جستجوی مقالات مرتبط با کلیدواژه "روغن کاملینا" در نشریات گروه "صنایع غذایی"

Nowadays, due to the favorable effects of natural antioxidants such as the essential oils of various plants and delaying or preventing the oxidation of food based on oil or fat, instead of synthetic antioxidants, it has received a lot of attention. In this study, the effect of using the essential oils of Ferulago contracta, Rosmarinus officinalis and Lavandula officinalis plants extracted by steam distillation (at three levels of 100, 300 and 500 ppm) on the thermal stability of camellia oil extracted by cold pressing method under accelerated conditions (maintenance of oil at 65°C for 14 days) was investigated in comparison with camellia oil containing synthetic antioxidant TBHQ. Data analysis was done by one-way analysis of variance (ANOVA) in SPSS25 software and comparing means using Duncan's multiple range test. The results showed that the type of essential oil, storage time and also their interaction had a significant effect (p<0.01) on the peroxide, anisidine and TOTOX value, so that with the increase in the storage time of the samples, the peroxide, anisidine and TOTOX value increased significantly (p<0.05) and with increasing the concentration of essential oils, it decreased significantly (p<0.05). After 14 days of storage in accelerated conditions, according to the results related to the total oxidation (TOTOX value), using the essential oil of Ferulago contracta and Rosmarinus officinalis (at the level of 500 ppm), the oxidation resistance of camellia oil compared to camellia oil samples containing the synthetic antioxidant TBHQ, it increased and the shelf life and use of camelina oil for frying became suitable.

Camelina oil contains large amounts of unsaturated fatty acids and phenolic compounds, which affect the amount of blood factors such as blood lipids. The presence of these compounds reduces the deposition of fat in the veins and reduces the mutagenicity and carcinogenicity of factors such as benzopyrene. The aim of this research is to evaluate the safety and effect of camellia oil as an edible oil on the growth, tissue and blood factors of Wistar rats in order to investigate its use in human nutrition. During this period (90 days), 40 male Wistar rats in 4 groups were administered Camelina oil with doses of 0.1, 1 and 10 ml daily compared to the control group, in blood and biochemical parameters such as lipid factors. Blood, ALT, AST, ALP and white and red blood cells were evaluated. In ALT, Cr, LDL, total cholesterol, WBC, PDW and RBC factors, no significant difference was observed between the groups and the control group. But the reduction of urea, TG, AST, RDW, MCHC occurred in different groups compared to the control group, and this reduction was associated with a significant difference. A significant difference was observed in blood glucose level in two groups with 1 and 10 ml diet. Also, the exposure of this oil to the studied doses did not cause any pathological and clinical effects in the studied animals compared to the control group animals in a period of three months. Also, the results of this study showed that due to the high amount of unsaturated fatty acids (linolenic acid and linoleic acid), tocopherol and other antioxidants, camellia oil can be effective in increasing the immunity of the cellular level of the body and human health.

In recent years, Camelina (Camelina Sativa) has gained an extensive attention due to its properties as a new source of edible oil. Camelina seeds contain significant amounts of oil and essential fatty acids with nutritional and industrial importance. In this study, fatty acid composition, physicochemical properties, oxidative stability index, as well as atherogenicity and thrombogenicity of oil from camelina seed grown in Iran were investigated and compared with those of canola and sunflower seed oils extracted by cold pressing method. The dominant fatty acids of camelina, canola and sunflower oils were linolenic (30.429 ± 0.443), oleic (62.494 ± 0.187%) and linoleic (62.062 ± 0.252%) acids, respectively. Camelina oil w:as char:acterized by low values of atherogenicity (0.061 ± 0.001) and thrombogenicity (0.061 ± 0.001) and relatively high hypocholesterolemic to hypercholesterolemic ratio (12.314 ± 0.170). In addition, camelina oil had the lowest ratio of omega-6 to omega-3 (0.729 ±0.028), and the highest calculated oxidizability value (8.47 ±0.079) and monounsaturated to polyunsaturated fatty acids ratio (0.628 ±0.003). These results indicate the appropriate nutritional properties but high oxidative susceptibility of camelina oil compared to sunflower and canola oils. The peroxide and anisidine values of camelina, canola and sunflower oils were found to be 0.8 ±0.028, 0.77 ±0.042, 1.12 ± 0.057, and 0.21 ±0.014, 0.18 ±0.028, 0.28 ±0.000, respectively. Therefore, the stability of camelina oil was higher than expected despite the high level of omega-3 fatty acids, which might be justified by its high levels of tocopherols and other antioxidant compounds.