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Nanotechnology and Anti-Ageing Skin Care
Published in Dilip Ghosh, Pulok K. Mukherjee, Natural Medicines, 2019
B. Fibrich, I.A. Lambrechts, N. Lall
Bernardi et al. (2011) investigated the moisturising effect of rice bran oil from Oryza sativa (Figure 21.4b) in a nanoemulsion using low energy emulsification methods. The nanoemulsion developed comprised of 10% rice bran oil, 10% surfactants sorbitan oleate/PEG-30 castor oil, 0.05% antioxidant and 0.50% preservatives formulated in distilled water. In vivo studies confirmed that a nanoemulsion of rice bran oil increased the moisturising variance by about 38% compared to a commercial moisturiser that only increased skin hydration with 20% after 14 days of continuous application.
Role of Nutraceuticals in Prevention of Nonalcoholic Fatty Liver
Published in Megh R. Goyal, Durgesh Nandini Chauhan, Plant- and Marine-Based Phytochemicals for Human Health, 2018
Pumpkin seed oil and stabilized rice bran oil afford hepatoprotection against NASH in rat model. The mechanism of action involved antioxi- dant and anti-inflammatory activity along with the reduction of liver fat and improvement of hypercholesterolemia. Both oils improved liver histo- pathological changes but pumpkin seed oil was superior in this respect where it reversed all histopathological abnormalities in liver tissue which became comparable to normal.9 The bioactivity of both oils could be related to the presence of bioactive constituents. It has been reported that rice bran oil contains stigmasterol, campesterol, beta-sitosterol, and trit- erpenoid compounds (alpha and beta-amyrin). Beta-carotene and alpha, gamma, and delta tocopherols and tocotrienols were also identified in rice bran oil. Gamma-oryzanol, policosanol (long-chain primary fatty alcohol), and oleic and linoleic fatty acids are among the important phyto- chemicals and nutrients, which are present in rice bran oil, and possess health benefits.7 Pumpkin seed oil has been reported to contain alpha and delta tocopherols, phytosterols, beta-carotene, phenolic compounds, oleic acid as monounsaturated fatty acid, and linoleic acid which is omega-6 fatty acid.11, 55, 80, 85Nanoemulsion prepared from pumpkin seed oil showed superior effect in preventing the progression of fatty liver compared to the native form of the original oil. The effect of the nanoemulsion was mani- fested in a very low dose with a sustainable action due to the increased absorption and bioavailability.10
Spatial distribution of heavy metals in rice grains, rice husk, and arable soil, their bioaccumulation and associated health risks in Haryana, India
Published in Toxin Reviews, 2021
Renu Daulta, Tallapragada Sridevi, Vinod Kumar Garg
Rice husk is an important by-product of rice processing industries. It is used as fodder, fuel, fertilizer and raw material for rice bran oil extraction. Rice bran oil is widely used in cooking and chemical industries. Hence, heavy metals may indirectly enter in food chain via rice husk also. Various authors have used it as an adsorbent also for pollutant removal from water and wastewater. Therefore, it is important to evaluate heavy metals content in rice husk. Heavy metal concentration in rice husk is given in Table 3. Fe content was in the range of 8.5–301.3 mg/kg, Cu content 2.10−11.20 mg/kg, Cd content <0.01–2.26 mg/kg, Pb content 0.05–11.3 mg/kg, Ni content 0.09–2.9 mg/kg, Zn content 6.2–39.7 mg/kg, Cr content <0.05–1.63 mg/kg and Co content <0.05–0.70 mg/kg. Mean heavy metal concentration in rice husk was in the following order: Fe (106.9 mg/kg) > Zn (14.6 mg/kg) >Cu (4.6 mg/kg) > Pb (3.1 mg/kg) > Ni (1.5 mg/kg) > Cd (0.71 mg/kg) > Cr (0.62 mg/kg) > Co (0.22 mg/kg). In 2015 rice husk samples Fe ranged 6.2–286.2 mg/kg, Cu ranged 3.3–13.2 mg/kg, Cd ranged <0.01–3.45 mg/kg, Pb ranged BDL–8.5 mg/kg, Ni ranged 0.09–3.11 mg/kg, Zn ranged 5.2–36.2 mg/kg, Cr ranged <0.05–3.54 mg/kg and Co ranged <0.05–0.66 mg/kg. Mean heavy metals concentration in rice husk in 2015 samples was in the following order: Fe (98.4 mg/kg) > Zn (12.5 mg/kg) > Cu (3.9 mg/kg) > Pb (2.8 mg/kg) > Ni (1.3 mg/kg) > Cr (0.71 mg/kg) >Cd (0.68 mg/kg) > Co (0.21 mg/kg).
Production of rice bran oil (Oryza sativa L.) microparticles by spray drying taking advantage of the technological properties of cereal co-products
Published in Journal of Microencapsulation, 2022
Nathan H. Noguera, Dyana C. Lima, José Claudio Klier Monteiro Filho, Rodney A. F. Rodrigues
The objective was to encapsulate rice bran oil (unconventional and nutritionally relevant source) with an approach that diversifies the use of co-products from the cereal production chain, specifically rice flour and rice protein as wall materials, to provide improvements in both emulsion stability and particle properties. The determination of peroxides and volatiles from a study of accelerated oxidative stability of oil and its particles is unprecedented in the literature (most likely).