PMID- 26550151 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20151109 LR - 20200930 IS - 1940-5901 (Print) IS - 1940-5901 (Electronic) IS - 1940-5901 (Linking) VI - 8 IP - 8 DP - 2015 TI - Study on encapsulation of chlorine dioxide in gelatin microsphere for reducing release rate. PG - 12404-10 AB - OBJECTIVE: This study aims to explore the effects of encapsulation of chlorine dioxide in a hydrophilic biodegradable polymer gelatin to reduce its release rate. METHODS: An emulsification-coacervation method was adopted. The characterizations of chlorine dioxide-gelatin microspheres were described. Using UV-vis spectrophotometer the lambdamax of chlorine dioxide was observed at 358 nm. The particle size and distribution of chlorine oxide-gelatin microspheres was measured by a dynamic light scattering (DLS) method, the diameter was (1400~1900) nm. The entrapment of chlorine dioxide-gelatin microspheres was confirmed by IR. The surface morphology, size, and shape of chlorine dioxide-gelatin microspheres were analyzed using Scanning electron microscope (SEM). RESULTS: It showed that the encapsulated microspheres size was around 2000 nm with uniform distribution. The percentage entrapment of chlorine dioxide in the encapsulated samples was about 80~85%. A slow release study of chlorine dioxide from the encapsulated biopolymer (gelatin) in air was also carried out, which showed continuous release up to ten days. CONCLUSIONS: It can be concluded that it is possible to make a slow release formulation of ClO2 by entrapped in a hydrophilic biodegradable polymer gelatin. ClO2-gelatin microspheres can stable release low concentration ClO2 gas over an extended period. FAU - Ci, Ying AU - Ci Y AD - Chinese Academy of Inspection and Quarantine Beijing 100176, China. FAU - Wang, Lin AU - Wang L AD - Chinese Academy of Inspection and Quarantine Beijing 100176, China. FAU - Guo, Yanchuan AU - Guo Y AD - Technical Institute of Physics and Chemistry, CAS Beijing 100190, China. FAU - Sun, Ruixue AU - Sun R AD - Nan Yang Normal University Nanyang 473061, Henan, China. FAU - Wang, Xijie AU - Wang X AD - Technical Institute of Physics and Chemistry, CAS Beijing 100190, China. FAU - Li, Jinyou AU - Li J AD - Chinese Academy of Inspection and Quarantine Beijing 100176, China. LA - eng PT - Journal Article DEP - 20150815 PL - United States TA - Int J Clin Exp Med JT - International journal of clinical and experimental medicine JID - 101471010 PMC - PMC4612836 OTO - NOTNLM OT - Chlorine dioxide OT - encapsulation OT - gelatin OT - microsphere OT - release rate EDAT- 2015/11/10 06:00 MHDA- 2015/11/10 06:01 PMCR- 2015/08/15 CRDT- 2015/11/10 06:00 PHST- 2015/03/18 00:00 [received] PHST- 2015/07/01 00:00 [accepted] PHST- 2015/11/10 06:00 [entrez] PHST- 2015/11/10 06:00 [pubmed] PHST- 2015/11/10 06:01 [medline] PHST- 2015/08/15 00:00 [pmc-release] PST - epublish SO - Int J Clin Exp Med. 2015 Aug 15;8(8):12404-10. eCollection 2015.