Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/329566
Type: Artigo
Title: Chemometric Analysis Of Uv Characteristic Profile And Infrared Fingerprint Variations Of Coffea Arabica Green Beans Under Different Space Management Treatments
Author: Terrile
Amelia E.; Marcheafave
Gustavo G.; Oliveira
Guilherme S.; Rakocevic
Miroslava; Bruns
Roy E.; Scarminio
Ieda S.
Abstract: Ultraviolet characteristic profiles and infrared spectroscopic (FTIR) fingerprints of green bean extracts of Coffea arabica L., cv. IAPAR 59, cultivated in two planting patterns, rectangular and square, and at two different densities, 10,000 and 6,000 plants ha(-1), identified as R-10, R-6, S-10, and S-6 were analyzed with principal component and hierarchical cluster analyses. A simplex centroid design for four solvents (ethanol, acetone, dichloromethane, hexane) was used for sample extraction. The largest chlorogenic acid (CGA) contents were found at the lower planting density. The dichloromethane extracts of the S-10 treatment showed the highest levels of unsaponifiable lipids (cafestol and kahweol). The R-6 treatment showed a slightly higher content of cafestol and kahweol. Cluster analysis of FTIR fingerprints confirmed that the CGA and caffeine levels differentiate the spatial arrangements. The FTIR fingerprints suggest that green beans from S-6 and R-10 were richer in lipids and the other two treatments had more sugars and proteins.
Subject: Plant Architecture
Arabica Coffee
Uv-vis Spectroscopy
Ftir Spectroscopy
Chemometric Analysis
Editor: Soc Brasileira Quimica
São Paulo
Rights: aberto
Identifier DOI: 10.5935/0103-5053.20160022
Address: http://www.scielo.br/scielo.php?pid=S0103-50532016000701254&script=sci_arttext
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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