Modeling ready biodegradability of fragrance materials. (17th April 2015)

• Record Type: Journal Article
• Authors: Ceriani, Lidia; Papa, Ester; Kovarich, Simona; Boethling, Robert; Gramatica, Paola
• Is Part Of: Environmental toxicology and chemistry. Volume 34:Number 6(2015:Jun.)
• Page Start: 1224
• Page End: 1231
• Publication Date: 2015-04-17
• Subjects: Pollution -- Environmental aspects -- Periodicals; Environmental chemistry -- Periodicals; 615.902
• DOI: 10.1002/etc.2926
• Languages: English
• ISSNs: 0730-7268

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <sec id="etc2926-sec-0001" sec-type="section"> <p>In the present study, quantitative structure activity relationships were developed for predicting ready biodegradability of approximately 200 heterogeneous fragrance materials. Two classification methods, classification and regression tree (CART) and <italic>k</italic>‐nearest neighbors (<italic>k</italic>NN), were applied to perform the modeling. The models were validated with multiple external prediction sets, and the structural applicability domain was verified by the leverage approach. The best models had good sensitivity (internal ≥80%; external ≥68%), specificity (internal ≥80%; external 73%), and overall accuracy (≥75%). Results from the comparison with BIOWIN global models, based on group contribution method, show that specific models developed in the present study perform better in prediction than BIOWIN6, in particular for the correct classification of not readily biodegradable fragrance materials. <italic>Environ Toxicol Chem</italic> 2015;34:1224–1231. © 2015 SETAC</p> </sec> </abstract>