Effect of Roasting Conditions on Antioxidative Activity of Roasted Sesame Seed Oil. Part 1. Marked Antioxidative Activity of Seed Oils Developed by Roasting of Oil Sesame Seeds.

Background and Aim: Essential oils found frequently in plants are well known for their activities against bacteria, viruses, and fungi, and antioxidant properties. This study aimed to analyze egg yolk replacement by seed oils of Gossypium spp. (cotton), Balanites aegyptiaca (desert date), and Sesamum indicum (sesame) in semen extender, on ram sperm quality chilled at 4°C and frozen-thawed. Materials and Methods: Ejaculates were collected from adult rams and refrigerated at 4°C in a Tris-based extender containing 1.25%, 2.5%, 5%, and 10% of Gossypium spp., B. aegyptiaca, and S. indicum seed oils, to evaluate which were the two best extenders for comparison with BIOXcell, a commercial extender for deep freezing ram semen. Results: The data showed that sperm movements analyzed by the CASA system were faster in extenders supplemented with 2.5-5% of cottonseed oil and 1.25-10% of sesame oil, whereas in the extender containing B. aegyptiaca oil, all seminal parameters studied had the worst values. During the sperm-freezing process, 5% of cottonseed oil and 5% sesame seed oil were selected from the first study, with sesame oil reaching the best sperm quality. Thus, sperm motility and velocity were 44.14±13.99%, 24.44±12.6%, and 25.92±11.50%; and 20.26±9.56%, 8.76±6.38%, and 9.42±5.40%, respectively, for sesame oil, cottonseed oil, and BIOXcell. Conclusion: In summary, 2.5-10% of cottonseed oil and 1.25-10% of sesame seed oil can replace egg yolk in a Tris–egg yolk–based extender. Moreover, a Tris-based extender supplemented with 5% sesame seed oil could be an alternative for deep freezing ram semen, even though these results need to be confirmed with semen collected from rams with appropriate sexual rest.

Download Full-text

Bio-Based Polyols from Seed Oils for Water-Blown Rigid Polyurethane Foam Preparation

International Journal of Polymer Science ◽

10.1155/2016/4909857 ◽

2016 ◽

Vol 2016 ◽

pp. 1-11 ◽

Cited By ~ 5

Author(s):

Paweena Ekkaphan ◽

Sarintip Sooksai ◽

Nuanphun Chantarasiri ◽

Amorn Petsom

Keyword(s):

Seed Oil ◽

Sesame Seed ◽

Seed Oils ◽

Pumpkin Seed ◽

Foam Morphology ◽

Alcoholysis Reaction ◽

Methylene Diphenyl Diisocyanate ◽

Sesame Seed Oil ◽

Pumpkin Seed Oil ◽

Cell Foam

The preparation of water-blown rigid polyurethane (RPUR) foams using bio-based polyols from sesame seed oil and pumpkin seed oil has been reported. Polyols synthesis involved two steps, namely, hydroxylation and alcoholysis reaction. FTIR, NMR, and ESI-MS were used to monitor the process of the synthesized polyols and their physicochemical properties were determined. The resulting polyols have OH number in the range of 340–351 mg KOH/g. RPUR foams blown with water were produced from the reaction of biopolyols with commercial polymeric methylene diphenyl diisocyanate (PMDI). The proper PUR formulations can be manipulated to produce the desired material applications. These seed oil-based RPUR foams exhibited relatively high compressive strength (237.7–240.2 kPa) with the density in the range of 40–45 kg/m3. Additionally, the cell foam morphology investigated by scanning electron microscope indicated that their cellular structure presented mostly polygonal closed cells. The experimental results demonstrate that these bio-based polyols can be used as an alternative starting material for RPUR production.

Download Full-text

Chemical aspects of the antioxidative activity of roasted sesame seed oil, and the effect of using the oil for frying.

Agricultural and Biological Chemistry ◽

10.1271/bbb1961.50.857 ◽

1986 ◽

Vol 50 (4) ◽

pp. 857-862 ◽

Cited By ~ 64

Author(s):

Yasuko FUKUDA ◽

Masayasu NAGATA ◽

Toshihiko OSAWA ◽

Mitsuo NAMIKI

Keyword(s):

Seed Oil ◽

Antioxidative Activity ◽

Sesame Seed ◽

Sesame Seed Oil

Download Full-text

Hepatorenal Protective Effects of Sesame Seeds Oil, Flaxseed Oil and their Mixture against Methotrexate Toxicity in Rats

Iranian Jornal of Toxicology ◽

10.32598/ijt.16.1.877.1 ◽

2022 ◽

Vol 16 (1) ◽

pp. 51-62

Author(s):

HagaR Farid Elbakry ◽

◽

Hoda Abdel Rahman Abdel Salam ◽

Sherein Saeid Abdelgayed ◽

Doha A. Mohamed ◽

...

Keyword(s):

Oxidative Stress ◽

Seed Oil ◽

Sesame Seed ◽

Flaxseed Oil ◽

Total Phenolic ◽

Efficient Treatment ◽

Sesame Seeds ◽

Sesame Seed Oil ◽

Liver And Kidney ◽

Kidney Functions

Background: Methotrexate (MTX) is an anti-metabolite drug used in the treatment of many cancers and autoimmune diseases. Methods: This study investigated the protective effect of flaxseed oil, sesame seed oil, and their mixture on the MTX-induced hepatorenal toxicity. Thirty rats divided into five groups of: normal control, MTX control, and flaxseed oil, sesame seed oil, and the mixture groups. The oils were administered to rats orally (2 ml/kg) for nine consecutive days followed by a methotrexate injection intraperitoneally (20 mg/kg) on the 9th day. Blood samples, liver and kidney tissues were collected from all rats for biochemical studies and histopathological assessments. The total phenolic content and fatty acid profiles of the oils were also determined. Results: Methotrexate induced hepatorenal toxicity as evident by the histopathological assessments of liver and kidneys, elevation of liver and kidney functions’ biomarkers, and increased plasma and liver oxidative stress associated with a rise in the tumor necrosis factor-alpha, as an inflammatory marker. Administration of flaxseed oil, sesame seed oil or the mixture prevented the MTX-toxicity at varying degrees as shown by reduced oxidative stress and inflammatory response, and improved liver and kidney functions. The mixture was the most efficient treatment associated with the histopathological improvements in the liver and kidney tissue samples, and all biochemical parameters tested. Conclusion: Flaxseed oil, sesame seeds oil and the mixture may be used therapeutically to prevent hepatorenal toxicity induced by MTX. The effect is likely due to the presence of phenolic compounds and polyunsaturated fatty acids in the oils with antioxidant and anti-inflammatory properties.

Download Full-text

Bioactive β-Carbolines Harman and Norharman in Sesame Seed Oils in China

Molecules ◽

10.3390/molecules27020402 ◽

2022 ◽

Vol 27 (2) ◽

pp. 402

Author(s):

Wei Liu ◽

Zhaoyu Yang ◽

Lili Shi ◽

Yun Li

Keyword(s):

Edible Oils ◽

Sesame Seed ◽

Sesame Oil ◽

Biologically Active ◽

Seed Oils ◽

Sesame Seeds ◽

Naturally Occurring ◽

Roasting Process ◽

Different Types ◽

Sesame Seed Oil

The β-carbolines in our diet, mainly including harman and norharman, are a group of biologically active, naturally occurring plant-derived alkaloids. Fragrant sesame seed oil is one of the most popular flavor edible oils in China. Considering that sesame seeds are roasted at 200–240 °C during the processing of flavor sesame seed oils, it is meaningful to investigate the levels of β-carboline compounds in various sesame seed oils. In this work, the levels of β-carbolines (harman and norharman) in different types of sesame seed oils in China (e.g., pressed fragrant sesame oil, ground fragrant sesame oil) have been determined systematically. The results showed that the levels of total β-carbolines in pressed fragrant sesame oils (700.5~2423.2 μg/kg) were higher than that in ground fragrant sesame oils (660.4~1171.7 μg/kg). Roasting sesame seeds at high temperatures (200–240 °C) led to higher levels of β-carbolines (660~2400 μg/kg) in fragrant sesame seed oils. In addition, the loss of tryptophan might be attributed to the formation of β-carbolines in sesame seeds during the roasting process. In general, fragrant sesame seed oils (pressed fragrant sesame oils, ground fragrant sesame oils) contain higher levels of β-carbolines due to the formation of harman and norharman during the roasting sesame seed process.

Download Full-text