Effect of novel water-soluble polymeric forms of sorbic acid againstFusarium oxysporumf.sp.radicis-cucumerinum
作者:
M. N. Tzatzarakis,
A. M. Tsatsakis,
M. M. Lotter,
M. I. Shtilman,
D. J. Vakalounakis,
期刊:
Food Additives & Contaminants
(Taylor Available online 2000)
卷期:
Volume 17,
issue 12
页码: 965-971
ISSN:0265-203X
年代: 2000
DOI:10.1080/02652030010002289
出版商: Taylor & Francis Group
关键词: Sorbic Acid Polyvinylpyrrolidone Controlled Release Formulations Fusarium Oxysporum
数据来源: Taylor
摘要:
New controlled release water-soluble formulations of sorbic (2,4-hexadienoic) acid were prepared and their inhibitory activity on mycelium growth of Fusarium oxysporum f.sp.radicis-cucumerinumwas evaluated. The new products are epoxidized polymers of polyvinylpyrrolidone (PVP) containing covalently bonded sorbic acid (polymeric esters of sorbic acid) and complexes of PVP with hydrogen bonded sorbic acid, characterized by controlled release of sorbic acid. It was shown that the polymeric complexes of sorbic acid with PVP were more effective fungicidal agents than sorbic acid polymeric esters. In all cases the activity of polymeric derivatives (esters and complexes) was increased by lowering the molecular weight of the polymeric carriers. Controlled release formulations of these polymeric derivatives are new promising products due to their low toxicity, wide range of efficient concentrations for application and ability to regulate lyophilicity. Our data contribute to the understanding of the action mechanism of various polymeric sorbic acid formulations and can result in products which are particularly suitable for food and feed protection applications.
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