Coatings Research Articles

Tuning the efficacy of decellularized apple by coating with alginate/gelatin to behave as a bioscaffold for cultured meat production

Substantial efforts are underway to tackle the current challenges of sustainability and environmental impacts linked to orthodox animal agriculture. This had led to advancement in food innovation guiding the fabrication of edible scaffolds based cultured meat. This current research work aims to develop and validate a new approach in fabricating a 3D porous scaffold of decellularized apple coated with a polymer mixture of gelatin/alginate for cultivated meat production. The fabricated noncoated (A) and coated (CA) 3D scaffolds presented different ratios of pore sizes with the medium-sized pores (100–250 µm) being higher in the case of CA. The water absorption capacity of CA (∼64 %) was almost two folds compared to A (∼31 %) with delayed digestion in the presence of gastric simulated juice with or without pepsin. Both the scaffolds showed the capability to adhere and proliferate muscle satellite cells as single cell culture and muscle satellite along with NIH/3T3 fibroblast cells as co-culture. However, the CA scaffolds showed enhanced capability to adhere and proliferate the two cell lines on its surface compared to A. This work demonstrates an efficient way to fabricate decellularized plant scaffolds with high potential to be used in the production of cultured meat for the food industry.

Beeswax coating improves the hydrophobicity of sodium alginate/ anthocyanin/ cellulose nanocrystal indicator film

This study investigates the waterproof layer formed by beeswax (BW) to improve the hydrophobicity of sodium alginate/black soybean seed coat anthocyanin/cellulose nanocrystal indicator films. The concentrations of BW and the fabrication method of the waterproof layer, including spraying, coating (CO), and soaking, were optimized. The results showed that the optimal concentration of BW in the waterproof layer was 5% owing to its high water contact angle of 111.5°. Different methods of fabricating waterproof layers with BW led to the formation of particles of different sizes on the microscopic film surface. Hydrophobic films with a waterproof layer of BW-CO had high transmittance and pH sensitivity, ensuring the basic properties of indicator films. Meanwhile, they exhibited excellent water barrier properties based on the water contact angle, water vapor adsorption, water vapor permeability, water content and water solubility. In particular, these films remained highly hydrophobic after 10 days of storage at 100% humidity, with a water contact angle of 108.3°. The findings indicated that hydrophobic sodium alginate/black soybean seed coat anthocyanin/cellulose nanocrystal indicator films were prepared using BW, which improved their potential application in intelligent food packaging.

The impacts of ultrasound-assisted protein hydrolysate coating on the quality parameters and shelf life of smoked bonito fillets stored at 4±1ºC

Innovative bioactive protein hydrolysates (PH), produced from Rainbow trout (Oncorhynchus mykiss W., 1792) by-products, were used as a coating on smoked fillets of bonito (Sarda sarda) for extension of the quality and shelf life during chilled storage for 60 days. Three fillet groups were prepared as control group without coating (CG), normal hydrolysate coated group (NHCG), and ultrasound-assisted hydrolysate coated group (UHCG). Total volatile basic nitrogen (TVB-N) and TBA values exceeded the acceptable limits on the 39th and 33rd days for CG respectively; 60th day for NHCG and UHCG. However TBA of UHCG was significantly lower than NHCG. Total aerobic mesophilic bacteria (TAMB) and total aerobic psychrophilic bacteria (TAPB) loads reached 6.32±0.06 and 7.30±0.12 log cfu/g for CG on the 39th day. TAMB and TAPB values of NHCG and UHCG have remained within the limits of consumable until the end of the storage. PH coatings prolonged the storage of fillets by delaying chemical, physical, and microbial degradation. Results showed that ultrasound-assisted PH could be used as a coating for smoked bonito at refrigerated conditions, delaying oxidation and microbial degradation.

Plug-and-play bioinspired seed coatings.

Plug-and-play bioinspired seed coatings.

European Coatings Show 2021 is Cancelled

European Coatings Show 2021 is Cancelled

Reply to Astarita et al. Comment on “Celentano et al. Suitability of a Progenitor Cell-Enriching Device for In Vitro Applications. Coatings 2021, 11, 146”

We would like to thank HBW representatives for their comments [...]

Combined Wastewater Treatment from Manganese Phosphate Coating: Coagulation-Ozonation-Fenton Reaction-Sorption

Combined Wastewater Treatment from Manganese Phosphate Coating: Coagulation-Ozonation-Fenton Reaction-Sorption

Axalta rebrands Transportation Coatings Business

Axalta rebrands Transportation Coatings Business

Comment on Celentano et al. Suitability of a Progenitor Cell-Enriching Device for In Vitro Applications. Coatings 2021, 11, 146

The intent of this letter is to comment on an article entitled “Suitability of a Progenitor Cell-Enriching Device for In Vitro Applications” [...]

Emerging Trends Impacting the Global Coatings Market

Emerging Trends Impacting the Global Coatings Market

Na2SO4 + NaCl molten salts corrosion mechanism of thermal barrier coatings used in ships

Na2SO4 + NaCl molten salts corrosion mechanism of thermal barrier coatings used in ships

Powder coatings market: continuous appeal

Powder coatings market: continuous appeal

Problems of Repainting with Heavy-duty Coating and Countermeasures

重防食塗料の塗り替え塗装の課題とその対策塗料として，環境負荷低減，VOC削減，火災安全対策としての水性塗料，素地調整の問題，さび残存面への塗装，下地処理軽減としてのさび面素地調整補助剤を取り上げ，解説を行った。

Microstructure and Tribological Properties of WC-Ni Matrix Cermet Coatings Prepared by Electrospark Deposition on H13 Steel Substrate

Microstructure and Tribological Properties of WC-Ni Matrix Cermet Coatings Prepared by Electrospark Deposition on H13 Steel Substrate

Eastern Coatings Show Rescheduled to November 2021

Eastern Coatings Show Rescheduled to November 2021

The effects of biofilms on tumor progression in a 3D cancer-biofilm microfluidic model

Components within the tumor microenvironment, such as intratumoral bacteria (IB; within tumors), affect tumor progression. However, current experimental models have not explored the effects of extratumoral bacteria (EB; outside tumors) on cancer progression. Here, we developed a microfluidic platform to analyze the influence of bacterial distribution on bladder cancer progression under defined conditions, using uropathogenic Escherichia coli. This was achieved by establishing coating (CT) and colonizing (CL) models to simulate the different invasion and colonization modes of IB and EB in tumor tissues. We demonstrated that both EB and IB induced closer cell-cell contacts within the tumor cluster, but cancer cell viability was reduced only in the presence of IB. Interestingly, cancer stem cell counts increased significantly in the presence of EB. These outcomes were due to the formation of extracellular DNA-based biofilms by EB. Triple therapy of DNase (anti-biofilm agent), ciprofloxacin (antibiotic), and doxorubicin (anti-cancer drug) could effectively eradicate biofilms and tumors simultaneously. Our preclinical proof-of-concept provides insights on how bacteria can influence tumor progression and facilitate future research on anti-biofilm cancer management therapies.

Optimization of parametrs and modes of plasma sprayng and plasma reflow coatings

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Influence of Tool Coating on Frictional Behavior of AZ31B Mg Alloy at Elevated Temperature

Influence of Tool Coating on Frictional Behavior of AZ31B Mg Alloy at Elevated Temperature

Evaluation of protective coatings for geopolymer mortar under aggressive environment

The aim of this study is to investigate the durability of fly ash based geopolymer mortar with and without protective coatings in aggressive chemical environments. The source materials for geopolymer are Fly ash and Ground Granulated Blast furnace Slag (GGBS) and they are considered in the combination of 80% & 20% respectively. Two Molarities of NaOH solution were considered such as 8M and 10M. The ratio of binder to sand and Sodium silicate to Sodium hydroxide solution (Na2SiO3/NaOH) are taken as 1:2 and 2 respectively. The alkaline liquid to binder ratio is 0.4. Compressive strength tests were conducted at various ages of the mortar specimens. In order to evaluate the performance of coatings on geopolymer mortar under aggressive chemical environment, the mortar specimens were coated with two different types of coatings such as epoxy and Acrylic. They were then subjected to different chemical environments by immersing them in 10% standard solutions of each ammonium nitrate, sodium chloride and sulphuric acid. Drop in compressive strength as a result of chemical exposure was considered as a measure of chemical attack and the drop in compressive strength was measured after 30 and 60 days of chemical exposure. The compressive strength results following chemical exposure indicated that the specimens containing the acrylic coating proved to be more resistant to chemical attacks. The control specimen without coating showed a much greater degree of deterioration. Therefore, the application of acrylic coating was invariably much more effective in improving the compressive strength as well as the resistance of mortar against chemical attacks. The results also indicated that among all the aggressive attacks, the sulphate environment has the most adverse effect in terms of lowering the strength.

A Study of Fluid Structure Interaction Analysis and Coating Characteristics of a Two-stage Pressure Reduction Hydrogen Regulator

A Study of Fluid Structure Interaction Analysis and Coating Characteristics of a Two-stage Pressure Reduction Hydrogen Regulator