1 Girma Gonfa, 1,2 Sintayehu Mekuria Hailegiorgis
particles have been utilized as nanocarriers for the delivery
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particles have been utilized as nanocarriers for the delivery of medications [164]. Additionally, the hydrophobicity of the medicines decreases absorption during oral adminis- tration. Tis is enhanced by utilizing silica nanoparticles as carriers for such hydrophobic medications, which have demonstrated encouraging outcomes when administered orally [163]. 5.4. Agricultural Applications. A bioactive component called silica has been linked to fungicidal efects. Diferent in- vestigations revealed that silica could increase the resistance against fungal diseases. It has been proven that the envi- ronmental stress and tolerance can increase; in nut shell, the productivity of crop signifcantly improves [165]. It has been demonstrated to boost the resistance of cucumbers to powdery mildew [166], in cucumbers and grapes [167, 168]. In the recent past, in vitro studies have also been performed to investigate the antifungal efect of silica, and in vitro inhibition of mycelial growth of several phytopathogenic fungi grown on potassium silicate amended media has been reported [165]. 5.5. Applications for Food Preservation. Many fruits can be coated with hybrid flms made of silica to extend their shelf life and keep fresher for longer [169]. It has been demon- strated that some fruits can prolong their shelf life dra- matically. Fruit has a tendency to make you lose weight, better enzymatic activity, more reducing sugars, and a longer shelf life [170]. Te addition of nanofllers such as silicate, clay, and titanium dioxide to biopolymers may enhance their mechanical and barrier qualities as well as provide additional uses as an antibacterial agent, biosensor, and oxygen scav- enger in food packaging [171]. Te bio-nanocomposite can be utilized as an active food packaging that can interact with the food in a number of ways, such as by releasing benefcial components such as antibacterial agents and antioxidant agents or by eliminating unfavorable factors such as oxygen or water vapor. Additionally, the bio-nanocomposite can be employed as smart food packaging that detects the features of the packaged food, such as microbial contamination or expiration date, and uses a mechanism to record and convey information about the product’s quality or safety [170]. 5.6. Industrial Applications. Silica nanoparticles are ideal for a variety of industrial applications due to their mesoporous structure and high surface area. Due to the exceptional qualities these particles exhibit, more and more people are turning to these applications. As an illustration, mesoporous silica-based nanofbers have demonstrated remarkable po- tential for immobilization and are thus an appropriate material for encapsulation [172]. Moreover, by encapsu- lating capsaicin using the same fber matrix, the enzyme’s stimulation activity was increased. Tis demonstrates the viability of employing mesopore silica nanoparticle fbers used for enzymatic encapsulation [173]. 5.7. Environmental Applications. Due to their toxicity, in- ability to degrade, and long-lasting nature, heavy metals such as arsenic, copper, cadmium, chromium, nickel, zinc, lead, and mercury are important contaminants of fresh water reservoirs. Tese heavy metal ions are naturally present in the environment, but due to an increase in 16 Advances in Materials Science and Engineering industrial waste, their concentration is rising right now [174]. Te harmful ions get into the food chain and ulti- mately get into people [175]. For instance, consuming too much zinc may result in health issues such as stomach pains, vomiting, and skin irritations, Ni concentrations above a certain level cause lung and kidney cancer [176]. Natural zeolites, naturally occurring silicate minerals, have been utilized extensively in place of manufactured resins to remove heavy metals from aqueous solutions due to their inexpensive cost and high availability [177]. Moreover, compared to controls, silica nanoparticles exposed to pol- luted plants absorbed more air lead [178]. 5.8. Applications in Water Purifcation. Using silica nano- tải về 1.86 Mb. Chia sẻ với bạn bè của bạn:
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