title: Characterization of unsaturated fatty acid sustained-release microspheres for long-term algal inhibition.
abstract: The unsaturated fatty acid (linoleic acid) sustained-release microspheres were prepared with linoleic acid (LA) using alginate-chitosan microcapsule technology. These LA sustained-release microspheres had a high encapsulation efficiency (up to 62%) tested by high performance liquid chromatography with a photo diode array. The dry microspheres were characterized by a scanning electron microscope, X-ray diffraction measurement, dynamic thermogravimetric analysis and Fourier transform infrared spectral analysis. The results of characterization showed that the microspheres had good thermal stability (decomposition temperature of 236°C), stable and temperature independent release properties (release time of more than 40 d). Compared to direct dosing of LA, LA sustained-released microspheres could inhibit Microcystis aeruginosa growth to the non-growth state. The results of this study suggested that the LA sustained-release microspheres may be a potential candidate for algal inhibition.
authors.affiliation: Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, MOE, School of Environment, Hohai University, 210098 Nanjing, China. Electronic address: nilixiao@gmail.com.
authors.forename: Lixiao
authors.initials: L
authors.lastname: Ni
authors.affiliation: Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, MOE, School of Environment, Hohai University, 210098 Nanjing, China.
authors.forename: Xiaoting
authors.initials: X
authors.lastname: Jie
authors.affiliation: Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, MOE, School of Environment, Hohai University, 210098 Nanjing, China.
authors.forename: Peifang
authors.initials: P
authors.lastname: Wang
authors.affiliation: Department of Environmental Science and Engineering, School of Geography Science, Nanjing Normal University, 210097 Nanjing, China.
authors.forename: Shiyin
authors.initials: S
authors.lastname: Li
authors.affiliation: Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, MOE, School of Environment, Hohai University, 210098 Nanjing, China.
authors.forename: Shuzhen
authors.initials: S
authors.lastname: Hu
authors.affiliation: Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, MOE, School of Environment, Hohai University, 210098 Nanjing, China.
authors.forename: Yiping
authors.initials: Y
authors.lastname: Li
authors.affiliation: Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, MOE, School of Environment, Hohai University, 210098 Nanjing, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Li
authors.affiliation: Desert Research Institute, Las Vegas, NV 89119, USA.
authors.forename: Kumud
authors.initials: K
authors.lastname: Acharya
mesh_terms: D000464:Alginates; D003692:Delayed-Action Preparations; D005231:Fatty Acids, Unsaturated; D020723:Glucuronic Acid; D006603:Hexuronic Acids; D019787:Linoleic Acid; D046931:Microcystis / Q000378:metabolism*; D008863:Microspheres
chemical_list: D000464:Alginates; D003692:Delayed-Action Preparations; D005231:Fatty Acids, Unsaturated; D006603:Hexuronic Acids; D020723:Glucuronic Acid; D019787:Linoleic Acid
keywords: Algal inhibition efficiency; Characterization; Linoleic acid; Release property; Sustained-release microsphere