Impact of Starch Coating Embedded with Silver Nanoparticles on Strawberry Storage Time

Abstract

The strawberry has a very short postharvest life due to its fast softening and decomposition. The goal of this research is to see how well a starch-silver nanoparticle (St-AgNPs) coating affects the physical, chemical, and microbiological qualities of strawberries during postharvest life. Additionally, the effect of washing with running water on silver concentration in coated strawberry fruit was studied by an inductively coupled plasma-optical emission spectrometer (ICP-OES). Furthermore, the shelf-life period was calculated in relation to the temperature of storage. Fourier transform infrared-attenuated total reflectance (FTIR-ATR), UV-Visible, and Transmission Electron Microscopic (TEM) were used to investigate the structure of starch-silver materials, the size and shape of AgNPs, respectively. The AgNPs were spherical, with an average size range of 12.7 nm. The coated samples had the lowest weight loss, decay, and microbial counts as compared to the uncoated sample. They had higher total acidity and anthocyanin contents as well. The washing process led to the almost complete removal of silver particles by rates ranging from 98.86 to 99.10%. Finally, the coating maintained strawberry qualities and lengthened their shelf-life from 2 to 6 days at room storage and from 8 to 16 days in cold storage.

Green synthesized silver nanoparticles from eucalyptus leaves can enhance shelf life of banana without penetrating in pulp

“…0.02% and 0.03% as compared to 0.04% and 0.05% of AgNPs (Fig 15). Similar trends were obtained by researchers who used 0.01% AgNPs with Polyvinyl pyrolidone (PVP) solution and used these nanoparticle coatings in packaging of Rutab dates to enhance their shelf life for 30 days at 12˚C in Italy [67] and coating of AgNPs to maintain the post-harvest quality in strawberry by increasing its shelf life for 16 days [68]. The researchers explained the role of AgNPs in reduction of respiration or evaporation that increased the shelf life of treated banana samples by maintaining the moisture level in fruits and vegetables [63,67].…”

“…So, the silver nano-coating may reduce the fruit respiration rate and slow down the consumption of acid content during the physiological and metabolic processes of fruit. As a result, the AgNPs may prolong the ripeness of banana after harvesting and increase its shelf life [58,68].…”

Effect of Chitosan Nanoparticles as Edible Coating on the Storability and Quality of Apricot Fruits

“…The greater acidity drop in the uncoated strawberries could be attributed to the use of acids as precursors for metabolism throughout preservation. Nano-coatings could inhibit the respiration of samples and slow down the consumption of acid in the physiological metabolic activities of fruits, thus effectively slowing down the downward trend of titratable acid and extending the shelf-life of the fruits [ 40 , 41 ].…”

Production and Characterization of Healing Polymeric Films for Diabetes Patients’ Wounds

“…In addition, chitosan inhibits the cell's protein synthesis by altering the DNA of microorganisms (Goy et al, 2009). Nano-sized silver particles are widely used in medical applications and implants due to their broadspectrum antimicrobial activity and non-toxicity to bacteria, fungi and viruses (Dakal et al, 2016;Fahmy et al, 2017;Taha et al, 2022;Yin et al, 2020;Bruna et al, 2021). Studies have demonstrated that silver alters and inhibits the effects of cellular enzymes and DNA.…”

“…Studies have demonstrated that silver alters and inhibits the effects of cellular enzymes and DNA. It has been determined that Ag (I) ions bind to and neutralize electron-carrying compounds such as thiols, carboxylates, amides and imidazoles found in the enzyme and DNA structures of microorganisms (Taha et al, 2022). Ascorbic acid (AA) is used as an antioxidant due to its ability to retain oxygen.…”