their meat. At 21 days of age, 120 male broiler chickens were randomly allocated to three experimental groups (5 replicates and 8 birds/pen): a basal control diet (C), and two groups in which either 50% or 100% of the soybean oil was replaced with HI larvae fat (the HI50 and HI100 group, respectively). At day 48, 15 birds (3 birds/pen) per group were slaughtered, and breasts and legs were excised and used for meat quality evaluations. Breast and leg physical meat quality, nutritional composition and sensory profile remained substantially unaffected by the dietary treatments. In contrast, the dietary incorporation of HI larvae fat modified the fatty acid (FA) profile of both the breast and leg meat cuts: the proportion of saturated fatty acids increased (p < 0.0001) to the detriment of the polyunsaturated (PUFA) fraction (p < 0.0001). Moreover, the meat n-6/n-3 ratio increased in the HI50 and HI100 groups compared to the C group. HI larvae fat dietary inclusion decreased the monounsaturated fatty acids in the breast (p = 0.0012) but not in the leg meat. Further research should focus on the improvement of the FA profile of the larvae through substrate modulation, or by combining HI larvae with a PUFA-rich feedstuff in feed formulations.


1976 ◽  
Vol 56 (4) ◽  
pp. 671-680 ◽  
Author(s):  
B. E. McDONALD ◽  
R. M. G. HAMILTON

Sixteen barrows and 16 gilts in experiment 1 were fed diets that contained 10% by weight cornstarch, tallow, soybean oil (SBO) or rapeseed oil (RSO) and 20% protein (N × 6.25) from 8 to 23 kg and 18% protein from 23 to 45 kg liveweight. In experiment 2, 32 barrows received the same diets except that the SBO treatment was replaced by 10% cornstarch diets containing 19% protein from 8 to 23 kg and 16% protein from 23 to 45 kg. All pigs were fed a commercial diet that contained 15% protein from 45 to 90 kg liveweight. Source or substitution of fat for cornstarch had no significant effect on weight gain during the growing (8–45 kg) or subsequent finishing (45–90 kg) periods, on the carcass measurements obtained after slaughter at 90 kg liveweight, on average daily feed intake, efficiency of feed utilization or of energy utilization; however, the number of degrees of freedom (df = 7) were small for the latter three parameters. Level and source of dietary fat did affect the fatty acid composition, as determined by gas–liquid chromatography, of the backfat at 45 and 90 kg. The ratios of unsaturated to saturated fatty acids were significantly higher at 45 kg in the fat from pigs fed the tallow or RSO diets than those fed the cornstarch diets. A similar trend remained at 90 kg. The backfat of pigs fed the RSO diet contained 7.6 and 7.8% of erucic and eicosenoic acids, respectively, at 45 kg and still 2.3 to 3.7% of the total at 90 kg, even though the diet fed between 45 and 90 kg liveweight did not contain these fatty acids.


2017 ◽  
Vol 47 (10) ◽  
Author(s):  
Stephan Alexander da Silva Alencar ◽  
Charles Kiefer ◽  
Karina Márcia Ribeiro de Souza Nascimento ◽  
Luiz Henrique Viana ◽  
Liliane Maria Piano Gonçalves ◽  
...  

ABSTRACT: This study was conducted to evaluate the effects of net energy levels on the lipid profile of adipose tissue and muscle of swines. A total of 90 animals, with initial weight of 71.94±4.43kg, were used, and distributed in a randomized block design in five net energy levels (2,300, 2,425, 2,550, 2,675, and 2,800Kcal kg-1 feed), with nine replicates and two animals per experimental unit. Lipid profiles of adipose tissue and muscle were analyzed using gas chromatography. Increasing the levels of net energy using soybean oil, improved the lipid profile of adipose tissue and muscle, increased linearly (P<0.05) the concentrations of polyunsaturated fatty acids, especially linoleic and α-linolenic acid, reduced linearly (P<0.05) the monounsaturated and saturated fatty acids and omega 6: omega 3. In adipose tissue was observed linear reduction (P<0.05) of atherogenic and thrombogenic indexes. In conclusion, increasing the level of net energy of the diet using soybean oil improved the lipid profile of adipose tissue and muscle.


Nutrients ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 1326 ◽  
Author(s):  
Janin Henkel ◽  
Eugenia Alfine ◽  
Juliana Saín ◽  
Korinna Jöhrens ◽  
Daniela Weber ◽  
...  

While the impact of dietary cholesterol on the progression of atherosclerosis has probably been overestimated, increasing evidence suggests that dietary cholesterol might favor the transition from blunt steatosis to non-alcoholic steatohepatitis (NASH), especially in combination with high fat diets. It is poorly understood how cholesterol alone or in combination with other dietary lipid components contributes to the development of lipotoxicity. The current study demonstrated that liver damage caused by dietary cholesterol in mice was strongly enhanced by a high fat diet containing soybean oil-derived ω6-poly-unsaturated fatty acids (ω6-PUFA), but not by a lard-based high fat diet containing mainly saturated fatty acids. In contrast to the lard-based diet the soybean oil-based diet augmented cholesterol accumulation in hepatocytes, presumably by impairing cholesterol-eliminating pathways. The soybean oil-based diet enhanced cholesterol-induced mitochondrial damage and amplified the ensuing oxidative stress, probably by peroxidation of poly-unsaturated fatty acids. This resulted in hepatocyte death, recruitment of inflammatory cells, and fibrosis, and caused a transition from steatosis to NASH, doubling the NASH activity score. Thus, the recommendation to reduce cholesterol intake, in particular in diets rich in ω6-PUFA, although not necessary to reduce the risk of atherosclerosis, might be sensible for patients suffering from non-alcoholic fatty liver disease.


2021 ◽  
Vol 10 (14) ◽  
pp. e510101422099
Author(s):  
Luiz Fernando de Souza Alves ◽  
Joana D’Arc Maurício Rocha ◽  
Matheus dos Santos Cardoso ◽  
Jakeline Marcela Azambuja de Freitas ◽  
Aldi Feiden ◽  
...  

The objectives of this research were to evaluate the effects of the substitution of soybean oil by palm oil in the diet of Nile tilapia (Oreochromis niloticus) post-larvae, to observe the performance and attractiveness of the feed, and to evaluate the fatty acid methyl esters profile of palm oil. Four hundred Nile tilapias were used after hatching (seven days old), distributed in 20 fiberglass tanks of 20 L each. The experiment was carried out in a completely randomized design with five treatments and four replicates. The treatments consisted of different levels of inclusion of palm oil, which were: 0.0, 1.5, 3.0, 4.5 and 6.0 %. The concentration of monounsaturated and saturated fatty acids in palm oil was measured, resulting in high amounts of palmitic, oleic and linoleic fatty acids. Significant differences were observed for the variables final weight, total length, weight gain, specific growth rate and condition factor. No significant differences were observed for palatability of the diets. It is concluded that the inclusion of 3% or more palm oil in substitution of soybean oil during the masculinization stage of tilapia larvae contributes to the improvement of productive parameters.


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