期刊
APPLIED CLAY SCIENCE
卷 160, 期 -, 页码 88-94出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.clay.2017.11.041
关键词
Halloysite nanotubes; Salicylic acid; Pseudomonas fluorescens; Antibacterial activity isothermal micro; calorimetry (IMC); Turbidimetry; UV spectroscopy
资金
- project FIRB 2012 - Italian Ministry of University and Research [RBFR12ETL5]
In this work halloysite (Hal) nanotubes were used as nanocontainers for salycilic acid (SA) in a perspective of its use in active packaging for food industry. The system Hal/SA was investigated for its ability to stabilize Hal suspensions by turbidimetry, its release kinetics in water by UV spectroscopy and its antibacterial activity against Pseudomonas fluorescens IMA 19/5 by Isothermal Micro Calorimetry (IMC). IMC is a sensitive and non-destructive technique and allows the study of a wide range of relatively slow processes (hours and days) in solutions. The system Hal/SA resulted to stabilize Hal suspension in water and to release SA in a controlled way over 50 h. Moreover the SA released by Hal/SA showed an antibacterial activity at lower concentrations than free SA, likely due to the close contact of bacteria and Hal in the reaction vessel.
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