Preparation and antibacterial properties of high-methoxy pectin oligosaccharide -nisin nanoparticles

The Effect of Nanoscale Modification of Nisin by Different Milk-Derived Proteins on Its Physicochemical Properties and Antibacterial Activity

“…As can be seen from Figure 1 A, the particle sizes of the three nanoparticles (L-N, B-N, C-N) were smaller than that of nisin, and all of them showed a single-peak distribution with a narrower peak shape, which suggested that the nanoparticles were more compact in structure and more stable. This difference also meant that the measured particle size distribution came from the nanoparticle complex rather than a single component, further demonstrating that effective complexation of milk protein–nisin nanoparticles occurred [ 41 ]. Among them, L-N had the smallest particle size of about 29.83 nm, which was significantly smaller than the high-methoxy pectin oligosaccharide (HMPOS)-A/nisin nanoparticles (308.0 nm) and HMPOS-B/nisin nanoparticles (319.2 nm) prepared by Wang et al [ 41 ].…”

“…This difference also meant that the measured particle size distribution came from the nanoparticle complex rather than a single component, further demonstrating that effective complexation of milk protein–nisin nanoparticles occurred [ 41 ]. Among them, L-N had the smallest particle size of about 29.83 nm, which was significantly smaller than the high-methoxy pectin oligosaccharide (HMPOS)-A/nisin nanoparticles (308.0 nm) and HMPOS-B/nisin nanoparticles (319.2 nm) prepared by Wang et al [ 41 ].…”

“…Figure 1 B shows that nisin was irregularly shaped and had a rough surface with voids of different sizes [ 41 ]. The SEM image of L-N shows that LF and nisin were in a state of orderly cross-linking, forming a dense mesh structure with a full and rounded surface and fewer voids [ 42 ].…”

“…This difference also meant that the measured particle size distribution came from the nanoparticle complex rather than a single component, further demonstrating that effective complexation of milk protein-nisin nanoparticles occurred [41]. Among them, L-N had the smallest particle size of about 29.83 nm, which was significantly smaller than the high-methoxy pectin oligosaccharide (HMPOS)-A/nisin nanoparticles (308.0 nm) and HMPOS-B/nisin nanoparticles (319.2 nm) prepared by Wang et al [41]. As can be seen from Figure 1A, the particle sizes of the three nanoparticles (L-N, B-N, C-N) were smaller than that of nisin, and all of them showed a single-peak distribution with a narrower peak shape, which suggested that the nanoparticles were more compact in structure and more stable.…”

Multilevel Logic Operation and Artificial Synaptic Plasticity Based on Pectin Transient Memristor

“…The structural composition of pectin contains a large number of oxygen-containing functional groups that will interact with metal ions in the electrode to form a conductive channel. The chemical structure of pectin contains carboxyl groups, its ionization can produce a large number of hydrogen bonds, and the pectin molecules will easily allow water molecules to migrate in, speeding up the dissolution of pectin. , On the other hand, under the action of applied electric field, the solution-treated pectin films have sequential proton hope and satisfactory proton conductivity. Due to the conductivity of protons, pectin “green” synaptic memristors with lower operating voltage can be prepared.…”