Gold nanoparticles (AuNPs) as preservatives add with variable concentrations to corn oil to may improve the shelf life. AuNPs was prepared by pyrolysis in oleic acid then sample was characterized by transmission electron microscope and UV spectroscopy. Rancidity analyses and microbiological properties were performed through storage periods. The results showed that AuNPs decreases total bacterial count and chemical analyses except iodine value but shelf life increases compared to control sample. Practical applications It is of interest to know that, gold nanoparticles not only have the antibacterial function, but also have good safe guarantee in human edible and touchable fields. It is nontoxic, odorless, and safe having passed the FDA attestation in the United States. The future prospective of these nanomaterials give a wide range of chances for the development of innovative products and applications in the food system.
HE aim of the study is to explore the antidiabetic and antioxidant activities of gold nanoparticles (AuNPs) mixed with either flaxseed oil (FLO) or fish oil (FIO). A pyrolysis method was used to prepare AuNPs in oleic acid. The characteristics of the sample were determined by using the transmission electron microscope (TEM) and UV spectroscopy. Male albino rats were divided into two main groups. Group one (n=10 rats) was fed on the basic diet (serves as healthy control). The other group was fed on the high fructose diet (HFD) for four weeks and then was divided into five subgroups. 1 st subgroup was fed on HFD only, 2 nd and 4 th subgroups were fed on HFD mixed with omega-3 oils while 3 rd and 5 th fed on HFD+ omega-3 oils mixed with AuNPs. Results revealed that there was a significant decrease in glucose level, serum insulin, homeostasis model assessment of insulin resistance (HOMA-IR) index and lipid peroxidation in oils nanoparticles treated groups compared to the HFD group and a significant increase in the homeostasis model assessment of β-cell function (HOMA-β) and Glutathione (GSH). It can be concluded that AuNPs mixed omega-3 oils have more anti-diabetic, hepatic protection and antioxidant properties than omega-3 oils alone.
This study aimed to evaluate the hypolipidemic, and anti-obesity effects of polyunsaturated oils, mixed with gold nanoparticles (AuNPs). AuNPs were prepared by the oleic acid pyrolysis method. The sample was characterized by UV spectroscopy and transmission electron microscope (TEM). Sixty adult male rats were divided into 2 main groups. Group one (n=10 rats) was fed on the healthy diet (serves as basic control). The other group was fed on the high fructose diet (HFD) for four weeks and then was divided into five subgroups. 1st subgroup was fed on HFD only, 2nd and 4th subgroups were treated with n-3 PUFAs oils while 3rd and 5th treated with n-3 PUFAs oils mixed with AuNPs. Treatment of obese rats with n-3 PUFAs mixing with AuNPs revealed a significant decrease in in weight gain accompanied by an improvement of lipid profile. Histological examination of the heart indicated a marked improvement in the architecture and marked decrease of relative weight of heart in treated rats. It may be concluded that mixing of PUFAs oils with AuNPs could have the ability to lower weight gain of obese rats and relieved the various biochemical and histological abnormalities resulted due to obesity metabolic disorders.
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