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1.
Braz. arch. biol. technol ; 63: e20190351, 2020. tab
Article Dans Anglais | LILACS | ID: biblio-1132165

Résumé

Abstract Each year, the consumption of vegetable oils increases gradually. Some oils, such as chia, sesame, and quinoa, are consumed due to the nutritional properties and health promoters that have been recognized in their components. Based on this premise, the present study aimed to characterize chia (Salvia hispanica), sesame (Sesamum inducum), and quinoa (Chenopodium quinoa) oils, in order to enable their applications in the development of new food products. Chia oil presented higher degradation, as it stood out with higher amounts of free fatty acids (4.46%) and peroxide value (18.35 meq/kg). It is an oil that is rich in polyunsaturated fatty acids (75.47%), and, consequently, with high refractive index (1,475) and iodine value (192.86 g/100 g). Quinoa oil stood out for its higher oxidative stability (17.55 h) and higher amount of phenolic compounds (190.84 mg/100 g). Sesame and quinoa oils showed no significant difference for carotenoids, but sesame oil had higher content of total tocopherols (656.50 mg/kg). Thus, the oils can be used in technological processes and/ or in the formulation of new food products, in order to their increase the nutritional value.


Sujets)
Huiles végétales/composition chimique , Huile de sésame/composition chimique , Chenopodium quinoa/composition chimique , Salvia/composition chimique
2.
Article Dans Anglais | IMSEAR | ID: sea-139948

Résumé

Background: Oil pulling has been used extensively as a traditional Indian folk remedy without scientific proof for many years for strengthening teeth, gums and jaws and to prevent decay, oral malodor, bleeding gums and dryness of throat and cracked lips. Aim: The aim of this study was to evaluate the antibacterial activity of sesame oil and lignans isolated from sesame oil on oral microorganisms and to check whether saponification or emulsification occurs during oil-pulling therapy. Materials and Methods: The in vitro study was carried out in three different phases: (1) Antibacterial activity of the lignans and sesame oil were tested by minimum inhibitory concentration assay by agar dilution method and agar well diffusion method, respectively. (2) Increase in free fatty acid level of oil and the quantity of sodium hydroxide (NaOH) used up in the titration are good indicators of saponification process. This was assessed using analytical tests for vegetable oils. (3) Swished oil was observed under light microscope to assess the status of the oil, presence of microorganisms, oral debris and foreign bodies. Results: Sesamin and sesamolin isolated from sesame oil did not have any antibacterial effect against oral microorganisms like Streptococcus mutans, Streptococcus mitis and Streptococcus viridans. Emulsification of sesame oil occurs during oil-pulling therapy. Increased consumption of NaOH in titration is a definite indication of a possible saponification process. Conclusion: The myth that the effect of oil-pulling therapy on oral health was just a placebo effect has been broken and there are clear indications of possible saponification and emulsification process, which enhances its mechanical cleaning action.


Sujets)
Anti-infectieux locaux/composition chimique , Anti-infectieux locaux/usage thérapeutique , Thérapies complémentaires , Humains , Bains de bouche/composition chimique , Bains de bouche/usage thérapeutique , Hygiène buccodentaire/méthodes , Huile de sésame/composition chimique , Huile de sésame/usage thérapeutique
3.
Medical Sciences Journal of Islamic Azad University. 2008; 18 (1): 13-16
Dans Anglais | IMEMR | ID: emr-89034

Résumé

Sesame oil includes unsaturated fatty acids and phosphatidyle choline [lecithin]. Regarding to nutritional properties and lack of cardiovascular side effects of sesame oil, its effect on blood cholesterol level in aged and young rats were studied. In this study, aged and young rats were assigned into four groups of eight as follows. One group received ordinary diet, as control and other groups received additional sesame oil 10% for 2,3 and 4 weeks, respectively. Finally, blood samples were obtained from rat hearts and were studied by enzymatic methods. Total cholesterol level was statistically lower in both young and aged rats receiving sesame oil 10% for 2,3 and 4 weeks, compared with control groups [p<0.05]. This study showed that sesame oil is able to decrease blood cholesterol level


Sujets)
Animaux de laboratoire , Huile de sésame/composition chimique , Huile de sésame , Rats
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