Evaluation of antioxidant properties of the different tissues of vine tea ( Ampelopsis grossedentata ) in stripped canola oil and sunflower oil

2020 ◽  
Vol 85 (4) ◽  
pp. 1082-1089 ◽  
Author(s):  
Caihua Jia ◽  
Mingxing Zhang ◽  
Weibo Ma ◽  
Jinghuan Li ◽  
Siming Zhao ◽  
...  
Keyword(s):  
Sunflower Oil ◽  
Canola Oil ◽  
Antioxidant Properties ◽  
Ampelopsis Grossedentata ◽  
Different Tissues

scholarly journals EFFECT OF DEEP-FAT FRYING ON CANOLA OIL, PALMOLEIN AND SUNFLOWER OIL BLENDS: B) BIOLOGICALAND NUTRITIONAL STUDIES

2016 ◽  
Vol 7 (2) ◽  
pp. 81-96
Author(s):  
W. EL-Reffaei ◽  
A. EL-Sebeay ◽  
Hanan EL-Ghandour ◽  
Eman Ragheb ◽  
S. Badr
Keyword(s):  
Sunflower Oil ◽  
Canola Oil ◽  
Deep Fat Frying ◽  
Oil Blends ◽  
Nutritional Studies

Lipid peroxidation as one mode of action in ochratoxin A toxicity in rats and chicks

1997 ◽  
Vol 77 (2) ◽  
pp. 287-292 ◽  
Author(s):  
Dirk Hoehler ◽  
Ronald R. Marquardt ◽  
Andrew A.F. Rohlich
Keyword(s):  
Lipid Peroxidation ◽  
Fatty Acids ◽  
Ochratoxin A ◽  
Sunflower Oil ◽  
Mode Of Action ◽  
Unsaturated Fatty Acids ◽  
Corn Oil ◽  
Iron Catalyst ◽  
Different Tissues

The objective of this study was to determine whether lipid peroxidation is one mode of action in ochratoxin A (OA) toxicity in vivo. Lipid peroxidation was monitored by analyzing malondialdehyde (MDA) in different tissues by HPLC. A refinement study on the MDA assay was carried out, which showed the importance of the addition of an iron catalyst for the decomposition of hydroperoxides to yield a maximum amount of MDA from a given sample. The rat experiment was designed in a 2 × 2 factorial arrangement using 4 × 6 animals. The four different diets were fed for 21 d and contained either 1% corn oil and 9% tallow (Diets I and III) or 10% corn oil (Diets II and IV); in groups III and IV, 5 mg OA were added per kilogram of diet. For the chick experiment 4 × 8 Leghorn cockerels received diets for 14 d with no added sunflower oil (Diets I and III), whereas the diets of groups II and IV were supplemented with 2.5% sunflower oil. In groups III and IV, 2.5 mg OA were added per kilogram of diet. In both experiments OA decreased the performance of the animals significantly. In the rat experiment an increased lipid peroxidation due to a higher dietary level of unsaturated fatty acids could be obtained, when muscle samples were oxidatively stressed with Fe3+ and ascorbic acid. In the chick experiment there were very clear effects of the dietary treatment on the MDA concentrations of different tissues, as both a higher supply with unsaturated fatty acids and OA increased most of the MDA values significantly. These data suggest that lipid peroxides are formed in vivo by OA, but the effects may vary considerably from species to species, and may also be influenced by other factors. Key words: Ochratoxin A, lipid peroxidation, malondialdehyde, rat, chick

scholarly journals Effect of Catalyst Preparation on the Selective Hydrogenation of Vegetable Oil Over Low Percentage Pd/Diatomite Catalysts

2014 ◽  
Vol 17 (1) ◽  
pp. 33 ◽  
Author(s):  
K. Toshtay ◽  
A.B. Auyezov ◽  
Zh.A. Bizhanov ◽  
A.T. Yeraliyeva ◽  
S.K. Toktasinov ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Fatty Acids ◽  
Surface Area ◽  
Sunflower Oil ◽  
Canola Oil ◽  
Substantial Reduction ◽  
Solid Fat Content ◽  
Health Concern ◽  
Acid Activation ◽  
Adsorption Method

Hydrogenated vegetable oils contain high contents of <em>trans</em>-fatty acids. Because of the increased health concern about <em>trans</em>-fatty acids, new hydrogenations have been studied to seek ways for substantial reduction of the <em>trans</em>-fatty acids in the hydrogenated products. In this research, activated diatomite has distinctive properties as a support for hydrogenation catalysts. Investigation of textural properties of raw and purified diatomite samples reveals that during acid activation surface area increases significantly. Although, acid activation of diatomite is a commonly chemical modification to enhance its adsorption capacity. We are preparing adsorption method to synthesize low percentage 0.2% of Pd/Diatomite catalyst. The activated diatomite and the obtained catalyst was characterized by using thermogravimetric analysis (TGA), Brunauer-Emmett-Teller surface area analysis (BET), scanning electron microscopy (SEMEDAX), transmission electron microscopy (TEM). It was utilized for hydrogenation of sunflower oil using the Parr reactor in laboratory testing a variety of temperature (70, 90, 110 ºC) and canola oil in industrial testing, at temperature 90 ºC and 0.5 MPa pressure and compared to commercial nickel catalyst (Pricat-9910) at 150 ºC, 0.5 MPa pressure agitation of 800 rpm for 160 min. The changes in iodine value, fatty acid composition, <em>trans</em>-fatty acids, melting point and solid fat content were investigated on partial hydrogenated sunflower oil and canola oil. The experimentally obtained results show that the palladium catalyst is the most active compared to the commercial catalyst. Lower hydrogenation temperature used 0.2% Pd/Diatomite catalyst, significant reducing the formation of <em>trans</em>-content by 13% in fat.

scholarly journals Evaluation of antioxidant properties of lemon verbena (Lippia citriodora) essential oil and its capacity in sunflower oil stabilization during storage time

2018 ◽  
Vol 6 (4) ◽  
pp. 983-990 ◽  
Author(s):  
Reza Farahmandfar ◽  
Maryam Asnaashari ◽  
Mehdi Pourshayegan ◽  
Sara Maghsoudi ◽  
Hannaneh Moniri
Keyword(s):  
Essential Oil ◽  
Sunflower Oil ◽  
Storage Time ◽  
Antioxidant Properties ◽  
Lippia Citriodora ◽  
Lemon Verbena

scholarly journals Antioxidant Properties of a Traditional Vine Tea, Ampelopsis grossedentata

Antioxidants ◽  
2019 ◽  
Vol 8 (8) ◽  
pp. 295 ◽  
Author(s):  
Kun Xie ◽  
Xi He ◽  
Keyu Chen ◽  
Jihua Chen ◽  
Kozue Sakao ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Ultrasonic Treatment ◽  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Nicotinamide Adenine Dinucleotide Phosphate ◽  
Tea Polyphenols ◽  
Related Factor ◽  
Quinone Oxidoreductase ◽  
Ampelopsis Grossedentata

Ampelopsis grossedentata, also called vine tea, has been used as a traditional beverage in China for centuries. Vine tea contains rich polyphenols and shows benefit to human health, but the chemical and antioxidant properties of vine tea polyphenols from different locations remain unclear. This study aims to investigate the chemical and antioxidant properties of vine tea from three major production areas in China including Guizhou, Hunan, and Guangxi Provinces. The highest amount of polyphenol from vine tea was extracted by 70% ethanol at 70 °C for 40 min with ultrasonic treatment. The major compound in vine tea polyphenols (VTP) was determined as dihydromyricetin (DMY) by high-performance liquid chromatography (HPLC) and the content was estimated as 21.42%, 20.17%, and 16.47% of dry weight basis from Hunan, Guizhou, and Guangxi products, respectively. The antioxidant activities were investigated in vitro and in culture hepatic cells. VTP and DMY showed strong 1,1-Diphenyl-2-picrylhydrazyl free radical (DPPH) scavenging ability and high oxygen radical absorption capacity (ORAC) value in vitro. VTP and DMY also increased the level of nicotinamide adenine dinucleotide phosphate (NADPH):quinone oxidoreductase (NQO1) in HepG2 cells. Moreover, VTP and DMY enhanced the level of nuclear factor erythroid 2-related factor 2 (Nrf2) and reduced the level of Kelch-like ECH-associated protein 1 (Keap1). Taken together, our data demonstrated that the extraction of vine tea by 70% ethanol with ultrasonic treatment is a novel method to efficiently obtain components possessing stronger antioxidant activity. Furthermore, the results from the culture cells suggest that the bioactive component of vine tea might exert the antioxidant activity by activating the cellular Nrf2/Keap1 pathway.

Mutagenicity of Fumes from Fried Chicken Legs

2003 ◽  
Vol 66 (7) ◽  
pp. 1269-1276 ◽  
Author(s):  
Y. C. CHEN ◽  
C. P. CHIU ◽  
B.-H. CHEN
Keyword(s):  
Soybean Oil ◽  
Sunflower Oil ◽  
Canola Oil ◽  
Ames Test ◽  
Glass Bead ◽  
Frying Time ◽  
Chicken Legs

The mutagenicity of fumes formed during the frying of chicken legs at 163°C for 1 to 4 h in soybean oil, canola oil, or sunflower oil was studied. A modified smoke adsorption device was used to collect fumes, and the mutagenicity of the fumes was determined with the Ames test. The results obtained show that the mutagenicity of the fumes from all three oils increased with an increase in frying time. Under the same heating conditions, the oil showing the most extensive mutagenicity was soybean oil, followed by canola oil and sunflower oil. For the smoke adsorption device, the strongest mutagenicity was exhibited by the adsorptive wool, followed by the condensates and glass bead extracts.

scholarly journals The effects of canola and olive oils consumption compared to sunflower oil, on lipid profile and hepatic steatosis in women with polycystic ovarian syndrome: a randomized controlled trial

2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Maryam Yahay ◽  
Zahra Heidari ◽  
Zahra Allameh ◽  
Reza Amani
Keyword(s):  
Fatty Liver ◽  
Lipid Profile ◽  
Sunflower Oil ◽  
Canola Oil ◽  
Polycystic Ovarian Syndrome ◽  
Dietary Intervention ◽  
Oil Consumption ◽  
Olive Oils ◽  
Sunflower Oils ◽  
Ovarian Syndrome

Abstract Background Polycystic Ovarian Syndrome (PCOS) is one of the most common endocrinopathies and metabolic disorders in women during their reproductive years. It is often associated with dyslipidemia and other risk factors of cardiovascular diseases (CVD). This study was aimed to evaluate dietary intervention effects with canola and olive oils compared to sunflower oil on lipid profile and fatty liver severity among women with PCOS. Method This study was a 10-week intervention including 72 women with PCOS. Patients were randomly assigned to three groups for receiving 25 g/day canola, olive, or sunflower oils for 10 weeks. The primary and secondary outcomes were to assess changes in lipid profile and in fatty liver severity, respectively. Result At the end of the study, 72 patients with a mean age of 29.31 were analysed. Canola oil consumption resulted in a significant reduction in serum levels of TG (P = 0.002) and TC/HDL (P = 0.021), LDL/HDL (P = 0.047), and TG/HDL (P = 0.001) ratios, however, there was no significant reduction in lipid profile following olive oil consumption. Canola (P < 0.001) and olive oils (P = 0.005) could significantly reduce the fatty liver grade. Moreover, HOMA-IR in both canola (P < 0.001) and olive (P = 0.004) groups was significantly decreased. Conclusion In total, compared to olive and sunflower oils, significant improvements in lipid profile, liver function, and HOMA-IR were observed following canola oil consumption in women with PCOS. Trial registration IR.MUI.RESEARCH.REC.1397.315. Registered 30 JUNE 2019 - Retrospectively registered, https://www.irct.ir/trial/38684

scholarly journals Characterization, Density and In Vitro Controlled Release Properties of Mimosa (Acacia mearnsii) Tannin Encapsulated in Palm and Sunflower Oils

Animals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2919
Author(s):  
Shehu Lurwanu Ibrahim ◽  
Abubeker Hassen
Keyword(s):  
Small Intestine ◽  
Palm Oil ◽  
Sunflower Oil ◽  
Particle Density ◽  
Release Kinetics ◽  
Antioxidant Properties ◽  
In Vitro Release ◽  
Coating Materials ◽  
Sunflower Oils

Tannin has gained wider acceptance as a dietary supplement in contemporary animal nutrition investigations because of its potential to reduce enteric methane emission. However, a major drawback to dietary tannin intake is the bitter taste and instability in the gastrointestinal tract (GIT). The utilization of fats as coating materials will ensure appropriate masking of the tannin’s aversive taste and its delivery to the target site. The aims of this study were to encapsulate mimosa tannin with palm oil or sunflower oil, and to assess the microcapsules in terms of encapsulation efficiency, morphology, density, and in vitro release of tannin in media simulating the rumen (pH 5.6), abomasum (pH 2.9) and small intestine (pH 7.4). The microencapsulation of mimosa tannin in palm or sunflower oils was accomplished using a double emulsion technique. The results revealed that encapsulated mimosa tannins in palm oil (EMTP) and sunflower oil (EMTS) had high yields (59% vs. 58%) and encapsulation efficiencies (70% vs. 68%), respectively. Compared to unencapsulated mimosa tannin (UMT), the morphology showed that the encapsulated tannins were smaller in size and spherical in shape. The UMT had (p < 0.01) higher particle density (1.44 g/cm3) compared to 1.22 g/cm3 and 1.21 g/cm3 for the EMTS and EMTP, respectively. The proportion of tannins released by the UMT after 24 h in the rumen (94%), abomasum (92%) and small intestine (96%) simulated buffers, reduced (p < 0.01) to 24%, 21% and 19% for the EMTS and 18%, 20% and 16% for the EMTP in similar media and timeframe. The release kinetics for the encapsulated tannins was slow and steady, thus, best fitted by the Higuchi model while the UMT dissolved quickly, hence, only fitted to a First order model. Sequential tannin release also indicated that the EMTS and EMTP were stable across the GIT. It was concluded that the microencapsulation of mimosa tannin in palm or sunflower oils stabilized tannins release in the GIT simulated buffers with the potential to modify rumen fermentation. Further studies should be conducted on the palm and sunflower oils microcapsules’ lipid stability, fatty acid transfer rate in the GIT and antioxidant properties of the encapsulated tannins.

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